Release v6.0.18

Extract reusable checkSchemeAndPort method
Closes gh-32440
2026-06-08 17:33:33 +00:00 · 2024-03-14 09:18:22 +00:00 · 2024-03-14 08:48:42 +00:00 · 2024-03-13 18:18:52 +01:00 · 2024-03-13 17:32:48 +01:00 · 2024-03-12 20:26:44 +01:00
1051 changed files with 19031 additions and 11742 deletions
@@ -21,8 +21,7 @@ derby.log
 /build
 buildSrc/build
 /spring-*/build
-/framework-bom/build
-/framework-docs/build
+/framework-*/build
 /integration-tests/build
 /src/asciidoc/build
 spring-test/test-output/
@@ -1,36 +0,0 @@
-Juergen Hoeller <jhoeller@vmware.com>
-Juergen Hoeller <jhoeller@vmware.com> <jhoeller@pivotal.io>
-Juergen Hoeller <jhoeller@vmware.com> <jhoeller@gopivotal.com>
-Rossen Stoyanchev <rstoyanchev@vmware.com>
-Rossen Stoyanchev <rstoyanchev@vmware.com> <rstoyanchev@pivotal.io>
-Rossen Stoyanchev <rstoyanchev@vmware.com> <rstoyanchev@gopivotal.com>
-Phillip Webb <pwebb@vmware.com>
-Phillip Webb <pwebb@vmware.com> <pwebb@pivotal.io>
-Phillip Webb <pwebb@vmware.com> <pwebb@gopivotal.com>
-Chris Beams <cbeams@vmware.com>
-Chris Beams <cbeams@vmware.com> <cbeams@pivotal.io>
-Chris Beams <cbeams@vmware.com> <cbeams@gopivotal.com>
-Arjen Poutsma <poutsmaa@vmware.com>
-Arjen Poutsma <poutsmaa@vmware.com> <apoutsma@pivotal.io>
-Arjen Poutsma <poutsmaa@vmware.com> <apoutsma@gopivotal.com>
-Arjen Poutsma <poutsmaa@vmware.com> <poutsma@mac.com>
-Arjen Poutsma <poutsmaa@vmware.com> <apoutsma@vmware.com>
-Oliver Drotbohm <odrotbohm@vmware.com>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@vmware.com>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@pivotal.io>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@gopivotal.com>
-Dave Syer <dsyer@vmware.com>
-Dave Syer <dsyer@vmware.com> <dsyer@pivotal.io>
-Dave Syer <dsyer@vmware.com> <dsyer@gopivotal.com>
-Dave Syer <dsyer@vmware.com> <david_syer@hotmail.com>
-Andy Clement <aclement@vmware.com>
-Andy Clement <aclement@vmware.com> <aclement@pivotal.io>
-Andy Clement <aclement@vmware.com> <aclement@gopivotal.com>
-Andy Clement <aclement@vmware.com> <andrew.clement@gmail.com>
-Sam Brannen <sbrannen@vmware.com>
-Sam Brannen <sbrannen@vmware.com> <sbrannen@pivotal.io>
-Sam Brannen <sbrannen@vmware.com> <sam@sambrannen.com>
-Simon Basle <sbasle@vmware.com>
-Simon Baslé <sbasle@vmware.com>
-<dmitry.katsubo@gmail.com> <dmitry.katsubo@gmai.com>
-Nick Williams <nicholas@nicholaswilliams.net>
@@ -1,3 +1,3 @@
 # Enable auto-env through the sdkman_auto_env config
 # Add key=value pairs of SDKs to use below
-java=17.0.7-librca
+java=17.0.8.1-librca
@@ -5,10 +5,10 @@ plugins {
 	id 'org.jetbrains.kotlin.plugin.serialization' version "${kotlinVersion}" apply false
 	id 'org.jetbrains.dokka' version '1.8.10'
 	id 'org.unbroken-dome.xjc' version '2.0.0' apply false
-	id 'com.github.ben-manes.versions' version '0.46.0'
+	id 'com.github.ben-manes.versions' version '0.49.0'
 	id 'com.github.johnrengelman.shadow' version '8.1.1' apply false
 	id 'de.undercouch.download' version '5.4.0'
-	id 'me.champeau.jmh' version '0.7.0' apply false
+	id 'me.champeau.jmh' version '0.7.1' apply false
 }

 ext {
@@ -75,7 +75,7 @@ configure([rootProject] + javaProjects) { project ->
 	}

 	checkstyle {
-		toolVersion = "10.12.0"
+		toolVersion = "10.12.7"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}

@@ -106,7 +106,7 @@ configure([rootProject] + javaProjects) { project ->
 		// JSR-305 only used for non-required meta-annotations
 		compileOnly("com.google.code.findbugs:jsr305")
 		testCompileOnly("com.google.code.findbugs:jsr305")
-		checkstyle("io.spring.javaformat:spring-javaformat-checkstyle:0.0.38")
+		checkstyle("io.spring.javaformat:spring-javaformat-checkstyle:0.0.41")
 	}

 	ext.javadocLinks = [
@@ -116,7 +116,7 @@ configure([rootProject] + javaProjects) { project ->
 			"https://www.ibm.com/docs/api/v1/content/SSEQTP_8.5.5/com.ibm.websphere.javadoc.doc/web/apidocs/", // com.ibm.*
 			"https://docs.jboss.org/jbossas/javadoc/4.0.5/connector/", // org.jboss.resource.*
 			"https://docs.jboss.org/hibernate/orm/5.6/javadocs/",
-			"https://www.eclipse.org/aspectj/doc/released/aspectj5rt-api/",
+			"https://eclipse.dev/aspectj/doc/released/aspectj5rt-api",
 			"https://www.quartz-scheduler.org/api/2.3.0/",
 			"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-core/2.14.1/",
 			"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-databind/2.14.1/",
@@ -146,7 +146,6 @@ configure(rootProject) {
 	description = "Spring Framework"

 	apply plugin: "io.spring.nohttp"
-	apply plugin: 'org.springframework.build.api-diff'

 	nohttp {
 		source.exclude "**/test-output/**"
@@ -22,21 +22,6 @@ but doesn't affect the classpath of dependent projects.
 This plugin does not provide a `provided` configuration, as the native `compileOnly` and `testCompileOnly`
 configurations are preferred.

-### API Diff
-
-This plugin uses the [Gradle JApiCmp](https://github.com/melix/japicmp-gradle-plugin) plugin
-to generate API Diff reports for each Spring Framework module. This plugin is applied once on the root
-project and creates tasks in each framework module. Unlike previous versions of this part of the build,
-there is no need for checking out a specific tag. The plugin will fetch the JARs we want to compare the
-current working version with. You can generate the reports for all modules or a single module:
-
-```
-./gradlew apiDiff -PbaselineVersion=5.1.0.RELEASE
-./gradlew :spring-core:apiDiff -PbaselineVersion=5.1.0.RELEASE
-```      
-
-The reports are located under `build/reports/api-diff/$OLDVERSION_to_$NEWVERSION/`.
-                                                                                       

 ### RuntimeHints Java Agent

@@ -19,16 +19,11 @@ ext {
 dependencies {
 	implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")
 	implementation("org.jetbrains.kotlin:kotlin-compiler-embeddable:${kotlinVersion}")
-	implementation "me.champeau.gradle:japicmp-gradle-plugin:0.3.0"
-	implementation "org.gradle:test-retry-gradle-plugin:1.4.1"
+	implementation "org.gradle:test-retry-gradle-plugin:1.5.6"
 }

 gradlePlugin {
 	plugins {
-		apiDiffPlugin {
-			id = "org.springframework.build.api-diff"
-			implementationClass = "org.springframework.build.api.ApiDiffPlugin"
-		}
 		conventionsPlugin {
 			id = "org.springframework.build.conventions"
 			implementationClass = "org.springframework.build.ConventionsPlugin"
@@ -1,140 +0,0 @@
-/*
- * Copyright 2002-2019 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.build.api;
-
-import java.io.File;
-import java.net.URI;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.Collections;
-import java.util.List;
-
-import me.champeau.gradle.japicmp.JapicmpPlugin;
-import me.champeau.gradle.japicmp.JapicmpTask;
-import org.gradle.api.GradleException;
-import org.gradle.api.Plugin;
-import org.gradle.api.Project;
-import org.gradle.api.artifacts.Configuration;
-import org.gradle.api.artifacts.Dependency;
-import org.gradle.api.plugins.JavaBasePlugin;
-import org.gradle.api.plugins.JavaPlugin;
-import org.gradle.api.publish.maven.plugins.MavenPublishPlugin;
-import org.gradle.api.tasks.TaskProvider;
-import org.gradle.jvm.tasks.Jar;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * {@link Plugin} that applies the {@code "japicmp-gradle-plugin"}
- * and create tasks for all subprojects named {@code "spring-*"}, diffing the public API one by one
- * and creating the reports in {@code "build/reports/api-diff/$OLDVERSION_to_$NEWVERSION/"}.
- * <p>{@code "./gradlew apiDiff -PbaselineVersion=5.1.0.RELEASE"} will output the
- * reports for the API diff between the baseline version and the current one for all modules.
- * You can limit the report to a single module with
- * {@code "./gradlew :spring-core:apiDiff -PbaselineVersion=5.1.0.RELEASE"}.
- *
- * @author Brian Clozel
- */
-public class ApiDiffPlugin implements Plugin<Project> {
-
-	private static final Logger logger = LoggerFactory.getLogger(ApiDiffPlugin.class);
-
-	public static final String TASK_NAME = "apiDiff";
-
-	private static final String BASELINE_VERSION_PROPERTY = "baselineVersion";
-
-	private static final List<String> PACKAGE_INCLUDES = Collections.singletonList("org.springframework.*");
-
-	private static final URI SPRING_MILESTONE_REPOSITORY = URI.create("https://repo.spring.io/milestone");
-
-	@Override
-	public void apply(Project project) {
-		if (project.hasProperty(BASELINE_VERSION_PROPERTY) && project.equals(project.getRootProject())) {
-			project.getPluginManager().apply(JapicmpPlugin.class);
-			project.getPlugins().withType(JapicmpPlugin.class,
-					plugin -> applyApiDiffConventions(project));
-		}
-	}
-
-	private void applyApiDiffConventions(Project project) {
-		String baselineVersion = project.property(BASELINE_VERSION_PROPERTY).toString();
-		project.subprojects(subProject -> {
-			if (subProject.getName().startsWith("spring-")) {
-				createApiDiffTask(baselineVersion, subProject);
-			}
-		});
-	}
-
-	private void createApiDiffTask(String baselineVersion, Project project) {
-		if (isProjectEligible(project)) {
-			// Add Spring Milestone repository for generating diffs against previous milestones
-			project.getRootProject()
-					.getRepositories()
-					.maven(mavenArtifactRepository -> mavenArtifactRepository.setUrl(SPRING_MILESTONE_REPOSITORY));
-			JapicmpTask apiDiff = project.getTasks().create(TASK_NAME, JapicmpTask.class);
-			apiDiff.setDescription("Generates an API diff report with japicmp");
-			apiDiff.setGroup(JavaBasePlugin.DOCUMENTATION_GROUP);
-
-			apiDiff.setOldClasspath(createBaselineConfiguration(baselineVersion, project));
-			TaskProvider<Jar> jar = project.getTasks().withType(Jar.class).named("jar");
-			apiDiff.setNewArchives(project.getLayout().files(jar.get().getArchiveFile().get().getAsFile()));
-			apiDiff.setNewClasspath(getRuntimeClassPath(project));
-			apiDiff.setPackageIncludes(PACKAGE_INCLUDES);
-			apiDiff.setOnlyModified(true);
-			apiDiff.setIgnoreMissingClasses(true);
-			// Ignore Kotlin metadata annotations since they contain
-			// illegal HTML characters and fail the report generation
-			apiDiff.setAnnotationExcludes(Collections.singletonList("@kotlin.Metadata"));
-
-			apiDiff.setHtmlOutputFile(getOutputFile(baselineVersion, project));
-
-			apiDiff.dependsOn(project.getTasks().getByName("jar"));
-		}
-	}
-
-	private boolean isProjectEligible(Project project) {
-		return project.getPlugins().hasPlugin(JavaPlugin.class)
-				&& project.getPlugins().hasPlugin(MavenPublishPlugin.class);
-	}
-
-	private Configuration createBaselineConfiguration(String baselineVersion, Project project) {
-		String baseline = String.join(":",
-				project.getGroup().toString(), project.getName(), baselineVersion);
-		Dependency baselineDependency = project.getDependencies().create(baseline + "@jar");
-		Configuration baselineConfiguration = project.getRootProject().getConfigurations().detachedConfiguration(baselineDependency);
-		try {
-			// eagerly resolve the baseline configuration to check whether this is a new Spring module
-			baselineConfiguration.resolve();
-			return baselineConfiguration;
-		}
-		catch (GradleException exception) {
-			logger.warn("Could not resolve {} - assuming this is a new Spring module.", baseline);
-		}
-		return project.getRootProject().getConfigurations().detachedConfiguration();
-	}
-
-	private Configuration getRuntimeClassPath(Project project) {
-		return project.getConfigurations().getByName(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME);
-	}
-
-	private File getOutputFile(String baseLineVersion, Project project) {
-		Path outDir = Paths.get(project.getRootProject().getBuildDir().getAbsolutePath(),
-				"reports", "api-diff",
-				baseLineVersion + "_to_" + project.getRootProject().getVersion());
-		return project.file(outDir.resolve(project.getName() + ".html").toString());
-	}
-
-}
@@ -1,4 +1,4 @@
-FROM ubuntu:jammy-20230425
+FROM ubuntu:jammy-20240111

 ADD setup.sh /setup.sh
 ADD get-jdk-url.sh /get-jdk-url.sh
@@ -6,6 +6,5 @@ RUN ./setup.sh

 ENV JAVA_HOME /opt/openjdk/java17
 ENV JDK17 /opt/openjdk/java17
-ENV JDK20 /opt/openjdk/java20

 ENV PATH $JAVA_HOME/bin:$PATH
@@ -3,10 +3,7 @@ set -e

 case "$1" in
 	java17)
-		echo "https://github.com/bell-sw/Liberica/releases/download/17.0.7+7/bellsoft-jdk17.0.7+7-linux-amd64.tar.gz"
-	;;
-	java20)
-		echo "https://github.com/bell-sw/Liberica/releases/download/20.0.1+10/bellsoft-jdk20.0.1+10-linux-amd64.tar.gz"
+		echo "https://github.com/bell-sw/Liberica/releases/download/17.0.10%2B13/bellsoft-jdk17.0.10+13-linux-amd64.tar.gz"
 	;;
 	*)
 		echo $"Unknown java version"
@@ -20,7 +20,7 @@ curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.4/c

 mkdir -p /opt/openjdk
 pushd /opt/openjdk > /dev/null
-for jdk in java17 java20
+for jdk in java17
 do
  JDK_URL=$( /get-jdk-url.sh $jdk )
  mkdir $jdk
@@ -90,13 +90,6 @@ resources:
    <<: *docker-resource-source
    repository: ((docker-hub-organization))/spring-framework-ci
    tag: ((milestone))
- name: every-morning
-  type: time
-  icon: alarm
-  source:
-    start: 8:00 AM
-    stop: 9:00 AM
-    location: Europe/Vienna
 - name: artifactory-repo
  type: artifactory-resource
  icon: package-variant
@@ -113,14 +106,6 @@ resources:
    access_token: ((github-ci-status-token))
    branch: ((branch))
    context: build
- name: repo-status-jdk20-build
-  type: github-status-resource
-  icon: eye-check-outline
-  source:
-    repository: ((github-repo-name))
-    access_token: ((github-ci-status-token))
-    branch: ((branch))
-    context: jdk20-build
 - name: slack-alert
  type: slack-notification
  icon: slack
@@ -217,34 +202,6 @@ jobs:
          "zip.type": "schema"
    get_params:
      threads: 8
- name: jdk20-build
-  serial: true
-  public: true
-  plan:
-    - get: ci-image
-    - get: git-repo
-    - get: every-morning
-      trigger: true
-    - put: repo-status-jdk20-build
-      params: { state: "pending", commit: "git-repo" }
-    - do:
-        - task: check-project
-          image: ci-image
-          file: git-repo/ci/tasks/check-project.yml
-          privileged: true
-          timeout: ((task-timeout))
-          params:
-            TEST_TOOLCHAIN: 20
-            <<: *build-project-task-params
-      on_failure:
-        do:
-          - put: repo-status-jdk20-build
-            params: { state: "failure", commit: "git-repo" }
-          - put: slack-alert
-            params:
-              <<: *slack-fail-params
-    - put: repo-status-jdk20-build
-      params: { state: "success", commit: "git-repo" }
 - name: stage-milestone
  serial: true
  plan:
@@ -396,7 +353,7 @@ jobs:

 groups:
 - name: "builds"
-  jobs: ["build", "jdk20-build"]
+  jobs: ["build"]
 - name: "releases"
  jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release"]
 - name: "ci-images"
@@ -4,6 +4,6 @@ set -e
 source $(dirname $0)/common.sh

 pushd git-repo > /dev/null
-./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Porg.gradle.java.installations.fromEnv=JDK17,JDK20 \
+./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Porg.gradle.java.installations.fromEnv=JDK17 \
  -PmainToolchain=${MAIN_TOOLCHAIN} -PtestToolchain=${TEST_TOOLCHAIN} --no-daemon --max-workers=4 check antora
 popd > /dev/null
@@ -4,7 +4,7 @@ image_resource:
  type: registry-image
  source:
    repository: springio/concourse-release-scripts
-    tag: '0.3.4'
+    tag: '0.4.0-SNAPSHOT'
    username: ((docker-hub-username))
    password: ((docker-hub-password))
 inputs:
@@ -39,8 +39,8 @@
 ** xref:core/resources.adoc[]
 ** xref:core/validation.adoc[]
 *** xref:core/validation/validator.adoc[]
-*** xref:core/validation/conversion.adoc[]
 *** xref:core/validation/beans-beans.adoc[]
+*** xref:core/validation/conversion.adoc[]
 *** xref:core/validation/convert.adoc[]
 *** xref:core/validation/format.adoc[]
 *** xref:core/validation/format-configuring-formatting-globaldatetimeformat.adoc[]
@@ -431,4 +431,4 @@
 ** xref:languages/groovy.adoc[]
 ** xref:languages/dynamic.adoc[]
 * xref:appendix.adoc[]
-* https://github.com/spring-projects/spring-framework/wiki[Wiki]
+* https://github.com/spring-projects/spring-framework/wiki[Wiki]
@@ -168,7 +168,7 @@ Kotlin::
 ======

 NOTE: Pooling stateless service objects is not usually necessary. We do not believe it should
-be the default choice, as most stateless objects are naturally thread safe, and instance
+be the default choice, as most stateless objects are naturally thread-safe, and instance
 pooling is problematic if resources are cached.

 Simpler pooling is available by using auto-proxying. You can set the `TargetSource` implementations
@@ -176,7 +176,7 @@ Kotlin::
 		@AfterReturning(
 			pointcut = "execution(* com.xyz.dao.*.*(..))",
 			returning = "retVal")
-		fun doAccessCheck(retVal: Any) {
+		fun doAccessCheck(retVal: Any?) {
 			// ...
 		}
 	}
@@ -448,7 +448,7 @@ Kotlin::
 	class AroundExample {

 		@Around("execution(* com.xyz..service.*.*(..))")
-		fun doBasicProfiling(pjp: ProceedingJoinPoint): Any {
+		fun doBasicProfiling(pjp: ProceedingJoinPoint): Any? {
 			// start stopwatch
 			val retVal = pjp.proceed()
 			// stop stopwatch
@@ -893,7 +893,7 @@ Kotlin::
 			"com.xyz.CommonPointcuts.inDataAccessLayer() && " +
 			"args(accountHolderNamePattern)") // <1>
 	fun preProcessQueryPattern(pjp: ProceedingJoinPoint,
-							accountHolderNamePattern: String): Any {
+							accountHolderNamePattern: String): Any? {
 		val newPattern = preProcess(accountHolderNamePattern)
 		return pjp.proceed(arrayOf<Any>(newPattern))
 	}
@@ -85,7 +85,7 @@ Kotlin::
 		}

 		@Around("com.xyz.CommonPointcuts.businessService()") // <1>
-		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 			var numAttempts = 0
 			var lockFailureException: PessimisticLockingFailureException
 			do {
@@ -173,7 +173,7 @@ Kotlin::
 ----
 	@Around("execution(* com.xyz..service.*.*(..)) && " +
 			"@annotation(com.xyz.service.Idempotent)")
-	fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+	fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 		// ...
 	}
 ----
@@ -6,8 +6,8 @@ it until later.

 By default, there is a single instance of each aspect within the application
 context. AspectJ calls this the singleton instantiation model. It is possible to define
-aspects with alternate lifecycles. Spring supports AspectJ's `perthis` and `pertarget`
-instantiation models; `percflow`, `percflowbelow`, and `pertypewithin` are not currently
+aspects with alternate lifecycles. Spring supports AspectJ's `perthis`, `pertarget`, and
+`pertypewithin` instantiation models; `percflow` and `percflowbelow` are not currently
 supported.

 You can declare a `perthis` aspect by specifying a `perthis` clause in the `@Aspect`
@@ -154,7 +154,6 @@ Java::
 ----
 	package com.xyz;

-	@Aspect
 	public class Pointcuts {

 		@Pointcut("execution(public * *(..))")
@@ -179,7 +178,6 @@ Kotlin::
 ----
 	package com.xyz

-	@Aspect
 	class Pointcuts {

 		@Pointcut("execution(public * *(..))")
@@ -211,9 +209,9 @@ pointcut matching.

 When working with enterprise applications, developers often have the need to refer to
 modules of the application and particular sets of operations from within several aspects.
-We recommend defining a dedicated aspect that captures commonly used _named pointcut_
-expressions for this purpose. Such an aspect typically resembles the following
-`CommonPointcuts` example (though what you name the aspect is up to you):
+We recommend defining a dedicated class that captures commonly used _named pointcut_
+expressions for this purpose. Such a class typically resembles the following
+`CommonPointcuts` example (though what you name the class is up to you):

 [tabs]
 ======
@@ -223,10 +221,8 @@ Java::
 ----
 	package com.xyz;

-	import org.aspectj.lang.annotation.Aspect;
 	import org.aspectj.lang.annotation.Pointcut;

-	@Aspect
 	public class CommonPointcuts {

 		/**
@@ -287,10 +283,8 @@ Kotlin::
 ----
 	package com.xyz

-	import org.aspectj.lang.annotation.Aspect
 	import org.aspectj.lang.annotation.Pointcut

-	@Aspect
 	class CommonPointcuts {

 		/**
@@ -346,9 +340,9 @@ Kotlin::
 ----
 ======

-You can refer to the pointcuts defined in such an aspect anywhere you need a pointcut
-expression by referencing the fully-qualified name of the `@Aspect` class combined with
-the `@Pointcut` method's name. For example, to make the service layer transactional, you
+You can refer to the pointcuts defined in such a class anywhere you need a pointcut
+expression by referencing the fully-qualified name of the class combined with the
+`@Pointcut` method's name. For example, to make the service layer transactional, you
 could write the following which references the
 `com.xyz.CommonPointcuts.businessService()` _named pointcut_:

@@ -435,7 +435,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim",role="secondary"]
 ----
-	fun doBasicProfiling(pjp: ProceedingJoinPoint): Any {
+	fun doBasicProfiling(pjp: ProceedingJoinPoint): Any? {
 		// start stopwatch
 		val retVal = pjp.proceed()
 		// stop stopwatch
@@ -554,7 +554,7 @@ Kotlin::

 	class SimpleProfiler {

-		fun profile(call: ProceedingJoinPoint, name: String, age: Int): Any {
+		fun profile(call: ProceedingJoinPoint, name: String, age: Int): Any? {
 			val clock = StopWatch("Profiling for '$name' and '$age'")
 			try {
 				clock.start(call.toShortString())
@@ -890,7 +890,7 @@ Kotlin::
 			this.order = order
 		}

-		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 			var numAttempts = 0
 			var lockFailureException: PessimisticLockingFailureException
 			do {
@@ -493,7 +493,7 @@ Kotlin::
 	class ProfilingAspect {

 		@Around("methodsToBeProfiled()")
-		fun profile(pjp: ProceedingJoinPoint): Any {
+		fun profile(pjp: ProceedingJoinPoint): Any? {
 			val sw = StopWatch(javaClass.simpleName)
 			try {
 				sw.start(pjp.getSignature().getName())
@@ -828,13 +828,6 @@ The following table summarizes various `LoadTimeWeaver` implementations:
 | Running in Red Hat's https://www.jboss.org/jbossas/[JBoss AS] or https://www.wildfly.org/[WildFly]
 | `JBossLoadTimeWeaver`

-| Running in IBM's https://www-01.ibm.com/software/webservers/appserv/was/[WebSphere]
-| `WebSphereLoadTimeWeaver`
-
-| Running in Oracle's
-  https://www.oracle.com/technetwork/middleware/weblogic/overview/index-085209.html[WebLogic]
-| `WebLogicLoadTimeWeaver`
-
 | JVM started with Spring `InstrumentationSavingAgent`
  (`java -javaagent:path/to/spring-instrument.jar`)
 | `InstrumentationLoadTimeWeaver`
@@ -949,11 +942,11 @@ when you use Spring's LTW support in environments such as application servers an
 containers.

 [[aop-aj-ltw-environments-tomcat-jboss-etc]]
-==== Tomcat, JBoss, WebSphere, WebLogic
+==== Tomcat, JBoss, WildFly

-Tomcat, JBoss/WildFly, IBM WebSphere Application Server and Oracle WebLogic Server all
-provide a general app `ClassLoader` that is capable of local instrumentation. Spring's
-native LTW may leverage those ClassLoader implementations to provide AspectJ weaving.
+Tomcat and JBoss/WildFly provide a general app `ClassLoader` that is capable of local
+instrumentation. Spring's native LTW may leverage those ClassLoader implementations
+to provide AspectJ weaving.
 You can simply enable load-time weaving, as xref:core/aop/using-aspectj.adoc[described earlier].
 Specifically, you do not need to modify the JVM launch script to add
 `-javaagent:path/to/spring-instrument.jar`.
@@ -318,6 +318,51 @@ Java::
 ----
 ======

+[[aot.bestpractices.jpa]]
+=== JPA
+
+The JPA persistence unit has to be known upfront for certain optimizations to apply. Consider the following basic example:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+----
+	@Bean
+	LocalContainerEntityManagerFactoryBean customDBEntityManagerFactory(DataSource dataSource) {
+		LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
+		factoryBean.setDataSource(dataSource);
+		factoryBean.setPackagesToScan("com.example.app");
+		return factoryBean;
+	}
+----
+======
+
+To make sure the scanning occurs ahead of time, a `PersistenceManagedTypes` bean must be declared and used by the
+factory bean definition, as shown by the following example:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+----
+	@Bean
+	PersistenceManagedTypes persistenceManagedTypes(ResourceLoader resourceLoader) {
+		return new PersistenceManagedTypesScanner(resourceLoader)
+				.scan("com.example.app");
+	}
+
+	@Bean
+	LocalContainerEntityManagerFactoryBean customDBEntityManagerFactory(DataSource dataSource, PersistenceManagedTypes managedTypes) {
+		LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
+		factoryBean.setDataSource(dataSource);
+		factoryBean.setManagedTypes(managedTypes);
+		return factoryBean;
+	}
+----
+======

 [[aot.hints]]
 == Runtime Hints
@@ -565,6 +565,17 @@ is a convenience mechanism that sets up a xref:core/beans/factory-extension.adoc
 for you. If you need more control over the specific
 `PropertySourcesPlaceholderConfigurer` setup, you can explicitly define it as a bean yourself.

+[WARNING]
+=====
+Only one such element should be defined for a given application with the properties
+that it needs. Several property placeholders can be configured as long as they have distinct
+placeholder syntax (`${...}`).
+
+If you need to modularize the source of properties used for the replacement, you should
+not create multiple properties placeholders. Rather, each module should contribute a
+`PropertySource` to the `Environment`. Alternatively, you can create your own
+`PropertySourcesPlaceholderConfigurer` bean that gathers the properties to use.
+=====

 [[xsd-schemas-context-ac]]
 === Using `<annotation-config/>`
@@ -364,8 +364,6 @@ ignored if it cannot be autowired. This allows properties to be assigned default
 that can be optionally overridden via dependency injection.
 ====

-
-
 [[beans-autowired-annotation-constructor-resolution]]
 Injected constructor and factory method arguments are a special case since the `required`
 attribute in `@Autowired` has a somewhat different meaning due to Spring's constructor
@@ -22,10 +22,11 @@ additional metadata formats.
 In most application scenarios, explicit user code is not required to instantiate one or
 more instances of a Spring IoC container. For example, in a web application scenario, a
 simple eight (or so) lines of boilerplate web descriptor XML in the `web.xml` file
-of the application typically suffices (see xref:core/beans/context-introduction.adoc#context-create[Convenient ApplicationContext Instantiation for Web Applications]). If you use the
-https://spring.io/tools[Spring Tools for Eclipse] (an Eclipse-powered development
-environment), you can easily create this boilerplate configuration with a few mouse clicks or
-keystrokes.
+of the application typically suffices (see
+xref:core/beans/context-introduction.adoc#context-create[Convenient ApplicationContext Instantiation for Web Applications]).
+If you use the https://spring.io/tools[Spring Tools for Eclipse] (an Eclipse-powered
+development environment), you can easily create this boilerplate configuration with a
+few mouse clicks or keystrokes.

 The following diagram shows a high-level view of how Spring works. Your application classes
 are combined with configuration metadata so that, after the `ApplicationContext` is
@@ -139,9 +140,11 @@ Kotlin::
 [NOTE]
 ====
 After you learn about Spring's IoC container, you may want to know more about Spring's
-`Resource` abstraction (as described in xref:web/webflux-webclient/client-builder.adoc#webflux-client-builder-reactor-resources[Resources]), which provides a convenient
-mechanism for reading an InputStream from locations defined in a URI syntax. In particular,
-`Resource` paths are used to construct applications contexts, as described in xref:core/resources.adoc#resources-app-ctx[Application Contexts and Resource Paths].
+`Resource` abstraction (as described in
+xref:core/resources.adoc[Resources])
+which provides a convenient mechanism for reading an InputStream from locations defined
+in a URI syntax. In particular, `Resource` paths are used to construct applications contexts,
+as described in xref:core/resources.adoc#resources-app-ctx[Application Contexts and Resource Paths].
 ====

 The following example shows the service layer objects `(services.xml)` configuration file:
@@ -208,9 +211,9 @@ XML configuration file represents a logical layer or module in your architecture

 You can use the application context constructor to load bean definitions from all these
 XML fragments. This constructor takes multiple `Resource` locations, as was shown in the
-xref:core/beans/basics.adoc#beans-factory-instantiation[previous section]. Alternatively, use one or more
-occurrences of the `<import/>` element to load bean definitions from another file or
-files. The following example shows how to do so:
+xref:core/beans/basics.adoc#beans-factory-instantiation[previous section]. Alternatively,
+use one or more occurrences of the `<import/>` element to load bean definitions from
+another file or files. The following example shows how to do so:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
@@ -484,13 +484,14 @@ custom event (`BlockedListEvent` in the preceding example). This means that the
 You can register as many event listeners as you wish, but note that, by default, event
 listeners receive events synchronously. This means that the `publishEvent()` method
 blocks until all listeners have finished processing the event. One advantage of this
-synchronous and single-threaded approach is that, when a listener receives an event, it
-operates inside the transaction context of the publisher if a transaction context is
-available. If another strategy for event publication becomes necessary, see the javadoc
-for Spring's
+synchronous and single-threaded approach is that, when a listener receives an event,
+it operates inside the transaction context of the publisher if a transaction context
+is available. If another strategy for event publication becomes necessary, e.g.
+asynchronous event processing by default, see the javadoc for Spring's
 {api-spring-framework}/context/event/ApplicationEventMulticaster.html[`ApplicationEventMulticaster`] interface
 and {api-spring-framework}/context/event/SimpleApplicationEventMulticaster.html[`SimpleApplicationEventMulticaster`]
-implementation for configuration options.
+implementation for configuration options which can be applied to a custom
+"applicationEventMulticaster" bean definition.

 The following example shows the bean definitions used to register and configure each of
 the classes above:
@@ -510,6 +511,12 @@ the classes above:
 	<bean id="blockedListNotifier" class="example.BlockedListNotifier">
 		<property name="notificationAddress" value="blockedlist@example.org"/>
 	</bean>
+
+    <!-- optional: a custom ApplicationEventMulticaster definition -->
+	<bean id="applicationEventMulticaster" class="org.springframework.context.event.SimpleApplicationEventMulticaster">
+		<property name="taskExecutor" ref="..."/>
+		<property name="errorHandler" ref="..."/>
+	</bean>
 ----

 Putting it all together, when the `sendEmail()` method of the `emailService` bean is
@@ -849,6 +856,23 @@ Kotlin::
 TIP: This works not only for `ApplicationEvent` but any arbitrary object that you send as
 an event.

+Finally, as with classic `ApplicationListener` implementations, the actual multicasting
+happens via a context-wide `ApplicationEventMulticaster` at runtime. By default, this is a
+`SimpleApplicationEventMulticaster` with synchronous event publication in the caller thread.
+This can be replaced/customized through an "applicationEventMulticaster" bean definition,
+e.g. for processing all events asynchronously and/or for handling listener exceptions:
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Bean
+	ApplicationEventMulticaster applicationEventMulticaster() {
+		SimpleApplicationEventMulticaster multicaster = new SimpleApplicationEventMulticaster();
+		multicaster.setTaskExecutor(...);
+		multicaster.setErrorHandler(...);
+		return multicaster;
+	}
+----
+


 [[context-functionality-resources]]
@@ -910,7 +934,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
 	// create a startup step and start recording
-	StartupStep scanPackages = this.getApplicationStartup().start("spring.context.base-packages.scan");
+	StartupStep scanPackages = getApplicationStartup().start("spring.context.base-packages.scan");
 	// add tagging information to the current step
 	scanPackages.tag("packages", () -> Arrays.toString(basePackages));
 	// perform the actual phase we're instrumenting
@@ -924,7 +948,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
 	// create a startup step and start recording
-	val scanPackages = this.getApplicationStartup().start("spring.context.base-packages.scan")
+	val scanPackages = getApplicationStartup().start("spring.context.base-packages.scan")
 	// add tagging information to the current step
 	scanPackages.tag("packages", () -> Arrays.toString(basePackages))
 	// perform the actual phase we're instrumenting
@@ -309,7 +309,7 @@ how to configure such a bean:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
-	<!-- the factory bean, which contains a method called createInstance() -->
+	<!-- the factory bean, which contains a method called createClientServiceInstance() -->
 	<bean id="serviceLocator" class="examples.DefaultServiceLocator">
 		<!-- inject any dependencies required by this locator bean -->
 	</bean>
@@ -562,8 +562,9 @@ If no profile is active, the `dataSource` is created. You can see this
 as a way to provide a default definition for one or more beans. If any
 profile is enabled, the default profile does not apply.

-You can change the name of the default profile by using `setDefaultProfiles()` on
-the `Environment` or, declaratively, by using the `spring.profiles.default` property.
+The name of the default profile is `default`. You can change the name of
+the default profile by using `setDefaultProfiles()` on the `Environment` or,
+declaratively, by using the `spring.profiles.default` property.



@@ -23,9 +23,8 @@ You can set this property only if the `BeanPostProcessor` implements the `Ordere
 interface. If you write your own `BeanPostProcessor`, you should consider implementing
 the `Ordered` interface, too. For further details, see the javadoc of the
 {api-spring-framework}/beans/factory/config/BeanPostProcessor.html[`BeanPostProcessor`]
-and {api-spring-framework}/core/Ordered.html[`Ordered`] interfaces. See also the note
-on xref:core/beans/factory-extension.adoc#beans-factory-programmatically-registering-beanpostprocessors[programmatic registration of `BeanPostProcessor` instances]
-.
+and {api-spring-framework}/core/Ordered.html[`Ordered`] interfaces. See also the note on
+xref:core/beans/factory-extension.adoc#beans-factory-programmatically-registering-beanpostprocessors[programmatic registration of `BeanPostProcessor` instances].

 [NOTE]
 ====
@@ -280,11 +279,12 @@ and {api-spring-framework}/core/Ordered.html[`Ordered`] interfaces for more deta
 ====
 If you want to change the actual bean instances (that is, the objects that are created
 from the configuration metadata), then you instead need to use a `BeanPostProcessor`
-(described earlier in xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp[Customizing Beans by Using a `BeanPostProcessor`]). While it is technically possible
-to work with bean instances within a `BeanFactoryPostProcessor` (for example, by using
-`BeanFactory.getBean()`), doing so causes premature bean instantiation, violating the
-standard container lifecycle. This may cause negative side effects, such as bypassing
-bean post processing.
+(described earlier in
+xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp[Customizing Beans by Using a `BeanPostProcessor`]).
+While it is technically possible to work with bean instances within a `BeanFactoryPostProcessor`
+(for example, by using `BeanFactory.getBean()`), doing so causes premature bean instantiation,
+violating the standard container lifecycle. This may cause negative side effects, such as
+bypassing bean post processing.

 Also, `BeanFactoryPostProcessor` instances are scoped per-container. This is only relevant
 if you use container hierarchies. If you define a `BeanFactoryPostProcessor` in one
@@ -331,8 +331,7 @@ with placeholder values is defined:
 		<property name="locations" value="classpath:com/something/jdbc.properties"/>
 	</bean>

-	<bean id="dataSource" destroy-method="close"
-			class="org.apache.commons.dbcp.BasicDataSource">
+	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
 		<property name="driverClassName" value="${jdbc.driverClassName}"/>
 		<property name="url" value="${jdbc.url}"/>
 		<property name="username" value="${jdbc.username}"/>
@@ -373,6 +372,17 @@ The `PropertySourcesPlaceholderConfigurer` not only looks for properties in the
 file you specify. By default, if it cannot find a property in the specified properties files,
 it checks against Spring `Environment` properties and regular Java `System` properties.

+[WARNING]
+=====
+Only one such element should be defined for a given application with the properties
+that it needs. Several property placeholders can be configured as long as they have distinct
+placeholder syntax (`${...}`).
+
+If you need to modularize the source of properties used for the replacement, you should
+not create multiple properties placeholders. Rather, you should create your own
+`PropertySourcesPlaceholderConfigurer` bean that gathers the properties to use.
+=====
+
 [TIP]
 =====
 You can use the `PropertySourcesPlaceholderConfigurer` to substitute class names, which
@@ -433,8 +443,8 @@ This example file can be used with a container definition that contains a bean c

 Compound property names are also supported, as long as every component of the path
 except the final property being overridden is already non-null (presumably initialized
-by the constructors). In the following example, the `sammy` property of the `bob` property of the `fred` property of the `tom` bean
-is set to the scalar value `123`:
+by the constructors). In the following example, the `sammy` property of the `bob`
+property of the `fred` property of the `tom` bean is set to the scalar value `123`:

 [literal,subs="verbatim,quotes"]
 ----
@@ -42,6 +42,7 @@ startup and shutdown process, as driven by the container's own lifecycle.
 The lifecycle callback interfaces are described in this section.


+
 [[beans-factory-lifecycle-initializingbean]]
 === Initialization Callbacks

@@ -132,6 +133,30 @@ Kotlin::

 However, the first of the two preceding examples does not couple the code to Spring.

+[NOTE]
+====
+Be aware that `@PostConstruct` and initialization methods in general are executed
+within the container's singleton creation lock. The bean instance is only considered
+as fully initialized and ready to be published to others after returning from the
+`@PostConstruct` method. Such individual initialization methods are only meant
+for validating the configuration state and possibly preparing some data structures
+based on the given configuration but no further activity with external bean access.
+Otherwise there is a risk for an initialization deadlock.
+
+For a scenario where expensive post-initialization activity is to be triggered,
+e.g. asynchronous database preparation steps, your bean should either implement
+`SmartInitializingSingleton.afterSingletonsInstantiated()` or rely on the context
+refresh event: implementing `ApplicationListener<ContextRefreshedEvent>` or
+declaring its annotation equivalent `@EventListener(ContextRefreshedEvent.class)`.
+Those variants come after all regular singleton initialization and therefore
+outside of any singleton creation lock.
+
+Alternatively, you may implement the `(Smart)Lifecycle` interface and integrate with
+the container's overall lifecycle management, including an auto-startup mechanism,
+a pre-destroy stop step, and potential stop/restart callbacks (see below).
+====
+
+

 [[beans-factory-lifecycle-disposablebean]]
 === Destruction Callbacks
@@ -155,7 +180,7 @@ xref:core/beans/java/bean-annotation.adoc#beans-java-lifecycle-callbacks[Receivi

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
-	<bean id="exampleInitBean" class="examples.ExampleBean" destroy-method="cleanup"/>
+	<bean id="exampleDestructionBean" class="examples.ExampleBean" destroy-method="cleanup"/>
 ----

 [tabs]
@@ -189,7 +214,7 @@ The preceding definition has almost exactly the same effect as the following def

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
-	<bean id="exampleInitBean" class="examples.AnotherExampleBean"/>
+	<bean id="exampleDestructionBean" class="examples.AnotherExampleBean"/>
 ----

 [tabs]
@@ -222,32 +247,45 @@ Kotlin::

 However, the first of the two preceding definitions does not couple the code to Spring.

-TIP: You can assign the `destroy-method` attribute of a `<bean>` element a special
-`(inferred)` value, which instructs Spring to automatically detect a public `close` or
-`shutdown` method on the specific bean class. (Any class that implements
-`java.lang.AutoCloseable` or `java.io.Closeable` would therefore match.) You can also set
-this special `(inferred)` value on the `default-destroy-method` attribute of a
-`<beans>` element to apply this behavior to an entire set of beans (see
-xref:core/beans/factory-nature.adoc#beans-factory-lifecycle-default-init-destroy-methods[Default Initialization and Destroy Methods]). Note that this is the
-default behavior with Java configuration.
+Note that Spring also supports inference of destroy methods, detecting a public `close` or
+`shutdown` method. This is the default behavior for `@Bean` methods in Java configuration
+classes and automatically matches `java.lang.AutoCloseable` or `java.io.Closeable`
+implementations, not coupling the destruction logic to Spring either.
+
+TIP: For destroy method inference with XML, you may assign the `destroy-method` attribute
+of a `<bean>` element a special `(inferred)` value, which instructs Spring to automatically
+detect a public `close` or `shutdown` method on the bean class for a specific bean definition.
+You can also set this special `(inferred)` value on the `default-destroy-method` attribute
+of a `<beans>` element to apply this behavior to an entire set of bean definitions (see
+xref:core/beans/factory-nature.adoc#beans-factory-lifecycle-default-init-destroy-methods[Default Initialization and Destroy Methods]).
+
+[NOTE]
+====
+For extended shutdown phases, you may implement the `Lifecycle` interface and receive
+an early stop signal before the destroy methods of any singleton beans are called.
+You may also implement `SmartLifecycle` for a time-bound stop step where the container
+will wait for all such stop processing to complete before moving on to destroy methods.
+====
+
+

 [[beans-factory-lifecycle-default-init-destroy-methods]]
 === Default Initialization and Destroy Methods

 When you write initialization and destroy method callbacks that do not use the
 Spring-specific `InitializingBean` and `DisposableBean` callback interfaces, you
-typically write methods with names such as `init()`, `initialize()`, `dispose()`, and so
-on. Ideally, the names of such lifecycle callback methods are standardized across a
-project so that all developers use the same method names and ensure consistency.
+typically write methods with names such as `init()`, `initialize()`, `dispose()`,
+and so on. Ideally, the names of such lifecycle callback methods are standardized across
+a project so that all developers use the same method names and ensure consistency.

 You can configure the Spring container to "`look`" for named initialization and destroy
-callback method names on every bean. This means that you, as an application
-developer, can write your application classes and use an initialization callback called
-`init()`, without having to configure an `init-method="init"` attribute with each bean
-definition. The Spring IoC container calls that method when the bean is created (and in
-accordance with the standard lifecycle callback contract xref:core/beans/factory-nature.adoc#beans-factory-lifecycle[described previously]
-). This feature also enforces a consistent naming convention for
-initialization and destroy method callbacks.
+callback method names on every bean. This means that you, as an application developer,
+can write your application classes and use an initialization callback called `init()`,
+without having to configure an `init-method="init"` attribute with each bean definition.
+The Spring IoC container calls that method when the bean is created (and in accordance
+with the standard lifecycle callback contract xref:core/beans/factory-nature.adoc#beans-factory-lifecycle[described previously]).
+This feature also enforces a consistent naming convention for initialization and
+destroy method callbacks.

 Suppose that your initialization callback methods are named `init()` and your destroy
 callback methods are named `destroy()`. Your class then resembles the class in the
@@ -407,14 +445,15 @@ and closed.
 [TIP]
 ====
 Note that the regular `org.springframework.context.Lifecycle` interface is a plain
-contract for explicit start and stop notifications and does not imply auto-startup at context
-refresh time. For fine-grained control over auto-startup of a specific bean (including startup phases),
-consider implementing `org.springframework.context.SmartLifecycle` instead.
+contract for explicit start and stop notifications and does not imply auto-startup
+at context refresh time. For fine-grained control over auto-startup and for graceful
+stopping of a specific bean (including startup and stop phases), consider implementing
+the extended `org.springframework.context.SmartLifecycle` interface instead.

 Also, please note that stop notifications are not guaranteed to come before destruction.
 On regular shutdown, all `Lifecycle` beans first receive a stop notification before
-the general destruction callbacks are being propagated. However, on hot refresh during a
-context's lifetime or on stopped refresh attempts, only destroy methods are called.
+the general destruction callbacks are being propagated. However, on hot refresh during
+a context's lifetime or on stopped refresh attempts, only destroy methods are called.
 ====

 The order of startup and shutdown invocations can be important. If a "`depends-on`"
@@ -125,8 +125,8 @@ objects regardless of scope, in the case of prototypes, configured destruction
 lifecycle callbacks are not called. The client code must clean up prototype-scoped
 objects and release expensive resources that the prototype beans hold. To get
 the Spring container to release resources held by prototype-scoped beans, try using a
-custom xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp[bean post-processor], which holds a reference to
-beans that need to be cleaned up.
+custom xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp[bean post-processor]
+which holds a reference to beans that need to be cleaned up.

 In some respects, the Spring container's role in regard to a prototype-scoped bean is a
 replacement for the Java `new` operator. All lifecycle management past that point must
@@ -324,7 +324,6 @@ Kotlin::



-
 [[beans-factory-scopes-application]]
 === Application Scope

@@ -374,7 +373,6 @@ Kotlin::



-
 [[beans-factory-scopes-websocket]]
 === WebSocket Scope

@@ -384,7 +382,6 @@ xref:web/websocket/stomp/scope.adoc[WebSocket scope] for more details.



-
 [[beans-factory-scopes-other-injection]]
 === Scoped Beans as Dependencies

@@ -449,12 +446,13 @@ understand the "`why`" as well as the "`how`" behind it:
 ----
 <1> The line that defines the proxy.

+To create such a proxy, you insert a child `<aop:scoped-proxy/>` element into a
+scoped bean definition (see
+xref:core/beans/factory-scopes.adoc#beans-factory-scopes-other-injection-proxies[Choosing the Type of Proxy to Create]
+and xref:core/appendix/xsd-schemas.adoc[XML Schema-based configuration]).

-To create such a proxy, you insert a child `<aop:scoped-proxy/>` element into a scoped
-bean definition (see xref:core/beans/factory-scopes.adoc#beans-factory-scopes-other-injection-proxies[Choosing the Type of Proxy to Create] and
-xref:core/appendix/xsd-schemas.adoc[XML Schema-based configuration]).
 Why do definitions of beans scoped at the `request`, `session` and custom-scope
-levels require the `<aop:scoped-proxy/>` element?
+levels require the `<aop:scoped-proxy/>` element in common scenarios?
 Consider the following singleton bean definition and contrast it with
 what you need to define for the aforementioned scopes (note that the following
 `userPreferences` bean definition as it stands is incomplete):
@@ -513,8 +511,8 @@ the `<aop:scoped-proxy/>` element, a CGLIB-based class proxy is created.

 [NOTE]
 ====
-CGLIB proxies intercept only public method calls! Do not call non-public methods
-on such a proxy. They are not delegated to the actual scoped target object.
+CGLIB proxies do not intercept private methods. Attempting to call a private method
+on such a proxy will not delegate to the actual scoped target object.
 ====

 Alternatively, you can configure the Spring container to create standard JDK
@@ -180,9 +180,10 @@ Kotlin::
 ----
 ======

-
 The resolution mechanism is pretty much identical to constructor-based dependency
-injection. See xref:core/beans/dependencies/factory-collaborators.adoc#beans-constructor-injection[the relevant section] for more details.
+injection. See
+xref:core/beans/dependencies/factory-collaborators.adoc#beans-constructor-injection[the relevant section]
+for more details.


 [[beans-java-lifecycle-callbacks]]
@@ -317,8 +318,9 @@ type, making it harder to use for cross-reference calls in other `@Bean` methods
 intend to refer to the provided resource here).
 =====

-In the case of `BeanOne` from the example above the preceding note, it would be equally valid to call the `init()`
-method directly during construction, as the following example shows:
+In the case of `BeanOne` from the example above the preceding note, it would be
+equally valid to call the `init()` method directly during construction, as the
+following example shows:

 [tabs]
 ======
@@ -506,10 +508,10 @@ Kotlin::
 [[beans-java-bean-aliasing]]
 == Bean Aliasing

-As discussed in xref:core/beans/definition.adoc#beans-beanname[Naming Beans], it is sometimes desirable to give a single bean
-multiple names, otherwise known as bean aliasing. The `name` attribute of the `@Bean`
-annotation accepts a String array for this purpose. The following example shows how to set
-a number of aliases for a bean:
+As discussed in xref:core/beans/definition.adoc#beans-beanname[Naming Beans], it is
+sometimes desirable to give a single bean multiple names, otherwise known as bean aliasing.
+The `name` attribute of the `@Bean` annotation accepts a String array for this purpose.
+The following example shows how to set a number of aliases for a bean:

 [tabs]
 ======
@@ -113,7 +113,8 @@ issue, because no compiler is involved, and you can declare
 When using `@Configuration` classes, the Java compiler places constraints on
 the configuration model, in that references to other beans must be valid Java syntax.

-Fortunately, solving this problem is simple. As xref:core/beans/java/bean-annotation.adoc#beans-java-dependencies[we already discussed],
+Fortunately, solving this problem is simple. As
+xref:core/beans/java/bean-annotation.adoc#beans-java-dependencies[we already discussed],
 a `@Bean` method can have an arbitrary number of parameters that describe the bean
 dependencies. Consider the following more real-world scenario with several `@Configuration`
 classes, each depending on beans declared in the others:
@@ -204,7 +205,6 @@ Kotlin::
 ----
 ======

-
 There is another way to achieve the same result. Remember that `@Configuration` classes are
 ultimately only another bean in the container: This means that they can take advantage of
 `@Autowired` and `@Value` injection and other features the same as any other bean.
@@ -216,6 +216,11 @@ classes are processed quite early during the initialization of the context, and
 to be injected this way may lead to unexpected early initialization. Whenever possible, resort to
 parameter-based injection, as in the preceding example.

+Avoid access to locally defined beans within a `@PostConstruct` method on the same configuration
+class. This effectively leads to a circular reference since non-static `@Bean` methods semantically
+require a fully initialized configuration class instance to be called on. With circular references
+disallowed (e.g. in Spring Boot 2.6+), this may trigger a `BeanCurrentlyInCreationException`.
+
 Also, be particularly careful with `BeanPostProcessor` and `BeanFactoryPostProcessor` definitions
 through `@Bean`. Those should usually be declared as `static @Bean` methods, not triggering the
 instantiation of their containing configuration class. Otherwise, `@Autowired` and `@Value` may not
@@ -4,7 +4,7 @@
 Projection lets a collection drive the evaluation of a sub-expression, and the result is
 a new collection. The syntax for projection is `.![projectionExpression]`. For example,
 suppose we have a list of inventors but want the list of cities where they were born.
-Effectively, we want to evaluate 'placeOfBirth.city' for every entry in the inventor
+Effectively, we want to evaluate `placeOfBirth.city` for every entry in the inventor
 list. The following example uses projection to do so:

 [tabs]
@@ -13,16 +13,18 @@ Java::
 +
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
-	// returns ['Smiljan', 'Idvor' ]
-	List placesOfBirth = (List)parser.parseExpression("members.![placeOfBirth.city]");
+	// evaluates to ["SmilJan", "Idvor"]
+	List placesOfBirth = parser.parseExpression("members.![placeOfBirth.city]")
+			.getValue(societyContext, List.class);
 ----

 Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
-	// returns ['Smiljan', 'Idvor' ]
-	val placesOfBirth = parser.parseExpression("members.![placeOfBirth.city]") as List<*>
+	// evaluates to ["SmilJan", "Idvor"]
+	val placesOfBirth = parser.parseExpression("members.![placeOfBirth.city]")
+	 		.getValue(societyContext) as List<*>
 ----
 ======

@@ -28,13 +28,14 @@ Kotlin::
 ======

 Selection is supported for arrays and anything that implements `java.lang.Iterable` or
-`java.util.Map`. For a list or array, the selection criteria is evaluated against each
-individual element. Against a map, the selection criteria is evaluated against each map
-entry (objects of the Java type `Map.Entry`). Each map entry has its `key` and `value`
-accessible as properties for use in the selection.
+`java.util.Map`. For an array or `Iterable`, the selection expression is evaluated
+against each individual element. Against a map, the selection expression is evaluated
+against each map entry (objects of the Java type `Map.Entry`). Each map entry has its
+`key` and `value` accessible as properties for use in the selection.

-The following expression returns a new map that consists of those elements of the
-original map where the entry's value is less than 27:
+Given a `Map` stored in a variable named `#map`, the following expression returns a new
+map that consists of those elements of the original map where the entry's value is less
+than 27:

 [tabs]
 ======
@@ -42,21 +43,21 @@ Java::
 +
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
-	Map newMap = parser.parseExpression("map.?[value<27]").getValue();
+	Map newMap = parser.parseExpression("#map.?[value < 27]").getValue(Map.class);
 ----

 Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
-	val newMap = parser.parseExpression("map.?[value<27]").getValue()
+	val newMap = parser.parseExpression("#map.?[value < 27]").getValue() as Map
 ----
 ======

 In addition to returning all the selected elements, you can retrieve only the first or
-the last element. To obtain the first element matching the selection, the syntax is
-`.^[selectionExpression]`. To obtain the last matching selection, the syntax is
-`.$[selectionExpression]`.
+the last element. To obtain the first element matching the selection expression, the
+syntax is `.^[selectionExpression]`. To obtain the last element matching the selection
+expression, the syntax is `.$[selectionExpression]`.



@@ -38,5 +38,15 @@ Kotlin::
 ----
 ======

+[NOTE]
+====
+If your application or framework manages its own `EvaluationContext`, you may need to
+manually configure a `StandardTypeLocator` with a specific `ClassLoader` to ensure that
+the SpEL expression parser is able to reliably locate user types.
+
+For example, the `StandardBeanExpressionResolver` in the `spring-context` module
+configures a `StandardTypeLocator` using the bean `ClassLoader` of the corresponding
+`BeanFactory`.
+====


@@ -268,6 +268,8 @@ Java::
 	@Service
 	public class MyService {

+		private final ConversionService conversionService;
+
 		public MyService(ConversionService conversionService) {
 			this.conversionService = conversionService;
 		}
@@ -151,10 +151,10 @@ Kotlin::
 ----
 ======

-The last example we show here is for typical JDBC support. You could have the
-`DataSource` injected into an initialization method or a constructor, where you would create a
-`JdbcTemplate` and other data access support classes (such as `SimpleJdbcCall` and others) by using
-this `DataSource`. The following example autowires a `DataSource`:
+The last example we show here is for typical JDBC support. You could have the `DataSource`
+injected into an initialization method or a constructor, where you would create a `JdbcTemplate`
+and other data access support classes (such as `SimpleJdbcCall` and others) by using this
+`DataSource`. The following example autowires a `DataSource`:

 [tabs]
 ======
@@ -9,13 +9,13 @@ to the database.
 [[jdbc-batch-classic]]
 == Basic Batch Operations with `JdbcTemplate`

-You accomplish `JdbcTemplate` batch processing by implementing two methods of a special
-interface, `BatchPreparedStatementSetter`, and passing that implementation in as the second parameter
+You accomplish `JdbcTemplate` batch processing by implementing two methods of a special interface,
+`BatchPreparedStatementSetter`, and passing that implementation in as the second parameter
 in your `batchUpdate` method call. You can use the `getBatchSize` method to provide the size of
 the current batch. You can use the `setValues` method to set the values for the parameters of
-the prepared statement. This method is called the number of times that you
-specified in the `getBatchSize` call. The following example updates the `t_actor` table
-based on entries in a list, and the entire list is used as the batch:
+the prepared statement. This method is called the number of times that you specified in the
+`getBatchSize` call. The following example updates the `t_actor` table based on entries in a list,
+and the entire list is used as the batch:

 [tabs]
 ======
@@ -10,7 +10,7 @@ This section covers:
 * xref:data-access/jdbc/connections.adoc#jdbc-SingleConnectionDataSource[Using `SingleConnectionDataSource`]
 * xref:data-access/jdbc/connections.adoc#jdbc-DriverManagerDataSource[Using `DriverManagerDataSource`]
 * xref:data-access/jdbc/connections.adoc#jdbc-TransactionAwareDataSourceProxy[Using `TransactionAwareDataSourceProxy`]
-* xref:data-access/jdbc/connections.adoc#jdbc-DataSourceTransactionManager[Using `DataSourceTransactionManager`]
+* xref:data-access/jdbc/connections.adoc#jdbc-DataSourceTransactionManager[Using `DataSourceTransactionManager` / `JdbcTransactionManager`]


 [[jdbc-datasource]]
@@ -125,8 +125,12 @@ The following example shows C3P0 configuration:
 == Using `DataSourceUtils`

 The `DataSourceUtils` class is a convenient and powerful helper class that provides
-`static` methods to obtain connections from JNDI and close connections if necessary. It
-supports thread-bound connections with, for example, `DataSourceTransactionManager`.
+`static` methods to obtain connections from JNDI and close connections if necessary.
+It supports a thread-bound JDBC `Connection` with `DataSourceTransactionManager` but
+also with `JtaTransactionManager` and `JpaTransactionManager`.
+
+Note that `JdbcTemplate` implies `DataSourceUtils` connection access, using it
+behind every JDBC operation, implicitly participating in an ongoing transaction.


 [[jdbc-SmartDataSource]]
@@ -165,7 +169,6 @@ In contrast to `DriverManagerDataSource`, it reuses the same connection all the
 avoiding excessive creation of physical connections.


-
 [[jdbc-DriverManagerDataSource]]
 == Using `DriverManagerDataSource`

@@ -201,29 +204,44 @@ javadoc for more details.


 [[jdbc-DataSourceTransactionManager]]
-== Using `DataSourceTransactionManager`
+== Using `DataSourceTransactionManager` / `JdbcTransactionManager`

 The `DataSourceTransactionManager` class is a `PlatformTransactionManager`
-implementation for single JDBC data sources. It binds a JDBC connection from the
-specified data source to the currently executing thread, potentially allowing for one
-thread connection per data source.
+implementation for a single JDBC `DataSource`. It binds a JDBC `Connection`
+from the specified `DataSource` to the currently executing thread, potentially
+allowing for one thread-bound `Connection` per `DataSource`.

-Application code is required to retrieve the JDBC connection through
-`DataSourceUtils.getConnection(DataSource)` instead of Jakarta EE's standard
+Application code is required to retrieve the JDBC `Connection` through
+`DataSourceUtils.getConnection(DataSource)` instead of Java EE's standard
 `DataSource.getConnection`. It throws unchecked `org.springframework.dao` exceptions
-instead of checked `SQLExceptions`. All framework classes (such as `JdbcTemplate`) use this
-strategy implicitly. If not used with this transaction manager, the lookup strategy
-behaves exactly like the common one. Thus, it can be used in any case.
+instead of checked `SQLExceptions`. All framework classes (such as `JdbcTemplate`) use
+this strategy implicitly. If not used with a transaction manager, the lookup strategy
+behaves exactly like `DataSource.getConnection` and can therefore be used in any case.

-The `DataSourceTransactionManager` class supports custom isolation levels and timeouts
-that get applied as appropriate JDBC statement query timeouts. To support the latter,
-application code must either use `JdbcTemplate` or call the
-`DataSourceUtils.applyTransactionTimeout(..)` method for each created statement.
+The `DataSourceTransactionManager` class supports savepoints (`PROPAGATION_NESTED`),
+custom isolation levels, and timeouts that get applied as appropriate JDBC statement
+query timeouts. To support the latter, application code must either use `JdbcTemplate` or
+call the `DataSourceUtils.applyTransactionTimeout(..)` method for each created statement.

-You can use this implementation instead of `JtaTransactionManager` in the single-resource
-case, as it does not require the container to support JTA. Switching between
-both is just a matter of configuration, provided you stick to the required connection lookup
-pattern. JTA does not support custom isolation levels.
+You can use `DataSourceTransactionManager` instead of `JtaTransactionManager` in the
+single-resource case, as it does not require the container to support a JTA transaction
+coordinator. Switching between these transaction managers is just a matter of configuration,
+provided you stick to the required connection lookup pattern. Note that JTA does not support
+savepoints or custom isolation levels and has a different timeout mechanism but otherwise
+exposes similar behavior in terms of JDBC resources and JDBC commit/rollback management.
+
+NOTE: As of 5.3, Spring provides an extended `JdbcTransactionManager` variant which adds
+exception translation capabilities on commit/rollback (aligned with `JdbcTemplate`).
+Where `DataSourceTransactionManager` will only ever throw `TransactionSystemException`
+(analogous to JTA), `JdbcTransactionManager` translates database locking failures etc to
+corresponding `DataAccessException` subclasses. Note that application code needs to be
+prepared for such exceptions, not exclusively expecting `TransactionSystemException`.
+In scenarios where that is the case, `JdbcTransactionManager` is the recommended choice.
+
+In terms of exception behavior, `JdbcTransactionManager` is roughly equivalent to
+`JpaTransactionManager` and also to `R2dbcTransactionManager`, serving as an immediate
+companion/replacement for each other. `DataSourceTransactionManager` on the other hand
+is equivalent to `JtaTransactionManager` and can serve as a direct replacement there.



@@ -501,8 +501,8 @@ extend from it, your sub-class inherits a `setDataSource(..)` method from the
 Regardless of which of the above template initialization styles you choose to use (or
 not), it is seldom necessary to create a new instance of a `JdbcTemplate` class each
 time you want to run SQL. Once configured, a `JdbcTemplate` instance is thread-safe.
-If your application accesses multiple
-databases, you may want multiple `JdbcTemplate` instances, which requires multiple `DataSources` and, subsequently, multiple differently
+If your application accesses multiple databases, you may want multiple `JdbcTemplate`
+instances, which requires multiple `DataSources` and, subsequently, multiple differently
 configured `JdbcTemplate` instances.


@@ -531,11 +531,8 @@ Java::
 	}

 	public int countOfActorsByFirstName(String firstName) {
-
-		String sql = "select count(*) from T_ACTOR where first_name = :first_name";
-
+		String sql = "select count(*) from t_actor where first_name = :first_name";
 		SqlParameterSource namedParameters = new MapSqlParameterSource("first_name", firstName);
-
 		return this.namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Integer.class);
 	}
 ----
@@ -547,7 +544,7 @@ Kotlin::
 	private val namedParameterJdbcTemplate = NamedParameterJdbcTemplate(dataSource)

 	fun countOfActorsByFirstName(firstName: String): Int {
-		val sql = "select count(*) from T_ACTOR where first_name = :first_name"
+		val sql = "select count(*) from t_actor where first_name = :first_name"
 		val namedParameters = MapSqlParameterSource("first_name", firstName)
 		return namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Int::class.java)!!
 	}
@@ -579,12 +576,9 @@ Java::
 	}

 	public int countOfActorsByFirstName(String firstName) {
-
-		String sql = "select count(*) from T_ACTOR where first_name = :first_name";
-
+		String sql = "select count(*) from t_actor where first_name = :first_name";
 		Map<String, String> namedParameters = Collections.singletonMap("first_name", firstName);
-
-		return this.namedParameterJdbcTemplate.queryForObject(sql, namedParameters,  Integer.class);
+		return this.namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Integer.class);
 	}
 ----

@@ -596,7 +590,7 @@ Kotlin::
 	private val namedParameterJdbcTemplate = NamedParameterJdbcTemplate(dataSource)

 	fun countOfActorsByFirstName(firstName: String): Int {
-		val sql = "select count(*) from T_ACTOR where first_name = :first_name"
+		val sql = "select count(*) from t_actor where first_name = :first_name"
 		val namedParameters = mapOf("first_name" to firstName)
 		return namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Int::class.java)!!
 	}
@@ -644,7 +638,6 @@ Java::
 		}

 		// setters omitted...
-
 	}
 ----

@@ -673,12 +666,9 @@ Java::
 	}

 	public int countOfActors(Actor exampleActor) {
-
 		// notice how the named parameters match the properties of the above 'Actor' class
-		String sql = "select count(*) from T_ACTOR where first_name = :firstName and last_name = :lastName";
-
+		String sql = "select count(*) from t_actor where first_name = :firstName and last_name = :lastName";
 		SqlParameterSource namedParameters = new BeanPropertySqlParameterSource(exampleActor);
-
 		return this.namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Integer.class);
 	}
 ----
@@ -694,7 +684,7 @@ Kotlin::

 	fun countOfActors(exampleActor: Actor): Int {
 		// notice how the named parameters match the properties of the above 'Actor' class
-		val sql = "select count(*) from T_ACTOR where first_name = :firstName and last_name = :lastName"
+		val sql = "select count(*) from t_actor where first_name = :firstName and last_name = :lastName"
 		val namedParameters = BeanPropertySqlParameterSource(exampleActor)
 		return namedParameterJdbcTemplate.queryForObject(sql, namedParameters, Int::class.java)!!
 	}
@@ -707,8 +697,8 @@ functionality that is present only in the `JdbcTemplate` class, you can use the
 `getJdbcOperations()` method to access the wrapped `JdbcTemplate` through the
 `JdbcOperations` interface.

-See also xref:data-access/jdbc/core.adoc#jdbc-JdbcTemplate-idioms[`JdbcTemplate` Best Practices] for guidelines on using the
-`NamedParameterJdbcTemplate` class in the context of an application.
+See also xref:data-access/jdbc/core.adoc#jdbc-JdbcTemplate-idioms[`JdbcTemplate` Best Practices]
+for guidelines on using the `NamedParameterJdbcTemplate` class in the context of an application.


 [[jdbc-SQLExceptionTranslator]]
@@ -718,12 +708,22 @@ See also xref:data-access/jdbc/core.adoc#jdbc-JdbcTemplate-idioms[`JdbcTemplate`
 between ``SQLException``s and Spring's own `org.springframework.dao.DataAccessException`,
 which is agnostic in regard to data access strategy. Implementations can be generic (for
 example, using SQLState codes for JDBC) or proprietary (for example, using Oracle error
-codes) for greater precision.
+codes) for greater precision. This exception translation mechanism is used behind the
+the common `JdbcTemplate` and `JdbcTransactionManager` entry points which do not
+propagate `SQLException` but rather `DataAccessException`.
+
+NOTE: As of 6.0, the default exception translator is `SQLExceptionSubclassTranslator`,
+detecting JDBC 4 `SQLException` subclasses with a few extra checks, and with a fallback
+to `SQLState` introspection through `SQLStateSQLExceptionTranslator`. This is usually
+sufficient for common database access and does not require vendor-specific detection.
+For backwards compatibility, consider using `SQLErrorCodeSQLExceptionTranslator` as
+described below, potentially with custom error code mappings.

 `SQLErrorCodeSQLExceptionTranslator` is the implementation of `SQLExceptionTranslator`
-that is used by default. This implementation uses specific vendor codes. It is more
-precise than the `SQLState` implementation. The error code translations are based on
-codes held in a JavaBean type class called `SQLErrorCodes`. This class is created and
+that is used by default when a file named `sql-error-codes.xml` is present in the root
+of the classpath. This implementation uses specific vendor codes. It is more precise than
+`SQLState` or `SQLException` subclass translation. The error code translations are based
+on codes held in a JavaBean type class called `SQLErrorCodes`. This class is created and
 populated by an `SQLErrorCodesFactory`, which (as the name suggests) is a factory for
 creating `SQLErrorCodes` based on the contents of a configuration file named
 `sql-error-codes.xml`. This file is populated with vendor codes and based on the
@@ -744,8 +744,8 @@ The `SQLErrorCodeSQLExceptionTranslator` applies matching rules in the following
  translator. If this translation is not available, the next fallback translator is
  the `SQLStateSQLExceptionTranslator`.

-NOTE: The `SQLErrorCodesFactory` is used by default to define `Error` codes and custom exception
-translations. They are looked up in a file named `sql-error-codes.xml` from the
+NOTE: The `SQLErrorCodesFactory` is used by default to define error codes and custom
+exception translations. They are looked up in a file named `sql-error-codes.xml` from the
 classpath, and the matching `SQLErrorCodes` instance is located based on the database
 name from the database metadata of the database in use.

@@ -784,12 +784,12 @@ Kotlin::
 ----
 ======

-In the preceding example, the specific error code (`-12345`) is translated, while other errors are
-left to be translated by the default translator implementation. To use this custom
-translator, you must pass it to the `JdbcTemplate` through the method
-`setExceptionTranslator`, and you must use this `JdbcTemplate` for all of the data access
-processing where this translator is needed. The following example shows how you can use this custom
-translator:
+In the preceding example, the specific error code (`-12345`) is translated while
+other errors are left to be translated by the default translator implementation.
+To use this custom translator, you must pass it to the `JdbcTemplate` through the
+method `setExceptionTranslator`, and you must use this `JdbcTemplate` for all of the
+data access processing where this translator is needed. The following example shows
+how you can use this custom translator:

 [tabs]
 ======
@@ -800,7 +800,6 @@ Java::
 	private JdbcTemplate jdbcTemplate;

 	public void setDataSource(DataSource dataSource) {
-
 		// create a JdbcTemplate and set data source
 		this.jdbcTemplate = new JdbcTemplate();
 		this.jdbcTemplate.setDataSource(dataSource);
@@ -809,7 +808,6 @@ Java::
 		CustomSQLErrorCodesTranslator tr = new CustomSQLErrorCodesTranslator();
 		tr.setDataSource(dataSource);
 		this.jdbcTemplate.setExceptionTranslator(tr);
-
 	}

 	public void updateShippingCharge(long orderId, long pct) {
@@ -3,30 +3,30 @@

 The Spring Framework's JDBC abstraction framework consists of four different packages:

-* `core`: The `org.springframework.jdbc.core` package contains the `JdbcTemplate` class and its
-various callback interfaces, plus a variety of related classes. A subpackage named
-`org.springframework.jdbc.core.simple` contains the `SimpleJdbcInsert` and
+* `core`: The `org.springframework.jdbc.core` package contains the `JdbcTemplate` class
+and its various callback interfaces, plus a variety of related classes. A subpackage
+named `org.springframework.jdbc.core.simple` contains the `SimpleJdbcInsert` and
 `SimpleJdbcCall` classes. Another subpackage named
 `org.springframework.jdbc.core.namedparam` contains the `NamedParameterJdbcTemplate`
 class and the related support classes. See xref:data-access/jdbc/core.adoc[Using the JDBC Core Classes to Control Basic JDBC Processing and Error Handling], xref:data-access/jdbc/advanced.adoc[JDBC Batch Operations], and
 xref:data-access/jdbc/simple.adoc[Simplifying JDBC Operations with the `SimpleJdbc` Classes].

-* `datasource`: The `org.springframework.jdbc.datasource` package contains a utility class for easy
-`DataSource` access and various simple `DataSource` implementations that you can use for
-testing and running unmodified JDBC code outside of a Jakarta EE container. A subpackage
-named `org.springfamework.jdbc.datasource.embedded` provides support for creating
+* `datasource`: The `org.springframework.jdbc.datasource` package contains a utility class
+for easy `DataSource` access and various simple `DataSource` implementations that you can
+use for testing and running unmodified JDBC code outside of a Jakarta EE container. A subpackage
+named `org.springframework.jdbc.datasource.embedded` provides support for creating
 embedded databases by using Java database engines, such as HSQL, H2, and Derby. See
 xref:data-access/jdbc/connections.adoc[Controlling Database Connections] and xref:data-access/jdbc/embedded-database-support.adoc[Embedded Database Support].

-* `object`: The `org.springframework.jdbc.object` package contains classes that represent RDBMS
-queries, updates, and stored procedures as thread-safe, reusable objects. See
+* `object`: The `org.springframework.jdbc.object` package contains classes that represent
+RDBMS queries, updates, and stored procedures as thread-safe, reusable objects. See
 xref:data-access/jdbc/object.adoc[Modeling JDBC Operations as Java Objects]. This approach is modeled by JDO, although objects returned by queries
 are naturally disconnected from the database. This higher-level of JDBC abstraction
 depends on the lower-level abstraction in the `org.springframework.jdbc.core` package.

-* `support`: The `org.springframework.jdbc.support` package provides `SQLException` translation
-functionality and some utility classes. Exceptions thrown during JDBC processing are
-translated to exceptions defined in the `org.springframework.dao` package. This means
+* `support`: The `org.springframework.jdbc.support` package provides `SQLException`
+translation functionality and some utility classes. Exceptions thrown during JDBC processing
+are translated to exceptions defined in the `org.springframework.dao` package. This means
 that code using the Spring JDBC abstraction layer does not need to implement JDBC or
 RDBMS-specific error handling. All translated exceptions are unchecked, which gives you
 the option of catching the exceptions from which you can recover while letting other
@@ -121,18 +121,17 @@ Kotlin::
 <3> Using the method `setBlobAsBinaryStream` to pass in the contents of the BLOB.
 ======

-
 [NOTE]
 ====
 If you invoke the `setBlobAsBinaryStream`, `setClobAsAsciiStream`, or
 `setClobAsCharacterStream` method on the `LobCreator` returned from
-`DefaultLobHandler.getLobCreator()`, you can optionally specify a negative value for the
-`contentLength` argument. If the specified content length is negative, the
+`DefaultLobHandler.getLobCreator()`, you can optionally specify a negative value
+for the `contentLength` argument. If the specified content length is negative, the
 `DefaultLobHandler` uses the JDBC 4.0 variants of the set-stream methods without a
 length parameter. Otherwise, it passes the specified length on to the driver.

-See the documentation for the JDBC driver you use to verify that it supports streaming a
-LOB without providing the content length.
+See the documentation for the JDBC driver you use to verify that it supports streaming
+a LOB without providing the content length.
 ====

 Now it is time to read the LOB data from the database. Again, you use a `JdbcTemplate`
@@ -184,15 +183,15 @@ variable list of values. A typical example would be `select * from T_ACTOR where
 JDBC standard. You cannot declare a variable number of placeholders. You need a number
 of variations with the desired number of placeholders prepared, or you need to generate
 the SQL string dynamically once you know how many placeholders are required. The named
-parameter support provided in the `NamedParameterJdbcTemplate` and `JdbcTemplate` takes
-the latter approach. You can pass in the values as a `java.util.List` of primitive objects. This
-list is used to insert the required placeholders and pass in the values during
-statement execution.
+parameter support provided in the `NamedParameterJdbcTemplate` takes the latter approach.
+You can pass in the values as a `java.util.List` (or any `Iterable`) of simple values.
+This list is used to insert the required placeholders into the actual SQL statement
+and pass in the values during statement execution.

-NOTE: Be careful when passing in many values. The JDBC standard does not guarantee that you
-can use more than 100 values for an `in` expression list. Various databases exceed this
-number, but they usually have a hard limit for how many values are allowed. For example, Oracle's
-limit is 1000.
+NOTE: Be careful when passing in many values. The JDBC standard does not guarantee that
+you can use more than 100 values for an `IN` expression list. Various databases exceed
+this number, but they usually have a hard limit for how many values are allowed.
+For example, Oracle's limit is 1000.

 In addition to the primitive values in the value list, you can create a `java.util.List`
 of object arrays. This list can support multiple expressions being defined for the `in`
@@ -88,12 +88,6 @@ You can use this option for full JPA capabilities in a Spring-based application
 This includes web containers such as Tomcat, stand-alone applications, and
 integration tests with sophisticated persistence requirements.

-NOTE: If you want to specifically configure a Hibernate setup, an immediate alternative
-is to set up a native Hibernate `LocalSessionFactoryBean` instead of a plain JPA
-`LocalContainerEntityManagerFactoryBean`, letting it interact with JPA access code
-as well as native Hibernate access code.
-See xref:data-access/orm/jpa.adoc#orm-jpa-hibernate[Native Hibernate setup for JPA interaction] for details.
-
 The `LocalContainerEntityManagerFactoryBean` gives full control over
 `EntityManagerFactory` configuration and is appropriate for environments where
 fine-grained customization is required. The `LocalContainerEntityManagerFactoryBean`
@@ -187,6 +181,7 @@ and automatic propagation of the weaver to all weaver-aware beans:
 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
 	<context:load-time-weaver/>
+
 	<bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
 		...
 	</bean>
@@ -273,25 +268,25 @@ The actual JPA provider bootstrapping is handed off to the specified executor an
 running in parallel, to the application bootstrap thread. The exposed `EntityManagerFactory`
 proxy can be injected into other application components and is even able to respond to
 `EntityManagerFactoryInfo` configuration inspection. However, once the actual JPA provider
-is being accessed by other components (for example, calling `createEntityManager`), those calls
-block until the background bootstrapping has completed. In particular, when you use
+is being accessed by other components (for example, calling `createEntityManager`), those
+calls block until the background bootstrapping has completed. In particular, when you use
 Spring Data JPA, make sure to set up deferred bootstrapping for its repositories as well.


 [[orm-jpa-dao]]
 == Implementing DAOs Based on JPA: `EntityManagerFactory` and `EntityManager`

-NOTE: Although `EntityManagerFactory` instances are thread-safe, `EntityManager` instances are
-not. The injected JPA `EntityManager` behaves like an `EntityManager` fetched from an
+NOTE: Although `EntityManagerFactory` instances are thread-safe, `EntityManager` instances
+are not. The injected JPA `EntityManager` behaves like an `EntityManager` fetched from an
 application server's JNDI environment, as defined by the JPA specification. It delegates
 all calls to the current transactional `EntityManager`, if any. Otherwise, it falls back
 to a newly created `EntityManager` per operation, in effect making its usage thread-safe.

 It is possible to write code against the plain JPA without any Spring dependencies, by
 using an injected `EntityManagerFactory` or `EntityManager`. Spring can understand the
-`@PersistenceUnit` and `@PersistenceContext` annotations both at the field and the method level
-if a `PersistenceAnnotationBeanPostProcessor` is enabled. The following example shows a plain JPA DAO implementation
-that uses the `@PersistenceUnit` annotation:
+`@PersistenceUnit` and `@PersistenceContext` annotations both at the field and the method
+level if a `PersistenceAnnotationBeanPostProcessor` is enabled. The following example
+shows a plain JPA DAO implementation that uses the `@PersistenceUnit` annotation:

 [tabs]
 ======
@@ -384,9 +379,9 @@ Consider the following example:
 ----

 The main problem with such a DAO is that it always creates a new `EntityManager` through
-the factory. You can avoid this by requesting a transactional `EntityManager` (also
-called a "`shared EntityManager`" because it is a shared, thread-safe proxy for the actual
-transactional EntityManager) to be injected instead of the factory. The following example shows how to do so:
+the factory. You can avoid this by requesting a transactional `EntityManager` (also called a
+"`shared EntityManager`" because it is a shared, thread-safe proxy for the actual transactional
+EntityManager) to be injected instead of the factory. The following example shows how to do so:

 [tabs]
 ======
@@ -425,24 +420,24 @@ Kotlin::
 ----
 ======

-The `@PersistenceContext` annotation has an optional attribute called `type`, which defaults to
-`PersistenceContextType.TRANSACTION`. You can use this default to receive a shared
+The `@PersistenceContext` annotation has an optional attribute called `type`, which defaults
+to `PersistenceContextType.TRANSACTION`. You can use this default to receive a shared
 `EntityManager` proxy. The alternative, `PersistenceContextType.EXTENDED`, is a completely
 different affair. This results in a so-called extended `EntityManager`, which is not
 thread-safe and, hence, must not be used in a concurrently accessed component, such as a
-Spring-managed singleton bean. Extended `EntityManager` instances are only supposed to be used in
-stateful components that, for example, reside in a session, with the lifecycle of the
+Spring-managed singleton bean. Extended `EntityManager` instances are only supposed to be used
+in stateful components that, for example, reside in a session, with the lifecycle of the
 `EntityManager` not tied to a current transaction but rather being completely up to the
 application.

 .Method- and field-level Injection
 ****
-You can apply annotations that indicate dependency injections (such as `@PersistenceUnit` and
-`@PersistenceContext`) on field or methods inside a class -- hence the
-expressions "`method-level injection`" and "`field-level injection`". Field-level
-annotations are concise and easier to use while method-level annotations allow for further
-processing of the injected dependency. In both cases, the member visibility (public,
-protected, or private) does not matter.
+You can apply annotations that indicate dependency injections (such as `@PersistenceUnit`
+and `@PersistenceContext`) on field or methods inside a class -- hence the expressions
+"`method-level injection`" and "`field-level injection`". Field-level annotations are
+concise and easier to use while method-level annotations allow for further processing of the
+injected dependency. In both cases, the member visibility (public, protected, or private)
+does not matter.

 What about class-level annotations?

@@ -451,21 +446,62 @@ injection.
 ****

 The injected `EntityManager` is Spring-managed (aware of the ongoing transaction).
-Even though the new DAO implementation uses method-level
-injection of an `EntityManager` instead of an `EntityManagerFactory`, no change is
-required in the application context XML, due to annotation usage.
+Even though the new DAO implementation uses method-level injection of an `EntityManager`
+instead of an `EntityManagerFactory`, no change is required in the bean definition
+due to annotation usage.

 The main advantage of this DAO style is that it depends only on the Java Persistence API.
 No import of any Spring class is required. Moreover, as the JPA annotations are understood,
 the injections are applied automatically by the Spring container. This is appealing from
 a non-invasiveness perspective and can feel more natural to JPA developers.

+[[orm-jpa-dao-autowired]]
+=== Implementing DAOs Based on `@Autowired` (typically with constructor-based injection)
+
+`@PersistenceUnit` and `@PersistenceContext` can only be declared on methods and fields.
+What about providing JPA resources via constructors and other `@Autowired` injection points?
+
+`EntityManagerFactory` can easily be injected via constructors and `@Autowired` fields/methods
+as long as the target is defined as a bean, e.g. via `LocalContainerEntityManagerFactoryBean`.
+The injection point matches the original `EntityManagerFactory` definition by type as-is.
+
+However, an `@PersistenceContext`-style shared `EntityManager` reference is not available for
+regular dependency injection out of the box. In order to make it available for type-based
+matching as required by `@Autowired`, consider defining a `SharedEntityManagerBean` as a
+companion for your `EntityManagerFactory` definition:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
+		...
+	</bean>
+
+	<bean id="em" class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
+		<property name="entityManagerFactory" ref="emf"/>
+	</bean>
+----
+
+Alternatively, you may define an `@Bean` method based on `SharedEntityManagerCreator`:
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Bean("em")
+	public static EntityManager sharedEntityManager(EntityManagerFactory emf) {
+		return SharedEntityManagerCreator.createSharedEntityManager(emf);
+	}
+----
+
+In case of multiple persistence units, each `EntityManagerFactory` definition needs to be
+accompanied by a corresponding `EntityManager` bean definition, ideally with qualifiers
+that match with the distinct `EntityManagerFactory` definition in order to distinguish
+the persistence units via `@Autowired @Qualifier("...")`.
+

 [[orm-jpa-tx]]
-== Spring-driven JPA transactions
+== Spring-driven JPA Transactions

-NOTE: We strongly encourage you to read xref:data-access/transaction/declarative.adoc[Declarative Transaction Management], if you have not
-already done so, to get more detailed coverage of Spring's declarative transaction support.
+NOTE: We strongly encourage you to read xref:data-access/transaction/declarative.adoc[Declarative Transaction Management],
+if you have not already done so, to get more detailed coverage of Spring's declarative transaction support.

 The recommended strategy for JPA is local transactions through JPA's native transaction
 support. Spring's `JpaTransactionManager` provides many capabilities known from local
@@ -478,11 +514,6 @@ to JDBC access code that accesses the same `DataSource`, provided that the regis
 Spring provides dialects for the EclipseLink and Hibernate JPA implementations.
 See the xref:data-access/orm/jpa.adoc#orm-jpa-dialect[next section] for details on the `JpaDialect` mechanism.

-NOTE: As an immediate alternative, Spring's native `HibernateTransactionManager` is capable
-of interacting with JPA access code, adapting to several Hibernate specifics and providing
-JDBC interaction. This makes particular sense in combination with `LocalSessionFactoryBean`
-setup. See xref:data-access/orm/jpa.adoc#orm-jpa-hibernate[Native Hibernate Setup for JPA Interaction] for details.
-

 [[orm-jpa-dialect]]
 == Understanding `JpaDialect` and `JpaVendorAdapter`
@@ -495,7 +526,7 @@ features supported by Spring, usually in a vendor-specific manner:
 * Applying specific transaction semantics (such as custom isolation level or transaction
  timeout)
 * Retrieving the transactional JDBC `Connection` (for exposure to JDBC-based DAOs)
-* Advanced translation of `PersistenceExceptions` to Spring `DataAccessExceptions`
+* Advanced translation of `PersistenceException` to Spring's `DataAccessException`

 This is particularly valuable for special transaction semantics and for advanced
 translation of exception. The default implementation (`DefaultJpaDialect`) does
@@ -11,11 +11,13 @@ specification effort to standardize access to SQL databases using reactive patte
 The Spring Framework's R2DBC abstraction framework consists of two different packages:

 * `core`: The `org.springframework.r2dbc.core` package contains the `DatabaseClient`
-class plus a variety of related classes. See xref:data-access/r2dbc.adoc#r2dbc-core[Using the R2DBC Core Classes to Control Basic R2DBC Processing and Error Handling].
+class plus a variety of related classes. See
+xref:data-access/r2dbc.adoc#r2dbc-core[Using the R2DBC Core Classes to Control Basic R2DBC Processing and Error Handling].

 * `connection`: The `org.springframework.r2dbc.connection` package contains a utility class
 for easy `ConnectionFactory` access and various simple `ConnectionFactory` implementations
-that you can use for testing and running unmodified R2DBC. See xref:data-access/r2dbc.adoc#r2dbc-connections[Controlling Database Connections].
+that you can use for testing and running unmodified R2DBC. See
+xref:data-access/r2dbc.adoc#r2dbc-connections[Controlling Database Connections].


 [[r2dbc-core]]
@@ -31,6 +33,7 @@ including error handling. It includes the following topics:
 * xref:data-access/r2dbc.adoc#r2dbc-DatabaseClient-filter[Statement Filters]
 * xref:data-access/r2dbc.adoc#r2dbc-auto-generated-keys[Retrieving Auto-generated Keys]

+
 [[r2dbc-DatabaseClient]]
 === Using `DatabaseClient`

@@ -43,8 +46,9 @@ SQL and extract results. The `DatabaseClient` class:
 * Runs SQL queries
 * Update statements and stored procedure calls
 * Performs iteration over `Result` instances
-* Catches R2DBC exceptions and translates them to the generic, more informative, exception
-hierarchy defined in the `org.springframework.dao` package. (See xref:data-access/dao.adoc#dao-exceptions[Consistent Exception Hierarchy].)
+* Catches R2DBC exceptions and translates them to the generic, more informative,
+exception hierarchy defined in the `org.springframework.dao` package.
+(See xref:data-access/dao.adoc#dao-exceptions[Consistent Exception Hierarchy].)

 The client has a functional, fluent API using reactive types for declarative composition.

@@ -250,7 +254,6 @@ Kotlin::
 ----
 ======

-
 [[r2dbc-DatabaseClient-mapping-null]]
 .What about `null`?
 ****
@@ -315,10 +318,10 @@ The following example shows parameter binding for a query:

 [source,java]
 ----
-db.sql("INSERT INTO person (id, name, age) VALUES(:id, :name, :age)")
-    .bind("id", "joe")
-    .bind("name", "Joe")
-    .bind("age", 34);
+    db.sql("INSERT INTO person (id, name, age) VALUES(:id, :name, :age)")
+	    	.bind("id", "joe")
+	    	.bind("name", "Joe")
+			.bind("age", 34);
 ----

 .R2DBC Native Bind Markers
@@ -327,7 +330,7 @@ R2DBC uses database-native bind markers that depend on the actual database vendo
 As an example, Postgres uses indexed markers, such as `$1`, `$2`, `$n`.
 Another example is SQL Server, which uses named bind markers prefixed with `@`.

-This is different from JDBC, which requires `?` as bind markers.
+This is different from JDBC which requires `?` as bind markers.
 In JDBC, the actual drivers translate `?` bind markers to database-native
 markers as part of their statement execution.

@@ -363,7 +366,7 @@ Java::
 	tuples.add(new Object[] {"Ann",  50});

 	client.sql("SELECT id, name, state FROM table WHERE (name, age) IN (:tuples)")
-	    .bind("tuples", tuples);
+		    .bind("tuples", tuples);
 ----

 Kotlin::
@@ -375,7 +378,7 @@ Kotlin::
 	tuples.add(arrayOf("Ann", 50))

 	client.sql("SELECT id, name, state FROM table WHERE (name, age) IN (:tuples)")
-	    .bind("tuples", tuples)
+		    .bind("tuples", tuples)
 ----
 ======

@@ -390,7 +393,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
 	client.sql("SELECT id, name, state FROM table WHERE age IN (:ages)")
-	    .bind("ages", Arrays.asList(35, 50));
+		    .bind("ages", Arrays.asList(35, 50));
 ----

 Kotlin::
@@ -402,7 +405,7 @@ Kotlin::
 	tuples.add(arrayOf("Ann", 50))

 	client.sql("SELECT id, name, state FROM table WHERE age IN (:ages)")
-	    .bind("tuples", arrayOf(35, 50))
+		    .bind("tuples", arrayOf(35, 50))
 ----
 ======

@@ -429,9 +432,9 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
 	client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-	    .filter((s, next) -> next.execute(s.returnGeneratedValues("id")))
-	    .bind("name", …)
-	    .bind("state", …);
+		    .filter((s, next) -> next.execute(s.returnGeneratedValues("id")))
+		    .bind("name", …)
+		    .bind("state", …);
 ----

 Kotlin::
@@ -439,9 +442,9 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
 	client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-				.filter { s: Statement, next: ExecuteFunction -> next.execute(s.returnGeneratedValues("id")) }
-				.bind("name", …)
-				.bind("state", …)
+			.filter { s: Statement, next: ExecuteFunction -> next.execute(s.returnGeneratedValues("id")) }
+			.bind("name", …)
+			.bind("state", …)
 ----
 ======

@@ -455,10 +458,10 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
 	client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-	    .filter(statement -> s.returnGeneratedValues("id"));
+		    .filter(statement -> s.returnGeneratedValues("id"));

 	client.sql("SELECT id, name, state FROM table")
-	    .filter(statement -> s.fetchSize(25));
+		    .filter(statement -> s.fetchSize(25));
 ----

 Kotlin::
@@ -466,10 +469,10 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
 	client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-	    .filter { statement -> s.returnGeneratedValues("id") }
+		    .filter { statement -> s.returnGeneratedValues("id") }

 	client.sql("SELECT id, name, state FROM table")
-	    .filter { statement -> s.fetchSize(25) }
+		    .filter { statement -> s.fetchSize(25) }
 ----
 ======

@@ -593,7 +596,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 ----
 	Mono<Integer> generatedId = client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-	    .filter(statement -> s.returnGeneratedValues("id"))
+			.filter(statement -> s.returnGeneratedValues("id"))
 			.map(row -> row.get("id", Integer.class))
 			.first();

@@ -605,7 +608,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 ----
 	val generatedId = client.sql("INSERT INTO table (name, state) VALUES(:name, :state)")
-	    .filter { statement -> s.returnGeneratedValues("id") }
+			.filter { statement -> s.returnGeneratedValues("id") }
 			.map { row -> row.get("id", Integer.class) }
 			.awaitOne()

@@ -672,7 +675,6 @@ Kotlin::
 [[r2dbc-ConnectionFactoryUtils]]
 === Using `ConnectionFactoryUtils`

-
 The `ConnectionFactoryUtils` class is a convenient and powerful helper class
 that provides `static` methods to obtain connections from `ConnectionFactory`
 and close connections (if necessary).
@@ -718,19 +720,15 @@ javadoc for more details.
 === Using `R2dbcTransactionManager`

 The `R2dbcTransactionManager` class is a `ReactiveTransactionManager` implementation for
-single R2DBC data sources. It binds an R2DBC connection from the specified connection factory
-to the subscriber `Context`, potentially allowing for one subscriber connection for each
-connection factory.
+a single R2DBC `ConnectionFactory`. It binds an R2DBC `Connection` from the specified
+`ConnectionFactory` to the subscriber `Context`, potentially allowing for one subscriber
+`Connection` for each `ConnectionFactory`.

-Application code is required to retrieve the R2DBC connection through
+Application code is required to retrieve the R2DBC `Connection` through
 `ConnectionFactoryUtils.getConnection(ConnectionFactory)`, instead of R2DBC's standard
-`ConnectionFactory.create()`.
-
-All framework classes (such as `DatabaseClient`) use this strategy implicitly.
-If not used with this transaction manager, the lookup strategy behaves exactly like the common one.
-Thus, it can be used in any case.
-
-The `R2dbcTransactionManager` class supports custom isolation levels that get applied to the connection.
+`ConnectionFactory.create()`. All framework classes (such as `DatabaseClient`) use this
+strategy implicitly. If not used with a transaction manager, the lookup strategy behaves
+exactly like `ConnectionFactory.create()` and can therefore be used in any case.



@@ -12,19 +12,16 @@ management that delivers the following benefits:
  than complex transaction APIs, such as JTA.
 * Excellent integration with Spring's data access abstractions.

-The following sections describe the Spring Framework's transaction features and
-technologies:
+The following sections describe the Spring Framework's transaction features and technologies:

-* xref:data-access/transaction/motivation.adoc[Advantages of the Spring Framework's transaction support   model]
- describes why you would use the Spring Framework's transaction abstraction
-  instead of EJB Container-Managed Transactions (CMT) or choosing to drive local
-  transactions through a proprietary API, such as Hibernate.
+* xref:data-access/transaction/motivation.adoc[Advantages of the Spring Framework's transaction support model]
+  describes why you would use the Spring Framework's transaction abstraction instead of EJB
+  Container-Managed Transactions (CMT) or choosing to drive transactions through a proprietary API.
 * xref:data-access/transaction/strategies.adoc[Understanding the Spring Framework transaction abstraction]
-  outlines the core classes and describes how to configure and obtain `DataSource`
-  instances from a variety of sources.
-* xref:data-access/transaction/tx-resource-synchronization.adoc[Synchronizing resources with transactions] describes
-  how the application code ensures that resources are created, reused, and cleaned up
-  properly.
+  outlines the core classes and describes how to configure and obtain `DataSource` instances
+  from a variety of sources.
+* xref:data-access/transaction/tx-resource-synchronization.adoc[Synchronizing resources with transactions]
+  describes how the application code ensures that resources are created, reused, and cleaned up properly.
 * xref:data-access/transaction/declarative.adoc[Declarative transaction management] describes support for
  declarative transaction management.
 * xref:data-access/transaction/programmatic.adoc[Programmatic transaction management] covers support for
@@ -13,39 +13,7 @@ javadoc for details.
 Spring's `JtaTransactionManager` is the standard choice to run on Jakarta EE application
 servers and is known to work on all common servers. Advanced functionality, such as
 transaction suspension, works on many servers as well (including GlassFish, JBoss and
-Geronimo) without any special configuration required. However, for fully supported
-transaction suspension and further advanced integration, Spring includes special adapters
-for WebLogic Server and WebSphere. These adapters are discussed in the following
-sections.
-
-For standard scenarios, including WebLogic Server and WebSphere, consider using the
-convenient `<tx:jta-transaction-manager/>` configuration element. When configured,
-this element automatically detects the underlying server and chooses the best
-transaction manager available for the platform. This means that you need not explicitly
-configure server-specific adapter classes (as discussed in the following sections).
-Rather, they are chosen automatically, with the standard
-`JtaTransactionManager` as the default fallback.
-
-
-[[transaction-application-server-integration-websphere]]
-== IBM WebSphere
-
-On WebSphere 6.1.0.9 and above, the recommended Spring JTA transaction manager to use is
-`WebSphereUowTransactionManager`. This special adapter uses IBM's `UOWManager` API,
-which is available in WebSphere Application Server 6.1.0.9 and later. With this adapter,
-Spring-driven transaction suspension (suspend and resume as initiated by
-`PROPAGATION_REQUIRES_NEW`) is officially supported by IBM.
-
-
-[[transaction-application-server-integration-weblogic]]
-== Oracle WebLogic Server
-
-On WebLogic Server 9.0 or above, you would typically use the
-`WebLogicJtaTransactionManager` instead of the stock `JtaTransactionManager` class. This
-special WebLogic-specific subclass of the normal `JtaTransactionManager` supports the
-full power of Spring's transaction definitions in a WebLogic-managed transaction
-environment, beyond standard JTA semantics. Features include transaction names,
-per-transaction isolation levels, and proper resuming of transactions in all cases.
+Geronimo) without any special configuration required.



@@ -76,7 +76,7 @@ Kotlin::

 Used at the class level as above, the annotation indicates a default for all methods of
 the declaring class (as well as its subclasses). Alternatively, each method can be
-annotated individually. See xref:data-access/transaction/declarative/annotations.adoc#transaction-declarative-annotations-method-visibility[null] for
+annotated individually. See xref:data-access/transaction/declarative/annotations.adoc#transaction-declarative-annotations-method-visibility[method visibility] for
 further details on which methods Spring considers transactional. Note that a class-level
 annotation does not apply to ancestor classes up the class hierarchy; in such a scenario,
 inherited methods need to be locally redeclared in order to participate in a
@@ -124,7 +124,6 @@ In XML configuration, the `<tx:annotation-driven/>` tag provides similar conveni
 ----
 <1> The line that makes the bean instance transactional.

-
 TIP: You can omit the `transaction-manager` attribute in the `<tx:annotation-driven/>`
 tag if the bean name of the `TransactionManager` that you want to wire in has the name
 `transactionManager`. If the `TransactionManager` bean that you want to dependency-inject
@@ -194,74 +193,63 @@ Kotlin::
 ======

 Note that there are special considerations for the returned `Publisher` with regards to
-Reactive Streams cancellation signals. See the xref:data-access/transaction/programmatic.adoc#tx-prog-operator-cancel[Cancel Signals] section under
-"Using the TransactionalOperator" for more details.
-
+Reactive Streams cancellation signals. See the
+xref:data-access/transaction/programmatic.adoc#tx-prog-operator-cancel[Cancel Signals]
+section under "Using the TransactionalOperator" for more details.

 [[transaction-declarative-annotations-method-visibility]]
-.Method visibility and `@Transactional`
+.Method visibility and `@Transactional` in proxy mode
 [NOTE]
 ====
-When you use transactional proxies with Spring's standard configuration, you should apply
-the `@Transactional` annotation only to methods with `public` visibility. If you do
-annotate `protected`, `private`, or package-visible methods with the `@Transactional`
-annotation, no error is raised, but the annotated method does not exhibit the configured
-transactional settings. If you need to annotate non-public methods, consider the tip in
-the following paragraph for class-based proxies or consider using AspectJ compile-time or
-load-time weaving (described later).
+The `@Transactional` annotation is typically used on methods with `public` visibility.
+As of 6.0, `protected` or package-visible methods can also be made transactional for
+class-based proxies by default. Note that transactional methods in interface-based
+proxies must always be `public` and defined in the proxied interface. For both kinds
+of proxies, only external method calls coming in through the proxy are intercepted.

-When using `@EnableTransactionManagement` in a `@Configuration` class, `protected` or
-package-visible methods can also be made transactional for class-based proxies by
-registering a custom `transactionAttributeSource` bean like in the following example.
-Note, however, that transactional methods in interface-based proxies must always be
-`public` and defined in the proxied interface.
+If you prefer consistent treatment of method visibility across the different kinds of
+proxies (which was the default up until 5.3), consider specifying `publicMethodsOnly`:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	/**
 	 * Register a custom AnnotationTransactionAttributeSource with the
-	 * publicMethodsOnly flag set to false to enable support for
-	 * protected and package-private @Transactional methods in
-	 * class-based proxies.
-	 *
+	 * publicMethodsOnly flag set to true to consistently ignore non-public methods.
 	 * @see ProxyTransactionManagementConfiguration#transactionAttributeSource()
 	 */
 	@Bean
 	TransactionAttributeSource transactionAttributeSource() {
-		return new AnnotationTransactionAttributeSource(false);
+		return new AnnotationTransactionAttributeSource(true);
 	}
 ----

-The _Spring TestContext Framework_ supports non-private `@Transactional` test methods by
-default. See xref:testing/testcontext-framework/tx.adoc[Transaction Management] in the testing
-chapter for examples.
+The _Spring TestContext Framework_ supports non-private `@Transactional` test methods
+by default as well. See xref:testing/testcontext-framework/tx.adoc[Transaction Management]
+in the testing chapter for examples.
 ====

 You can apply the `@Transactional` annotation to an interface definition, a method
-on an interface, a class definition, or a method on a class. However, the
-mere presence of the `@Transactional` annotation is not enough to activate the
-transactional behavior. The `@Transactional` annotation is merely metadata that can
-be consumed by some runtime infrastructure that is `@Transactional`-aware and that
-can use the metadata to configure the appropriate beans with transactional behavior.
-In the preceding example, the `<tx:annotation-driven/>` element switches on the
-transactional behavior.
+on an interface, a class definition, or a method on a class. However, the mere presence
+of the `@Transactional` annotation is not enough to activate the transactional behavior.
+The `@Transactional` annotation is merely metadata that can be consumed by corresponding
+runtime infrastructure which uses that metadata to configure the appropriate beans with
+transactional behavior. In the preceding example, the `<tx:annotation-driven/>` element
+switches on actual transaction management at runtime.

-TIP: The Spring team recommends that you annotate only concrete classes (and methods of
-concrete classes) with the `@Transactional` annotation, as opposed to annotating interfaces.
-You certainly can place the `@Transactional` annotation on an interface (or an interface
-method), but this works only as you would expect it to if you use interface-based
-proxies. The fact that Java annotations are not inherited from interfaces means that,
-if you use class-based proxies (`proxy-target-class="true"`) or the weaving-based
-aspect (`mode="aspectj"`), the transaction settings are not recognized by the proxying
-and weaving infrastructure, and the object is not wrapped in a transactional proxy.
+TIP: The Spring team recommends that you annotate methods of concrete classes with the
+`@Transactional` annotation, rather than relying on annotated methods in interfaces,
+even if the latter does work for interface-based and target-class proxies as of 5.0.
+Since Java annotations are not inherited from interfaces, interface-declared annotations
+are still not recognized by the weaving infrastructure when using AspectJ mode, so the
+aspect does not get applied. As a consequence, your transaction annotations may be
+silently ignored: Your code might appear to "work" until you test a rollback scenario.

 NOTE: In proxy mode (which is the default), only external method calls coming in through
 the proxy are intercepted. This means that self-invocation (in effect, a method within
 the target object calling another method of the target object) does not lead to an actual
 transaction at runtime even if the invoked method is marked with `@Transactional`. Also,
 the proxy must be fully initialized to provide the expected behavior, so you should not
-rely on this feature in your initialization code -- for example, in a `@PostConstruct`
-method.
+rely on this feature in your initialization code -- e.g. in a `@PostConstruct` method.

 Consider using AspectJ mode (see the `mode` attribute in the following table) if you
 expect self-invocations to be wrapped with transactions as well. In this case, there is
@@ -286,20 +274,20 @@ is modified) to support `@Transactional` runtime behavior on any kind of method.
  framework (following proxy semantics, as discussed earlier, applying to method calls
  coming in through the proxy only). The alternative mode (`aspectj`) instead weaves the
  affected classes with Spring's AspectJ transaction aspect, modifying the target class
-  byte code to apply to any kind of method call. AspectJ weaving requires
-  `spring-aspects.jar` in the classpath as well as having load-time weaving (or compile-time
-  weaving) enabled. (See xref:core/aop/using-aspectj.adoc#aop-aj-ltw-spring[Spring configuration]
-  for details on how to set up load-time weaving.)
+  byte code to apply to any kind of method call. AspectJ weaving requires `spring-aspects.jar`
+  in the classpath as well as having load-time weaving (or compile-time weaving) enabled.
+  (See xref:core/aop/using-aspectj.adoc#aop-aj-ltw-spring[Spring configuration] for details
+  on how to set up load-time weaving.)

 | `proxy-target-class`
 | `proxyTargetClass`
 | `false`
 | Applies to `proxy` mode only. Controls what type of transactional proxies are created
-  for classes annotated with the `@Transactional` annotation. If the
-  `proxy-target-class` attribute is set to `true`, class-based proxies are created.
-  If `proxy-target-class` is `false` or if the attribute is omitted, then standard JDK
-  interface-based proxies are created. (See xref:core/aop/proxying.adoc[Proxying Mechanisms]
-  for a detailed examination of the different proxy types.)
+  for classes annotated with the `@Transactional` annotation. If the `proxy-target-class`
+  attribute is set to `true`, class-based proxies are created. If `proxy-target-class` is
+  `false` or if the attribute is omitted, then standard JDK interface-based proxies are
+  created. (See xref:core/aop/proxying.adoc[Proxying Mechanisms] for a detailed examination
+  of the different proxy types.)

 | `order`
 | `order`
@@ -375,7 +363,6 @@ Kotlin::
 ----
 ======

-
 [[transaction-declarative-attransactional-settings]]
 == `@Transactional` Settings

@@ -454,10 +441,9 @@ on rollback rule semantics, patterns, and warnings regarding possible unintentio
 matches for pattern-based rollback rules.

 Currently, you cannot have explicit control over the name of a transaction, where 'name'
-means the transaction name that appears in a transaction monitor, if applicable
-(for example, WebLogic's transaction monitor), and in logging output. For declarative
-transactions, the transaction name is always the fully-qualified class name + `.`
-+ the method name of the transactionally advised class. For example, if the
+means the transaction name that appears in a transaction monitor and in logging output.
+For declarative transactions, the transaction name is always the fully-qualified class
+name + `.` + the method name of the transactionally advised class. For example, if the
 `handlePayment(..)` method of the `BusinessService` class started a transaction, the
 name of the transaction would be: `com.example.BusinessService.handlePayment`.

@@ -522,17 +508,17 @@ The following listing shows the bean declarations:
 ----
 	<tx:annotation-driven/>

-		<bean id="transactionManager1" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
+		<bean id="transactionManager1" class="org.springframework.jdbc.support.JdbcTransactionManager">
 			...
 			<qualifier value="order"/>
 		</bean>

-		<bean id="transactionManager2" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
+		<bean id="transactionManager2" class="org.springframework.jdbc.support.JdbcTransactionManager">
 			...
 			<qualifier value="account"/>
 		</bean>

-		<bean id="transactionManager3" class="org.springframework.data.r2dbc.connectionfactory.R2dbcTransactionManager">
+		<bean id="transactionManager3" class="org.springframework.data.r2dbc.connection.R2dbcTransactionManager">
 			...
 			<qualifier value="reactive-account"/>
 		</bean>
@@ -59,6 +59,14 @@ status and with an inner transaction's locks released immediately after its comp
 Such an independent inner transaction can also declare its own isolation level, timeout,
 and read-only settings and not inherit an outer transaction's characteristics.

+NOTE: The resources attached to the outer transaction will remain bound there while
+the inner transaction acquires its own resources such as a new database connection.
+This may lead to exhaustion of the connection pool and potentially to a deadlock if
+several threads have an active outer transaction and wait to acquire a new connection
+for their inner transaction, with the pool not being able to hand out any such inner
+connection anymore. Do not use `PROPAGATION_REQUIRES_NEW` unless your connection pool
+is appropriately sized, exceeding the number of concurrent threads by at least 1.
+
 [[tx-propagation-nested]]
 == Understanding `PROPAGATION_NESTED`

@@ -98,9 +98,9 @@ through its `key` attribute. You can use xref:core/expressions.adoc[SpEL] to pic
 arguments of interest (or their nested properties), perform operations, or even
 invoke arbitrary methods without having to write any code or implement any interface.
 This is the recommended approach over the
-xref:integration/cache/annotations.adoc#cache-annotations-cacheable-default-key[default generator], since methods tend to be
-quite different in signatures as the code base grows. While the default strategy might
-work for some methods, it rarely works for all methods.
+xref:integration/cache/annotations.adoc#cache-annotations-cacheable-default-key[default generator],
+since methods tend to be quite different in signatures as the code base grows. While the
+default strategy might work for some methods, it rarely works for all methods.

 The following examples use various SpEL declarations (if you are not familiar with SpEL,
 do yourself a favor and read xref:core/expressions.adoc[Spring Expression Language]):
@@ -137,9 +137,8 @@ that specifies both results in an exception.
 [[cache-annotations-cacheable-default-cache-resolver]]
 === Default Cache Resolution

-The caching abstraction uses a simple `CacheResolver` that
-retrieves the caches defined at the operation level by using the configured
-`CacheManager`.
+The caching abstraction uses a simple `CacheResolver` that retrieves the caches
+defined at the operation level by using the configured `CacheManager`.

 To provide a different default cache resolver, you need to implement the
 `org.springframework.cache.interceptor.CacheResolver` interface.
@@ -160,12 +159,11 @@ For applications that work with several cache managers, you can set the
 ----
 <1> Specifying `anotherCacheManager`.

-
 You can also replace the `CacheResolver` entirely in a fashion similar to that of
-replacing xref:integration/cache/annotations.adoc#cache-annotations-cacheable-key[key generation]. The resolution is
-requested for every cache operation, letting the implementation actually resolve
-the caches to use based on runtime arguments. The following example shows how to
-specify a `CacheResolver`:
+replacing xref:integration/cache/annotations.adoc#cache-annotations-cacheable-key[key generation].
+The resolution is requested for every cache operation, letting the implementation
+actually resolve the caches to use based on runtime arguments. The following example
+shows how to specify a `CacheResolver`:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -174,7 +172,6 @@ specify a `CacheResolver`:
 ----
 <1> Specifying the `CacheResolver`.

-
 [NOTE]
 ====
 Since Spring 4.1, the `value` attribute of the cache annotations are no longer
@@ -229,7 +226,6 @@ argument `name` has a length shorter than 32:
 ----
 <1> Setting a condition on `@Cacheable`.

-
 In addition to the `condition` parameter, you can use the `unless` parameter to veto the
 adding of a value to the cache. Unlike `condition`, `unless` expressions are evaluated
 after the method has been invoked. To expand on the previous example, perhaps we only
@@ -242,7 +238,6 @@ want to cache paperback books, as the following example does:
 ----
 <1> Using the `unless` attribute to block hardbacks.

-
 The cache abstraction supports `java.util.Optional` return types. If an `Optional` value
 is _present_, it will be stored in the associated cache. If an `Optional` value is not
 present, `null` will be stored in the associated cache. `#result` always refers to the
@@ -344,7 +339,7 @@ confirm the exclusion.


 [[cache-annotations-evict]]
-== The `@CacheEvict` annotation
+== The `@CacheEvict` Annotation

 The cache abstraction allows not just population of a cache store but also eviction.
 This process is useful for removing stale or unused data from the cache. As opposed to
@@ -402,7 +397,7 @@ The following example uses two `@CacheEvict` annotations:


 [[cache-annotations-config]]
-== The `@CacheConfig` annotation
+== The `@CacheConfig` Annotation

 So far, we have seen that caching operations offer many customization options and that
 you can set these options for each operation. However, some of the customization options
@@ -429,10 +424,13 @@ Placing this annotation on the class does not turn on any caching operation.
 An operation-level customization always overrides a customization set on `@CacheConfig`.
 Therefore, this gives three levels of customizations for each cache operation:

-* Globally configured, available for `CacheManager`, `KeyGenerator`.
+* Globally configured, e.g. through `CachingConfigurer`: see next section.
 * At the class level, using `@CacheConfig`.
 * At the operation level.

+NOTE: Provider-specific settings are typically available on the `CacheManager` bean,
+e.g. on `CaffeineCacheManager`. These are effectively also global.
+

 [[cache-annotation-enable]]
 == Enabling Caching Annotations
@@ -451,6 +449,13 @@ To enable caching annotations add the annotation `@EnableCaching` to one of your
 	@Configuration
 	@EnableCaching
 	public class AppConfig {
+
+		@Bean
+		CacheManager cacheManager() {
+			CaffeineCacheManager cacheManager = new CaffeineCacheManager();
+			cacheManager.setCacheSpecification(...);
+			return cacheManager;
+		}
 	}
 ----

@@ -465,7 +470,11 @@ Alternatively, for XML configuration you can use the `cache:annotation-driven` e
 			http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
 			http://www.springframework.org/schema/cache https://www.springframework.org/schema/cache/spring-cache.xsd">

-			<cache:annotation-driven/>
+		<cache:annotation-driven/>
+
+		<bean id="cacheManager" class="org.springframework.cache.caffeine.CaffeineCacheManager">
+			<property name="cacheSpecification" value="..."/>
+		</bean>
 	</beans>
 ----

@@ -85,7 +85,7 @@ email when someone places an order:

 			// Call the collaborators to persist the order...

-			// Create a thread safe "copy" of the template message and customize it
+			// Create a thread-safe "copy" of the template message and customize it
 			SimpleMailMessage msg = new SimpleMailMessage(this.templateMessage);
 			msg.setTo(order.getCustomer().getEmailAddress());
 			msg.setText(
@@ -56,14 +56,13 @@ locally, as the following example shows:
 ----

 The specified `WorkManager` can also point to an environment-specific thread pool --
-typically through a `SimpleTaskWorkManager` instance's `asyncTaskExecutor` property. Consider
-defining a shared thread pool for all your `ResourceAdapter` instances if you happen to
-use multiple adapters.
+typically through a `SimpleTaskWorkManager` instance's `asyncTaskExecutor` property.
+Consider defining a shared thread pool for all your `ResourceAdapter` instances
+if you happen to use multiple adapters.

-In some environments (such as WebLogic 9 or above), you can instead obtain the entire `ResourceAdapter` object
-from JNDI (by using `<jee:jndi-lookup>`). The Spring-based message
-listeners can then interact with the server-hosted `ResourceAdapter`, which also use the
-server's built-in `WorkManager`.
+In some environments, you can instead obtain the entire `ResourceAdapter` object from JNDI
+(by using `<jee:jndi-lookup>`). The Spring-based message listeners can then interact with
+the server-hosted `ResourceAdapter`, which also use the server's built-in `WorkManager`.

 See the javadoc for {api-spring-framework}/jms/listener/endpoint/JmsMessageEndpointManager.html[`JmsMessageEndpointManager`],
 {api-spring-framework}/jms/listener/endpoint/JmsActivationSpecConfig.html[`JmsActivationSpecConfig`],
@@ -183,18 +183,21 @@ as the following example shows:

 If you configure a bean with an `MBeanExporter` that is also configured for lazy
 initialization, the `MBeanExporter` does not break this contract and avoids
-instantiating the bean. Instead, it registers a proxy with the `MBeanServer` and
-defers obtaining the bean from the container until the first invocation on the proxy
-occurs.
+instantiating the bean. Instead, it registers a proxy with the `MBeanServer` and defers
+obtaining the bean from the container until the first invocation on the proxy occurs.
+
+This also affects `FactoryBean` resolution where `MBeanExporter` will regularly
+introspect the produced object, effectively triggering `FactoryBean.getObject()`.
+In order to avoid this, mark the corresponding bean definition as lazy-init.


 [[jmx-exporting-auto]]
 == Automatic Registration of MBeans

-Any beans that are exported through the `MBeanExporter` and are already valid MBeans are
-registered as-is with the `MBeanServer` without further intervention from Spring. You can cause MBeans
-to be automatically detected by the `MBeanExporter` by setting the `autodetect`
-property to `true`, as the following example shows:
+Any beans that are exported through the `MBeanExporter` and are already valid MBeans
+are registered as-is with the `MBeanServer` without further intervention from Spring.
+You can cause MBeans to be automatically detected by the `MBeanExporter` by setting
+the `autodetect` property to `true`, as the following example shows:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
@@ -2,8 +2,8 @@
 = Observability Support

 Micrometer defines an https://micrometer.io/docs/observation[Observation concept that enables both Metrics and Traces] in applications.
-Metrics support offers a way to create timers, gauges or counters for collecting statistics about the runtime behavior of your application.
-Metrics can help you to track error rates, usage patterns, performance and more.
+Metrics support offers a way to create timers, gauges, or counters for collecting statistics about the runtime behavior of your application.
+Metrics can help you to track error rates, usage patterns, performance, and more.
 Traces provide a holistic view of an entire system, crossing application boundaries; you can zoom in on particular user requests and follow their entire completion across applications.

 Spring Framework instruments various parts of its own codebase to publish observations if an `ObservationRegistry` is configured.
@@ -36,16 +36,16 @@ https://micrometer.io/docs/concepts#_naming_meters[to the format preferred by th
 [[observability.concepts]]
 == Micrometer Observation concepts

-If you are not familiar with Micrometer Observation, here's a quick summary of the new concepts you should know about.
+If you are not familiar with Micrometer Observation, here's a quick summary of the concepts you should know about.

 * `Observation` is the actual recording of something happening in your application. This is processed by `ObservationHandler` implementations to produce metrics or traces.
 * Each observation has a corresponding `ObservationContext` implementation; this type holds all the relevant information for extracting metadata for it.
-  In the case of an HTTP server observation, the context implementation could hold the HTTP request, the HTTP response, any Exception thrown during processing...
-* Each `Observation` holds `KeyValues` metadata. In the case of a server HTTP observation, this could be the HTTP request method, the HTTP response status...
+  In the case of an HTTP server observation, the context implementation could hold the HTTP request, the HTTP response, any exception thrown during processing, and so forth.
+* Each `Observation` holds `KeyValues` metadata. In the case of an HTTP server observation, this could be the HTTP request method, the HTTP response status, and so forth.
  This metadata is contributed by `ObservationConvention` implementations which should declare the type of `ObservationContext` they support.
 * `KeyValues` are said to be "low cardinality" if there is a low, bounded number of possible values for the `KeyValue` tuple (HTTP method is a good example).
  Low cardinality values are contributed to metrics only.
-  High cardinality values are on the other hand unbounded (for example, HTTP request URIs) and are only contributed to Traces.
+  Conversely, "high cardinality" values are unbounded (for example, HTTP request URIs) and are only contributed to traces.
 * An `ObservationDocumentation` documents all observations in a particular domain, listing the expected key names and their meaning.


@@ -63,16 +63,16 @@ Each instrumented component will provide two extension points:
 === Using custom Observation conventions

 Let's take the example of the Spring MVC "http.server.requests" metrics instrumentation with the `ServerHttpObservationFilter`.
-This observation is using a `ServerRequestObservationConvention` with a `ServerRequestObservationContext`; custom conventions can be configured on the Servlet filter.
+This observation uses a `ServerRequestObservationConvention` with a `ServerRequestObservationContext`; custom conventions can be configured on the Servlet filter.
 If you would like to customize the metadata produced with the observation, you can extend the `DefaultServerRequestObservationConvention` for your requirements:

 include-code::./ExtendedServerRequestObservationConvention[]

-If you want full control, you can then implement the entire convention contract for the observation you're interested in:
+If you want full control, you can implement the entire convention contract for the observation you're interested in:

 include-code::./CustomServerRequestObservationConvention[]

-You can also achieve similar goals using a custom `ObservationFilter` - adding or removing key values for an observation.
+You can also achieve similar goals using a custom `ObservationFilter` – adding or removing key values for an observation.
 Filters do not replace the default convention and are used as a post-processing component.

 include-code::./ServerRequestObservationFilter[]
@@ -83,20 +83,24 @@ You can configure `ObservationFilter` instances on the `ObservationRegistry`.
 [[observability.http-server]]
 == HTTP Server instrumentation

-HTTP server exchanges observations are created with the name `"http.server.requests"` for Servlet and Reactive applications.
+HTTP server exchange observations are created with the name `"http.server.requests"` for Servlet and Reactive applications.

 [[observability.http-server.servlet]]
 === Servlet applications

 Applications need to configure the `org.springframework.web.filter.ServerHttpObservationFilter` Servlet filter in their application.
-It is using the `org.springframework.http.server.observation.DefaultServerRequestObservationConvention` by default, backed by the `ServerRequestObservationContext`.
+It uses the `org.springframework.http.server.observation.DefaultServerRequestObservationConvention` by default, backed by the `ServerRequestObservationContext`.

-This will only record an observation as an error if the `Exception` has not been handled by the web Framework and has bubbled up to the Servlet filter.
+This will only record an observation as an error if the `Exception` has not been handled by the web framework and has bubbled up to the Servlet filter.
 Typically, all exceptions handled by Spring MVC's `@ExceptionHandler` and xref:web/webmvc/mvc-ann-rest-exceptions.adoc[`ProblemDetail` support] will not be recorded with the observation.
 You can, at any point during request processing, set the error field on the `ObservationContext` yourself:

 include-code::./UserController[]

+NOTE: Because the instrumentation is done at the Servlet Filter level, the observation scope only covers the filters ordered after this one as well as the handling of the request.
+Typically, Servlet container error handling is performed at a lower level and won't have any active observation or span.
+For this use case, a container-specific implementation is required, such as a `org.apache.catalina.Valve` for Tomcat; this is outside of the scope of this project.
+
 By default, the following `KeyValues` are created:

 .Low cardinality Keys
@@ -104,7 +108,7 @@ By default, the following `KeyValues` are created:
 |===
 |Name | Description
 |`exception` _(required)_|Name of the exception thrown during the exchange, or `KeyValue#NONE_VALUE`} if no exception happened.
-|`method` _(required)_|Name of HTTP request method or `"none"` if the request was not received properly.
+|`method` _(required)_|Name of HTTP request method or `"none"` if not a well-known method.
 |`outcome` _(required)_|Outcome of the HTTP server exchange.
 |`status` _(required)_|HTTP response raw status code, or `"UNKNOWN"` if no response was created.
 |`uri` _(required)_|URI pattern for the matching handler if available, falling back to `REDIRECTION` for 3xx responses, `NOT_FOUND` for 404 responses, `root` for requests with no path info, and `UNKNOWN` for all other requests.
@@ -122,9 +126,9 @@ By default, the following `KeyValues` are created:
 === Reactive applications

 Applications need to configure the `org.springframework.web.filter.reactive.ServerHttpObservationFilter` reactive `WebFilter` in their application.
-It is using the `org.springframework.http.server.reactive.observation.DefaultServerRequestObservationConvention` by default, backed by the `ServerRequestObservationContext`.
+It uses the `org.springframework.http.server.reactive.observation.DefaultServerRequestObservationConvention` by default, backed by the `ServerRequestObservationContext`.

-This will only record an observation as an error if the `Exception` has not been handled by the web Framework and has bubbled up to the `WebFilter`.
+This will only record an observation as an error if the `Exception` has not been handled by the web framework and has bubbled up to the `WebFilter`.
 Typically, all exceptions handled by Spring WebFlux's `@ExceptionHandler` and xref:web/webflux/ann-rest-exceptions.adoc[`ProblemDetail` support] will not be recorded with the observation.
 You can, at any point during request processing, set the error field on the `ObservationContext` yourself:

@@ -137,7 +141,7 @@ By default, the following `KeyValues` are created:
 |===
 |Name | Description
 |`exception` _(required)_|Name of the exception thrown during the exchange, or `"none"` if no exception happened.
-|`method` _(required)_|Name of HTTP request method or `"none"` if the request was not received properly.
+|`method` _(required)_|Name of HTTP request method or `"none"` if not a well-known method.
 |`outcome` _(required)_|Outcome of the HTTP server exchange.
 |`status` _(required)_|HTTP response raw status code, or `"UNKNOWN"` if no response was created.
 |`uri` _(required)_|URI pattern for the matching handler if available, falling back to `REDIRECTION` for 3xx responses, `NOT_FOUND` for 404 responses, `root` for requests with no path info, and `UNKNOWN` for all other requests.
@@ -153,9 +157,9 @@ By default, the following `KeyValues` are created:


 [[observability.http-client]]
-== HTTP Client instrumentation
+== HTTP Client Instrumentation

-HTTP client exchanges observations are created with the name `"http.client.requests"` for blocking and reactive clients.
+HTTP client exchange observations are created with the name `"http.client.requests"` for blocking and reactive clients.
 Unlike their server counterparts, the instrumentation is implemented directly in the client so the only required step is to configure an `ObservationRegistry` on the client.

 [[observability.http-client.resttemplate]]
@@ -164,13 +168,13 @@ Unlike their server counterparts, the instrumentation is implemented directly in
 Applications must configure an `ObservationRegistry` on `RestTemplate` instances to enable the instrumentation; without that, observations are "no-ops".
 Spring Boot will auto-configure `RestTemplateBuilder` beans with the observation registry already set.

-Instrumentation is using the `org.springframework.http.client.observation.ClientRequestObservationConvention` by default, backed by the `ClientRequestObservationContext`.
+Instrumentation uses the `org.springframework.http.client.observation.ClientRequestObservationConvention` by default, backed by the `ClientRequestObservationContext`.

 .Low cardinality Keys
 [cols="a,a"]
 |===
 |Name | Description
-|`method` _(required)_|Name of HTTP request method or `"none"` if the request could not be created.
+|`method` _(required)_|Name of HTTP request method or `"none"` if not a well-known method.
 |`uri` _(required)_|URI template used for HTTP request, or `"none"` if none was provided. Only the path part of the URI is considered.
 |`client.name` _(required)_|Client name derived from the request URI host.
 |`status` _(required)_|HTTP response raw status code, or `"IO_ERROR"` in case of `IOException`, or `"CLIENT_ERROR"` if no response was received.
@@ -193,13 +197,13 @@ Instrumentation is using the `org.springframework.http.client.observation.Client
 Applications must configure an `ObservationRegistry` on the `WebClient` builder to enable the instrumentation; without that, observations are "no-ops".
 Spring Boot will auto-configure `WebClient.Builder` beans with the observation registry already set.

-Instrumentation is using the `org.springframework.web.reactive.function.client.ClientRequestObservationConvention` by default, backed by the `ClientRequestObservationContext`.
+Instrumentation uses the `org.springframework.web.reactive.function.client.ClientRequestObservationConvention` by default, backed by the `ClientRequestObservationContext`.

 .Low cardinality Keys
 [cols="a,a"]
 |===
 |Name | Description
-|`method` _(required)_|Name of HTTP request method or `"none"` if the request could not be created.
+|`method` _(required)_|Name of HTTP request method or `"none"` if not a well-known method.
 |`uri` _(required)_|URI template used for HTTP request, or `"none"` if none was provided. Only the path part of the URI is considered.
 |`client.name` _(required)_|Client name derived from the request URI host.
 |`status` _(required)_|HTTP response raw status code, or `"IO_ERROR"` in case of `IOException`, or `"CLIENT_ERROR"` if no response was received.
@@ -97,11 +97,7 @@ preparation and response extraction through callback interfaces.

 The default constructor uses `java.net.HttpURLConnection` to perform requests. You can
 switch to a different HTTP library with an implementation of `ClientHttpRequestFactory`.
-There is built-in support for the following:
-
-* Apache HttpComponents
-* Netty
-* OkHttp
+Currently, there is also built-in support for Apache HttpComponents and OkHttp.

 For example, to switch to Apache HttpComponents, you can use the following:

@@ -5,16 +5,11 @@ The Spring Framework provides abstractions for the asynchronous execution and sc
 tasks with the `TaskExecutor` and `TaskScheduler` interfaces, respectively. Spring also
 features implementations of those interfaces that support thread pools or delegation to
 CommonJ within an application server environment. Ultimately, the use of these
-implementations behind the common interfaces abstracts away the differences between Java
-SE 5, Java SE 6, and Jakarta EE environments.
+implementations behind the common interfaces abstracts away the differences between
+Java SE and Jakarta EE environments.

-Spring also features integration classes to support scheduling with the `Timer`
-(part of the JDK since 1.3) and the https://www.quartz-scheduler.org/[Quartz Scheduler].
-You can set up both of those schedulers by using a `FactoryBean` with optional references to
-`Timer` or `Trigger` instances, respectively. Furthermore, a convenience class for both
-the Quartz Scheduler and the `Timer` is available that lets you invoke a method of
-an existing target object (analogous to the normal `MethodInvokingFactoryBean`
-operation).
+Spring also features integration classes to support scheduling with the
+https://www.quartz-scheduler.org/[Quartz Scheduler].



@@ -62,10 +57,10 @@ The variants that Spring provides are as follows:
  `ConcurrentTaskExecutor` directly. However, if the `ThreadPoolTaskExecutor` is not
  flexible enough for your needs, `ConcurrentTaskExecutor` is an alternative.
 * `ThreadPoolTaskExecutor`:
-  This implementation is most commonly used. It exposes bean properties for
-  configuring a `java.util.concurrent.ThreadPoolExecutor` and wraps it in a `TaskExecutor`.
-  If you need to adapt to a different kind of `java.util.concurrent.Executor`, we
-  recommend that you use a `ConcurrentTaskExecutor` instead.
+  This implementation is most commonly used. It exposes bean properties for configuring
+  a `java.util.concurrent.ThreadPoolExecutor` and wraps it in a `TaskExecutor`.
+  If you need to adapt to a different kind of `java.util.concurrent.Executor`,
+  we recommend that you use a `ConcurrentTaskExecutor` instead.
 * `DefaultManagedTaskExecutor`:
  This implementation uses a JNDI-obtained `ManagedExecutorService` in a JSR-236
  compatible runtime environment (such as a Jakarta EE application server),
@@ -75,9 +70,9 @@ The variants that Spring provides are as follows:
 [[scheduling-task-executor-usage]]
 === Using a `TaskExecutor`

-Spring's `TaskExecutor` implementations are used as simple JavaBeans. In the following example,
-we define a bean that uses the `ThreadPoolTaskExecutor` to asynchronously print
-out a set of messages:
+Spring's `TaskExecutor` implementations are commonly used with dependency injection.
+In the following example, we define a bean that uses the `ThreadPoolTaskExecutor`
+to asynchronously print out a set of messages:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -227,8 +222,8 @@ fixed delay, those methods should be used directly whenever possible. The value
 `PeriodicTrigger` implementation is that you can use it within components that rely on
 the `Trigger` abstraction. For example, it may be convenient to allow periodic triggers,
 cron-based triggers, and even custom trigger implementations to be used interchangeably.
-Such a component could take advantage of dependency injection so that you can configure such `Triggers`
-externally and, therefore, easily modify or extend them.
+Such a component could take advantage of dependency injection so that you can configure
+such `Triggers` externally and, therefore, easily modify or extend them.


 [[scheduling-task-scheduler-implementations]]
@@ -238,10 +233,8 @@ As with Spring's `TaskExecutor` abstraction, the primary benefit of the `TaskSch
 arrangement is that an application's scheduling needs are decoupled from the deployment
 environment. This abstraction level is particularly relevant when deploying to an
 application server environment where threads should not be created directly by the
-application itself. For such scenarios, Spring provides a `TimerManagerTaskScheduler`
-that delegates to a CommonJ `TimerManager` on WebLogic or WebSphere as well as a more recent
-`DefaultManagedTaskScheduler` that delegates to a JSR-236 `ManagedScheduledExecutorService`
-in a Jakarta EE environment. Both are typically configured with a JNDI lookup.
+application itself. For such scenarios, Spring provides a `DefaultManagedTaskScheduler`
+that delegates to a JSR-236 `ManagedScheduledExecutorService` in a Jakarta EE environment.

 Whenever external thread management is not a requirement, a simpler alternative is
 a local `ScheduledExecutorService` setup within the application, which can be adapted
@@ -263,8 +256,8 @@ execution.
 [[scheduling-enable-annotation-support]]
 === Enable Scheduling Annotations

-To enable support for `@Scheduled` and `@Async` annotations, you can add `@EnableScheduling` and
-`@EnableAsync` to one of your `@Configuration` classes, as the following example shows:
+To enable support for `@Scheduled` and `@Async` annotations, you can add `@EnableScheduling`
+and `@EnableAsync` to one of your `@Configuration` classes, as the following example shows:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -338,7 +331,7 @@ For example, the previous example can also be written as follows.

 If you need a fixed-rate execution, you can use the `fixedRate` attribute within the
 annotation. The following method is invoked every five seconds (measured between the
-successive start times of each invocation).
+successive start times of each invocation):

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -348,9 +341,9 @@ successive start times of each invocation).
 	}
 ----

-For fixed-delay and fixed-rate tasks, you can specify an initial delay by indicating the
-amount of time to wait before the first execution of the method, as the following
-`fixedRate` example shows.
+For fixed-delay and fixed-rate tasks, you can specify an initial delay by indicating
+the amount of time to wait before the first execution of the method, as the following
+`fixedRate` example shows:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -380,6 +373,12 @@ Notice that the methods to be scheduled must have void returns and must not acce
 arguments. If the method needs to interact with other objects from the application
 context, those would typically have been provided through dependency injection.

+`@Scheduled` can be used as a repeatable annotation. If several scheduled declarations
+are found on the same method, each of them will be processed independently, with a
+separate trigger firing for each of them. As a consequence, such co-located schedules
+may overlap and execute multiple times in parallel or in immediate succession.
+Please make sure that your specified cron expressions etc do not accidentally overlap.
+
 [NOTE]
 ====
 As of Spring Framework 4.3, `@Scheduled` methods are supported on beans of any scope.
@@ -413,8 +412,8 @@ to a method that returns `void`, as the following example shows:

 Unlike the methods annotated with the `@Scheduled` annotation, these methods can expect
 arguments, because they are invoked in the "`normal`" way by callers at runtime rather
-than from a scheduled task being managed by the container. For example, the following code is
-a legitimate application of the `@Async` annotation:
+than from a scheduled task being managed by the container. For example, the following
+code is a legitimate application of the `@Async` annotation:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -438,15 +437,15 @@ that returns a value:
 	}
 ----

-TIP: `@Async` methods may not only declare a regular `java.util.concurrent.Future` return type
-but also Spring's `org.springframework.util.concurrent.ListenableFuture` or, as of Spring
-4.2, JDK 8's `java.util.concurrent.CompletableFuture`, for richer interaction with the
-asynchronous task and for immediate composition with further processing steps.
+TIP: `@Async` methods may not only declare a regular `java.util.concurrent.Future` return
+type but also Spring's `org.springframework.util.concurrent.ListenableFuture` or, as of
+Spring 4.2, JDK 8's `java.util.concurrent.CompletableFuture`, for richer interaction with
+the asynchronous task and for immediate composition with further processing steps.

-You can not use `@Async` in conjunction with lifecycle callbacks such as
-`@PostConstruct`. To asynchronously initialize Spring beans, you currently have to use
-a separate initializing Spring bean that then invokes the `@Async` annotated method on the
-target, as the following example shows:
+You can not use `@Async` in conjunction with lifecycle callbacks such as `@PostConstruct`.
+To asynchronously initialize Spring beans, you currently have to use a separate
+initializing Spring bean that then invokes the `@Async` annotated method on the target,
+as the following example shows:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -500,8 +499,8 @@ used when executing a given method. The following example shows how to do so:
 ----

 In this case, `"otherExecutor"` can be the name of any `Executor` bean in the Spring
-container, or it may be the name of a qualifier associated with any `Executor` (for example, as
-specified with the `<qualifier>` element or Spring's `@Qualifier` annotation).
+container, or it may be the name of a qualifier associated with any `Executor` (for example,
+as specified with the `<qualifier>` element or Spring's `@Qualifier` annotation).


 [[scheduling-annotation-support-exception]]
@@ -669,14 +668,15 @@ invoked on that object. The following listing shows a simple example:
 ----

 The scheduler is referenced by the outer element, and each individual
-task includes the configuration of its trigger metadata. In the preceding example, that
-metadata defines a periodic trigger with a fixed delay indicating the number of
+task includes the configuration of its trigger metadata. In the preceding example,
+that metadata defines a periodic trigger with a fixed delay indicating the number of
 milliseconds to wait after each task execution has completed. Another option is
 `fixed-rate`, indicating how often the method should be run regardless of how long
-any previous execution takes. Additionally, for both `fixed-delay` and `fixed-rate` tasks, you can specify an
-'initial-delay' parameter, indicating the number of milliseconds to wait
-before the first execution of the method. For more control, you can instead provide a `cron` attribute
-to provide a xref:integration/scheduling.adoc#scheduling-cron-expression[cron expression].
+any previous execution takes. Additionally, for both `fixed-delay` and `fixed-rate`
+tasks, you can specify an 'initial-delay' parameter, indicating the number of
+milliseconds to wait before the first execution of the method. For more control,
+you can instead provide a `cron` attribute to provide a
+xref:integration/scheduling.adoc#scheduling-cron-expression[cron expression].
 The following example shows these other options:

 [source,xml,indent=0]
@@ -699,9 +699,8 @@ The following example shows these other options:
 All Spring cron expressions have to conform to the same format, whether you are using them in
 xref:integration/scheduling.adoc#scheduling-annotation-support-scheduled[`@Scheduled` annotations],
 xref:integration/scheduling.adoc#scheduling-task-namespace-scheduled-tasks[`task:scheduled-tasks` elements],
-or someplace else.
-A well-formed cron expression, such as `* * * * * *`, consists of six space-separated time and date
-fields, each with its own range of valid values:
+or someplace else. A well-formed cron expression, such as `* * * * * *`, consists of six
+space-separated time and date fields, each with its own range of valid values:


 ....
@@ -766,9 +765,10 @@ Here are some examples:
 [[macros]]
 === Macros

-Expressions such as `0 0 * * * *` are hard for humans to parse and are, therefore, hard to fix in case of bugs.
-To improve readability, Spring supports the following macros, which represent commonly used sequences.
-You can use these macros instead of the six-digit value, thus: `@Scheduled(cron = "@hourly")`.
+Expressions such as `0 0 * * * *` are hard for humans to parse and are, therefore,
+hard to fix in case of bugs. To improve readability, Spring supports the following
+macros, which represent commonly used sequences. You can use these macros instead
+of the six-digit value, thus: `@Scheduled(cron = "@hourly")`.

 |===
 |Macro                          | Meaning
@@ -785,8 +785,8 @@ You can use these macros instead of the six-digit value, thus: `@Scheduled(cron
 [[scheduling-quartz]]
 == Using the Quartz Scheduler

-Quartz uses `Trigger`, `Job`, and `JobDetail` objects to realize scheduling of all kinds
-of jobs. For the basic concepts behind Quartz, see the
+Quartz uses `Trigger`, `Job`, and `JobDetail` objects to realize scheduling of all
+kinds of jobs. For the basic concepts behind Quartz, see the
 https://www.quartz-scheduler.org/[Quartz Web site]. For convenience purposes, Spring
 offers a couple of classes that simplify using Quartz within Spring-based applications.

@@ -794,9 +794,9 @@ offers a couple of classes that simplify using Quartz within Spring-based applic
 [[scheduling-quartz-jobdetail]]
 === Using the `JobDetailFactoryBean`

-Quartz `JobDetail` objects contain all the information needed to run a job. Spring provides a
-`JobDetailFactoryBean`, which provides bean-style properties for XML configuration purposes.
-Consider the following example:
+Quartz `JobDetail` objects contain all the information needed to run a job. Spring
+provides a `JobDetailFactoryBean`, which provides bean-style properties for XML
+configuration purposes. Consider the following example:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
@@ -813,9 +813,9 @@ Consider the following example:
 The job detail configuration has all the information it needs to run the job (`ExampleJob`).
 The timeout is specified in the job data map. The job data map is available through the
 `JobExecutionContext` (passed to you at execution time), but the `JobDetail` also gets
-its properties from the job data mapped to properties of the job instance. So, in the following example,
-the `ExampleJob` contains a bean property named `timeout`, and the `JobDetail`
-has it applied automatically:
+its properties from the job data mapped to properties of the job instance. So, in the
+following example, the `ExampleJob` contains a bean property named `timeout`, and the
+`JobDetail` has it applied automatically:

 [source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
@@ -908,8 +908,8 @@ NOTE: By default, jobs will run in a concurrent fashion.
 [[scheduling-quartz-cron]]
 === Wiring up Jobs by Using Triggers and `SchedulerFactoryBean`

-We have created job details and jobs. We have also reviewed the convenience bean that lets
-you invoke a method on a specific object. Of course, we still need to schedule the
+We have created job details and jobs. We have also reviewed the convenience bean that
+lets you invoke a method on a specific object. Of course, we still need to schedule the
 jobs themselves. This is done by using triggers and a `SchedulerFactoryBean`. Several
 triggers are available within Quartz, and Spring offers two Quartz `FactoryBean`
 implementations with convenient defaults: `CronTriggerFactoryBean` and
@@ -940,9 +940,9 @@ The following listing uses both a `SimpleTriggerFactoryBean` and a `CronTriggerF
 	</bean>
 ----

-The preceding example sets up two triggers, one running every 50 seconds with a starting delay of 10
-seconds and one running every morning at 6 AM. To finalize everything, we need to set up the
-`SchedulerFactoryBean`, as the following example shows:
+The preceding example sets up two triggers, one running every 50 seconds with a starting
+delay of 10 seconds and one running every morning at 6 AM. To finalize everything,
+we need to set up the `SchedulerFactoryBean`, as the following example shows:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
@@ -236,6 +236,42 @@ be matched, not only the `GET` method.



+[[declaration-site-variance]]
+== Declaration-site variance
+
+Dealing with generic types in Spring applications written in Kotlin may require, for some use cases, to understand
+Kotlin https://kotlinlang.org/docs/generics.html#declaration-site-variance[declaration-site variance]
+which allows to define the variance when declaring a type, which is not possible in Java which supports only use-site
+variance.
+
+For example, declaring `List<Foo>` in Kotlin is conceptually equivalent to `java.util.List<? extends Foo>` because
+`kotlin.collections.List` is declared as
+https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-list/[`interface List<out E> : kotlin.collections.Collection<E>`].
+
+This needs to be taken in account by using the `out` Kotlin keyword on generic types when using Java classes,
+for example when writing a `org.springframework.core.convert.converter.Converter` from a Kotlin type to a Java type.
+
+[source,kotlin,indent=0]
+----
+class ListOfFooConverter : Converter<List<Foo>, CustomJavaList<out Foo>> {
+    // ...
+}
+----
+
+When converting any kind of objects, star projection with `*` can be used instead of `out Any`.
+[source,kotlin,indent=0]
+----
+class ListOfAnyConverter : Converter<List<*>, CustomJavaList<*>> {
+    // ...
+}
+----
+
+NOTE: Spring Framework does not leverage yet declaration-site variance type information for injecting beans,
+subscribe to https://github.com/spring-projects/spring-framework/issues/22313[spring-framework#22313] to track related
+progresses.
+
+
+
 [[testing]]
 == Testing

@@ -1023,7 +1023,7 @@ Two, create a proxy that will perform the declared RSocket exchanges:
 	RSocketRequester requester = ... ;
 	RSocketServiceProxyFactory factory = RSocketServiceProxyFactory.builder(requester).build();

-	RepositoryService service = factory.createClient(RadarService.class);
+	RadarService service = factory.createClient(RadarService.class);
 ----


@@ -3,13 +3,4 @@
 :page-section-summary-toc: 1

 This section covers annotations that you can use when you test Spring applications.
-It includes the following topics:
-
-* xref:testing/annotations/integration-standard.adoc[Standard Annotation Support]
-* xref:testing/annotations/integration-spring.adoc[Spring Testing Annotations]
-* xref:testing/annotations/integration-junit4.adoc[Spring JUnit 4 Testing Annotations]
-* xref:testing/annotations/integration-junit-jupiter.adoc[Spring JUnit Jupiter Testing Annotations]
-* xref:testing/annotations/integration-meta.adoc[Meta-Annotation Support for Testing]
-
-

@@ -10,7 +10,7 @@ Resource locations are typically XML configuration files or Groovy scripts locat
 classpath, while component classes are typically `@Configuration` classes. However,
 resource locations can also refer to files and scripts in the file system, and component
 classes can be `@Component` classes, `@Service` classes, and so on. See
-xref:testing/testcontext-framework/ctx-management/javaconfig.adoc#testcontext-ctx-management-javaconfig-component-classes[null] for further details.
+xref:testing/testcontext-framework/ctx-management/javaconfig.adoc#testcontext-ctx-management-javaconfig-component-classes[Component Classes] for further details.

 The following example shows a `@ContextConfiguration` annotation that refers to an XML
 file:
@@ -152,7 +152,7 @@ Kotlin::
 		@Autowired
 		lateinit var accountService: AccountService

-		lateinit mockMvc: MockMvc
+		lateinit var mockMvc: MockMvc

 		@BeforeEach
 		fun setup(wac: WebApplicationContext) {
@@ -14,7 +14,7 @@ following features.
    testing annotations -- as long as the tests are run using a JUnit Platform
    `TestEngine` that is registered for the current project.
 * Build-time AOT processing: each unique test `ApplicationContext` in the current project
-  will be xref:core/aot.adoc#refresh[refreshed for AOT processing].
+  will be xref:core/aot.adoc#aot.refresh[refreshed for AOT processing].
 * Runtime AOT support: when executing in AOT runtime mode, a Spring integration test will
  use an AOT-optimized `ApplicationContext` that participates transparently with the
  xref:testing/testcontext-framework/ctx-management/caching.adoc[context cache].
@@ -35,7 +35,7 @@ the following options.
  via {api-spring-framework}/context/annotation/ImportRuntimeHints.html[`@ImportRuntimeHints`].
 * Annotate a test class with {api-spring-framework}/aot/hint/annotation/Reflective.html[`@Reflective`] or
  {api-spring-framework}/aot/hint/annotation/RegisterReflectionForBinding.html[`@RegisterReflectionForBinding`].
-* See xref:core/aot.adoc#hints[Runtime Hints] for details on Spring's core runtime hints
+* See xref:core/aot.adoc#aot.hints[Runtime Hints] for details on Spring's core runtime hints
  and annotation support.

 [TIP]
@@ -35,8 +35,8 @@ in which the test class is defined. A path starting with a slash is treated as a
 absolute classpath resource (for example: `"/org/example/test.xml"`). A path that
 references a URL (for example, a path prefixed with `classpath:`, `file:`, or `http:`) is
 loaded by using the specified resource protocol. Resource location wildcards (such as
-`**/*.properties`) are not permitted: Each location must evaluate to exactly one
-`.properties` or `.xml` resource.
+`{asterisk}{asterisk}/{asterisk}.properties`) are not permitted: Each location must
+evaluate to exactly one `.properties` or `.xml` resource.

 The following example uses a test properties file:

@@ -75,6 +75,35 @@ To learn more from the source or to make advanced customizations, see:



+[[webflux-cors-credentialed-requests]]
+== Credentialed Requests
+[.small]#xref:web/webmvc-cors.adoc#mvc-cors-credentialed-requests[See equivalent in the Servlet stack]#
+
+Using CORS with credentialed requests requires enabling `allowedCredentials`. Be aware that
+this option establishes a high level of trust with the configured domains and also increases
+the surface of attack of the web application by exposing sensitive user-specific information
+such as cookies and CSRF tokens.
+
+Enabling credentials also impacts how the configured `"*"` CORS wildcards are processed:
+
+* Wildcards are not authorized in `allowOrigins`, but alternatively
+the `allowOriginPatterns` property may be used to match to a dynamic set of origins.
+* When set on `allowedHeaders` or `allowedMethods`, the `Access-Control-Allow-Headers`
+and `Access-Control-Allow-Methods` response headers are handled by copying the related
+headers and method specified in the CORS preflight request.
+* When set on `exposedHeaders`, `Access-Control-Expose-Headers` response header is set
+either to the configured list of headers or to the wildcard character. While the CORS spec
+does not allow the wildcard character when `Access-Control-Allow-Credentials` is set to
+`true`, most browsers support it and the response headers are not all available during the
+CORS processing, so as a consequence the wildcard character is the header value used when
+specified regardless of the value of the `allowCredentials` property.
+
+WARNING: While such wildcard configuration can be handy, it is recommended when possible to configure
+a finite set of values instead to provide a higher level of security.
+
+
+
+
 [[webflux-cors-controller]]
 == `@CrossOrigin`
 [.small]#xref:web/webmvc-cors.adoc#mvc-cors-controller[See equivalent in the Servlet stack]#
@@ -166,4 +166,7 @@ By default, any argument that is not a simple value type (as determined by
 and is not resolved by any other argument resolver is treated as if it were annotated
 with `@ModelAttribute`.

-
+WARNING: When compiling to a native image with GraalVM, the implicit `@ModelAttribute`
+support described above does not allow proper ahead-of-time inference of related data
+binding reflection hints. As a consequence, it is recommended to explicitly annotate
+method parameters with `@ModelAttribute` for use in a GraalVM native image.
@@ -189,6 +189,9 @@ lets applications use the Servlet API directly if they need to. Spring WebFlux
 relies on Servlet non-blocking I/O and uses the Servlet API behind a low-level
 adapter. It is not exposed for direct use.

+NOTE: It is strongly advised not to map Servlet filters or directly manipulate the Servlet API in the context of a WebFlux application.
+For the reasons listed above, mixing blocking I/O and non-blocking I/O in the same context will cause runtime issues.
+
 For Undertow, Spring WebFlux uses Undertow APIs directly without the Servlet API.


@@ -197,9 +200,9 @@ For Undertow, Spring WebFlux uses Undertow APIs directly without the Servlet API
 == Performance

 Performance has many characteristics and meanings. Reactive and non-blocking generally
-do not make applications run faster. They can, in some cases, (for example, if using the
-`WebClient` to run remote calls in parallel). On the whole, it requires more work to do
-things the non-blocking way and that can slightly increase the required processing time.
+do not make applications run faster. They can in some cases – for example, if using the
+`WebClient` to run remote calls in parallel. However, it requires more work to do
+things the non-blocking way, and that can slightly increase the required processing time.

 The key expected benefit of reactive and non-blocking is the ability to scale with a small,
 fixed number of threads and less memory. That makes applications more resilient under load,
@@ -221,10 +224,10 @@ block the current thread, (for example, for remote calls). For this reason, serv
 use a large thread pool to absorb potential blocking during request handling.

 In Spring WebFlux (and non-blocking servers in general), it is assumed that applications
-do not block. Therefore, non-blocking servers use  a small, fixed-size thread pool
+do not block. Therefore, non-blocking servers use a small, fixed-size thread pool
 (event loop workers) to handle requests.

-TIP: "`To scale`" and "`small number of threads`" may sound contradictory but to never block the
+TIP: "`To scale`" and "`small number of threads`" may sound contradictory, but to never block the
 current thread (and rely on callbacks instead) means that you do not need extra threads, as
 there are no blocking calls to absorb.

@@ -250,7 +253,7 @@ application code within that pipeline is never invoked concurrently.

 What threads should you expect to see on a server running with Spring WebFlux?

-* On a "`vanilla`" Spring WebFlux server (for example, no data access nor other optional
+* On a "`vanilla`" Spring WebFlux server (for example, no data access or other optional
 dependencies), you can expect one thread for the server and several others for request
 processing (typically as many as the number of CPU cores). Servlet containers, however,
 may start with more threads (for example, 10 on Tomcat), in support of both servlet (blocking) I/O
@@ -25,6 +25,35 @@ powerful workarounds based on IFRAME or JSONP.



+[[mvc-cors-credentialed-requests]]
+== Credentialed Requests
+[.small]#xref:web/webflux-cors.adoc#webflux-cors-credentialed-requests[See equivalent in the Reactive stack]#
+
+Using CORS with credentialed requests requires enabling `allowedCredentials`. Be aware that
+this option establishes a high level of trust with the configured domains and also increases
+the surface of attack of the web application by exposing sensitive user-specific information
+such as cookies and CSRF tokens.
+
+Enabling credentials also impacts how the configured `"*"` CORS wildcards are processed:
+
+* Wildcards are not authorized in `allowOrigins`, but alternatively
+the `allowOriginPatterns` property may be used to match to a dynamic set of origins.
+* When set on `allowedHeaders` or `allowedMethods`, the `Access-Control-Allow-Headers`
+and `Access-Control-Allow-Methods` response headers are handled by copying the related
+headers and method specified in the CORS preflight request.
+* When set on `exposedHeaders`, `Access-Control-Expose-Headers` response header is set
+either to the configured list of headers or to the wildcard character. While the CORS spec
+does not allow the wildcard character when `Access-Control-Allow-Credentials` is set to
+`true`, most browsers support it and the response headers are not all available during the
+CORS processing, so as a consequence the wildcard character is the header value used when
+specified regardless of the value of the `allowCredentials` property.
+
+WARNING: While such wildcard configuration can be handy, it is recommended when possible to configure
+a finite set of values instead to provide a higher level of security.
+
+
+
+
 [[mvc-cors-processing]]
 == Processing
 [.small]#xref:web/webflux-cors.adoc#webflux-cors-processing[See equivalent in the Reactive stack]#
@@ -69,9 +69,11 @@ written to the response and computing an MD5 hash from it. The next time a clien
 it does the same, but it also compares the computed value against the `If-None-Match`
 request header and, if the two are equal, returns a 304 (NOT_MODIFIED).

-This strategy saves network bandwidth but not CPU, as the full response must be computed
-for each request. Other strategies at the controller level, described earlier, can avoid
-the computation. See xref:web/webmvc/mvc-caching.adoc[HTTP Caching].
+This strategy saves network bandwidth but not CPU, as the full response must be computed for each request.
+State-changing HTTP methods and other HTTP conditional request headers such as `If-Match` and
+`If-Unmodified-Since` are outside the scope of this filter. Other strategies at the controller level
+can avoid the computation and have a broader support for HTTP conditional requests.
+See xref:web/webmvc/mvc-caching.adoc[HTTP Caching].

 This filter has a `writeWeakETag` parameter that configures the filter to write weak ETags
 similar to the following: `W/"02a2d595e6ed9a0b24f027f2b63b134d6"` (as defined in
@@ -52,7 +52,7 @@ The following example shows how to achieve the same configuration in XML:
 	</mvc:interceptors>
 ----

-NOTE: Mapped interceptors are not ideally suited as a security layer due to the potential
+NOTE: Interceptors are not ideally suited as a security layer due to the potential
 for a mismatch with annotated controller path matching, which can also match trailing
 slashes and path extensions transparently, along with other path matching options. Many
 of these options have been deprecated but the potential for a mismatch remains.
@@ -61,6 +61,10 @@ https://docs.spring.io/spring-security/reference/servlet/integrations/mvc.html#m
 to align with Spring MVC path matching and also has a security firewall that blocks many
 unwanted characters in URL paths.

-
-
-
+NOTE: The XML config declares interceptors as `MappedInterceptor` beans, and those are in
+turn detected by any `HandlerMapping` bean, including those from other frameworks.
+By contrast, the Java config passes interceptors only to the  `HandlerMapping` beans it manages.
+To re-use the same interceptors across Spring MVC and other framework `HandlerMapping`
+beans with the MVC Java config, either declare `MappedInterceptor` beans (and don't
+manually add them in the Java config), or configure the same interceptors in both
+the Java config and in other `HandlerMapping` beans.
@@ -216,4 +216,7 @@ By default, any argument that is not a simple value type (as determined by
 and is not resolved by any other argument resolver is treated as if it were annotated
 with `@ModelAttribute`.

-
+WARNING: When compiling to a native image with GraalVM, the implicit `@ModelAttribute`
+support described above does not allow proper ahead-of-time inference of related data
+binding reflection hints. As a consequence, it is recommended to explicitly annotate
+method parameters with `@ModelAttribute` for use in a GraalVM native image.
@@ -220,7 +220,7 @@ one of the following depending on whether use of parsed `PathPattern` is enabled
 * {api-spring-framework}/web/util/pattern/PathPattern.html#SPECIFICITY_COMPARATOR[`PathPattern.SPECIFICITY_COMPARATOR`]
 * {api-spring-framework}/util/AntPathMatcher.html#getPatternComparator-java.lang.String-[`AntPathMatcher.getPatternComparator(String path)`]

-Both help to sort patterns with more specific ones on top. A pattern is less specific if
+Both help to sort patterns with more specific ones on top. A pattern is more specific if
 it has a lower count of URI variables (counted as 1), single wildcards (counted as 1),
 and double wildcards (counted as 2). Given an equal score, the longer pattern is chosen.
 Given the same score and length, the pattern with more URI variables than wildcards is
@@ -229,34 +229,27 @@ Java initialization API. The following example shows how to do so:


 [[websocket-server-runtime-configuration]]
-== Server Configuration
+== Configuring the Server
 [.small]#xref:web/webflux-websocket.adoc#webflux-websocket-server-config[See equivalent in the Reactive stack]#

-Each underlying WebSocket engine exposes configuration properties that control
-runtime characteristics, such as the size of message buffer sizes, idle timeout,
-and others.
+You can configure of the underlying WebSocket server such as input message buffer size,
+idle timeout, and more.

-For Tomcat, WildFly, and GlassFish, you can add a `ServletServerContainerFactoryBean` to your
-WebSocket Java config, as the following example shows:
+For Jakarta WebSocket servers, you can add a `ServletServerContainerFactoryBean` to your
+Java configuration. For example:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
-	@Configuration
-	@EnableWebSocket
-	public class WebSocketConfig implements WebSocketConfigurer {
-
-		@Bean
-		public ServletServerContainerFactoryBean createWebSocketContainer() {
-			ServletServerContainerFactoryBean container = new ServletServerContainerFactoryBean();
-			container.setMaxTextMessageBufferSize(8192);
-			container.setMaxBinaryMessageBufferSize(8192);
-			return container;
-		}
-
-	}
+     @Bean
+     public ServletServerContainerFactoryBean createWebSocketContainer() {
+         ServletServerContainerFactoryBean container = new ServletServerContainerFactoryBean();
+         container.setMaxTextMessageBufferSize(8192);
+         container.setMaxBinaryMessageBufferSize(8192);
+         return container;
+     }
 ----

-The following example shows the XML configuration equivalent of the preceding example:
+Or to your XML configuration:

 [source,xml,indent=0,subs="verbatim,quotes,attributes"]
 ----
@@ -277,12 +270,11 @@ The following example shows the XML configuration equivalent of the preceding ex
 	</beans>
 ----

-NOTE: For client-side WebSocket configuration, you should use `WebSocketContainerFactoryBean`
-(XML) or `ContainerProvider.getWebSocketContainer()` (Java configuration).
+NOTE: For client Jakarta WebSocket configuration, use
+ContainerProvider.getWebSocketContainer() in Java configuration, or
+`WebSocketContainerFactoryBean` in XML.

-For Jetty, you need to supply a pre-configured Jetty `WebSocketServerFactory` and plug
-that into Spring's `DefaultHandshakeHandler` through your WebSocket Java config.
-The following example shows how to do so:
+For Jetty, you can supply a `Consumer` callback to configure the WebSocket server:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -298,11 +290,9 @@ The following example shows how to do so:

 		@Bean
 		public DefaultHandshakeHandler handshakeHandler() {
-
 			WebSocketPolicy policy = new WebSocketPolicy(WebSocketBehavior.SERVER);
 			policy.setInputBufferSize(8192);
 			policy.setIdleTimeout(600000);
-
 			return new DefaultHandshakeHandler(
 					new JettyRequestUpgradeStrategy(new WebSocketServerFactory(policy)));
 		}
@@ -349,6 +339,10 @@ The following example shows the XML configuration equivalent of the preceding ex
 	</beans>
 ----

+TIP: When using STOMP over WebSocket, you will also need to configure
+xref:web/websocket/stomp/server-config.adoc[STOMP WebSocket transport]
+properties.
+


 [[websocket-server-allowed-origins]]
@@ -103,9 +103,9 @@ You can also use the WebSocket transport configuration shown earlier to configur
 maximum allowed size for incoming STOMP messages. In theory, a WebSocket
 message can be almost unlimited in size. In practice, WebSocket servers impose
 limits -- for example, 8K on Tomcat and 64K on Jetty. For this reason, STOMP clients
-(such as the JavaScript https://github.com/JSteunou/webstomp-client[webstomp-client]
-and others) split larger STOMP messages at 16K boundaries and send them as multiple
-WebSocket  messages, which requires the server to buffer and re-assemble.
+such as https://github.com/stomp-js/stompjs[`stomp-js/stompjs`] and others split larger
+STOMP messages at 16K boundaries and send them as multiple WebSocket messages,
+which requires the server to buffer and re-assemble.

 Spring's STOMP-over-WebSocket support does this ,so applications can configure the
 maximum size for STOMP messages irrespective of WebSocket server-specific message
@@ -3,7 +3,7 @@

 STOMP over WebSocket support is available in the `spring-messaging` and
 `spring-websocket` modules. Once you have those dependencies, you can expose a STOMP
-endpoint over WebSocket with xref:web/websocket/fallback.adoc[SockJS Fallback], as the following example shows:
+endpoint over WebSocket, as the following example shows:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -16,7 +16,7 @@ endpoint over WebSocket with xref:web/websocket/fallback.adoc[SockJS Fallback],

 		@Override
 		public void registerStompEndpoints(StompEndpointRegistry registry) {
-			registry.addEndpoint("/portfolio").withSockJS(); // <1>
+			registry.addEndpoint("/portfolio"); // <1>
 		}

 		@Override
@@ -49,9 +49,7 @@ The following example shows the XML configuration equivalent of the preceding ex
 			https://www.springframework.org/schema/websocket/spring-websocket.xsd">

 		<websocket:message-broker application-destination-prefix="/app">
-			<websocket:stomp-endpoint path="/portfolio">
-				<websocket:sockjs/>
-			</websocket:stomp-endpoint>
+			<websocket:stomp-endpoint path="/portfolio" />
 			<websocket:simple-broker prefix="/topic, /queue"/>
 		</websocket:message-broker>

@@ -64,34 +62,27 @@ messaging (that is, many subscribers versus one consumer). When you use an exter
 check the STOMP page of the broker to understand what kind of STOMP destinations and
 prefixes it supports.

-To connect from a browser, for SockJS, you can use the
-https://github.com/sockjs/sockjs-client[`sockjs-client`]. For STOMP, many applications have
-used the https://github.com/jmesnil/stomp-websocket[jmesnil/stomp-websocket] library
-(also known as stomp.js), which is feature-complete and has been used in production for
-years but is no longer maintained. At present the
-https://github.com/JSteunou/webstomp-client[JSteunou/webstomp-client] is the most
-actively maintained and evolving successor of that library. The following example code
-is based on it:
+To connect from a browser, for STOMP, you can use
+https://github.com/stomp-js/stompjs[`stomp-js/stompjs`] which is the most
+actively maintained JavaScript library.
+
+The following example code is based on it:

 [source,javascript,indent=0,subs="verbatim,quotes"]
 ----
-	var socket = new SockJS("/spring-websocket-portfolio/portfolio");
-	var stompClient = webstomp.over(socket);
-
-	stompClient.connect({}, function(frame) {
-	}
+	const stompClient = new StompJs.Client({
+        brokerURL: 'ws://domain.com/portfolio',
+        onConnect: () => {
+            // ...
+        }
+    });
 ----

-Alternatively, if you connect through WebSocket (without SockJS), you can use the following code:
-
-[source,javascript,indent=0,subs="verbatim,quotes"]
----
-	var socket = new WebSocket("/spring-websocket-portfolio/portfolio");
-	var stompClient = Stomp.over(socket);
-
-	stompClient.connect({}, function(frame) {
-	}
----
+Alternatively, if you connect through SockJS, you can enable the
+xref:web/websocket/fallback.adoc[SockJS Fallback] on server-side with
+`registry.addEndpoint("/portfolio").withSockJS()` and on JavaScript side,
+by following
+https://stomp-js.github.io/guide/stompjs/rx-stomp/using-stomp-with-sockjs.html[those instructions].

 Note that `stompClient` in the preceding example does not need to specify `login`
 and `passcode` headers. Even if it did, they would be ignored (or, rather,
@@ -1,9 +1,14 @@
 [[websocket-stomp-server-config]]
-= WebSocket Server
+= WebSocket Transport

-To configure the underlying WebSocket server, the information in
-xref:web/websocket/server.adoc#websocket-server-runtime-configuration[Server Configuration] applies. For Jetty, however you need to set
-the `HandshakeHandler` and `WebSocketPolicy` through the `StompEndpointRegistry`:
+This section explains how to configure the underlying WebSocket server transport.
+
+For Jakarta WebSocket servers, add a `ServletServerContainerFactoryBean` to your
+configuration. For examples, see
+xref:web/websocket/server.adoc#websocket-server-runtime-configuration[Configuring the Server]
+under the WebSocket section.
+
+For Jetty WebSocket servers, customize the `JettyRequestUpgradeStrategy` as follows:

 [source,java,indent=0,subs="verbatim,quotes"]
 ----
@@ -29,5 +34,20 @@ the `HandshakeHandler` and `WebSocketPolicy` through the `StompEndpointRegistry`
 	}
 ----

+In addition to WebSocket server properties, there are also STOMP WebSocket transport properties
+to customize as follows:

+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebSocketMessageBroker
+	public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {

+		@Override
+		public void configureWebSocketTransport(WebSocketTransportRegistration registry) {
+			registry.setMessageSizeLimit(4 * 8192);
+			registry.setTimeToFirstMessage(30000);
+		}
+
+	}
+----
@@ -8,30 +8,30 @@ javaPlatform {

 dependencies {
 	api(platform("com.fasterxml.jackson:jackson-bom:2.14.3"))
-	api(platform("io.micrometer:micrometer-bom:1.10.8"))
-	api(platform("io.netty:netty-bom:4.1.93.Final"))
+	api(platform("io.micrometer:micrometer-bom:1.10.13"))
+	api(platform("io.netty:netty-bom:4.1.107.Final"))
 	api(platform("io.netty:netty5-bom:5.0.0.Alpha5"))
-	api(platform("io.projectreactor:reactor-bom:2022.0.8"))
+	api(platform("io.projectreactor:reactor-bom:2022.0.17"))
 	api(platform("io.rsocket:rsocket-bom:1.1.3"))
-	api(platform("org.apache.groovy:groovy-bom:4.0.12"))
-	api(platform("org.apache.logging.log4j:log4j-bom:2.20.0"))
-	api(platform("org.eclipse.jetty:jetty-bom:11.0.15"))
+	api(platform("org.apache.groovy:groovy-bom:4.0.19"))
+	api(platform("org.apache.logging.log4j:log4j-bom:2.21.1"))
+	api(platform("org.eclipse.jetty:jetty-bom:11.0.20"))
 	api(platform("org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.4"))
 	api(platform("org.jetbrains.kotlinx:kotlinx-serialization-bom:1.4.0"))
 	api(platform("org.junit:junit-bom:5.9.3"))
-	api(platform("org.mockito:mockito-bom:5.3.1"))
+	api(platform("org.mockito:mockito-bom:5.11.0"))

 	constraints {
 		api("com.fasterxml:aalto-xml:1.3.2")
 		api("com.fasterxml.woodstox:woodstox-core:6.5.1")
-		api("com.github.ben-manes.caffeine:caffeine:3.1.6")
-		api("com.github.librepdf:openpdf:1.3.30")
+		api("com.github.ben-manes.caffeine:caffeine:3.1.8")
+		api("com.github.librepdf:openpdf:1.3.42")
 		api("com.google.code.findbugs:findbugs:3.0.1")
 		api("com.google.code.findbugs:jsr305:3.0.2")
 		api("com.google.code.gson:gson:2.10.1")
 		api("com.google.protobuf:protobuf-java-util:3.23.2")
 		api("com.googlecode.protobuf-java-format:protobuf-java-format:1.4")
-		api("com.h2database:h2:2.1.214")
+		api("com.h2database:h2:2.2.224")
 		api("com.jayway.jsonpath:json-path:2.8.0")
 		api("com.rometools:rome:1.19.0")
 		api("com.squareup.okhttp3:mockwebserver:3.14.9")
@@ -43,21 +43,20 @@ dependencies {
 		api("com.sun.xml.bind:jaxb-xjc:3.0.2")
 		api("com.thoughtworks.qdox:qdox:2.0.3")
 		api("com.thoughtworks.xstream:xstream:1.4.20")
-		api("commons-io:commons-io:2.11.0")
+		api("commons-io:commons-io:2.15.0")
 		api("de.bechte.junit:junit-hierarchicalcontextrunner:4.12.2")
-		api("info.picocli:picocli:4.7.4")
-		api("io.micrometer:context-propagation:1.0.3")
+		api("io.micrometer:context-propagation:1.0.6")
 		api("io.mockk:mockk:1.13.4")
 		api("io.projectreactor.netty:reactor-netty5-http:2.0.0-M3")
 		api("io.projectreactor.tools:blockhound:1.0.8.RELEASE")
 		api("io.r2dbc:r2dbc-h2:1.0.0.RELEASE")
 		api("io.r2dbc:r2dbc-spi-test:1.0.0.RELEASE")
 		api("io.r2dbc:r2dbc-spi:1.0.0.RELEASE")
-		api("io.reactivex.rxjava3:rxjava:3.1.6")
-		api("io.smallrye.reactive:mutiny:1.9.0")
-		api("io.undertow:undertow-core:2.3.7.Final")
-		api("io.undertow:undertow-servlet:2.3.7.Final")
-		api("io.undertow:undertow-websockets-jsr:2.3.7.Final")
+		api("io.reactivex.rxjava3:rxjava:3.1.8")
+		api("io.smallrye.reactive:mutiny:1.10.0")
+		api("io.undertow:undertow-core:2.3.12.Final")
+		api("io.undertow:undertow-servlet:2.3.12.Final")
+		api("io.undertow:undertow-websockets-jsr:2.3.12.Final")
 		api("io.vavr:vavr:0.10.4")
 		api("jakarta.activation:jakarta.activation-api:2.0.1")
 		api("jakarta.annotation:jakarta.annotation-api:2.0.0")
@@ -82,6 +81,7 @@ dependencies {
 		api("jakarta.websocket:jakarta.websocket-api:2.1.0")
 		api("jakarta.websocket:jakarta.websocket-client-api:2.1.0")
 		api("jakarta.xml.bind:jakarta.xml.bind-api:3.0.1")
+		api("javax.annotation:javax.annotation-api:1.3.2")
 		api("javax.cache:cache-api:1.1.1")
 		api("javax.money:money-api:1.1")
 		api("jaxen:jaxen:1.2.0")
@@ -89,46 +89,44 @@ dependencies {
 		api("net.sf.jopt-simple:jopt-simple:5.0.4")
 		api("net.sourceforge.htmlunit:htmlunit:2.70.0")
 		api("org.apache-extras.beanshell:bsh:2.0b6")
-		api("org.apache.activemq:activemq-broker:5.17.4")
-		api("org.apache.activemq:activemq-kahadb-store:5.17.4")
-		api("org.apache.activemq:activemq-stomp:5.17.4")
+		api("org.apache.activemq:activemq-broker:5.17.6")
+		api("org.apache.activemq:activemq-kahadb-store:5.17.6")
+		api("org.apache.activemq:activemq-stomp:5.17.6")
 		api("org.apache.commons:commons-pool2:2.9.0")
 		api("org.apache.derby:derby:10.16.1.1")
 		api("org.apache.derby:derbyclient:10.16.1.1")
 		api("org.apache.derby:derbytools:10.16.1.1")
-		api("org.apache.httpcomponents.client5:httpclient5:5.2.1")
-		api("org.apache.httpcomponents.core5:httpcore5-reactive:5.2.1")
-		api("org.apache.poi:poi-ooxml:5.2.3")
-		api("org.apache.tomcat.embed:tomcat-embed-core:10.1.9")
-		api("org.apache.tomcat.embed:tomcat-embed-websocket:10.1.9")
-		api("org.apache.tomcat:tomcat-util:10.1.8")
-		api("org.apache.tomcat:tomcat-websocket:10.1.8")
-		api("org.aspectj:aspectjrt:1.9.19")
-		api("org.aspectj:aspectjtools:1.9.19")
-		api("org.aspectj:aspectjweaver:1.9.19")
+		api("org.apache.httpcomponents.client5:httpclient5:5.2.3")
+		api("org.apache.httpcomponents.core5:httpcore5-reactive:5.2.4")
+		api("org.apache.poi:poi-ooxml:5.2.5")
+		api("org.apache.tomcat.embed:tomcat-embed-core:10.1.15")
+		api("org.apache.tomcat.embed:tomcat-embed-websocket:10.1.15")
+		api("org.apache.tomcat:tomcat-util:10.1.15")
+		api("org.apache.tomcat:tomcat-websocket:10.1.15")
+		api("org.aspectj:aspectjrt:1.9.20.1")
+		api("org.aspectj:aspectjtools:1.9.20.1")
+		api("org.aspectj:aspectjweaver:1.9.20.1")
 		api("org.assertj:assertj-core:3.24.2")
 		api("org.awaitility:awaitility:4.2.0")
 		api("org.bouncycastle:bcpkix-jdk18on:1.72")
 		api("org.codehaus.jettison:jettison:1.5.4")
 		api("org.dom4j:dom4j:2.1.4")
-		api("org.eclipse.jetty:jetty-reactive-httpclient:3.0.8")
-		api("org.eclipse.persistence:org.eclipse.persistence.jpa:3.0.3")
+		api("org.eclipse.jetty:jetty-reactive-httpclient:3.0.12")
+		api("org.eclipse.persistence:org.eclipse.persistence.jpa:3.0.4")
 		api("org.eclipse:yasson:2.0.4")
 		api("org.ehcache:ehcache:3.10.8")
 		api("org.ehcache:jcache:1.0.1")
 		api("org.freemarker:freemarker:2.3.32")
-		// Substitute for "javax.management:jmxremote_optional:1.0.1_04" which
-		// is not available on Maven Central
 		api("org.glassfish.external:opendmk_jmxremote_optional_jar:1.0-b01-ea")
-		api("org.glassfish.tyrus:tyrus-container-servlet:2.1.3")
 		api("org.glassfish:jakarta.el:4.0.2")
+		api("org.glassfish.tyrus:tyrus-container-servlet:2.1.3")
 		api("org.graalvm.sdk:graal-sdk:22.3.1")
 		api("org.hamcrest:hamcrest:2.2")
 		api("org.hibernate:hibernate-core-jakarta:5.6.15.Final")
 		api("org.hibernate:hibernate-validator:7.0.5.Final")
-		api("org.hsqldb:hsqldb:2.7.1")
+		api("org.hsqldb:hsqldb:2.7.2")
 		api("org.javamoney:moneta:1.4.2")
-		api("org.jruby:jruby:9.4.3.0")
+		api("org.jruby:jruby:9.4.6.0")
 		api("org.junit.support:testng-engine:1.0.4")
 		api("org.mozilla:rhino:1.7.14")
 		api("org.ogce:xpp3:1.1.6")
@@ -137,10 +135,10 @@ dependencies {
 		api("org.seleniumhq.selenium:htmlunit-driver:2.70.0")
 		api("org.seleniumhq.selenium:selenium-java:3.141.59")
 		api("org.skyscreamer:jsonassert:1.5.1")
-		api("org.slf4j:slf4j-api:2.0.7")
+		api("org.slf4j:slf4j-api:2.0.12")
 		api("org.testng:testng:7.8.0")
 		api("org.webjars:underscorejs:1.8.3")
-		api("org.webjars:webjars-locator-core:0.52")
+		api("org.webjars:webjars-locator-core:0.55")
 		api("org.xmlunit:xmlunit-assertj:2.9.1")
 		api("org.xmlunit:xmlunit-matchers:2.9.1")
 		api("org.yaml:snakeyaml:1.33")
@@ -1,4 +1,4 @@
-version=6.0.10-SNAPSHOT
+version=6.0.18

 org.gradle.caching=true
 org.gradle.jvmargs=-Xmx2048m
@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -83,7 +83,8 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit

 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -130,10 +131,13 @@ location of your Java installation."
    fi
 else
    JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi

 # Increase the maximum file descriptors if we can.
@@ -141,7 +145,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
    case $MAX_FD in #(
      max*)
        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
        MAX_FD=$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
@@ -149,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
      '' | soft) :;; #(
      *)
        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
        ulimit -n "$MAX_FD" ||
            warn "Could not set maximum file descriptor limit to $MAX_FD"
    esac
@@ -198,11 +202,11 @@ fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'

-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.

 set -- \
        "-Dorg.gradle.appname=$APP_BASE_NAME" \
@@ -43,11 +43,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute

-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2

 goto fail

@@ -57,11 +57,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe

 if exist "%JAVA_EXE%" goto execute

-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2

 goto fail

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -21,11 +21,15 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

+import org.assertj.core.api.InstanceOfAssertFactories;
 import org.junit.jupiter.api.Test;

 import org.springframework.core.MethodParameter;
 import org.springframework.core.convert.TypeDescriptor;
 import org.springframework.expression.MethodExecutor;
+import org.springframework.expression.TypedValue;
+
+import static org.assertj.core.api.Assertions.assertThat;

 class Spr7538Tests {

@@ -49,8 +53,9 @@ class Spr7538Tests {
 		ReflectiveMethodResolver resolver = new ReflectiveMethodResolver();
 		MethodExecutor executor = resolver.resolve(context, target, "checkCompleteness", argumentTypes);

-		Object result = executor.execute(context, target, arguments);
-		System.out.println("Result: " + result);
+		TypedValue typedValue = executor.execute(context, target, arguments);
+		assertThat(typedValue.getValue()).asInstanceOf(InstanceOfAssertFactories.BOOLEAN).isTrue();
+		assertThat(typedValue.getTypeDescriptor().getType()).isEqualTo(Boolean.class);
 	}

 	static class AlwaysTrueReleaseStrategy {
@@ -60,8 +60,8 @@ class ScheduledAndTransactionalAnnotationIntegrationTests {
 		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
 		ctx.register(Config.class, JdkProxyTxConfig.class, RepoConfigA.class);
 		assertThatExceptionOfType(BeanCreationException.class)
-			.isThrownBy(ctx::refresh)
-			.withCauseInstanceOf(IllegalStateException.class);
+				.isThrownBy(ctx::refresh)
+				.withCauseInstanceOf(IllegalStateException.class);
 	}

 	@Test
@@ -70,7 +70,7 @@ class ScheduledAndTransactionalAnnotationIntegrationTests {
 		ctx.register(Config.class, SubclassProxyTxConfig.class, RepoConfigA.class);
 		ctx.refresh();

-		Thread.sleep(100);  // allow @Scheduled method to be called several times
+		Thread.sleep(200);  // allow @Scheduled method to be called several times

 		MyRepository repository = ctx.getBean(MyRepository.class);
 		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);
@@ -85,7 +85,7 @@ class ScheduledAndTransactionalAnnotationIntegrationTests {
 		ctx.register(Config.class, JdkProxyTxConfig.class, RepoConfigB.class);
 		ctx.refresh();

-		Thread.sleep(100);  // allow @Scheduled method to be called several times
+		Thread.sleep(200);  // allow @Scheduled method to be called several times

 		MyRepositoryWithScheduledMethod repository = ctx.getBean(MyRepositoryWithScheduledMethod.class);
 		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);
@@ -100,7 +100,7 @@ class ScheduledAndTransactionalAnnotationIntegrationTests {
 		ctx.register(AspectConfig.class, MyRepositoryWithScheduledMethodImpl.class);
 		ctx.refresh();

-		Thread.sleep(100);  // allow @Scheduled method to be called several times
+		Thread.sleep(200);  // allow @Scheduled method to be called several times

 		MyRepositoryWithScheduledMethod repository = ctx.getBean(MyRepositoryWithScheduledMethod.class);
 		assertThat(AopUtils.isCglibProxy(repository)).isTrue();
@@ -47,7 +47,8 @@ rootProject.children.each {project ->
 settings.gradle.projectsLoaded {
 	gradleEnterprise {
 		buildScan {
-			File buildDir = settings.gradle.rootProject.getBuildDir()
+			File buildDir = settings.gradle.rootProject
+					.getLayout().getBuildDirectory().getAsFile().get()
 			buildDir.mkdirs()
 			new File(buildDir, "build-scan-uri.txt").text = "(build scan not generated)"
 			buildScanPublished { scan ->
@@ -3,11 +3,12 @@ description = "Spring AOP"
 dependencies {
 	api(project(":spring-beans"))
 	api(project(":spring-core"))
-	optional("org.aspectj:aspectjweaver")
 	optional("org.apache.commons:commons-pool2")
+	optional("org.aspectj:aspectjweaver")
+	testFixturesImplementation(testFixtures(project(":spring-beans")))
+	testFixturesImplementation(testFixtures(project(":spring-core")))
+	testFixturesImplementation("com.google.code.findbugs:jsr305")
 	testImplementation(project(":spring-core-test"))
 	testImplementation(testFixtures(project(":spring-beans")))
 	testImplementation(testFixtures(project(":spring-core")))
-	testFixturesImplementation(testFixtures(project(":spring-beans")))
-	testFixturesImplementation(testFixtures(project(":spring-core")))
 }
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -17,18 +17,23 @@
 package org.springframework.aop;

 /**
- * Filter that restricts matching of a pointcut or introduction to
- * a given set of target classes.
+ * Filter that restricts matching of a pointcut or introduction to a given set
+ * of target classes.
 *
- * <p>Can be used as part of a {@link Pointcut} or for the entire
- * targeting of an {@link IntroductionAdvisor}.
+ * <p>Can be used as part of a {@link Pointcut} or for the entire targeting of
+ * an {@link IntroductionAdvisor}.
 *
- * <p>Concrete implementations of this interface typically should provide proper
- * implementations of {@link Object#equals(Object)} and {@link Object#hashCode()}
- * in order to allow the filter to be used in caching scenarios &mdash; for
- * example, in proxies generated by CGLIB.
+ * <p><strong>WARNING</strong>: Concrete implementations of this interface must
+ * provide proper implementations of {@link Object#equals(Object)},
+ * {@link Object#hashCode()}, and {@link Object#toString()} in order to allow the
+ * filter to be used in caching scenarios &mdash; for example, in proxies generated
+ * by CGLIB. As of Spring Framework 6.0.13, the {@code toString()} implementation
+ * must generate a unique string representation that aligns with the logic used
+ * to implement {@code equals()}. See concrete implementations of this interface
+ * within the framework for examples.
 *
 * @author Rod Johnson
+ * @author Sam Brannen
 * @see Pointcut
 * @see MethodMatcher
 */
@@ -44,7 +49,7 @@ public interface ClassFilter {


 	/**
-	 * Canonical instance of a ClassFilter that matches all classes.
+	 * Canonical instance of a {@code ClassFilter} that matches all classes.
 	 */
 	ClassFilter TRUE = TrueClassFilter.INSTANCE;

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -21,31 +21,37 @@ import java.lang.reflect.Method;
 /**
 * Part of a {@link Pointcut}: Checks whether the target method is eligible for advice.
 *
- * <p>A MethodMatcher may be evaluated <b>statically</b> or at <b>runtime</b> (dynamically).
- * Static matching involves method and (possibly) method attributes. Dynamic matching
- * also makes arguments for a particular call available, and any effects of running
- * previous advice applying to the joinpoint.
+ * <p>A {@code MethodMatcher} may be evaluated <b>statically</b> or at <b>runtime</b>
+ * (dynamically). Static matching involves a method and (possibly) method attributes.
+ * Dynamic matching also makes arguments for a particular call available, and any
+ * effects of running previous advice applying to the joinpoint.
 *
 * <p>If an implementation returns {@code false} from its {@link #isRuntime()}
 * method, evaluation can be performed statically, and the result will be the same
 * for all invocations of this method, whatever their arguments. This means that
 * if the {@link #isRuntime()} method returns {@code false}, the 3-arg
- * {@link #matches(java.lang.reflect.Method, Class, Object[])} method will never be invoked.
+ * {@link #matches(Method, Class, Object[])} method will never be invoked.
 *
 * <p>If an implementation returns {@code true} from its 2-arg
- * {@link #matches(java.lang.reflect.Method, Class)} method and its {@link #isRuntime()} method
- * returns {@code true}, the 3-arg {@link #matches(java.lang.reflect.Method, Class, Object[])}
- * method will be invoked <i>immediately before each potential execution of the related advice</i>,
- * to decide whether the advice should run. All previous advice, such as earlier interceptors
- * in an interceptor chain, will have run, so any state changes they have produced in
- * parameters or ThreadLocal state will be available at the time of evaluation.
+ * {@link #matches(Method, Class)} method and its {@link #isRuntime()} method
+ * returns {@code true}, the 3-arg {@link #matches(Method, Class, Object[])}
+ * method will be invoked <i>immediately before each potential execution of the
+ * related advice</i> to decide whether the advice should run. All previous advice,
+ * such as earlier interceptors in an interceptor chain, will have run, so any
+ * state changes they have produced in parameters or {@code ThreadLocal} state will
+ * be available at the time of evaluation.
 *
- * <p>Concrete implementations of this interface typically should provide proper
- * implementations of {@link Object#equals(Object)} and {@link Object#hashCode()}
- * in order to allow the matcher to be used in caching scenarios &mdash; for
- * example, in proxies generated by CGLIB.
+ * <p><strong>WARNING</strong>: Concrete implementations of this interface must
+ * provide proper implementations of {@link Object#equals(Object)},
+ * {@link Object#hashCode()}, and {@link Object#toString()} in order to allow the
+ * matcher to be used in caching scenarios &mdash; for example, in proxies generated
+ * by CGLIB. As of Spring Framework 6.0.13, the {@code toString()} implementation
+ * must generate a unique string representation that aligns with the logic used
+ * to implement {@code equals()}. See concrete implementations of this interface
+ * within the framework for examples.
 *
 * @author Rod Johnson
+ * @author Sam Brannen
 * @since 11.11.2003
 * @see Pointcut
 * @see ClassFilter
@@ -53,11 +59,10 @@ import java.lang.reflect.Method;
 public interface MethodMatcher {

 	/**
-	 * Perform static checking whether the given method matches.
-	 * <p>If this returns {@code false} or if the {@link #isRuntime()}
-	 * method returns {@code false}, no runtime check (i.e. no
-	 * {@link #matches(java.lang.reflect.Method, Class, Object[])} call)
-	 * will be made.
+	 * Perform static checking to determine whether the given method matches.
+	 * <p>If this method returns {@code false} or if {@link #isRuntime()}
+	 * returns {@code false}, no runtime check (i.e. no
+	 * {@link #matches(Method, Class, Object[])} call) will be made.
 	 * @param method the candidate method
 	 * @param targetClass the target class
 	 * @return whether this method matches statically
@@ -65,36 +70,35 @@ public interface MethodMatcher {
 	boolean matches(Method method, Class<?> targetClass);

 	/**
-	 * Is this MethodMatcher dynamic, that is, must a final call be made on the
-	 * {@link #matches(java.lang.reflect.Method, Class, Object[])} method at
-	 * runtime even if the 2-arg matches method returns {@code true}?
+	 * Is this {@code MethodMatcher} dynamic, that is, must a final check be made
+	 * via the {@link #matches(Method, Class, Object[])} method at runtime even
+	 * if {@link #matches(Method, Class)} returns {@code true}?
 	 * <p>Can be invoked when an AOP proxy is created, and need not be invoked
-	 * again before each method invocation,
-	 * @return whether a runtime match via the 3-arg
-	 * {@link #matches(java.lang.reflect.Method, Class, Object[])} method
+	 * again before each method invocation.
+	 * @return whether a runtime match via {@link #matches(Method, Class, Object[])}
 	 * is required if static matching passed
 	 */
 	boolean isRuntime();

 	/**
-	 * Check whether there a runtime (dynamic) match for this method,
-	 * which must have matched statically.
-	 * <p>This method is invoked only if the 2-arg matches method returns
-	 * {@code true} for the given method and target class, and if the
-	 * {@link #isRuntime()} method returns {@code true}. Invoked
-	 * immediately before potential running of the advice, after any
+	 * Check whether there is a runtime (dynamic) match for this method, which
+	 * must have matched statically.
+	 * <p>This method is invoked only if {@link #matches(Method, Class)} returns
+	 * {@code true} for the given method and target class, and if
+	 * {@link #isRuntime()} returns {@code true}.
+	 * <p>Invoked immediately before potential running of the advice, after any
 	 * advice earlier in the advice chain has run.
 	 * @param method the candidate method
 	 * @param targetClass the target class
 	 * @param args arguments to the method
 	 * @return whether there's a runtime match
-	 * @see MethodMatcher#matches(Method, Class)
+	 * @see #matches(Method, Class)
 	 */
 	boolean matches(Method method, Class<?> targetClass, Object... args);


 	/**
-	 * Canonical instance that matches all methods.
+	 * Canonical instance of a {@code MethodMatcher} that matches all methods.
 	 */
 	MethodMatcher TRUE = TrueMethodMatcher.INSTANCE;

@@ -714,13 +714,8 @@ public abstract class AbstractAspectJAdvice implements Advice, AspectJPrecedence

 		@Override
 		public boolean equals(@Nullable Object other) {
-			if (this == other) {
-				return true;
-			}
-			if (!(other instanceof AdviceExcludingMethodMatcher otherMm)) {
-				return false;
-			}
-			return this.adviceMethod.equals(otherMm.adviceMethod);
+			return (this == other || (other instanceof AdviceExcludingMethodMatcher that &&
+					this.adviceMethod.equals(that.adviceMethod)));
 		}

 		@Override
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -243,8 +243,8 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut

 	/**
 	 * If a pointcut expression has been specified in XML, the user cannot
-	 * write {@code and} as "&&" (though &amp;&amp; will work).
-	 * We also allow {@code and} between two pointcut sub-expressions.
+	 * write "and" as "&&" (though {@code &amp;&amp;} will work).
+	 * <p>We also allow "and" between two pointcut sub-expressions.
 	 * <p>This method converts back to {@code &&} for the AspectJ pointcut parser.
 	 */
 	private String replaceBooleanOperators(String pcExpr) {
@@ -333,12 +333,12 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		Object targetObject = null;
 		Object thisObject = null;
 		try {
-			MethodInvocation mi = ExposeInvocationInterceptor.currentInvocation();
-			targetObject = mi.getThis();
-			if (!(mi instanceof ProxyMethodInvocation _pmi)) {
-				throw new IllegalStateException("MethodInvocation is not a Spring ProxyMethodInvocation: " + mi);
+			MethodInvocation curr = ExposeInvocationInterceptor.currentInvocation();
+			targetObject = curr.getThis();
+			if (!(curr instanceof ProxyMethodInvocation currPmi)) {
+				throw new IllegalStateException("MethodInvocation is not a Spring ProxyMethodInvocation: " + curr);
 			}
-			pmi = _pmi;
+			pmi = currPmi;
 			thisObject = pmi.getProxy();
 		}
 		catch (IllegalStateException ex) {
@@ -516,21 +516,16 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut

 	@Override
 	public boolean equals(@Nullable Object other) {
-		if (this == other) {
-			return true;
-		}
-		if (!(other instanceof AspectJExpressionPointcut otherPc)) {
-			return false;
-		}
-		return ObjectUtils.nullSafeEquals(this.getExpression(), otherPc.getExpression()) &&
-				ObjectUtils.nullSafeEquals(this.pointcutDeclarationScope, otherPc.pointcutDeclarationScope) &&
-				ObjectUtils.nullSafeEquals(this.pointcutParameterNames, otherPc.pointcutParameterNames) &&
-				ObjectUtils.nullSafeEquals(this.pointcutParameterTypes, otherPc.pointcutParameterTypes);
+		return (this == other || (other instanceof AspectJExpressionPointcut that &&
+				ObjectUtils.nullSafeEquals(getExpression(), that.getExpression()) &&
+				ObjectUtils.nullSafeEquals(this.pointcutDeclarationScope, that.pointcutDeclarationScope) &&
+				ObjectUtils.nullSafeEquals(this.pointcutParameterNames, that.pointcutParameterNames) &&
+				ObjectUtils.nullSafeEquals(this.pointcutParameterTypes, that.pointcutParameterTypes)));
 	}

 	@Override
 	public int hashCode() {
-		int hashCode = ObjectUtils.nullSafeHashCode(this.getExpression());
+		int hashCode = ObjectUtils.nullSafeHashCode(getExpression());
 		hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode(this.pointcutDeclarationScope);
 		hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode(this.pointcutParameterNames);
 		hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode(this.pointcutParameterTypes);
@@ -25,7 +25,7 @@ import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;

 /**
- * AspectJPointcutAdvisor that adapts an {@link AbstractAspectJAdvice}
+ * AspectJ {@link PointcutAdvisor} that adapts an {@link AbstractAspectJAdvice}
 * to the {@link org.springframework.aop.PointcutAdvisor} interface.
 *
 * @author Adrian Colyer
@@ -89,13 +89,8 @@ public class AspectJPointcutAdvisor implements PointcutAdvisor, Ordered {

 	@Override
 	public boolean equals(@Nullable Object other) {
-		if (this == other) {
-			return true;
-		}
-		if (!(other instanceof AspectJPointcutAdvisor otherAdvisor)) {
-			return false;
-		}
-		return this.advice.equals(otherAdvisor.advice);
+		return (this == other || (other instanceof AspectJPointcutAdvisor that &&
+				this.advice.equals(that.advice)));
 	}

 	@Override
@@ -117,8 +117,8 @@ public class TypePatternClassFilter implements ClassFilter {
 	}

 	@Override
-	public boolean equals(@Nullable Object obj) {
-		return (this == obj || (obj instanceof TypePatternClassFilter that &&
+	public boolean equals(@Nullable Object other) {
+		return (this == other || (other instanceof TypePatternClassFilter that &&
 				ObjectUtils.nullSafeEquals(this.typePattern, that.typePattern)));
 	}

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2002-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.aop.aspectj.annotation;
+
+import java.util.List;
+
+import org.springframework.aop.Advisor;
+import org.springframework.aop.aspectj.AbstractAspectJAdvice;
+import org.springframework.aot.generate.GenerationContext;
+import org.springframework.aot.hint.ExecutableMode;
+import org.springframework.aot.hint.ReflectionHints;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationAotContribution;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationAotProcessor;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationCode;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.lang.Nullable;
+import org.springframework.util.ClassUtils;
+
+/**
+ * {@link BeanFactoryInitializationAotProcessor} implementation responsible for registering
+ * hints for AOP advices.
+ *
+ * @author Sebastien Deleuze
+ * @author Stephane Nicoll
+ * @since 6.0.11
+ */
+class AspectJBeanFactoryInitializationAotProcessor implements BeanFactoryInitializationAotProcessor {
+
+	private static final boolean aspectJPresent = ClassUtils.isPresent("org.aspectj.lang.annotation.Pointcut",
+			AspectJBeanFactoryInitializationAotProcessor.class.getClassLoader());
+
+
+	@Override
+	@Nullable
+	public BeanFactoryInitializationAotContribution processAheadOfTime(ConfigurableListableBeanFactory beanFactory) {
+		if (aspectJPresent) {
+			return AspectDelegate.processAheadOfTime(beanFactory);
+		}
+		return null;
+	}
+
+
+	/**
+	 * Inner class to avoid a hard dependency on AspectJ at runtime.
+	 */
+	private static class AspectDelegate {
+
+		@Nullable
+		private static AspectContribution processAheadOfTime(ConfigurableListableBeanFactory beanFactory) {
+			BeanFactoryAspectJAdvisorsBuilder builder = new BeanFactoryAspectJAdvisorsBuilder(beanFactory);
+			List<Advisor> advisors = builder.buildAspectJAdvisors();
+			return (advisors.isEmpty() ? null : new AspectContribution(advisors));
+		}
+	}
+
+
+	private static class AspectContribution implements BeanFactoryInitializationAotContribution {
+
+		private final List<Advisor> advisors;
+
+		public AspectContribution(List<Advisor> advisors) {
+			this.advisors = advisors;
+		}
+
+		@Override
+		public void applyTo(GenerationContext generationContext, BeanFactoryInitializationCode beanFactoryInitializationCode) {
+			ReflectionHints reflectionHints = generationContext.getRuntimeHints().reflection();
+			for (Advisor advisor : this.advisors) {
+				if (advisor.getAdvice() instanceof AbstractAspectJAdvice aspectJAdvice) {
+					reflectionHints.registerMethod(aspectJAdvice.getAspectJAdviceMethod(), ExecutableMode.INVOKE);
+				}
+			}
+		}
+	}
+
+}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@ import org.springframework.aop.aspectj.annotation.AbstractAspectJAdvisorFactory.
 import org.springframework.aop.support.DynamicMethodMatcherPointcut;
 import org.springframework.aop.support.Pointcuts;
 import org.springframework.lang.Nullable;
+import org.springframework.util.ObjectUtils;

 /**
 * Internal implementation of AspectJPointcutAdvisor.
@@ -40,6 +41,7 @@ import org.springframework.lang.Nullable;
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
+ * @author Sam Brannen
 * @since 2.0
 */
@SuppressWarnings("serial")
@@ -291,12 +293,33 @@ final class InstantiationModelAwarePointcutAdvisorImpl
 		@Override
 		public boolean matches(Method method, Class<?> targetClass, Object... args) {
 			// This can match only on declared pointcut.
-			return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass));
+			return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass, args));
 		}

 		private boolean isAspectMaterialized() {
 			return (this.aspectInstanceFactory == null || this.aspectInstanceFactory.isMaterialized());
 		}
+
+		@Override
+		public boolean equals(@Nullable Object other) {
+			// For equivalence, we only need to compare the preInstantiationPointcut fields since
+			// they include the declaredPointcut fields. In addition, we should not compare the
+			// aspectInstanceFactory fields since LazySingletonAspectInstanceFactoryDecorator does
+			// not implement equals().
+			return (this == other || (other instanceof PerTargetInstantiationModelPointcut that &&
+					ObjectUtils.nullSafeEquals(this.preInstantiationPointcut, that.preInstantiationPointcut)));
+		}
+
+		@Override
+		public int hashCode() {
+			return ObjectUtils.nullSafeHashCode(this.declaredPointcut.getExpression());
+		}
+
+		@Override
+		public String toString() {
+			return PerTargetInstantiationModelPointcut.class.getName() + ": " + this.declaredPointcut.getExpression();
+		}
+
 	}

 }
@@ -48,7 +48,8 @@ import org.springframework.util.ObjectUtils;

 /**
 * Base class for AOP proxy configuration managers.
- * These are not themselves AOP proxies, but subclasses of this class are
+ *
+ * <p>These are not themselves AOP proxies, but subclasses of this class are
 * normally factories from which AOP proxy instances are obtained directly.
 *
 * <p>This class frees subclasses of the housekeeping of Advices
@@ -56,10 +57,12 @@ import org.springframework.util.ObjectUtils;
 * methods, which are provided by subclasses.
 *
 * <p>This class is serializable; subclasses need not be.
- * This class is used to hold snapshots of proxies.
+ *
+ * <p>This class is used to hold snapshots of proxies.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
+ * @author Sam Brannen
 * @see org.springframework.aop.framework.AopProxy
 */
 public class AdvisedSupport extends ProxyConfig implements Advised {
@@ -99,6 +102,12 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	 */
 	private List<Advisor> advisors = new ArrayList<>();

+	/**
+	 * List of minimal {@link AdvisorKeyEntry} instances,
+	 * to be assigned to the {@link #advisors} field on reduction.
+	 * @since 6.0.10
+	 * @see #reduceToAdvisorKey
+	 */
 	private List<Advisor> advisorKey = this.advisors;


@@ -111,7 +120,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}

 	/**
-	 * Create a AdvisedSupport instance with the given parameters.
+	 * Create an {@code AdvisedSupport} instance with the given parameters.
 	 * @param interfaces the proxied interfaces
 	 */
 	public AdvisedSupport(Class<?>... interfaces) {
@@ -131,7 +140,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {

 	/**
 	 * Set the given object as target.
-	 * Will create a SingletonTargetSource for the object.
+	 * <p>Will create a SingletonTargetSource for the object.
 	 * @see #setTargetSource
 	 * @see org.springframework.aop.target.SingletonTargetSource
 	 */
@@ -506,9 +515,9 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}

 	/**
-	 * Copy the AOP configuration from the given AdvisedSupport object,
-	 * but allow substitution of a fresh TargetSource and a given interceptor chain.
-	 * @param other the AdvisedSupport object to take proxy configuration from
+	 * Copy the AOP configuration from the given {@link AdvisedSupport} object,
+	 * but allow substitution of a fresh {@link TargetSource} and a given interceptor chain.
+	 * @param other the {@code AdvisedSupport} object to take proxy configuration from
 	 * @param targetSource the new TargetSource
 	 * @param advisors the Advisors for the chain
 	 */
@@ -528,8 +537,8 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}

 	/**
-	 * Build a configuration-only copy of this AdvisedSupport,
-	 * replacing the TargetSource.
+	 * Build a configuration-only copy of this {@link AdvisedSupport},
+	 * replacing the {@link TargetSource}.
 	 */
 	AdvisedSupport getConfigurationOnlyCopy() {
 		AdvisedSupport copy = new AdvisedSupport(this.advisorChainFactory, this.methodCache);
@@ -554,18 +563,6 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}


-	//---------------------------------------------------------------------
-	// Serialization support
-	//---------------------------------------------------------------------
-
-	private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
-		// Rely on default serialization; just initialize state after deserialization.
-		ois.defaultReadObject();
-
-		// Initialize transient fields.
-		this.methodCache = new ConcurrentHashMap<>(32);
-	}
-
 	@Override
 	public String toProxyConfigString() {
 		return toString();
@@ -587,6 +584,19 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}


+	//---------------------------------------------------------------------
+	// Serialization support
+	//---------------------------------------------------------------------
+
+	private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
+		// Rely on default serialization; just initialize state after deserialization.
+		ois.defaultReadObject();
+
+		// Initialize transient fields.
+		this.methodCache = new ConcurrentHashMap<>(32);
+	}
+
+
 	/**
 	 * Simple wrapper class around a Method. Used as the key when
 	 * caching methods, for efficient equals and hashCode comparisons.
@@ -604,8 +614,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {

 		@Override
 		public boolean equals(@Nullable Object other) {
-			return (this == other || (other instanceof MethodCacheKey methodCacheKey &&
-					this.method == methodCacheKey.method));
+			return (this == other || (other instanceof MethodCacheKey that && this.method == that.method));
 		}

 		@Override
@@ -630,29 +639,33 @@ public class AdvisedSupport extends ProxyConfig implements Advised {


 	/**
-	 * Stub for an Advisor instance that is just needed for key purposes,
+	 * Stub for an {@link Advisor} instance that is just needed for key purposes,
 	 * allowing for efficient equals and hashCode comparisons against the
 	 * advice class and the pointcut.
 	 * @since 6.0.10
 	 * @see #getConfigurationOnlyCopy()
 	 * @see #getAdvisorKey()
 	 */
-	private static class AdvisorKeyEntry implements Advisor {
+	private static final class AdvisorKeyEntry implements Advisor {

 		private final Class<?> adviceType;

 		@Nullable
-		private String classFilterKey;
+		private final String classFilterKey;

 		@Nullable
-		private String methodMatcherKey;
+		private final String methodMatcherKey;

 		public AdvisorKeyEntry(Advisor advisor) {
 			this.adviceType = advisor.getAdvice().getClass();
 			if (advisor instanceof PointcutAdvisor pointcutAdvisor) {
 				Pointcut pointcut = pointcutAdvisor.getPointcut();
-				this.classFilterKey = ObjectUtils.identityToString(pointcut.getClassFilter());
-				this.methodMatcherKey = ObjectUtils.identityToString(pointcut.getMethodMatcher());
+				this.classFilterKey = pointcut.getClassFilter().toString();
+				this.methodMatcherKey = pointcut.getMethodMatcher().toString();
+			}
+			else {
+				this.classFilterKey = null;
+				this.methodMatcherKey = null;
 			}
 		}

@@ -663,10 +676,10 @@ public class AdvisedSupport extends ProxyConfig implements Advised {

 		@Override
 		public boolean equals(Object other) {
-			return (this == other || (other instanceof AdvisorKeyEntry otherEntry &&
-					this.adviceType == otherEntry.adviceType &&
-					ObjectUtils.nullSafeEquals(this.classFilterKey, otherEntry.classFilterKey) &&
-					ObjectUtils.nullSafeEquals(this.methodMatcherKey, otherEntry.methodMatcherKey)));
+			return (this == other || (other instanceof AdvisorKeyEntry that &&
+					this.adviceType == that.adviceType &&
+					ObjectUtils.nullSafeEquals(this.classFilterKey, that.classFilterKey) &&
+					ObjectUtils.nullSafeEquals(this.methodMatcherKey, that.methodMatcherKey)));
 		}

 		@Override
@@ -370,8 +370,8 @@ class CglibAopProxy implements AopProxy, Serializable {

 	@Override
 	public boolean equals(@Nullable Object other) {
-		return (this == other || (other instanceof CglibAopProxy cglibAopProxy &&
-				AopProxyUtils.equalsInProxy(this.advised, cglibAopProxy.advised)));
+		return (this == other || (other instanceof CglibAopProxy that &&
+				AopProxyUtils.equalsInProxy(this.advised, that.advised)));
 	}

 	@Override
@@ -597,15 +597,10 @@ class CglibAopProxy implements AopProxy, Serializable {
 			}
 			if (other instanceof Factory factory) {
 				Callback callback = factory.getCallback(INVOKE_EQUALS);
-				if (!(callback instanceof EqualsInterceptor equalsInterceptor)) {
-					return false;
-				}
-				AdvisedSupport otherAdvised = equalsInterceptor.advised;
-				return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
-			}
-			else {
-				return false;
+				return (callback instanceof EqualsInterceptor that &&
+						AopProxyUtils.equalsInProxy(this.advised, that.advised));
 			}
+			return false;
 		}
 	}

@@ -920,20 +915,14 @@ class CglibAopProxy implements AopProxy, Serializable {

 		@Override
 		public boolean equals(@Nullable Object other) {
-			if (this == other) {
-				return true;
-			}
-			if (!(other instanceof ProxyCallbackFilter otherCallbackFilter)) {
-				return false;
-			}
-			AdvisedSupport otherAdvised = otherCallbackFilter.advised;
-			return (this.advised.getAdvisorKey().equals(otherAdvised.getAdvisorKey()) &&
-					AopProxyUtils.equalsProxiedInterfaces(this.advised, otherAdvised) &&
-					ObjectUtils.nullSafeEquals(this.advised.getTargetClass(), otherAdvised.getTargetClass()) &&
-					this.advised.getTargetSource().isStatic() == otherAdvised.getTargetSource().isStatic() &&
-					this.advised.isFrozen() == otherAdvised.isFrozen() &&
-					this.advised.isExposeProxy() == otherAdvised.isExposeProxy() &&
-					this.advised.isOpaque() == otherAdvised.isOpaque());
+			return (this == other || (other instanceof ProxyCallbackFilter that &&
+					this.advised.getAdvisorKey().equals(that.advised.getAdvisorKey()) &&
+					AopProxyUtils.equalsProxiedInterfaces(this.advised, that.advised) &&
+					ObjectUtils.nullSafeEquals(this.advised.getTargetClass(), that.advised.getTargetClass()) &&
+					this.advised.getTargetSource().isStatic() == that.advised.getTargetSource().isStatic() &&
+					this.advised.isFrozen() == that.advised.isFrozen() &&
+					this.advised.isExposeProxy() == that.advised.isExposeProxy() &&
+					this.advised.isOpaque() == that.advised.isOpaque()));
 		}

 		@Override
@@ -265,18 +265,32 @@ public class ProxyFactoryBean extends ProxyCreatorSupport
 	 * Return the type of the proxy. Will check the singleton instance if
 	 * already created, else fall back to the proxy interface (in case of just
 	 * a single one), the target bean type, or the TargetSource's target class.
-	 * @see org.springframework.aop.TargetSource#getTargetClass
+	 * @see org.springframework.aop.framework.AopProxy#getProxyClass
 	 */
 	@Override
+	@Nullable
 	public Class<?> getObjectType() {
 		synchronized (this) {
 			if (this.singletonInstance != null) {
 				return this.singletonInstance.getClass();
 			}
 		}
-		// This might be incomplete since it potentially misses introduced interfaces
-		// from Advisors that will be lazily retrieved via setInterceptorNames.
-		return createAopProxy().getProxyClass(this.proxyClassLoader);
+		try {
+			// This might be incomplete since it potentially misses introduced interfaces
+			// from Advisors that will be lazily retrieved via setInterceptorNames.
+			return createAopProxy().getProxyClass(this.proxyClassLoader);
+		}
+		catch (AopConfigException ex) {
+			if (getTargetClass() == null) {
+				if (logger.isDebugEnabled()) {
+					logger.debug("Failed to determine early proxy class: " + ex.getMessage());
+				}
+				return null;
+			}
+			else {
+				throw ex;
+			}
+		}
 	}

 	@Override
@@ -58,6 +58,7 @@ import org.springframework.util.function.SingletonSupplier;
 * @author Juergen Hoeller
 * @author Stephane Nicoll
 * @author He Bo
+ * @author Sebastien Deleuze
 * @since 3.1.2
 */
 public abstract class AsyncExecutionAspectSupport implements BeanFactoryAware {
@@ -290,7 +291,7 @@ public abstract class AsyncExecutionAspectSupport implements BeanFactoryAware {
 		else if (Future.class.isAssignableFrom(returnType)) {
 			return executor.submit(task);
 		}
-		else if (void.class == returnType) {
+		else if (void.class == returnType || "kotlin.Unit".equals(returnType.getName())) {
 			executor.submit(task);
 			return null;
 		}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -186,10 +186,10 @@ public abstract class AopUtils {
 	 * this method resolves bridge methods in order to retrieve attributes from
 	 * the <i>original</i> method definition.
 	 * @param method the method to be invoked, which may come from an interface
-	 * @param targetClass the target class for the current invocation.
-	 * May be {@code null} or may not even implement the method.
+	 * @param targetClass the target class for the current invocation
+	 * (can be {@code null} or may not even implement the method)
 	 * @return the specific target method, or the original method if the
-	 * {@code targetClass} doesn't implement it or is {@code null}
+	 * {@code targetClass} does not implement it
 	 * @see org.springframework.util.ClassUtils#getMostSpecificMethod
 	 */
 	public static Method getMostSpecificMethod(Method method, @Nullable Class<?> targetClass) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -109,8 +109,8 @@ public abstract class ClassFilters {
 		}

 		@Override
-		public boolean equals(@Nullable Object obj) {
-			return (this == obj || (obj instanceof UnionClassFilter that &&
+		public boolean equals(@Nullable Object other) {
+			return (this == other || (other instanceof UnionClassFilter that &&
 					ObjectUtils.nullSafeEquals(this.filters, that.filters)));
 		}

@@ -123,7 +123,6 @@ public abstract class ClassFilters {
 		public String toString() {
 			return getClass().getName() + ": " + Arrays.toString(this.filters);
 		}
-
 	}


@@ -150,8 +149,8 @@ public abstract class ClassFilters {
 		}

 		@Override
-		public boolean equals(@Nullable Object obj) {
-			return (this == obj || (obj instanceof IntersectionClassFilter that &&
+		public boolean equals(@Nullable Object other) {
+			return (this == other || (other instanceof IntersectionClassFilter that &&
 					ObjectUtils.nullSafeEquals(this.filters, that.filters)));
 		}

@@ -164,7 +163,6 @@ public abstract class ClassFilters {
 		public String toString() {
 			return getClass().getName() + ": " + Arrays.toString(this.filters);
 		}
-
 	}

 }
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -100,8 +100,8 @@ public class NameMatchMethodPointcut extends StaticMethodMatcherPointcut impleme


 	@Override
-	public boolean equals(@Nullable Object obj) {
-		return (this == obj || (obj instanceof NameMatchMethodPointcut that &&
+	public boolean equals(@Nullable Object other) {
+		return (this == other || (other instanceof NameMatchMethodPointcut that &&
 				this.mappedNames.equals(that.mappedNames)));
 	}

--- a/Show More
+++ b/Show More