Release v7.0.0

2026-06-08 17:33:33 +00:00 · 2025-11-13 11:06:28 +01:00
947 changed files with 7322 additions and 21476 deletions
@@ -1,13 +1,6 @@
 changelog:
  repository: spring-projects/spring-framework
  sections:
-    - title: ":warning: Attention Required"
-      labels:
-        - "for: upgrade-attention"
-      summary:
-        mode: "member-comment"
-        config:
-          prefix: "Attention Required:"
    - title: ":star: New Features"
      labels:
        - "type: enhancement"
@@ -24,7 +24,7 @@ runs:
  using: composite
  steps:
    - name: Set Up Java
-      uses: actions/setup-java@v5
+      uses: actions/setup-java@v4
      with:
        distribution: ${{ inputs.java-early-access == 'true' && 'temurin' || (inputs.java-distribution || 'liberica') }}
        java-version: |
@@ -32,7 +32,7 @@ runs:
          ${{ inputs.java-toolchain == 'true' && '17' || '' }}
          25
    - name: Set Up Gradle
-      uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # v5.0.0
+      uses: gradle/actions/setup-gradle@ac638b010cf58a27ee6c972d7336334ccaf61c96 # v4.4.1
      with:
        cache-read-only: false
        develocity-access-key: ${{ inputs.develocity-access-key }}
@@ -17,14 +17,14 @@ runs:
  using: composite
  steps:
    - name: Set Up JFrog CLI
-      uses: jfrog/setup-jfrog-cli@5b06f730cc5a6f55d78b30753f8583454b08c0aa # v4.8.1
+      uses: jfrog/setup-jfrog-cli@f748a0599171a192a2668afee8d0497f7c1069df # v4.5.6
      env:
        JF_ENV_SPRING: ${{ inputs.jfrog-cli-config-token }}
    - name: Download Release Artifacts
      shell: bash
      run: jf rt download --spec ${{ format('{0}/artifacts.spec', github.action_path) }} --spec-vars 'buildName=${{ format('spring-framework-{0}', inputs.spring-framework-version) }};buildNumber=${{ github.run_number }}'
    - name: Sync
-      uses: spring-io/central-publish-action@0c03960e9b16fdfe70e2443e1d5393cbc3a35622 # v0.3.0
+      uses: spring-io/central-publish-action@0cdd90d12e6876341e82860d951e1bcddc1e51b6 # v0.2.0
      with:
        token: ${{ inputs.central-token-password }}
        token-name: ${{ inputs.central-token-username }}
@@ -18,9 +18,9 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check out code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Set up Java
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v4
        with:
          distribution: 'liberica'
          java-version: 17
@@ -13,7 +13,7 @@ jobs:
    timeout-minutes: 60
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Build and Publish
        id: build-and-publish
        uses: ./.github/actions/build
@@ -21,7 +21,7 @@ jobs:
          develocity-access-key: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
          publish: true
      - name: Deploy
-        uses: spring-io/artifactory-deploy-action@926d7f7cc810569395346bf3a4d91b380b3e355b # v0.0.4
+        uses: spring-io/artifactory-deploy-action@dc1913008c0599f0c4b1fdafb6ff3c502b3565ea # v0.0.2
        with:
          artifact-properties: |
            /**/framework-api-*.zip::zip.name=spring-framework,zip.deployed=false
@@ -10,7 +10,7 @@ jobs:
    timeout-minutes: 60
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Build
        id: build
        uses: ./.github/actions/build
@@ -19,7 +19,7 @@ jobs:
        uses: ./.github/actions/print-jvm-thread-dumps
      - name: Upload Build Reports
        if: failure()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v4
        with:
          name: build-reports
          path: '**/build/reports/'
@@ -35,7 +35,7 @@ jobs:
          git config --global core.longPaths true
          Stop-Service -name Docker
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Build
        id: build
        uses: ./.github/actions/build
@@ -19,7 +19,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
    - name: Check out code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v4
      with:
        fetch-depth: 1
        ref: docs-build
@@ -13,7 +13,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Build and Publish
        id: build-and-publish
        uses: ./.github/actions/build
@@ -21,7 +21,7 @@ jobs:
          develocity-access-key: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
          publish: true
      - name: Stage Release
-        uses: spring-io/artifactory-deploy-action@926d7f7cc810569395346bf3a4d91b380b3e355b # v0.0.4
+        uses: spring-io/artifactory-deploy-action@26bbe925a75f4f863e1e529e85be2d0093cac116 # v0.0.1
        with:
          artifact-properties: |
            /**/framework-api-*.zip::zip.name=spring-framework,zip.deployed=false
@@ -57,7 +57,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
      - name: Sync to Maven Central
        uses: ./.github/actions/sync-to-maven-central
        with:
@@ -73,7 +73,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Set up JFrog CLI
-        uses: jfrog/setup-jfrog-cli@5b06f730cc5a6f55d78b30753f8583454b08c0aa # v4.8.1
+        uses: jfrog/setup-jfrog-cli@dff217c085c17666e8849ebdbf29c8fe5e3995e6 # v4.5.2
        env:
          JF_ENV_SPRING: ${{ secrets.JF_ARTIFACTORY_SPRING }}
      - name: Promote build
@@ -86,7 +86,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
      - name: Create GitHub Release
        uses: ./.github/actions/create-github-release
        with:
@@ -12,7 +12,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
      - name: Build and Publish
        id: build-and-publish
        uses: ./.github/actions/build
@@ -20,7 +20,7 @@ jobs:
          develocity-access-key: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
          publish: true
      - name: Stage Release
-        uses: spring-io/artifactory-deploy-action@926d7f7cc810569395346bf3a4d91b380b3e355b # v0.0.4
+        uses: spring-io/artifactory-deploy-action@dc1913008c0599f0c4b1fdafb6ff3c502b3565ea # v0.0.2
        with:
          artifact-properties: |
            /**/framework-api-*.zip::zip.name=spring-framework,zip.deployed=false
@@ -56,7 +56,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
      - name: Sync to Maven Central
        uses: ./.github/actions/sync-to-maven-central
        with:
@@ -72,7 +72,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Set up JFrog CLI
-        uses: jfrog/setup-jfrog-cli@5b06f730cc5a6f55d78b30753f8583454b08c0aa # v4.8.1
+        uses: jfrog/setup-jfrog-cli@dff217c085c17666e8849ebdbf29c8fe5e3995e6 # v4.5.2
        env:
          JF_ENV_SPRING: ${{ secrets.JF_ARTIFACTORY_SPRING }}
      - name: Promote build
@@ -85,7 +85,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
      - name: Create GitHub Release
        uses: ./.github/actions/create-github-release
        with:
@@ -30,23 +30,23 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Release Verification Tests
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
        with:
          ref: 'v0.0.2'
          repository: spring-projects/spring-framework-release-verification
          token: ${{ secrets.token }}
      - name: Check Out Send Notification Action
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
        with:
          path: send-notification
          sparse-checkout: .github/actions/send-notification
      - name: Set Up Java
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v4
        with:
          distribution: 'liberica'
          java-version: 17
      - name: Set Up Gradle
-        uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # v5.0.0
+        uses: gradle/actions/setup-gradle@ac638b010cf58a27ee6c972d7336334ccaf61c96 # v4.4.1
        with:
          cache-read-only: false
      - name: Configure Gradle Properties
@@ -64,7 +64,7 @@ jobs:
        run: ./gradlew spring-framework-release-verification-tests:test
      - name: Upload Build Reports on Failure
        if: failure()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v4
        with:
          name: build-reports
          path: '**/build/reports/'
@@ -38,7 +38,7 @@ bin
 .springBeans
 spring-*/src/main/java/META-INF/MANIFEST.MF

-# IntelliJ IDEA artifacts and output dirs
+# IDEA artifacts and output dirs
 *.iml
 *.ipr
 *.iws
@@ -120,7 +120,7 @@ source code into your IDE.
 The wiki pages
 [Code Style](https://github.com/spring-projects/spring-framework/wiki/Code-Style) and
 [IntelliJ IDEA Editor Settings](https://github.com/spring-projects/spring-framework/wiki/IntelliJ-IDEA-Editor-Settings)
-define the source file coding standards we use along with some IntelliJ editor settings we customize.
+define the source file coding standards we use along with some IDEA editor settings we customize.

 ### Reference Docs

@@ -6,7 +6,7 @@ plugins {
 	id 'com.github.bjornvester.xjc' version '1.8.2' apply false
 	id 'com.gradleup.shadow' version "9.2.2" apply false
 	id 'me.champeau.jmh' version '0.7.2' apply false
-	id 'io.spring.nullability' version '0.0.11' apply false
+	id 'io.spring.nullability' version '0.0.8' apply false
 }

 ext {
@@ -70,14 +70,13 @@ configure([rootProject] + javaProjects) { project ->
 	ext.javadocLinks = [
 			"https://docs.oracle.com/en/java/javase/17/docs/api/",
 			//"https://jakarta.ee/specifications/platform/11/apidocs/",
-			"https://docs.hibernate.org/orm/7.2/javadocs/",
+			"https://docs.hibernate.org/orm/5.6/javadocs/",
 			"https://www.quartz-scheduler.org/api/2.3.0/",
-			"https://hc.apache.org/httpcomponents-client-5.6.x/current/httpclient5/apidocs/",
-			"https://projectreactor.io/docs/core/release/api/",
+			"https://hc.apache.org/httpcomponents-client-5.5.x/current/httpclient5/apidocs/",
 			"https://projectreactor.io/docs/test/release/api/",
 			"https://junit.org/junit4/javadoc/4.13.2/",
-			"https://docs.junit.org/6.0.2/api/",
-			"https://www.reactive-streams.org/reactive-streams-1.0.4-javadoc/",
+			"https://docs.junit.org/6.0.1/api/",
+			"https://www.reactive-streams.org/reactive-streams-1.0.3-javadoc/",
 			"https://r2dbc.io/spec/1.0.0.RELEASE/api/",
 			"https://jspecify.dev/docs/api/"
 	] as String[]
@@ -50,7 +50,7 @@ public class CheckstyleConventions {
 			project.getPlugins().apply(CheckstylePlugin.class);
 			project.getTasks().withType(Checkstyle.class).forEach(checkstyle -> checkstyle.getMaxHeapSize().set("1g"));
 			CheckstyleExtension checkstyle = project.getExtensions().getByType(CheckstyleExtension.class);
-			checkstyle.setToolVersion("13.2.0");
+			checkstyle.setToolVersion("12.1.2");
 			checkstyle.getConfigDirectory().set(project.getRootProject().file("src/checkstyle"));
 			String version = SpringJavaFormatPlugin.class.getPackage().getImplementationVersion();
 			DependencySet checkstyleDependencies = project.getConfigurations().getByName("checkstyle").getDependencies();
@@ -49,6 +49,7 @@ import static org.springframework.build.architecture.ArchitectureRules.classesSh
 import static org.springframework.build.architecture.ArchitectureRules.javaClassesShouldNotImportKotlinAnnotations;
 import static org.springframework.build.architecture.ArchitectureRules.noClassesShouldCallStringToLowerCaseWithoutLocale;
 import static org.springframework.build.architecture.ArchitectureRules.noClassesShouldCallStringToUpperCaseWithoutLocale;
+import static org.springframework.build.architecture.ArchitectureRules.packageInfoShouldBeNullMarked;

 /**
 * {@link Task} that checks for architecture problems.
@@ -63,7 +64,8 @@ public abstract class ArchitectureCheck extends DefaultTask {
 	public ArchitectureCheck() {
 		getOutputDirectory().convention(getProject().getLayout().getBuildDirectory().dir(getName()));
 		getProhibitObjectsRequireNonNull().convention(true);
-		getRules().addAll(classesShouldNotImportForbiddenTypes(),
+		getRules().addAll(packageInfoShouldBeNullMarked(),
+				classesShouldNotImportForbiddenTypes(),
 				javaClassesShouldNotImportKotlinAnnotations(),
 				allPackagesShouldBeFreeOfTangles(),
 				noClassesShouldCallStringToLowerCaseWithoutLocale(),
@@ -46,6 +46,13 @@ abstract class ArchitectureRules {
 				.because("String.toUpperCase(Locale.ROOT) should be used instead");
 	}

+	static ArchRule packageInfoShouldBeNullMarked() {
+		return ArchRuleDefinition.classes()
+				.that().haveSimpleName("package-info")
+				.should().beAnnotatedWith("org.jspecify.annotations.NullMarked")
+				.allowEmptyShould(true);
+	}
+
 	static ArchRule classesShouldNotImportForbiddenTypes() {
 		return ArchRuleDefinition.noClasses()
 				.should().dependOnClassesThat()
@@ -18,7 +18,6 @@ package org.springframework.build.multirelease;

 import javax.inject.Inject;

-import org.gradle.api.JavaVersion;
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
 import org.gradle.api.artifacts.ConfigurationContainer;
@@ -65,12 +64,10 @@ public class MultiReleaseJarPlugin implements Plugin<Project> {
 				dependencies,
 				objects);

-		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_25)) {
-			TaskProvider<MultiReleaseJarValidateTask> validateJarTask = tasks.register(VALIDATE_JAR_TASK_NAME, MultiReleaseJarValidateTask.class, (task) -> {
-				task.getJar().set(tasks.named("jar", Jar.class).flatMap(AbstractArchiveTask::getArchiveFile));
-				task.getJavaLauncher().set(task.getJavaToolchainService().launcherFor(spec -> spec.getLanguageVersion().set(JavaLanguageVersion.of(25))));
-			});
-			tasks.named("check", task -> task.dependsOn(validateJarTask));
-		}
+		TaskProvider<MultiReleaseJarValidateTask> validateJarTask = tasks.register(VALIDATE_JAR_TASK_NAME, MultiReleaseJarValidateTask.class, (task) -> {
+			task.getJar().set(tasks.named("jar", Jar.class).flatMap(AbstractArchiveTask::getArchiveFile));
+			task.getJavaLauncher().set(task.getJavaToolchainService().launcherFor(spec -> spec.getLanguageVersion().set(JavaLanguageVersion.of(25))));
+		});
+		tasks.named("check", task -> task.dependsOn(validateJarTask));
 	}
 }
@@ -78,7 +78,7 @@ public class ShadowSource extends DefaultTask {
 	}

 	@OutputDirectory
-	public DirectoryProperty getOutputDirectory() {
+	DirectoryProperty getOutputDirectory() {
 		return this.outputDirectory;
 	}

@@ -29,8 +29,6 @@ import org.gradle.testkit.runner.GradleRunner;
 import org.gradle.testkit.runner.UnexpectedBuildFailure;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.condition.DisabledForJreRange;
-import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.api.io.TempDir;

 import static org.assertj.core.api.Assertions.assertThat;
@@ -45,13 +43,10 @@ public class MultiReleaseJarPluginTests {

 	private File buildFile;

-	private File propertiesFile;
-
 	@BeforeEach
 	void setup(@TempDir File projectDir) {
 		this.projectDir = projectDir;
 		this.buildFile = new File(this.projectDir, "build.gradle");
-		this.propertiesFile = new File(this.projectDir, "gradle.properties");
 	}

 	@Test
@@ -124,7 +119,6 @@ public class MultiReleaseJarPluginTests {
 	}

 	@Test
-	@DisabledForJreRange(max = JRE.JAVA_24, disabledReason = "'jar --validate' is available as of Java 25")
 	void validateJar() throws IOException {
 		writeBuildFile("""
 				plugins {
@@ -137,9 +131,6 @@ public class MultiReleaseJarPluginTests {
 				}
 				multiRelease { releaseVersions 17 }
 				""");
-		writeGradleProperties("""
-				org.gradle.jvmargs=-Duser.language=en
-				""");
 		writeClass("src/main/java17", "Main.java", """
 				public class Main {
 				
@@ -161,12 +152,6 @@ public class MultiReleaseJarPluginTests {
 		}
 	}

-	private void writeGradleProperties(String properties) throws IOException {
-		try (PrintWriter out = new PrintWriter(new FileWriter(this.propertiesFile))) {
-			out.print(properties);
-		}
-	}
-
 	private void writeClass(String path, String fileName, String fileContent) throws IOException {
 		Path folder = this.projectDir.toPath().resolve(path);
 		Files.createDirectories(folder);
@@ -20,7 +20,6 @@ dependencies {
 	}
 }

-def springAspectsOutput = project(":spring-aspects").sourceSets.main.output
 javadoc {
 	javadocTool.set(javaToolchains.javadocToolFor({
 		languageVersion = JavaLanguageVersion.of(25)
@@ -50,7 +49,7 @@ javadoc {
 	doFirst {
 		classpath += files(
 				// ensure the javadoc process can resolve types compiled from .aj sources
-                springAspectsOutput
+				project(":spring-aspects").sourceSets.main.output
 		)
 		classpath += files(moduleProjects.collect { it.sourceSets.main.compileClasspath })
 	}
@@ -13,9 +13,7 @@ content:
  - url: https://github.com/spring-projects/spring-framework
    # Refname matching:
    # https://docs.antora.org/antora/latest/playbook/content-refname-matching/
-    # branches: We include snapshots for main, 6.2.x, and 7.0.x to 9.*.x.
-    branches: ['main', '6.2.x', '{7..9}.+({0..9}).x']
-    # tags: We effectively include all releases from 6.0.9 to 9.*.*.
+    branches: ['main', '{6..9}.+({1..9}).x']
    tags: ['v{6..9}.+({0..9}).+({0..9})?(-{RC,M}*)', '!(v6.0.{0..8})', '!(v6.0.0-{RC,M}{0..9})']
    start_path: framework-docs
 asciidoc:
@@ -38,4 +36,4 @@ runtime:
    failure_level: warn
 ui:
  bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.25/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.19/ui-bundle.zip
@@ -70,7 +70,7 @@ dependencies {
 	implementation("com.github.ben-manes.caffeine:caffeine")
 	implementation("com.mchange:c3p0:0.9.5.5")
 	implementation("com.oracle.database.jdbc:ojdbc11")
-	implementation("io.micrometer:context-propagation")
+    implementation("io.micrometer:context-propagation")
 	implementation("io.projectreactor.netty:reactor-netty-http")
 	implementation("jakarta.jms:jakarta.jms-api")
 	implementation("jakarta.servlet:jakarta.servlet-api")
@@ -80,14 +80,12 @@ dependencies {
 	implementation("javax.cache:cache-api")
 	implementation("org.apache.activemq:activemq-ra:6.1.2")
 	implementation("org.apache.commons:commons-dbcp2:2.11.0")
-	implementation("org.apache.groovy:groovy-templates")
 	implementation("org.aspectj:aspectjweaver")
 	implementation("org.assertj:assertj-core")
 	implementation("org.eclipse.jetty.websocket:jetty-websocket-jetty-api")
-	implementation("org.freemarker:freemarker")
 	implementation("org.jetbrains.kotlin:kotlin-stdlib")
-	implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core")
-	implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
 	implementation("org.junit.jupiter:junit-jupiter-api")
 	implementation("tools.jackson.core:jackson-databind")
 	implementation("tools.jackson.dataformat:jackson-dataformat-xml")
@@ -17,7 +17,6 @@
   class="st5"
   id="svg5499"
   version="1.1"
-   font-family="Helvetica, Arial, sans-serif"
   inkscape:version="0.91 r13725"
   sodipodi:docname="mvc-splitted-contexts.svg"
   style="font-size:12px;overflow:visible;color-interpolation-filters:sRGB;fill:none;fill-rule:evenodd;stroke-linecap:square;stroke-miterlimit:3"
@@ -37,7 +36,7 @@
       inkscape:stockid="Arrow2Mend"><path
         transform="scale(0.6) rotate(180) translate(0,0)"
         d="M 8.7185878,4.0337352 L -2.2072895,0.016013256 L 8.7185884,-4.0017078 C 6.9730900,-1.6296469 6.9831476,1.6157441 8.7185878,4.0337352 z "
-         style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round;stroke:#333333;stroke-opacity:1;fill:#333333;fill-opacity:1"
+         style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round;stroke:#000000;stroke-opacity:1;fill:#000000;fill-opacity:1"
         id="path9164" /></marker><marker
       inkscape:isstock="true"
       style="overflow:visible;"
@@ -48,7 +47,7 @@
       inkscape:stockid="Arrow2Mend"><path
         transform="scale(0.6) rotate(180) translate(0,0)"
         d="M 8.7185878,4.0337352 L -2.2072895,0.016013256 L 8.7185884,-4.0017078 C 6.9730900,-1.6296469 6.9831476,1.6157441 8.7185878,4.0337352 z "
-         style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round;stroke:#333333;stroke-opacity:1;fill:#333333;fill-opacity:1"
+         style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round;stroke:#000000;stroke-opacity:1;fill:#000000;fill-opacity:1"
         id="path8836" /></marker><marker
       inkscape:isstock="true"
       style="overflow:visible;"
@@ -59,7 +58,7 @@
       inkscape:stockid="Arrow2Mend"><path
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@@ -261,6 +261,7 @@
 **** xref:web/websocket/stomp/configuration-performance.adoc[]
 **** xref:web/websocket/stomp/stats.adoc[]
 **** xref:web/websocket/stomp/testing.adoc[]
+** xref:web/integration.adoc[]
 * xref:web-reactive.adoc[]
 ** xref:web/webflux.adoc[]
 *** xref:web/webflux/new-framework.adoc[]
@@ -343,7 +344,6 @@
 **** xref:testing/testcontext-framework/ctx-management/web.adoc[]
 **** xref:testing/testcontext-framework/ctx-management/web-mocks.adoc[]
 **** xref:testing/testcontext-framework/ctx-management/caching.adoc[]
-**** xref:testing/testcontext-framework/ctx-management/context-pausing.adoc[]
 **** xref:testing/testcontext-framework/ctx-management/failure-threshold.adoc[]
 **** xref:testing/testcontext-framework/ctx-management/hierarchies.adoc[]
 *** xref:testing/testcontext-framework/fixture-di.adoc[]
@@ -124,10 +124,6 @@ on a test class. See xref:testing/annotations/integration-junit-jupiter.adoc#int
 | The maximum size of the context cache in the _Spring TestContext Framework_. See
 xref:testing/testcontext-framework/ctx-management/caching.adoc[Context Caching].

-| `spring.test.context.cache.pause`
-| The pause mode for the context cache in the _Spring TestContext Framework_. See
-xref:testing/testcontext-framework/ctx-management/context-pausing.adoc[Context Pausing].
-
 | `spring.test.context.failure.threshold`
 | The failure threshold for errors encountered while attempting to load an `ApplicationContext`
 in the _Spring TestContext Framework_. See
@@ -727,7 +727,7 @@ of determining parameter names, an exception will be thrown.
  parameter names. This discoverer is only used if such APIs are present on the classpath.
 `StandardReflectionParameterNameDiscoverer` :: Uses the standard `java.lang.reflect.Parameter`
  API to determine parameter names. Requires that code be compiled with the `-parameters`
-  flag for `javac`. Recommended approach.
+  flag for `javac`. Recommended approach on Java 8+.
 `AspectJAdviceParameterNameDiscoverer` :: Deduces parameter names from the pointcut
  expression, `returning`, and `throwing` clauses. See the
  {spring-framework-api}/aop/aspectj/AspectJAdviceParameterNameDiscoverer.html[javadoc]
@@ -104,7 +104,7 @@ Note that pointcut definitions are generally matched against any intercepted met
 If a pointcut is strictly meant to be public-only, even in a CGLIB proxy scenario with
 potential non-public interactions through proxies, it needs to be defined accordingly.

-If your interception needs to include method calls or even constructors within the target
+If your interception needs include method calls or even constructors within the target
 class, consider the use of Spring-driven xref:core/aop/using-aspectj.adoc#aop-aj-ltw[native AspectJ weaving] instead
 of Spring's proxy-based AOP framework. This constitutes a different mode of AOP usage
 with different characteristics, so be sure to make yourself familiar with weaving
@@ -19,6 +19,10 @@ its behavior changes.
 | Initialization of `SmartInitializingSingleton` beans.
 | `beanName` the name of the bean.

+| `spring.context.annotated-bean-reader.create`
+| Creation of the `AnnotatedBeanDefinitionReader`.
+|
+
 | `spring.context.base-packages.scan`
 | Scanning of base packages.
 | `packages` array of base packages for scanning.
@@ -50,8 +50,9 @@ XML configuration:

 The preceding XML is more succinct. However, typos are discovered at runtime rather than
 design time, unless you use an IDE (such as https://www.jetbrains.com/idea/[IntelliJ
-IDEA] or the {spring-site-tools}[Spring Tools]) that supports automatic property
-completion when you create bean definitions. Such IDE assistance is highly recommended.
+IDEA] or the {spring-site-tools}[Spring Tools for Eclipse])
+that supports automatic property completion when you create bean definitions. Such IDE
+assistance is highly recommended.

 You can also configure a `java.util.Properties` instance, as follows:

@@ -338,11 +338,11 @@ In the preceding scenario, using `@Autowired` works well and provides the desire
 modularity, but determining exactly where the autowired bean definitions are declared is
 still somewhat ambiguous. For example, as a developer looking at `ServiceConfig`, how do
 you know exactly where the `@Autowired AccountRepository` bean is declared? It is not
-explicit in the code, and this may be just fine. Note that the
-{spring-site-tools}[Spring Tools] IDE support provides tooling that can render graphs
-showing how everything is wired, which may be all you need. Also, your Java IDE can
-easily find all declarations and uses of the `AccountRepository` type and quickly show
-you the location of `@Bean` methods that return that type.
+explicit in the code, and this may be just fine. Remember that the
+{spring-site-tools}[Spring Tools for Eclipse] provides tooling that
+can render graphs showing how everything is wired, which may be all you need. Also,
+your Java IDE can easily find all declarations and uses of the `AccountRepository` type
+and quickly show you the location of `@Bean` methods that return that type.

 In cases where this ambiguity is not acceptable and you wish to have direct navigation
 from within your IDE from one `@Configuration` class to another, consider autowiring the
@@ -1,17 +1,16 @@
 [[beans-standard-annotations]]
-= Using JSR-330 Standard Annotations
+= Using JSR 330 Standard Annotations

-Spring offers support for JSR-330 standard _Dependency Injection_ annotations which are
-available in the `jakarta.inject` package. These annotations may optionally be used as
-alternatives to Spring annotations.
-
-To use them, you need to have the relevant jar in your classpath. For example, the
-`jakarta.inject` artifact is available in the standard Maven repository
-(`https://repo.maven.apache.org/maven2/jakarta/inject/jakarta.inject-api/2.0.0/`),
+Spring offers support for JSR-330 standard annotations (Dependency Injection). Those
+annotations are scanned in the same way as the Spring annotations. To use them, you need
+to have the relevant jars in your classpath.

 [NOTE]
 =====
-If you use Maven, you can add the following dependency to your `pom.xml` file.
+If you use Maven, the `jakarta.inject` artifact is available in the standard Maven
+repository (
+https://repo.maven.apache.org/maven2/jakarta/inject/jakarta.inject-api/2.0.0/[https://repo.maven.apache.org/maven2/jakarta/inject/jakarta.inject-api/2.0.0/]).
+You can add the following dependency to your file pom.xml:

 [source,xml,indent=0,subs="verbatim,quotes"]
 ----
@@ -27,14 +26,13 @@ If you use Maven, you can add the following dependency to your `pom.xml` file.
 [[beans-inject-named]]
 == Dependency Injection with `@Inject` and `@Named`

-Instead of using `@Autowired` for dependency injection, you may optionally choose to use
-`@jakarta.inject.Inject` as follows.
+Instead of `@Autowired`, you can use `@jakarta.inject.Inject` as follows:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject;

@@ -56,7 +54,7 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject

@@ -74,19 +72,17 @@ Kotlin::
 ----
 ======

-As with `@Autowired`, you can use `@Inject` at the field level, method level, and
-constructor-argument level.
-
-Furthermore, as an alternative to Spring's `ObjectProvider` mechanism, you may choose to
-declare your injection point as a `jakarta.inject.Provider`, allowing for on-demand
-access to beans of shorter scopes or lazy access to other beans through a
-`Provider.get()` call. The following example offers a variant of the preceding example.
+As with `@Autowired`, you can use `@Inject` at the field level, method level
+and constructor-argument level. Furthermore, you may declare your injection point as a
+`Provider`, allowing for on-demand access to beans of shorter scopes or lazy access to
+other beans through a `Provider.get()` call. The following example offers a variant of the
+preceding example:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject;
 	import jakarta.inject.Provider;
@@ -109,10 +105,9 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject
-	import jakarta.inject.Provider

 	class SimpleMovieLister {

@@ -128,15 +123,14 @@ Kotlin::
 ----
 ======

-If you would like to use a qualified name for the dependency that should be injected, you
-may choose to use the `@Named` annotation as an alternative to Spring's `@Qualifier`
-support, as the following example shows.
+If you would like to use a qualified name for the dependency that should be injected,
+you should use the `@Named` annotation, as the following example shows:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject;
 	import jakarta.inject.Named;
@@ -156,7 +150,7 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject
 	import jakarta.inject.Named
@@ -176,15 +170,12 @@ Kotlin::
 ======

 As with `@Autowired`, `@Inject` can also be used with `java.util.Optional` or
-`@Nullable`. This is even more applicable here, since `@Inject` does not have a
-`required` attribute. The following examples show how to use `@Inject` with `Optional`,
-`@Nullable`, and Kotlin's built-in support for nullable types.
+`@Nullable`. This is even more applicable here, since `@Inject` does not have
+a `required` attribute. The following pair of examples show how to use `@Inject` and
+`@Nullable`:

-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
-	import jakarta.inject.Inject;
-	import java.util.Optional;
-
 	public class SimpleMovieLister {

 		@Inject
@@ -198,11 +189,8 @@ As with `@Autowired`, `@Inject` can also be used with `java.util.Optional` or
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
-	import jakarta.inject.Inject;
-	import org.jspecify.annotations.Nullable;
-
 	public class SimpleMovieLister {

 		@Inject
@@ -214,10 +202,8 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	import jakarta.inject.Inject
-
 	class SimpleMovieLister {

 		@Inject
@@ -228,21 +214,21 @@ Kotlin::


 [[beans-named]]
-== `@Named`: Standard Equivalent to the `@Component` Annotation
+== `@Named` and `@ManagedBean`: Standard Equivalents to the `@Component` Annotation

-Instead of `@Component` or other Spring stereotype annotations, you may optionally choose
-to use `@jakarta.inject.Named`, as the following example shows.
+Instead of `@Component`, you can use `@jakarta.inject.Named` or `jakarta.annotation.ManagedBean`,
+as the following example shows:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject;
 	import jakarta.inject.Named;

-	@Named("movieListener")
+	@Named("movieListener")  // @ManagedBean("movieListener") could be used as well
 	public class SimpleMovieLister {

 		private MovieFinder movieFinder;
@@ -258,12 +244,12 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject
 	import jakarta.inject.Named

-	@Named("movieListener")
+	@Named("movieListener")  // @ManagedBean("movieListener") could be used as well
 	class SimpleMovieLister {

 		@Inject
@@ -274,15 +260,14 @@ Kotlin::
 ----
 ======

-It is very common to use `@Component` or other Spring stereotype annotations without
-specifying an explicit name for the component, and `@Named` can be used in a similar
-fashion, as the following example shows.
+It is very common to use `@Component` without specifying a name for the component.
+`@Named` can be used in a similar fashion, as the following example shows:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject;
 	import jakarta.inject.Named;
@@ -303,7 +288,7 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import jakarta.inject.Inject
 	import jakarta.inject.Named
@@ -319,14 +304,14 @@ Kotlin::
 ----
 ======

-When you use `@Named`, you can use component scanning in the exact same way as when you
-use Spring annotations, as the following example shows.
+When you use `@Named` or `@ManagedBean`, you can use component scanning in the
+exact same way as when you use Spring annotations, as the following example shows:

 [tabs]
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
 	@ComponentScan(basePackages = "org.example")
@@ -337,7 +322,7 @@ Java::

 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
 	@ComponentScan(basePackages = ["org.example"])
@@ -347,106 +332,55 @@ Kotlin::
 ----
 ======

-NOTE: In contrast to `@Component`, the JSR-330 `@Named` annotation is not composable. You
-should use Spring's stereotype model for building custom component annotations.
-
-[TIP]
-====
-If you work with legacy systems that still use `@javax.inject.Named` or
-`@javax.annotation.ManagedBean` for components (note the `javax` package namespace), you
-can explicitly configure component scanning to include those annotation types, as shown
-in the following example.
-
-[tabs]
-======
-Java::
-+
-[source,java,indent=0,subs="verbatim,quotes",fold="-imports"]
----
-	@Configuration
-	@ComponentScan(
-		basePackages = "org.example",
-		includeFilters = @Filter({
-			javax.inject.Named.class,
-			javax.annotation.ManagedBean.class
-		})
-	)
-	public class AppConfig  {
-		// ...
-	}
----
-
-Kotlin::
-+
-[source,kotlin,indent=0,subs="verbatim,quotes",fold="-imports"]
----
-	@Configuration
-	@ComponentScan(
-		basePackages = ["org.example"],
-		includeFilters = [Filter([
-			javax.inject.Named::class,
-			javax.annotation.ManagedBean::class
-		])]
-	)
-	class AppConfig  {
-		// ...
-	}
----
-======
-
-In addition, if you would like for the `value` attributes in `@javax.inject.Named` and
-`@javax.annotation.ManagedBean` to be used as component names, you need to override the
-`isStereotypeWithNameValue(...)` method in `AnnotationBeanNameGenerator` to add explicit
-support for `javax.annotation.ManagedBean` and `javax.inject.Named` and register your
-custom `AnnotationBeanNameGenerator` via the `nameGenerator` attribute in
-`@ComponentScan`.
-====
+NOTE: In contrast to `@Component`, the JSR-330 `@Named` and the JSR-250 `@ManagedBean`
+annotations are not composable. You should use Spring's stereotype model for building
+custom component annotations.


 [[beans-standard-annotations-limitations]]
 == Limitations of JSR-330 Standard Annotations

-When you work with JSR-330 standard annotations, you should know that some significant
-features are not available, as the following table shows.
+When you work with standard annotations, you should know that some significant
+features are not available, as the following table shows:

 [[annotations-comparison]]
-.Spring component model versus JSR-330 variants
+.Spring component model elements versus JSR-330 variants
 |===
-| Spring | JSR-330 | JSR-330 restrictions / comments
+| Spring| jakarta.inject.*| jakarta.inject restrictions / comments

-| `@Autowired`
-| `@Inject`
-| `@Inject` has no `required` attribute. Can be used with Java's `Optional` instead.
+| @Autowired
+| @Inject
+| `@Inject` has no 'required' attribute. Can be used with Java 8's `Optional` instead.

-| `@Component`
-| `@Named`
+| @Component
+| @Named / @ManagedBean
 | JSR-330 does not provide a composable model, only a way to identify named components.

-| `@Scope("singleton")`
-| `@Singleton`
+| @Scope("singleton")
+| @Singleton
 | The JSR-330 default scope is like Spring's `prototype`. However, in order to keep it
  consistent with Spring's general defaults, a JSR-330 bean declared in the Spring
  container is a `singleton` by default. In order to use a scope other than `singleton`,
  you should use Spring's `@Scope` annotation. `jakarta.inject` also provides a
-  `jakarta.inject.Scope` annotation; however, this one is only intended to be used
+  `jakarta.inject.Scope` annotation: however, this one is only intended to be used
  for creating custom annotations.

-| `@Qualifier`
-| `@Qualifier` / `@Named`
+| @Qualifier
+| @Qualifier / @Named
 | `jakarta.inject.Qualifier` is just a meta-annotation for building custom qualifiers.
  Concrete `String` qualifiers (like Spring's `@Qualifier` with a value) can be associated
  through `jakarta.inject.Named`.

-| `@Value`
+| @Value
 | -
 | no equivalent

-| `@Lazy`
+| @Lazy
 | -
 | no equivalent

-| `ObjectFactory`
-| `Provider`
+| ObjectFactory
+| Provider
 | `jakarta.inject.Provider` is a direct alternative to Spring's `ObjectFactory`,
  only with a shorter `get()` method name. It can also be used in combination with
  Spring's `@Autowired` or with non-annotated constructors and setter methods.
@@ -7,14 +7,14 @@ similar to the https://jakarta.ee/specifications/expression-language/[Jakarta Ex
 Language] but offers additional features, most notably method invocation and basic string
 templating functionality.

-While there are several other Java expression languages available -- OGNL, MVEL, and
-JBoss EL, to name a few -- the Spring Expression Language was created to provide the
-Spring community with a single well supported expression language that can be used across
-all the products in the Spring portfolio. Its language features are driven by the
-requirements of the projects in the Spring portfolio, including tooling requirements for
-code completion within the {spring-site-tools}[Spring Tools] IDE support. That said, SpEL
-is based on a technology-agnostic API that lets other expression language implementations
-be integrated, should the need arise.
+While there are several other Java expression languages available -- OGNL, MVEL, and JBoss
+EL, to name a few -- the Spring Expression Language was created to provide the Spring
+community with a single well supported expression language that can be used across all
+the products in the Spring portfolio. Its language features are driven by the
+requirements of the projects in the Spring portfolio, including tooling requirements
+for code completion support within the {spring-site-tools}[Spring Tools for Eclipse].
+That said, SpEL is based on a technology-agnostic API that lets other expression language
+implementations be integrated, should the need arise.

 While SpEL serves as the foundation for expression evaluation within the Spring
 portfolio, it is not directly tied to Spring and can be used independently. To
@@ -531,7 +531,6 @@ following kinds of expressions cannot be compiled.
 * Expressions relying on the conversion service
 * Expressions using custom resolvers
 * Expressions using overloaded operators
-* Expressions using `Optional` with the null-safe or Elvis operator
 * Expressions using array construction syntax
 * Expressions using selection or projection
 * Expressions using bean references
@@ -6,7 +6,7 @@ are set by using the `setVariable()` method in `EvaluationContext` implementatio

 [NOTE]
 ====
-Variable names must begin with a letter (as defined below), an underscore, or a dollar
+Variable names must be begin with a letter (as defined below), an underscore, or a dollar
 sign.

 Variable names must be composed of one or more of the following supported types of
@@ -15,7 +15,7 @@ configuration options. You should instantiate the `SimpleJdbcInsert` in the data
 layer's initialization method. For this example, the initializing method is the
 `setDataSource` method. You do not need to subclass the `SimpleJdbcInsert` class. Instead,
 you can create a new instance and set the table name by using the `withTableName` method.
-Configuration methods for this class follow the `fluent` style that returns the instance
+Configuration methods for this class follow the `fluid` style that returns the instance
 of the `SimpleJdbcInsert`, which lets you chain all configuration methods. The following
 example uses only one configuration method (we show examples of multiple methods later):

@@ -349,11 +349,11 @@ parameters return the data read from the table.

 You can declare `SimpleJdbcCall` in a manner similar to declaring `SimpleJdbcInsert`. You
 should instantiate and configure the class in the initialization method of your data-access
-layer. In contrast to the `StoredProcedure` class, you do not need to create a subclass,
-and you do not need to declare parameters that can be looked up in the database metadata.
-The following `SimpleJdbcCall` configuration example uses the preceding stored procedure.
-The only configuration option (other than the `DataSource`) is the name of the stored
-procedure.
+layer. Compared to the `StoredProcedure` class, you need not create a subclass
+and you need not to declare parameters that can be looked up in the database metadata.
+The following example of a `SimpleJdbcCall` configuration uses the preceding stored
+procedure (the only configuration option, in addition to the `DataSource`, is the name
+of the stored procedure):

 [tabs]
 ======
@@ -14,7 +14,7 @@ As of Spring Framework 7.0, Spring requires Hibernate ORM 7.x for Spring's
 `HibernateJpaVendorAdapter`.

 The `org.springframework.orm.jpa.hibernate` package supersedes the former `orm.hibernate5`:
-now for use with Hibernate ORM 7.x, tightly integrated with `HibernateJpaVendorAdapter`
+now for use with Hibernate ORM 7.1+, tightly integrated with `HibernateJpaVendorAdapter`
 as well as supporting Hibernate's native `SessionFactory.getCurrentSession()` style.
 ====

@@ -3,22 +3,21 @@
 :page-aliases: integration/class-data-sharing.adoc
 :page-aliases: integration/cds.adoc

-The ahead-of-time cache is a JVM feature introduced in Java 24 via
+The ahead-of-time cache is a JVM feature introduced in Java 24 via the
 https://openjdk.org/jeps/483[JEP 483] that can help reduce the startup time and memory
-footprint of Java applications. AOT cache is a natural evolution of
-https://docs.oracle.com/en/java/javase/17/vm/class-data-sharing.html[Class Data Sharing (CDS)].
+footprint of Java applications. AOT cache is a natural evolution of https://docs.oracle.com/en/java/javase/17/vm/class-data-sharing.html[Class Data Sharing (CDS)].
 Spring Framework supports both CDS and AOT cache, and it is recommended that you use the
-latter if available in the JVM version you are using (Java 24+).
+later if available in the JVM version your are using (Java 24+).

 To use this feature, an AOT cache should be created for the particular classpath of the
 application. It is possible to create this cache on the deployed instance, or during a
-training run performed for example when packaging the application thanks to a hook-point
+training run performed for example when packaging the application thanks to an hook-point
 provided by the Spring Framework to ease such use case. Once the cache is available, users
 should opt in to use it via a JVM flag.

 NOTE: If you are using Spring Boot, it is highly recommended to leverage its
 {spring-boot-docs-ref}/packaging/efficient.html#packaging.efficient.unpacking[executable JAR unpacking support]
-which is designed to fulfill the class loading requirements of both the AOT cache and CDS.
+which is designed to fulfill the class loading requirements of both AOT cache and CDS.

 == Creating the cache

@@ -30,22 +29,14 @@ invoked; but the lifecycle has not started, and the `ContextRefreshedEvent` has
 been published.

 To create the cache during the training run, it is possible to specify the `-Dspring.context.exit=onRefresh`
-JVM flag to start and then exit your Spring application once the
+JVM flag to start then exit your Spring application once the
 `ApplicationContext` has refreshed:


 --
 [tabs]
 ======
-
-AOT cache (Java 25+)::
-+
-[source,bash,subs="verbatim,quotes"]
----
-java -XX:AOTCacheOutput=app.aot -Dspring.context.exit=onRefresh -jar application.jar ...
----
-
-AOT cache (Java 24)::
+AOT cache::
 +
 [source,bash,subs="verbatim,quotes"]
 ----
@@ -64,12 +55,6 @@ java -XX:ArchiveClassesAtExit=app.jsa -Dspring.context.exit=onRefresh ...
 ======
 --

-NOTE: With Java 25+, AOT cache stores, among other things, the
-https://openjdk.org/jeps/515[method profiling information]. Therefore, to benefit of this capability,
-it is recommended to create an AOT cache for an application that experienced a portion of a
-production-like workflow instead of using the `-Dspring.context.exit=onRefresh` flag which designed to
-optimize only the startup of your application.
-
 == Using the cache

 Once the cache file has been created, you can use it to start your application faster:
@@ -97,7 +82,7 @@ java -XX:SharedArchiveFile=app.jsa ...

 Pay attention to the logs and the startup time to check if the AOT cache is used successfully.
 To figure out how effective the cache is, you can enable class loading logs by adding
-an extra attribute: `-Xlog:class+load:file=aot-cache.log`. This creates an `aot-cache.log` with
+an extra attribute: `-Xlog:class+load:file=aot-cache.log`. This creates a `aot-cache.log` with
 every attempt to load a class and its source. Classes that are loaded from the cache should have
 a "shared objects file" source, as shown in the following example:

@@ -110,11 +95,11 @@ a "shared objects file" source, as shown in the following example:
 [0.151s][info][class,load] org.springframework.context.MessageSource source: shared objects file
 ----

-If the AOT cache cannot be enabled or if you have a large number of classes that are not loaded from
+If the AOT cache can't be enabled or if you have a large number of classes that are not loaded from
 the cache, make sure that the following conditions are fulfilled when creating and using the cache:

 - The very same JVM must be used.
 - The classpath must be specified as a JAR or a list of JARs, and avoid the usage of directories and `*` wildcard characters.
 - The timestamps of the JARs must be preserved.
- - When using the cache, the classpath must be the same as the one used to create it, in the same order.
-Additional JARs or directories can be specified *at the end* (but will not be cached).
+ - When using the cache, the classpath must be the same than the one used to create it, in the same order.
+Additional JARs or directories can be specified *at the end* (but won't be cached).
@@ -1,11 +1,16 @@
 [[appendix]]
 = Appendix

+
+
+
 [[appendix.xsd-schemas]]
 == XML Schemas

 This part of the appendix lists XML schemas related to integration technologies.

+
+
 [[appendix.xsd-schemas-jee]]
 === The `jee` Schema

@@ -167,7 +172,7 @@ different properties with `jee`:

 The `<jee:local-slsb/>` element configures a reference to a local EJB Stateless Session Bean.

-The following example shows how to configure a reference to a local EJB Stateless Session Bean
+The following example shows how to configures a reference to a local EJB Stateless Session Bean
 without `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -179,7 +184,7 @@ without `jee`:
 	</bean>
 ----

-The following example shows how to configure a reference to a local EJB Stateless Session Bean
+The following example shows how to configures a reference to a local EJB Stateless Session Bean
 with `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -195,7 +200,7 @@ with `jee`:

 The `<jee:local-slsb/>` element configures a reference to a local EJB Stateless Session Bean.

-The following example shows how to configure a reference to a local EJB Stateless Session Bean
+The following example shows how to configures a reference to a local EJB Stateless Session Bean
 and a number of properties without `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -210,7 +215,7 @@ and a number of properties without `jee`:
 	</bean>
 ----

-The following example shows how to configure a reference to a local EJB Stateless Session Bean
+The following example shows how to configures a reference to a local EJB Stateless Session Bean
 and a number of properties with `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -229,7 +234,7 @@ and a number of properties with `jee`:

 The `<jee:remote-slsb/>` element configures a reference to a `remote` EJB Stateless Session Bean.

-The following example shows how to configure a reference to a remote EJB Stateless Session Bean
+The following example shows how to configures a reference to a remote EJB Stateless Session Bean
 without `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -246,7 +251,7 @@ without `jee`:
 	</bean>
 ----

-The following example shows how to configure a reference to a remote EJB Stateless Session Bean
+The following example shows how to configures a reference to a remote EJB Stateless Session Bean
 with `jee`:

 [source,xml,indent=0,subs="verbatim,quotes"]
@@ -308,7 +313,7 @@ xref:integration/jmx/naming.adoc#jmx-context-mbeanexport[Configuring Annotation-
 === The `cache` Schema

 You can use the `cache` elements to enable support for Spring's `@CacheEvict`, `@CachePut`,
-and `@Caching` annotations. The `cache` schema also supports declarative XML-based caching. See
+and `@Caching` annotations. It it also supports declarative XML-based caching. See
 xref:integration/cache/annotations.adoc#cache-annotation-enable[Enabling Caching Annotations] and
 xref:integration/cache/declarative-xml.adoc[Declarative XML-based Caching] for details.

@@ -35,7 +35,7 @@ xref:integration/cache/store-configuration.adoc#cache-store-configuration-jsr107
 [[cache-store-configuration-caffeine]]
 == Caffeine Cache

-Caffeine is a rewrite of Guava's cache, and its implementation is located in the
+Caffeine is a Java 8 rewrite of Guava's cache, and its implementation is located in the
 `org.springframework.cache.caffeine` package and provides access to several features
 of Caffeine.

@@ -26,7 +26,7 @@ behind the scenes for each annotated method, by using a `JmsListenerContainerFac
 Such a container is not registered against the application context but can be easily
 located for management purposes by using the `JmsListenerEndpointRegistry` bean.

-TIP: `@JmsListener` is a repeatable annotation, so you can associate
+TIP: `@JmsListener` is a repeatable annotation on Java 8, so you can associate
 several JMS destinations with the same method by adding additional `@JmsListener`
 declarations to it.

@@ -466,7 +466,7 @@ synchronous, asynchronous, and streaming scenarios.
 * Non-blocking I/O
 * Reactive Streams back pressure
 * High concurrency with fewer hardware resources
-* Functional-style, fluent API that takes advantage of lambda expressions
+* Functional-style, fluent API that takes advantage of Java 8 lambdas
 * Synchronous and asynchronous interactions
 * Streaming up to or streaming down from a server

@@ -533,7 +533,8 @@ that returns a value:
 ----

 TIP: `@Async` methods may not only declare a regular `java.util.concurrent.Future` return
-type but also `java.util.concurrent.CompletableFuture`, for richer interaction with
+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`.
@@ -3,16 +3,14 @@
 :page-section-summary-toc: 1

 The Spring Framework supports various Kotlin constructs, such as instantiating Kotlin classes
-through primary constructors, data binding for immutable classes, and optional parameters
-with default values for functions.
+through primary constructors, immutable classes data binding, and function optional parameters
+with default values.

 Kotlin parameter names are recognized through a dedicated `KotlinReflectionParameterNameDiscoverer`,
-which allows finding interface method parameter names without requiring the Java `-parameters`
-compiler flag to be enabled during compilation.
-
-TIP: For completeness, we nevertheless recommend running the Kotlin compiler with its
-`-java-parameters` flag for standard Java parameter exposure.
+which allows finding interface method parameter names without requiring the Java 8 `-parameters`
+compiler flag to be enabled during compilation. (For completeness, we nevertheless recommend
+running the Kotlin compiler with its `-java-parameters` flag for standard Java parameter exposure.)

 You can declare configuration classes as
 {kotlin-docs}/nested-classes.html[top level or nested but not inner],
-since the latter requires a reference to the outer class.
+since the later requires a reference to the outer class.
@@ -1,8 +1,8 @@
 [[coroutines]]
 = Coroutines

-Kotlin {kotlin-docs}/coroutines-overview.html[Coroutines] are instances of
-suspendable computations allowing to write non-blocking code in an imperative way. On language side,
+Kotlin {kotlin-docs}/coroutines-overview.html[Coroutines] are Kotlin
+lightweight threads allowing to write non-blocking code in an imperative way. On language side,
 suspending functions provides an abstraction for asynchronous operations while on library side
 {kotlin-github-org}/kotlinx.coroutines[kotlinx.coroutines] provides functions like
 {kotlin-coroutines-api}/kotlinx-coroutines-core/kotlinx.coroutines/async.html[`async { }`]
@@ -319,17 +319,9 @@ progresses.
 == Testing

 This section addresses testing with the combination of Kotlin and Spring Framework.
-The recommended testing framework is https://junit.org/[JUnit] along with
+The recommended testing framework is https://junit.org/junit5/[JUnit] along with
 https://mockk.io/[Mockk] for mocking.

-[TIP]
-====
-Kotlin lets you specify meaningful test function names between backticks (```).
-
-For a concrete example, see the `+++`Find all users on HTML page`()+++` test function later
-in this section.
-====
-
 NOTE: If you are using Spring Boot, see
 {spring-boot-docs-ref}/features/kotlin.html#features.kotlin.testing[this related documentation].

@@ -360,6 +352,7 @@ file with a `spring.test.constructor.autowire.mode = all` property.
 [[per_class-lifecycle]]
 === `PER_CLASS` Lifecycle

+Kotlin lets you specify meaningful test function names between backticks (```).
 With JUnit Jupiter, Kotlin test classes can use the `@TestInstance(TestInstance.Lifecycle.PER_CLASS)`
 annotation to enable single instantiation of test classes, which allows the use of `@BeforeAll`
 and `@AfterAll` annotations on non-static methods, which is a good fit for Kotlin.
@@ -237,8 +237,8 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	RSocketStrategies strategies = RSocketStrategies.builder()
-		.encoders(encoders -> encoders.add(new JacksonCborEncoder()))
-		.decoders(decoders -> decoders.add(new JacksonCborDecoder()))
+		.encoders(encoders -> encoders.add(new Jackson2CborEncoder()))
+		.decoders(decoders -> decoders.add(new Jackson2CborDecoder()))
 		.build();

 	RSocketRequester requester = RSocketRequester.builder()
@@ -251,8 +251,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	val strategies = RSocketStrategies.builder()
-			.encoders { it.add(JacksonCborEncoder()) }
-			.decoders { it.add(JacksonCborDecoder()) }
+			.encoders { it.add(Jackson2CborEncoder()) }
+			.decoders { it.add(Jackson2CborDecoder()) }
 			.build()

 	val requester = RSocketRequester.builder()
@@ -681,8 +681,8 @@ Java::
 		@Bean
 		public RSocketStrategies rsocketStrategies() {
 			return RSocketStrategies.builder()
-				.encoders(encoders -> encoders.add(new JacksonCborEncoder()))
-				.decoders(decoders -> decoders.add(new JacksonCborDecoder()))
+				.encoders(encoders -> encoders.add(new Jackson2CborEncoder()))
+				.decoders(decoders -> decoders.add(new Jackson2CborDecoder()))
 				.routeMatcher(new PathPatternRouteMatcher())
 				.build();
 		}
@@ -703,8 +703,8 @@ Kotlin::

 		@Bean
 		fun rsocketStrategies() = RSocketStrategies.builder()
-				.encoders { it.add(JacksonCborEncoder()) }
-				.decoders { it.add(JacksonCborDecoder()) }
+				.encoders { it.add(Jackson2CborEncoder()) }
+				.decoders { it.add(Jackson2CborDecoder()) }
 				.routeMatcher(PathPatternRouteMatcher())
 				.build()
 	}
@@ -5,7 +5,6 @@ The following annotations are supported when used in conjunction with the
 xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-extension[`SpringExtension`]
 and JUnit Jupiter (that is, the programming model in JUnit):

-* xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-springextensionconfig[`@SpringExtensionConfig`]
 * xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-junit-jupiter-springjunitconfig[`@SpringJUnitConfig`]
 * xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-junit-jupiter-springjunitwebconfig[`@SpringJUnitWebConfig`]
 * xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-testconstructor[`@TestConstructor`]
@@ -15,47 +14,6 @@ and JUnit Jupiter (that is, the programming model in JUnit):
 * xref:testing/annotations/integration-spring/annotation-disabledinaotmode.adoc[`@DisabledInAotMode`]


-[[integration-testing-annotations-springextensionconfig]]
-== `@SpringExtensionConfig`
-
-`@SpringExtensionConfig` is a type-level annotation that can be used to configure the
-behavior of the `SpringExtension`.
-
-As of Spring Framework 7.0, the `SpringExtension` is configured to use a test-method
-scoped `ExtensionContext`, which enables consistent dependency injection into fields and
-constructors from the `ApplicationContext` for the current test method in a `@Nested`
-test class hierarchy. However, if a third-party `TestExecutionListener` is not compatible
-with the semantics associated with a test-method scoped extension context — or if a
-developer wishes to switch to test-class scoped semantics — the `SpringExtension` can be
-configured to use a test-class scoped `ExtensionContext` by annotating a top-level test
-class with `@SpringExtensionConfig(useTestClassScopedExtensionContext = true)`.
-
-[TIP]
-====
-If your top-level test class is configured to use JUnit Jupiter's
-`@TestInstance(Lifecycle.PER_CLASS)` semantics, the `SpringExtension` will always use a
-test-class scoped `ExtensionContext`, and there is no need to declare
-`@SpringExtensionConfig(useTestClassScopedExtensionContext = true)`.
-====
-
-[NOTE]
-====
-This annotation is currently only applicable to `@Nested` test class hierarchies and
-should be applied to the top-level enclosing class of a `@Nested` test class hierarchy.
-
-Consequently, there is no need to declare this annotation on a test class that does not
-contain `@Nested` test classes.
-====
-
-[NOTE]
-====
-xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-nestedtestconfiguration[`@NestedTestConfiguration`]
-does not apply to this annotation.
-
-`@SpringExtensionConfig` will always be detected within a `@Nested` test class hierarchy,
-effectively disregarding any `@NestedTestConfiguration(OVERRIDE)` declarations.
-====
-
 [[integration-testing-annotations-junit-jupiter-springjunitconfig]]
 == `@SpringJUnitConfig`

@@ -229,7 +187,7 @@ default mode may be set via the
 xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism.

 The default mode may also be configured as a
-https://docs.junit.org/current/running-tests/configuration-parameters.html[JUnit Platform configuration parameter].
+https://junit.org/junit5/docs/current/user-guide/#running-tests-config-params[JUnit Platform configuration parameter].

 If the `spring.test.constructor.autowire.mode` property is not set, test class
 constructors will not be automatically autowired.
@@ -2,12 +2,11 @@
 = Meta-Annotation Support for Testing

 You can use most test-related annotations as
-xref:core/beans/classpath-scanning.adoc#beans-meta-annotations[meta-annotations] to
-create custom composed annotations and reduce configuration duplication across a test
-suite.
+xref:core/beans/classpath-scanning.adoc#beans-meta-annotations[meta-annotations] to create custom composed
+annotations and reduce configuration duplication across a test suite.

-For example, you can use each of the following as a meta-annotation in conjunction with
-the xref:testing/testcontext-framework.adoc[TestContext framework].
+You can use each of the following as a meta-annotation in conjunction with the
+xref:testing/testcontext-framework.adoc[TestContext framework].

 * `@BootstrapWith`
 * `@ContextConfiguration`
@@ -38,7 +37,111 @@ the xref:testing/testcontext-framework.adoc[TestContext framework].
 * `@EnabledIf` _(only supported on JUnit Jupiter)_
 * `@DisabledIf` _(only supported on JUnit Jupiter)_

-Consider the following test classes that use the `SpringExtension` with JUnit Jupiter:
+Consider the following example:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@RunWith(SpringRunner.class)
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
+	@ActiveProfiles("dev")
+	@Transactional
+	public class OrderRepositoryTests { }
+
+	@RunWith(SpringRunner.class)
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
+	@ActiveProfiles("dev")
+	@Transactional
+	public class UserRepositoryTests { }
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@RunWith(SpringRunner::class)
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
+	@ActiveProfiles("dev")
+	@Transactional
+	class OrderRepositoryTests { }
+
+	@RunWith(SpringRunner::class)
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
+	@ActiveProfiles("dev")
+	@Transactional
+	class UserRepositoryTests { }
+----
+======
+
+If we discover that we are repeating the preceding configuration across our JUnit 4-based
+test suite, we can reduce the duplication by introducing a custom composed annotation
+that centralizes the common test configuration for Spring, as follows:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Target(ElementType.TYPE)
+	@Retention(RetentionPolicy.RUNTIME)
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
+	@ActiveProfiles("dev")
+	@Transactional
+	public @interface TransactionalDevTestConfig { }
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Target(AnnotationTarget.TYPE)
+	@Retention(AnnotationRetention.RUNTIME)
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
+	@ActiveProfiles("dev")
+	@Transactional
+	annotation class TransactionalDevTestConfig { }
+----
+======
+
+Then we can use our custom `@TransactionalDevTestConfig` annotation to simplify the
+configuration of individual JUnit 4 based test classes, as follows:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@RunWith(SpringRunner.class)
+	@TransactionalDevTestConfig
+	public class OrderRepositoryTests { }
+
+	@RunWith(SpringRunner.class)
+	@TransactionalDevTestConfig
+	public class UserRepositoryTests { }
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@RunWith(SpringRunner::class)
+	@TransactionalDevTestConfig
+	class OrderRepositoryTests
+
+	@RunWith(SpringRunner::class)
+	@TransactionalDevTestConfig
+	class UserRepositoryTests
+----
+======
+
+If we write tests that use JUnit Jupiter, we can reduce code duplication even further,
+since annotations in JUnit Jupiter can also be used as meta-annotations. Consider the
+following example:

 [tabs]
 ======
@@ -47,13 +150,13 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@ExtendWith(SpringExtension.class)
-	@ContextConfiguration(classes = {AppConfig.class, TestDataAccessConfig.class})
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
 	@ActiveProfiles("dev")
 	@Transactional
 	class OrderRepositoryTests { }

 	@ExtendWith(SpringExtension.class)
-	@ContextConfiguration(classes = {AppConfig.class, TestDataAccessConfig.class})
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
 	@ActiveProfiles("dev")
 	@Transactional
 	class UserRepositoryTests { }
@@ -64,22 +167,23 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@ExtendWith(SpringExtension::class)
-	@ContextConfiguration(classes = [AppConfig::class, TestDataAccessConfig::class])
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
 	@ActiveProfiles("dev")
 	@Transactional
 	class OrderRepositoryTests { }

 	@ExtendWith(SpringExtension::class)
-	@ContextConfiguration(classes = [AppConfig::class, TestDataAccessConfig::class])
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
 	@ActiveProfiles("dev")
 	@Transactional
 	class UserRepositoryTests { }
 ----
 ======

-If we discover that we are repeating the preceding configuration across our test suite,
-we can reduce the duplication by introducing a custom composed annotation that
-centralizes the common test configuration for Spring and JUnit Jupiter, as follows:
+If we discover that we are repeating the preceding configuration across our JUnit
+Jupiter-based test suite, we can reduce the duplication by introducing a custom composed
+annotation that centralizes the common test configuration for Spring and JUnit Jupiter,
+as follows:

 [tabs]
 ======
@@ -90,7 +194,7 @@ Java::
 	@Target(ElementType.TYPE)
 	@Retention(RetentionPolicy.RUNTIME)
 	@ExtendWith(SpringExtension.class)
-	@ContextConfiguration(classes = {AppConfig.class, TestDataAccessConfig.class})
+	@ContextConfiguration({"/app-config.xml", "/test-data-access-config.xml"})
 	@ActiveProfiles("dev")
 	@Transactional
 	public @interface TransactionalDevTestConfig { }
@@ -103,7 +207,7 @@ Kotlin::
 	@Target(AnnotationTarget.TYPE)
 	@Retention(AnnotationRetention.RUNTIME)
 	@ExtendWith(SpringExtension::class)
-	@ContextConfiguration(classes = [AppConfig::class, TestDataAccessConfig::class])
+	@ContextConfiguration("/app-config.xml", "/test-data-access-config.xml")
 	@ActiveProfiles("dev")
 	@Transactional
 	annotation class TransactionalDevTestConfig { }
@@ -4,7 +4,8 @@
 `@AfterTransaction` indicates that the annotated `void` method should be run after a
 transaction is ended, for test methods that have been configured to run within a
 transaction by using Spring's `@Transactional` annotation. `@AfterTransaction` methods
-are not required to be `public` and may be declared on interface default methods.
+are not required to be `public` and may be declared on Java 8-based interface default
+methods.

 [tabs]
 ======
@@ -4,7 +4,8 @@
 `@BeforeTransaction` indicates that the annotated `void` method should be run before a
 transaction is started, for test methods that have been configured to run within a
 transaction by using Spring's `@Transactional` annotation. `@BeforeTransaction` methods
-are not required to be `public` and may be declared on interface default methods.
+are not required to be `public` and may be declared on Java 8-based interface default
+methods.

 The following example shows how to use the `@BeforeTransaction` annotation:

@@ -3,7 +3,7 @@

 `@SqlGroup` is a container annotation that aggregates several `@Sql` annotations. You can
 use `@SqlGroup` natively to declare several nested `@Sql` annotations, or you can use it
-in conjunction with Java's support for repeatable annotations, where `@Sql` can be
+in conjunction with Java 8's support for repeatable annotations, where `@Sql` can be
 declared several times on the same class or method, implicitly generating this container
 annotation. The following example shows how to declare an SQL group:

@@ -9,6 +9,7 @@ and can be used anywhere in the Spring Framework.
 * `@Qualifier`
 * `@Value`
 * `@Resource` (jakarta.annotation) if JSR-250 is present
+* `@ManagedBean` (jakarta.annotation) if JSR-250 is present
 * `@Inject` (jakarta.inject) if JSR-330 is present
 * `@Named` (jakarta.inject) if JSR-330 is present
 * `@PersistenceContext` (jakarta.persistence) if JPA is present
@@ -5,25 +5,24 @@ It is important to be able to perform some integration testing without requiring
 deployment to your application server or connecting to other enterprise infrastructure.
 Doing so lets you test things such as:

-* The correct wiring of your Spring components.
-* Data access using JDBC or an ORM tool.
-  ** This can include such things as the correctness of SQL statements, Hibernate queries,
-     JPA entity mappings, and so forth.
+* The correct wiring of your Spring IoC container contexts.
+* Data access using JDBC or an ORM tool. This can include such things as the correctness
+  of SQL statements, Hibernate queries, JPA entity mappings, and so forth.

 The Spring Framework provides first-class support for integration testing in the
-`spring-test` module. The name of the actual JAR file might include the release version,
-depending on where you get it from (see the
-{spring-framework-wiki}/Spring-Framework-Artifacts[Spring Framework Artifacts] wiki page
-for details). This library includes the `org.springframework.test` package, which
+`spring-test` module. The name of the actual JAR file might include the release version
+and might also be in the long `org.springframework.test` form, depending on where you get
+it from (see the xref:core/beans/dependencies.adoc[section on Dependency Management]
+for an explanation). This library includes the `org.springframework.test` package, which
 contains valuable classes for integration testing with a Spring container. This testing
 does not rely on an application server or other deployment environment. Such tests are
 slower to run than unit tests but much faster than the equivalent Selenium tests or
 remote tests that rely on deployment to an application server.

 Unit and integration testing support is provided in the form of the annotation-driven
-xref:testing/testcontext-framework.adoc[Spring TestContext Framework]. The TestContext
-framework is agnostic of the actual testing framework in use, which allows
-instrumentation of tests in various environments, including JUnit, TestNG, and others.
+xref:testing/testcontext-framework.adoc[Spring TestContext Framework]. The TestContext framework is
+agnostic of the actual testing framework in use, which allows instrumentation of tests
+in various environments, including JUnit, TestNG, and others.

 The following section provides an overview of the high-level goals of Spring's
 integration support, and the rest of this chapter then focuses on dedicated topics:
@@ -184,10 +184,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	standaloneSetup(SimpleController())
-		.alwaysExpect<StandaloneMockMvcBuilder>(status().isOk())
-		.alwaysExpect<StandaloneMockMvcBuilder>(content().contentType("application/json;charset=UTF-8"))
-		.build()
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -18,7 +18,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	mockMvc = standaloneSetup(PersonController()).addFilters<StandaloneMockMvcBuilder>(CharacterEncodingFilter()).build()
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -159,18 +159,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	class MyWebTests {
-
-		lateinit var mockMvc: MockMvc
-
-		@BeforeEach
-		fun setup() {
-			mockMvc = standaloneSetup(AccountController())
-				.defaultRequest<StandaloneMockMvcBuilder>(get("/")
-				.contextPath("/app").servletPath("/main")
-				.accept(MediaType.APPLICATION_JSON)).build()
-		}
-	}
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -25,13 +25,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	// static import of MockMvcBuilders.standaloneSetup
-
-	val mockMvc = standaloneSetup(MusicController())
-		.defaultRequest<StandaloneMockMvcBuilder>(get("/").accept(MediaType.APPLICATION_JSON))
-		.alwaysExpect<StandaloneMockMvcBuilder>(status().isOk())
-		.alwaysExpect<StandaloneMockMvcBuilder>(content().contentType("application/json;charset=UTF-8"))
-		.build()
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -59,13 +53,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	// static import of SharedHttpSessionConfigurer.sharedHttpSession
-
-	val mockMvc = MockMvcBuilders.standaloneSetup(TestController())
-			.apply<StandaloneMockMvcBuilder>(sharedHttpSession())
-			.build()
-
-	// Use mockMvc to perform requests...
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -8,9 +8,9 @@ use https://www.gebish.org/[Geb] to make our tests even Groovy-er.
 == Why Geb and MockMvc?

 Geb is backed by WebDriver, so it offers many of the
-xref:testing/mockmvc/htmlunit/webdriver.adoc#mockmvc-server-htmlunit-webdriver-why[same benefits]
-that we get from WebDriver. However, Geb makes things even easier by taking care of some
-of the boilerplate code for us.
+xref:testing/mockmvc/htmlunit/webdriver.adoc#spring-mvc-test-server-htmlunit-webdriver-why[same benefits] that we get from
+WebDriver. However, Geb makes things even easier by taking care of some of the
+boilerplate code for us.

 [[mockmvc-server-htmlunit-geb-setup]]
 == MockMvc and Geb Setup
@@ -28,8 +28,7 @@ def setup() {
 ----

 NOTE: This is a simple example of using `MockMvcHtmlUnitDriverBuilder`. For more advanced
-usage, see
-xref:testing/mockmvc/htmlunit/webdriver.adoc#mockmvc-server-htmlunit-webdriver-advanced-builder[Advanced `MockMvcHtmlUnitDriverBuilder`].
+usage, see xref:testing/mockmvc/htmlunit/webdriver.adoc#spring-mvc-test-server-htmlunit-webdriver-advanced-builder[Advanced `MockMvcHtmlUnitDriverBuilder`].

 This ensures that any URL referencing `localhost` as the server is directed to our
 `MockMvc` instance without the need for a real HTTP connection. Any other URL is
@@ -63,10 +62,10 @@ forwarded to the current page object. This removes a lot of the boilerplate code
 needed when using WebDriver directly.

 As with direct WebDriver usage, this improves on the design of our
-xref:testing/mockmvc/htmlunit/mah.adoc#mockmvc-server-htmlunit-mah-usage[HtmlUnit test]
-by using the Page Object Pattern. As mentioned previously, we can use the Page Object
-Pattern with HtmlUnit and WebDriver, but it is even easier with Geb. Consider our new
-Groovy-based `CreateMessagePage` implementation:
+xref:testing/mockmvc/htmlunit/mah.adoc#spring-mvc-test-server-htmlunit-mah-usage[HtmlUnit test] by using the Page Object
+Pattern. As mentioned previously, we can use the Page Object Pattern with HtmlUnit and
+WebDriver, but it is even easier with Geb. Consider our new Groovy-based
+`CreateMessagePage` implementation:

 [source,groovy]
 ----
@@ -7,7 +7,8 @@ to use the raw HtmlUnit libraries.
 [[mockmvc-server-htmlunit-mah-setup]]
 == MockMvc and HtmlUnit Setup

-First, make sure that you have included a test dependency on `org.htmlunit:htmlunit`.
+First, make sure that you have included a test dependency on
+`org.htmlunit:htmlunit`.

 We can easily create an HtmlUnit `WebClient` that integrates with MockMvc by using the
 `MockMvcWebClientBuilder`, as follows:
@@ -44,7 +45,7 @@ Kotlin::
 ======

 NOTE: This is a simple example of using `MockMvcWebClientBuilder`. For advanced usage,
-see <<mockmvc-server-htmlunit-mah-advanced-builder>>.
+see xref:testing/mockmvc/htmlunit/mah.adoc#spring-mvc-test-server-htmlunit-mah-advanced-builder[Advanced `MockMvcWebClientBuilder`].

 This ensures that any URL that references `localhost` as the server is directed to our
 `MockMvc` instance without the need for a real HTTP connection. Any other URL is
@@ -76,7 +77,7 @@ Kotlin::
 ======

 NOTE: The default context path is `""`. Alternatively, we can specify the context path,
-as described in <<mockmvc-server-htmlunit-mah-advanced-builder>>.
+as described in xref:testing/mockmvc/htmlunit/mah.adoc#spring-mvc-test-server-htmlunit-mah-advanced-builder[Advanced `MockMvcWebClientBuilder`].

 Once we have a reference to the `HtmlPage`, we can then fill out the form and submit it
 to create a message, as the following example shows:
@@ -143,10 +144,10 @@ Kotlin::
 ======

 The preceding code improves on our
-xref:testing/mockmvc/htmlunit/why.adoc#mockmvc-server-htmlunit-why[MockMvc test] in a
-number of ways. First, we no longer have to explicitly verify our form and then create a
-request that looks like the form. Instead, we request the form, fill it out, and submit
-it, thereby significantly reducing the overhead.
+xref:testing/mockmvc/htmlunit/why.adoc#spring-mvc-test-server-htmlunit-mock-mvc-test[MockMvc test] in a number of ways.
+First, we no longer have to explicitly verify our form and then create a request that
+looks like the form. Instead, we request the form, fill it out, and submit it, thereby
+significantly reducing the overhead.

 Another important factor is that https://htmlunit.sourceforge.io/javascript.html[HtmlUnit
 uses the Mozilla Rhino engine] to evaluate JavaScript. This means that we can also test
@@ -266,19 +267,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	val mockMvc = MockMvcBuilders
-			.webAppContextSetup(context)
-			.apply<DefaultMockMvcBuilder>(springSecurity())
-			.build()
-
-	webClient = MockMvcWebClientBuilder
-			.mockMvcSetup(mockMvc)
-			// for illustration only - defaults to ""
-			.contextPath("")
-			// By default MockMvc is used for localhost only;
-			// the following will use MockMvc for example.com and example.org as well
-			.useMockMvcForHosts("example.com", "example.org")
-			.build()
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -203,7 +203,7 @@ Kotlin::
 ======

 NOTE: This is a simple example of using `MockMvcHtmlUnitDriverBuilder`. For more advanced
-usage, see <<mockmvc-server-htmlunit-webdriver-advanced-builder>>.
+usage, see xref:testing/mockmvc/htmlunit/webdriver.adoc#spring-mvc-test-server-htmlunit-webdriver-advanced-builder[Advanced `MockMvcHtmlUnitDriverBuilder`].

 The preceding example ensures that any URL that references `localhost` as the server is
 directed to our `MockMvc` instance without the need for a real HTTP connection. Any other
@@ -259,11 +259,10 @@ Kotlin::
 ======
 --

-This improves on the design of our
-xref:testing/mockmvc/htmlunit/mah.adoc#mockmvc-server-htmlunit-mah-usage[HtmlUnit test]
+This improves on the design of our xref:testing/mockmvc/htmlunit/mah.adoc#spring-mvc-test-server-htmlunit-mah-usage[HtmlUnit test]
 by leveraging the Page Object Pattern. As we mentioned in
-<<mockmvc-server-htmlunit-webdriver-why>>, we can use the Page Object Pattern with
-HtmlUnit, but it is much easier with WebDriver. Consider the following
+xref:testing/mockmvc/htmlunit/webdriver.adoc#mockmvc-server-htmlunit-webdriver-why[Why WebDriver and MockMvc?], we can use the Page Object Pattern
+with HtmlUnit, but it is much easier with WebDriver. Consider the following
 `CreateMessagePage` implementation:

 --
@@ -563,19 +562,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
-	val mockMvc: MockMvc = MockMvcBuilders
-			.webAppContextSetup(context)
-			.apply<DefaultMockMvcBuilder>(springSecurity())
-			.build()
-
-	driver = MockMvcHtmlUnitDriverBuilder
-			.mockMvcSetup(mockMvc)
-			// for illustration only - defaults to ""
-			.contextPath("")
-			// By default MockMvc is used for localhost only;
-			// the following will use MockMvc for example.com and example.org as well
-			.useMockMvcForHosts("example.com", "example.org")
-			.build()
+	// Not possible in Kotlin until {kotlin-issues}/KT-22208 is fixed
 ----
 ======

@@ -60,7 +60,7 @@ assume our form looks like the following snippet:
 	</form>
 ----

-How do we ensure that our form produces the correct request to create a new message? A
+How do we ensure that our form produce the correct request to create a new message? A
 naive attempt might resemble the following:

 [tabs]
@@ -154,7 +154,7 @@ validation.
 [[mockmvc-server-htmlunit-why-integration]]
 == Integration Testing to the Rescue?

-To resolve the issues mentioned above, we could perform end-to-end integration testing,
+To resolve the issues mentioned earlier, we could perform end-to-end integration testing,
 but this has some drawbacks. Consider testing the view that lets us page through the
 messages. We might need the following tests:

@@ -171,7 +171,7 @@ leads to a number of additional challenges:
 * Testing can become slow, since each test would need to ensure that the database is in
  the correct state.
 * Since our database needs to be in a specific state, we cannot run tests in parallel.
-* Performing assertions on items such as auto-generated IDs, timestamps, and others can
+* Performing assertions on such items as auto-generated IDs, timestamps, and others can
  be difficult.

 These challenges do not mean that we should abandon end-to-end integration testing
@@ -11,7 +11,7 @@ https://testng.org/[TestNG] ::
  testing, distributed testing, and other features. Supported in the
  xref:testing/testcontext-framework.adoc[Spring TestContext Framework].
 {assertj-docs}[AssertJ] ::
-  "Fluent assertions for Java", including support for lambda expressions, streams, and
+  "Fluent assertions for Java", including support for Java 8 lambdas, streams, and
  numerous other features. Supported in Spring's
  xref:testing/mockmvc/assertj.adoc[MockMvc testing support].
 https://en.wikipedia.org/wiki/Mock_Object[Mock Objects] ::
@@ -10,7 +10,7 @@ applications without a running server via MockMvc.



-[[resttestclient.setup]]
+[[resttestclient-setup]]
 == Setup

 To set up a `RestTestClient` you need to choose a server setup to bind to. This can be one
@@ -18,7 +18,7 @@ of several MockMvc setup choices, or a connection to a live server.



-[[resttestclient.controller-config]]
+[[resttestclient-controller-config]]
 === Bind to Controller

 This setup allows you to test specific controller(s) via mock request and response objects,
@@ -42,17 +42,55 @@ Kotlin::
 ----
 ======

-[[resttestclient.context-config]]
+[[resttestclient-context-config]]
 === Bind to `ApplicationContext`

 This setup allows you to load Spring configuration with Spring MVC
 infrastructure and controller declarations and use it to handle requests via mock request
 and response objects, without a running server.

-include-code::./RestClientContextTests[indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@SpringJUnitConfig(WebConfig.class) // <1>
+	class MyTests {

+		RestTestClient client;

-[[resttestclient.fn-config]]
+		@BeforeEach
+		void setUp(ApplicationContext context) {  // <2>
+			client = RestTestClient.bindToApplicationContext(context).build(); // <3>
+		}
+	}
+----
+<1> Specify the configuration to load
+<2> Inject the configuration
+<3> Create the `RestTestClient`
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@SpringJUnitConfig(WebConfig::class) // <1>
+	class MyTests {
+
+		lateinit var client: RestTestClient
+
+		@BeforeEach
+		fun setUp(context: ApplicationContext) { // <2>
+			client = RestTestClient.bindToApplicationContext(context).build() // <3>
+		}
+	}
+----
+<1> Specify the configuration to load
+<2> Inject the configuration
+<3> Create the `RestTestClient`
+======
+
+[[resttestclient-fn-config]]
 === Bind to Router Function

 This setup allows you to test xref:web/webmvc-functional.adoc[functional endpoints] via
@@ -77,7 +115,7 @@ Kotlin::
 ----
 ======

-[[resttestclient.server-config]]
+[[resttestclient-server-config]]
 === Bind to Server

 This setup connects to a running server to perform full, end-to-end HTTP tests:
@@ -101,7 +139,7 @@ Kotlin::



-[[resttestclient.client-config]]
+[[resttestclient-client-config]]
 === Client Config

 In addition to the server setup options described earlier, you can also configure client
@@ -132,7 +170,7 @@ Kotlin::



-[[resttestclient.tests]]
+[[resttestclient-tests]]
 == Writing Tests

 xref:integration/rest-clients.adoc#rest-restclient[`RestClient`] and `RestTestClient` have
@@ -144,22 +182,70 @@ provides two alternative ways to verify the response:



-[[resttestclient.workflow]]
+[[resttestclient-workflow]]
 === Built-in Assertions

 To use the built-in assertions, remain in the workflow after the call to `exchange()`, and
 use one of the expectation methods. For example:

-include-code::./RestClientWorkflowTests[tag=test,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+		.accept(MediaType.APPLICATION_JSON)
+		.exchange()
+		.expectStatus().isOk()
+		.expectHeader().contentType(MediaType.APPLICATION_JSON);
+----

+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+		.accept(MediaType.APPLICATION_JSON)
+		.exchange()
+		.expectStatus().isOk()
+		.expectHeader().contentType(MediaType.APPLICATION_JSON)
+----
+======

 If you would like for all expectations to be asserted even if one of them fails, you can
 use `expectAll(..)` instead of multiple chained `expect*(..)` calls. This feature is
 similar to the _soft assertions_ support in AssertJ and the `assertAll()` support in
 JUnit Jupiter.

-include-code::./RestClientWorkflowTests[tag=soft-assertions,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+		.accept(MediaType.APPLICATION_JSON)
+		.exchange()
+		.expectAll(
+			spec -> spec.expectStatus().isOk(),
+			spec -> spec.expectHeader().contentType(MediaType.APPLICATION_JSON)
+		);
+----

+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+		.accept(MediaType.APPLICATION_JSON)
+		.exchange()
+		.expectAll(
+			{ spec -> spec.expectStatus().isOk() },
+			{ spec -> spec.expectHeader().contentType(MediaType.APPLICATION_JSON) }
+		)
+----
+======

 You can then choose to decode the response body through one of the following:

@@ -170,34 +256,124 @@ You can then choose to decode the response body through one of the following:
 If the built-in assertions are insufficient, you can consume the object instead and
 perform any other assertions:

-include-code::./RestClientWorkflowTests[tag=consume,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+    client.get().uri("/persons/1")
+            .exchange()
+            .expectStatus().isOk()
+            .expectBody(Person.class)
+            .consumeWith(result -> {
+                // custom assertions (for example, AssertJ)...
+            });
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody<Person>()
+			.consumeWith {
+				// custom assertions (for example, AssertJ)...
+			}
+----
+======

 Or you can exit the workflow and obtain a `EntityExchangeResult`:

-include-code::./RestClientWorkflowTests[tag=result,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	EntityExchangeResult<Person> result = client.get().uri("/persons/1")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody(Person.class)
+			.returnResult();
+----

+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	val result = client.get().uri("/persons/1")
+			.exchange()
+			.expectStatus().isOk
+			.expectBody<Person>()
+			.returnResult()
+----
+======

 TIP: When you need to decode to a target type with generics, look for the overloaded methods
 that accept {spring-framework-api}/core/ParameterizedTypeReference.html[`ParameterizedTypeReference`]
 instead of `Class<T>`.


-[[resttestclient.no-content]]
+[[resttestclient-no-content]]
 ==== No Content

 If the response is not expected to have content, you can assert that as follows:

-include-code::./NoContentTests[tag=emptyBody,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.post().uri("/persons")
+			.body(person)
+			.exchange()
+			.expectStatus().isCreated()
+			.expectBody().isEmpty();
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.post().uri("/persons")
+			.body(person)
+			.exchange()
+			.expectStatus().isCreated()
+			.expectBody().isEmpty()
+----
+======

 If you want to ignore the response content, the following releases the content without any assertions:

-include-code::./NoContentTests[tag=ignoreBody,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/123")
+			.exchange()
+			.expectStatus().isNotFound()
+			.expectBody(Void.class);
+----

-NOTE: Consuming the response body (for example, with `expectBody`) is required if your tests are running with
-leak detection for pooled buffers. Without that, the tool will report buffers being leaked.
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/123")
+			.exchange()
+			.expectStatus().isNotFound
+			.expectBody<Unit>()
+----
+======


-[[resttestclient.json]]
+[[resttestclient-json]]
 ==== JSON Content

 You can use `expectBody()` without a target type to perform assertions on the raw
@@ -205,25 +381,126 @@ content rather than through higher level Object(s).

 To verify the full JSON content with https://jsonassert.skyscreamer.org[JSONAssert]:

-include-code::./JsonTests[tag=jsonBody,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody()
+			.json("{\"name\":\"Jane\"}")
+----

+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons/1")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody()
+			.json("{\"name\":\"Jane\"}")
+----
+======

 To verify JSON content with https://github.com/jayway/JsonPath[JSONPath]:

-include-code::./JsonTests[tag=jsonPath,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody()
+			.jsonPath("$[0].name").isEqualTo("Jane")
+			.jsonPath("$[1].name").isEqualTo("Jason");
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	client.get().uri("/persons")
+			.exchange()
+			.expectStatus().isOk()
+			.expectBody()
+			.jsonPath("$[0].name").isEqualTo("Jane")
+			.jsonPath("$[1].name").isEqualTo("Jason")
+----
+======


-[[resttestclient.assertj]]
+
+[[resttestclient-assertj]]
 === AssertJ Integration

 `RestTestClientResponse` is the main entry point for the AssertJ integration.
 It is an `AssertProvider` that wraps the `ResponseSpec` of an exchange in order to enable
 use of `assertThat()` statements. For example:

-include-code::./AssertJTests[tag=withSpec,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	ResponseSpec spec = client.get().uri("/persons").exchange();

+	RestTestClientResponse response = RestTestClientResponse.from(spec);
+	assertThat(response).hasStatusOk();
+	assertThat(response).hasContentTypeCompatibleWith(MediaType.TEXT_PLAIN);
+	// ...
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	val spec = client.get().uri("/persons").exchange()
+
+	val response = RestTestClientResponse.from(spec)
+	assertThat(response).hasStatusOk()
+	assertThat(response).hasContentTypeCompatibleWith(MediaType.TEXT_PLAIN)
+	// ...
+----
+======

 You can also use the built-in workflow first, and then obtain an `ExchangeResult` to wrap
 and continue with AssertJ. For example:

-include-code::./AssertJTests[tag=withResult,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	ExchangeResult result = client.get().uri("/persons").exchange()
+			. // ...
+			.returnResult();
+
+	RestTestClientResponse response = RestTestClientResponse.from(result);
+	assertThat(response).hasStatusOk();
+	assertThat(response).hasContentTypeCompatibleWith(MediaType.TEXT_PLAIN);
+	// ...
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	val result = client.get().uri("/persons").exchange()
+			. // ...
+			.returnResult()
+
+	val response = RestTestClientResponse.from(spec)
+	assertThat(response).hasStatusOk()
+	assertThat(response).hasContentTypeCompatibleWith(MediaType.TEXT_PLAIN)
+	// ...
+----
+======
@@ -62,6 +62,17 @@ script by setting a JVM system property named `spring.test.context.cache.maxSize
 alternative, you can set the same property via the
 xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism.

+As of Spring Framework 7.0, an application context stored in the context cache will be
+_paused_ when it is no longer actively in use and automatically _restarted_ the next time
+the context is retrieved from the cache. Specifically, the latter will restart all
+auto-startup beans in the application context, effectively restoring the lifecycle state.
+This ensures that background processes within the context are not actively running while
+the context is not used by tests. For example, JMS listener containers, scheduled tasks,
+and any other components in the context that implement `Lifecycle` or `SmartLifecycle`
+will be in a "stopped" state until the context is used again by a test. Note, however,
+that `SmartLifecycle` components can opt out of pausing by returning `false` from
+`SmartLifecycle#isPauseable()`.
+
 Since having a large number of application contexts loaded within a given test suite can
 cause the suite to take an unnecessarily long time to run, it is often beneficial to
 know exactly how many contexts have been loaded and cached. To view the statistics for
@@ -1,45 +0,0 @@
-[[testcontext-ctx-management-pausing]]
-= Context Pausing
-
-As of Spring Framework 7.0, an `ApplicationContext` stored in the context cache (see
-xref:testing/testcontext-framework/ctx-management/caching.adoc[Context Caching]) may be
-_paused_ when it is no longer actively in use and automatically _restarted_ the next time
-the context is retrieved from the cache. Specifically, the latter will restart all
-auto-startup beans in the application context, effectively restoring the lifecycle state.
-This ensures that background processes within the context are not actively running while
-the context is not used by tests. For example, JMS listener containers, scheduled tasks,
-and any other components in the context that implement `Lifecycle` or `SmartLifecycle`
-will be in a "stopped" state until the context is used again by a test. Note, however,
-that `SmartLifecycle` components can opt out of pausing by returning `false` from
-`SmartLifecycle#isPauseable()`.
-
-You can control whether inactive application contexts should be paused by setting the
-`PauseMode` to one of the following supported values.
-
-`ALWAYS` :: Always pause inactive application contexts.
-`ON_CONTEXT_SWITCH` :: Only pause inactive application contexts if the next context
-  retrieved from the context cache is a different context.
-`NEVER` :: Never pause inactive application contexts, effectively disabling the pausing
-  feature of the context cache.
-
-The `PauseMode` defaults to `ON_CONTEXT_SWITCH`, but it can be changed from the command
-line or a build script by setting a JVM system property named
-`spring.test.context.cache.pause` to one of the supported values (case insensitive). As
-an alternative, you can set the property via the
-xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism.
-
-For example, if you want inactive application contexts to always be paused, you can
-switch from the default `ON_CONTEXT_SWITCH` mode to `ALWAYS` by setting the
-`spring.test.context.cache.pause` system property to `always`.
-
-```shell
-Dspring.test.context.cache.pause=always
-```
-Similarly, if you encounter issues with `Lifecycle` components that cannot or should not
-opt out of pausing, or if you discover that your test suite runs more slowly due to the
-pausing and restarting of application contexts, you can disable the pausing feature by
-setting the `spring.test.context.cache.pause` system property to `never`.
-
-```shell
-Dspring.test.context.cache.pause=never
-```
@@ -8,15 +8,12 @@ in JUnit and TestNG.
 [[testcontext-junit-jupiter-extension]]
 == SpringExtension for JUnit Jupiter

-The `SpringExtension` integrates the Spring TestContext Framework into the JUnit Jupiter
-testing framework.
-
-NOTE: As of Spring Framework 7.0, the `SpringExtension` requires JUnit Jupiter 6.0 or higher.
-
-By annotating test classes with `@ExtendWith(SpringExtension.class)`, you can implement
-standard JUnit Jupiter-based unit and integration tests and simultaneously reap the
-benefits of the TestContext framework, such as support for loading application contexts,
-dependency injection of test instances, transactional test method execution, and so on.
+The Spring TestContext Framework offers full integration with the JUnit Jupiter testing
+framework, originally introduced in JUnit 5. By annotating test classes with
+`@ExtendWith(SpringExtension.class)`, you can implement standard JUnit Jupiter-based unit
+and integration tests and simultaneously reap the benefits of the TestContext framework,
+such as support for loading application contexts, dependency injection of test instances,
+transactional test method execution, and so on.

 Furthermore, thanks to the rich extension API in JUnit Jupiter, Spring provides the
 following features above and beyond the feature set that Spring supports for JUnit 4 and
@@ -25,7 +22,7 @@ TestNG:
 * Dependency injection for test constructors, test methods, and test lifecycle callback
  methods. See xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-di[Dependency
  Injection with the `SpringExtension`] for further details.
-* Powerful support for link:https://docs.junit.org/current/extensions/conditional-test-execution.html[conditional
+* Powerful support for link:https://junit.org/junit5/docs/current/user-guide/#extensions-conditions[conditional
  test execution] based on SpEL expressions, environment variables, system properties,
  and so on. See the documentation for `@EnabledIf` and `@DisabledIf` in
  xref:testing/annotations/integration-junit-jupiter.adoc[Spring JUnit Jupiter Testing Annotations]
@@ -163,7 +160,7 @@ for further details.
 === Dependency Injection with the `SpringExtension`

 The `SpringExtension` implements the
-link:https://docs.junit.org/current/extensions/parameter-resolution.html[`ParameterResolver`]
+link:https://junit.org/junit5/docs/current/user-guide/#extensions-parameter-resolution[`ParameterResolver`]
 extension API from JUnit Jupiter, which lets Spring provide dependency injection for test
 constructors, test methods, and test lifecycle callback methods.

@@ -392,17 +389,6 @@ any of its subclasses and nested classes. Thus, you may annotate a top-level tes
 with `@NestedTestConfiguration`, and that will apply to all of its nested test classes
 recursively.

-[NOTE]
-====
-As of Spring Framework 7.0, the `SpringExtension` uses a test-method scoped
-`ExtensionContext` within `@Nested` test class hierarchies by default. However, the
-`SpringExtension` can be configured to use a test-class scoped `ExtensionContext`.
-
-See the documentation for
-xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-springextensionconfig[`@SpringExtensionConfig`]
-for details.
-====
-
 [TIP]
 ====
 If you are developing a component that integrates with the Spring TestContext Framework
@@ -362,7 +362,7 @@ of `PlatformTransactionManager` within the test's `ApplicationContext`, you can
 qualifier by using `@Transactional("myTxMgr")` or `@Transactional(transactionManager =
 "myTxMgr")`, or `TransactionManagementConfigurer` can be implemented by an
 `@Configuration` class. Consult the
-{spring-framework-api}/test/context/transaction/TestContextTransactionUtils.html#retrieveTransactionManager(org.springframework.test.context.TestContext,java.lang.String)[javadoc
+{spring-framework-api}/test/context/transaction/TestContextTransactionUtils.html#retrieveTransactionManager-org.springframework.test.context.TestContext-java.lang.String-[javadoc
 for `TestContextTransactionUtils.retrieveTransactionManager()`] for details on the
 algorithm used to look up a transaction manager in the test's `ApplicationContext`.

@@ -75,7 +75,7 @@ infrastructure and controller declarations and use it to handle requests via moc
 and response objects, without a running server.

 For WebFlux, use the following where the Spring `ApplicationContext` is passed to
-{spring-framework-api}/web/server/adapter/WebHttpHandlerBuilder.html#applicationContext(org.springframework.context.ApplicationContext)[WebHttpHandlerBuilder]
+{spring-framework-api}/web/server/adapter/WebHttpHandlerBuilder.html#applicationContext-org.springframework.context.ApplicationContext-[WebHttpHandlerBuilder]
 to create the xref:web/webflux/reactive-spring.adoc#webflux-web-handler-api[WebHandler chain] to handle
 requests:

@@ -0,0 +1,186 @@
+[[web-integration]]
+= Other Web Frameworks
+
+This chapter details Spring's integration with third-party web frameworks.
+
+One of the core value propositions of the Spring Framework is that of enabling
+_choice_. In a general sense, Spring does not force you to use or buy into any
+particular architecture, technology, or methodology (although it certainly recommends
+some over others). This freedom to pick and choose the architecture, technology, or
+methodology that is most relevant to a developer and their development team is
+arguably most evident in the web area, where Spring provides its own web frameworks
+(xref:web/webmvc.adoc#mvc[Spring MVC] and xref:web/webflux.adoc#webflux[Spring WebFlux])
+while, at the same time, supporting integration with a number of popular third-party
+web frameworks.
+
+
+[[web-integration-common]]
+== Common Configuration
+
+Before diving into the integration specifics of each supported web framework, let us
+first take a look at common Spring configuration that is not specific to any one web
+framework. (This section is equally applicable to Spring's own web framework variants.)
+
+One of the concepts (for want of a better word) espoused by Spring's lightweight
+application model is that of a layered architecture. Remember that in a "classic"
+layered architecture, the web layer is but one of many layers. It serves as one of the
+entry points into a server-side application, and it delegates to service objects
+(facades) that are defined in a service layer to satisfy business-specific (and
+presentation-technology agnostic) use cases. In Spring, these service objects, any other
+business-specific objects, data-access objects, and others exist in a distinct "business
+context", which contains no web or presentation layer objects (presentation objects,
+such as Spring MVC controllers, are typically configured in a distinct "presentation
+context"). This section details how you can configure a Spring container (a
+`WebApplicationContext`) that contains all of the 'business beans' in your application.
+
+Moving on to specifics, all you need to do is declare a
+{spring-framework-api}/web/context/ContextLoaderListener.html[`ContextLoaderListener`]
+in the standard Jakarta EE servlet `web.xml` file of your web application and add a
+`contextConfigLocation` `<context-param/>` section (in the same file) that defines which
+set of Spring XML configuration files to load.
+
+Consider the following `<listener/>` configuration:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<listener>
+		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
+	</listener>
+----
+
+Further consider the following `<context-param/>` configuration:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<context-param>
+		<param-name>contextConfigLocation</param-name>
+		<param-value>/WEB-INF/applicationContext*.xml</param-value>
+	</context-param>
+----
+
+If you do not specify the `contextConfigLocation` context parameter, the
+`ContextLoaderListener` looks for a file called `/WEB-INF/applicationContext.xml` to
+load. Once the context files are loaded, Spring creates a
+{spring-framework-api}/web/context/WebApplicationContext.html[`WebApplicationContext`]
+object based on the bean definitions and stores it in the `ServletContext` of the web
+application.
+
+All Java web frameworks are built on top of the Servlet API, so you can use the
+following code snippet to get access to this "business context" `ApplicationContext`
+created by the `ContextLoaderListener`.
+
+The following example shows how to get the `WebApplicationContext`:
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);
+----
+
+The
+{spring-framework-api}/web/context/support/WebApplicationContextUtils.html[`WebApplicationContextUtils`]
+class is for convenience, so you need not remember the name of the `ServletContext`
+attribute. Its `getWebApplicationContext()` method returns `null` if an object
+does not exist under the `WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE`
+key. Rather than risk getting `NullPointerExceptions` in your application, it is better
+to use the `getRequiredWebApplicationContext()` method. This method throws an exception
+when the `ApplicationContext` is missing.
+
+Once you have a reference to the `WebApplicationContext`, you can retrieve beans by their
+name or type. Most developers retrieve beans by name and then cast them to one of their
+implemented interfaces.
+
+Fortunately, most of the frameworks in this section have simpler ways of looking up beans.
+Not only do they make it easy to get beans from a Spring container, but they also let you
+use dependency injection on their controllers. Each web framework section has more detail
+on its specific integration strategies.
+
+
+[[jsf]]
+== JSF
+
+JavaServer Faces (JSF) is the JCP's standard component-based, event-driven web
+user interface framework. It is an official part of the Jakarta EE umbrella but also
+individually usable, for example, through embedding Mojarra or MyFaces within Tomcat.
+
+Please note that recent versions of JSF became closely tied to CDI infrastructure
+in application servers, with some new JSF functionality only working in such an
+environment. Spring's JSF support is not actively evolved anymore and primarily
+exists for migration purposes when modernizing older JSF-based applications.
+
+The key element in Spring's JSF integration is the JSF `ELResolver` mechanism.
+
+[[jsf-springbeanfaceselresolver]]
+=== Spring Bean Resolver
+
+`SpringBeanFacesELResolver` is a JSF compliant `ELResolver` implementation,
+integrating with the standard Unified EL as used by JSF and JSP. It delegates to
+Spring's "business context" `WebApplicationContext` first and then to the
+default resolver of the underlying JSF implementation.
+
+Configuration-wise, you can define `SpringBeanFacesELResolver` in your JSF
+`faces-context.xml` file, as the following example shows:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<faces-config>
+		<application>
+			<el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
+			...
+		</application>
+	</faces-config>
+----
+
+[[jsf-facescontextutils]]
+=== Using `FacesContextUtils`
+
+A custom `ELResolver` works well when mapping your properties to beans in
+`faces-config.xml`, but, at times, you may need to explicitly grab a bean.
+The {spring-framework-api}/web/jsf/FacesContextUtils.html[`FacesContextUtils`]
+class makes this easy. It is similar to `WebApplicationContextUtils`, except that
+it takes a `FacesContext` parameter rather than a `ServletContext` parameter.
+
+The following example shows how to use `FacesContextUtils`:
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	ApplicationContext ctx = FacesContextUtils.getWebApplicationContext(FacesContext.getCurrentInstance());
+----
+
+
+[[struts]]
+== Apache Struts
+
+Invented by Craig McClanahan, https://struts.apache.org[Struts] is an open-source project
+hosted by the Apache Software Foundation. Struts 1.x greatly simplified the
+JSP/Servlet programming paradigm and won over many developers who were using proprietary
+frameworks. It simplified the programming model; it was open source; and it had a large
+community, which let the project grow and become popular among Java web developers.
+
+As a successor to the original Struts 1.x, check out Struts 2.x or more recent versions
+as well as the Struts-provided
+https://struts.apache.org/plugins/spring/[Spring Plugin] for built-in Spring integration.
+
+
+[[tapestry]]
+== Apache Tapestry
+
+https://tapestry.apache.org/[Tapestry] is a "Component oriented framework for creating
+dynamic, robust, highly scalable web applications in Java."
+
+While Spring has its own xref:web/webmvc.adoc#mvc[powerful web layer], there are a number of unique
+advantages to building an enterprise Java application by using a combination of Tapestry
+for the web user interface and the Spring container for the lower layers.
+
+For more information, see Tapestry's dedicated
+https://tapestry.apache.org/integrating-with-spring-framework.html[integration module for Spring].
+
+
+[[web-integration-resources]]
+== Further Resources
+
+The following links go to further resources about the various web frameworks described in
+this chapter.
+
+* The https://www.oracle.com/java/technologies/javaserverfaces.html[JSF] homepage
+* The https://struts.apache.org/[Struts] homepage
+* The https://tapestry.apache.org/[Tapestry] homepage
@@ -39,12 +39,12 @@ required CORS response headers set.

 In order to enable cross-origin requests (that is, the `Origin` header is present and
 differs from the host of the request), you need to have some explicitly declared CORS
-configuration. If no matching CORS configuration is found, no CORS headers are added to
-the responses to preflight, simple and actual CORS requests and, consequently, browsers
-reject them.
+configuration. If no matching CORS configuration is found, preflight requests are
+rejected. No CORS headers are added to the responses of simple and actual CORS requests
+and, consequently, browsers reject them.

 Each `HandlerMapping` can be
-{spring-framework-api}/web/reactive/handler/AbstractHandlerMapping.html#setCorsConfigurations(java.util.Map)[configured]
+{spring-framework-api}/web/reactive/handler/AbstractHandlerMapping.html#setCorsConfigurations-java.util.Map-[configured]
 individually with URL pattern-based `CorsConfiguration` mappings. In most cases, applications
 use the WebFlux Java configuration to declare such mappings, which results in a single,
 global map passed to all `HandlerMapping` implementations.
@@ -57,7 +57,7 @@ class- or method-level `@CrossOrigin` annotations (other handlers can implement
 The rules for combining global and local configuration are generally additive -- for example,
 all global and all local origins. For those attributes where only a single value can be
 accepted, such as `allowCredentials` and `maxAge`, the local overrides the global value. See
-{spring-framework-api}/web/cors/CorsConfiguration.html#combine(org.springframework.web.cors.CorsConfiguration)[`CorsConfiguration#combine(CorsConfiguration)`]
+{spring-framework-api}/web/cors/CorsConfiguration.html#combine-org.springframework.web.cors.CorsConfiguration-[`CorsConfiguration#combine(CorsConfiguration)`]
 for more details.

 [TIP]
@@ -305,6 +305,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	public class WebConfig implements WebFluxConfigurer {

 		@Override
@@ -327,6 +328,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	class WebConfig : WebFluxConfigurer {

 		override fun addCorsMappings(registry: CorsRegistry) {
@@ -13,9 +13,9 @@ the same xref:web/webflux/reactive-spring.adoc[Reactive Core] foundation.
 == Overview
 [.small]#xref:web/webmvc-functional.adoc#webmvc-fn-overview[See equivalent in the Servlet stack]#

-In WebFlux.fn, an HTTP request is handled with a `HandlerFunction`: a function that takes a
+In WebFlux.fn, an HTTP request is handled with a `HandlerFunction`: a function that takes
 `ServerRequest` and returns a delayed `ServerResponse` (i.e. `Mono<ServerResponse>`).
-Both the request and the response object have immutable contracts that offer convenient
+Both the request and the response object have immutable contracts that offer JDK 8-friendly
 access to the HTTP request and response.
 `HandlerFunction` is the equivalent of the body of a `@RequestMapping` method in the
 annotation-based programming model.
@@ -117,13 +117,13 @@ Most applications can run through the WebFlux Java configuration, see xref:web/w
 == HandlerFunction
 [.small]#xref:web/webmvc-functional.adoc#webmvc-fn-handler-functions[See equivalent in the Servlet stack]#

-`ServerRequest` and `ServerResponse` are immutable interfaces that offer convenient
+`ServerRequest` and `ServerResponse` are immutable interfaces that offer JDK 8-friendly
 access to the HTTP request and response.
 Both request and response provide {reactive-streams-site}[Reactive Streams] back pressure
 against the body streams.
 The request body is represented with a Reactor `Flux` or `Mono`.
 The response body is represented with any Reactive Streams `Publisher`, including `Flux` and `Mono`.
-For more on that, see xref:web/webflux-reactive-libraries.adoc[Reactive Libraries].
+For more on that, see xref:web-reactive.adoc#webflux-reactive-libraries[Reactive Libraries].

 [[webflux-fn-request]]
 === ServerRequest
@@ -235,14 +235,87 @@ val map = request.awaitMultipartData()

 The following example shows how to access multipart data, one at a time, in streaming fashion:

-include-code::./PartEventHandler[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+Flux<PartEvent> allPartEvents = request.bodyToFlux(PartEvent.class);
+allPartsEvents.windowUntil(PartEvent::isLast)
+      .concatMap(p -> p.switchOnFirst((signal, partEvents) -> {
+          if (signal.hasValue()) {
+              PartEvent event = signal.get();
+              if (event instanceof FormPartEvent formEvent) {
+                  String value = formEvent.value();
+                  // handle form field
+              }
+              else if (event instanceof FilePartEvent fileEvent) {
+                  String filename = fileEvent.filename();
+                  Flux<DataBuffer> contents = partEvents.map(PartEvent::content);
+                  // handle file upload
+              }
+              else {
+                  return Mono.error(new RuntimeException("Unexpected event: " + event));
+              }
+          }
+          else {
+              return partEvents; // either complete or error signal
+          }
+      }));
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+val parts = request.bodyToFlux<PartEvent>()
+allPartsEvents.windowUntil(PartEvent::isLast)
+    .concatMap {
+        it.switchOnFirst { signal, partEvents ->
+            if (signal.hasValue()) {
+                val event = signal.get()
+                if (event is FormPartEvent) {
+                    val value: String = event.value();
+                    // handle form field
+                } else if (event is FilePartEvent) {
+                    val filename: String = event.filename();
+                    val contents: Flux<DataBuffer> = partEvents.map(PartEvent::content);
+                    // handle file upload
+                } else {
+                    return Mono.error(RuntimeException("Unexpected event: " + event));
+                }
+            } else {
+                return partEvents; // either complete or error signal
+            }
+        }
+    }
+}
+----
+======

 NOTE: The body contents of the `PartEvent` objects must be completely consumed, relayed, or released to avoid memory leaks.

-The following shows how to bind request parameters, URI variables, or headers via `DataBinder`,
-and also shows how to customize the `DataBinder`:
+The following shows how to bind request parameters, including an optional `DataBinder` customization:
+
+[tabs]
+======
+Java::
+
+[source,java]
+----
+Pet pet = request.bind(Pet.class, dataBinder -> dataBinder.setAllowedFields("name"));
+----
+
+Kotlin::
+
+[source,kotlin]
+----
+val pet = request.bind(Pet::class.java, {dataBinder -> dataBinder.setAllowedFields("name")})
+----
+======
+

-include-code::./RequestHandler[tag=snippet,indent=0]

 [[webflux-fn-response]]
 === ServerResponse
@@ -252,7 +325,24 @@ a `build` method to create it. You can use the builder to set the response statu
 headers, or to provide a body. The following example creates a 200 (OK) response with JSON
 content:

-include-code::./ResponseHandler[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java]
+----
+Mono<Person> person = ...
+ServerResponse.ok().contentType(MediaType.APPLICATION_JSON).body(person, Person.class);
+----
+
+Kotlin::
+
+[source,kotlin]
+----
+val person: Person = ...
+ServerResponse.ok().contentType(MediaType.APPLICATION_JSON).bodyValue(person)
+----
+======

 The following example shows how to build a 201 (CREATED) response with a `Location` header and no body:

@@ -263,7 +353,7 @@ Java::
 [source,java]
 ----
 URI location = ...
-return ServerResponse.created(location).build();
+ServerResponse.created(location).build();
 ----

 Kotlin::
@@ -271,7 +361,7 @@ Kotlin::
 [source,kotlin]
 ----
 val location: URI = ...
-return ServerResponse.created(location).build()
+ServerResponse.created(location).build()
 ----
 ======

@@ -284,14 +374,14 @@ Java::
 +
 [source,java]
 ----
-return ServerResponse.ok().hint(JacksonCodecSupport.JSON_VIEW_HINT, MyJacksonView.class).body(...);
+ServerResponse.ok().hint(Jackson2CodecSupport.JSON_VIEW_HINT, MyJacksonView.class).body(...);
 ----

 Kotlin::
 +
 [source,kotlin]
 ----
-return ServerResponse.ok().hint(JacksonCodecSupport.JSON_VIEW_HINT, MyJacksonView::class.java).body(...)
+ServerResponse.ok().hint(Jackson2CodecSupport.JSON_VIEW_HINT, MyJacksonView::class.java).body(...)
 ----
 ======

@@ -326,7 +416,87 @@ Therefore, it is useful to group related handler functions together into a handl
 has a similar role as  `@Controller` in an annotation-based application.
 For example, the following class exposes a reactive `Person` repository:

-include-code::./PersonHandler[tag=snippet,indent=0]
+--
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+import static org.springframework.http.MediaType.APPLICATION_JSON;
+import static org.springframework.web.reactive.function.server.ServerResponse.ok;
+
+public class PersonHandler {
+
+	private final PersonRepository repository;
+
+	public PersonHandler(PersonRepository repository) {
+		this.repository = repository;
+	}
+
+	public Mono<ServerResponse> listPeople(ServerRequest request) { // <1>
+		Flux<Person> people = repository.allPeople();
+		return ok().contentType(APPLICATION_JSON).body(people, Person.class);
+	}
+
+	public Mono<ServerResponse> createPerson(ServerRequest request) { // <2>
+		Mono<Person> person = request.bodyToMono(Person.class);
+		return ok().build(repository.savePerson(person));
+	}
+
+	public Mono<ServerResponse> getPerson(ServerRequest request) { // <3>
+		int personId = Integer.valueOf(request.pathVariable("id"));
+		return repository.getPerson(personId)
+			.flatMap(person -> ok().contentType(APPLICATION_JSON).bodyValue(person))
+			.switchIfEmpty(ServerResponse.notFound().build());
+	}
+}
+----
+<1> `listPeople` is a handler function that returns all `Person` objects found in the repository as
+JSON.
+<2> `createPerson` is a handler function that stores a new `Person` contained in the request body.
+Note that `PersonRepository.savePerson(Person)` returns `Mono<Void>`: an empty `Mono` that emits
+a completion signal when the person has been read from the request and stored. So we use the
+`build(Publisher<Void>)` method to send a response when that completion signal is received (that is,
+when the `Person` has been saved).
+<3> `getPerson` is a handler function that returns a single person, identified by the `id` path
+variable. We retrieve that `Person` from the repository and create a JSON response, if it is
+found. If it is not found, we use `switchIfEmpty(Mono<T>)` to return a 404 Not Found response.
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	class PersonHandler(private val repository: PersonRepository) {
+
+		suspend fun listPeople(request: ServerRequest): ServerResponse { // <1>
+			val people: Flow<Person> = repository.allPeople()
+			return ok().contentType(APPLICATION_JSON).bodyAndAwait(people);
+		}
+
+		suspend fun createPerson(request: ServerRequest): ServerResponse { // <2>
+			val person = request.awaitBody<Person>()
+			repository.savePerson(person)
+			return ok().buildAndAwait()
+		}
+
+		suspend fun getPerson(request: ServerRequest): ServerResponse { // <3>
+			val personId = request.pathVariable("id").toInt()
+			return repository.getPerson(personId)?.let { ok().contentType(APPLICATION_JSON).bodyValueAndAwait(it) }
+					?: ServerResponse.notFound().buildAndAwait()
+
+		}
+	}
+----
+<1> `listPeople` is a handler function that returns all `Person` objects found in the repository as
+JSON.
+<2> `createPerson` is a handler function that stores a new `Person` contained in the request body.
+Note that `PersonRepository.savePerson(Person)` is a suspending function with no return type.
+<3> `getPerson` is a handler function that returns a single person, identified by the `id` path
+variable. We retrieve that `Person` from the repository and create a JSON response, if it is
+found. If it is not found, we return a 404 Not Found response.
+======
+--

 [[webflux-fn-handler-validation]]
 === Validation
@@ -335,7 +505,66 @@ A functional endpoint can use Spring's xref:web/webmvc/mvc-config/validation.ado
 apply validation to the request body. For example, given a custom Spring
 xref:web/webmvc/mvc-config/validation.adoc[Validator] implementation for a `Person`:

-include-code::./PersonHandler[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	public class PersonHandler {
+
+		private final Validator validator = new PersonValidator(); // <1>
+
+		// ...
+
+		public Mono<ServerResponse> createPerson(ServerRequest request) {
+			Mono<Person> person = request.bodyToMono(Person.class).doOnNext(this::validate); // <2>
+			return ok().build(repository.savePerson(person));
+		}
+
+		private void validate(Person person) {
+			Errors errors = new BeanPropertyBindingResult(person, "person");
+			validator.validate(person, errors);
+			if (errors.hasErrors()) {
+				throw new ServerWebInputException(errors.toString()); // <3>
+			}
+		}
+	}
+----
+<1> Create `Validator` instance.
+<2> Apply validation.
+<3> Raise exception for a 400 response.
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	class PersonHandler(private val repository: PersonRepository) {
+
+		private val validator = PersonValidator() // <1>
+
+		// ...
+
+		suspend fun createPerson(request: ServerRequest): ServerResponse {
+			val person = request.awaitBody<Person>()
+			validate(person) // <2>
+			repository.savePerson(person)
+			return ok().buildAndAwait()
+		}
+
+		private fun validate(person: Person) {
+			val errors: Errors = BeanPropertyBindingResult(person, "person");
+			validator.validate(person, errors);
+			if (errors.hasErrors()) {
+				throw ServerWebInputException(errors.toString()) // <3>
+			}
+		}
+	}
+----
+<1> Create `Validator` instance.
+<2> Apply validation.
+<3> Raise exception for a 400 response.
+======

 Handlers can also use the standard bean validation API (JSR-303) by creating and injecting
 a global `Validator` instance based on `LocalValidatorFactoryBean`.
@@ -373,7 +602,28 @@ path, headers, xref:#api-version[API version], and more.

 The following example uses an `Accept` header, request predicate:

-include-code::./RouterConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	RouterFunction<ServerResponse> route = RouterFunctions.route()
+		.GET("/hello-world", accept(MediaType.TEXT_PLAIN),
+			request -> ServerResponse.ok().bodyValue("Hello World")).build();
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	val route = coRouter {
+		GET("/hello-world", accept(TEXT_PLAIN)) {
+			ServerResponse.ok().bodyValueAndAwait("Hello World")
+		}
+	}
+----
+======

 You can compose multiple request predicates together by using:

@@ -408,7 +658,61 @@ There are also other ways to compose multiple router functions together:

 The following example shows the composition of four routes:

-include-code::./RouterConfiguration[tag=snippet,indent=0]
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+import static org.springframework.http.MediaType.APPLICATION_JSON;
+import static org.springframework.web.reactive.function.server.RequestPredicates.*;
+
+PersonRepository repository = ...
+PersonHandler handler = new PersonHandler(repository);
+
+RouterFunction<ServerResponse> otherRoute = ...
+
+RouterFunction<ServerResponse> route = route()
+	.GET("/person/{id}", accept(APPLICATION_JSON), handler::getPerson) // <1>
+	.GET("/person", accept(APPLICATION_JSON), handler::listPeople) // <2>
+	.POST("/person", handler::createPerson) // <3>
+	.add(otherRoute) // <4>
+	.build();
+----
+<1> pass:q[`GET /person/{id}`] with an `Accept` header that matches JSON is routed to
+`PersonHandler.getPerson`
+<2> `GET /person` with an `Accept` header that matches JSON is routed to
+`PersonHandler.listPeople`
+<3> `POST /person` with no additional predicates is mapped to
+`PersonHandler.createPerson`, and
+<4> `otherRoute` is a router function that is created elsewhere, and added to the route built.
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	import org.springframework.http.MediaType.APPLICATION_JSON
+
+	val repository: PersonRepository = ...
+	val handler = PersonHandler(repository);
+
+	val otherRoute: RouterFunction<ServerResponse> = coRouter {  }
+
+	val route = coRouter {
+		GET("/person/{id}", accept(APPLICATION_JSON), handler::getPerson) // <1>
+		GET("/person", accept(APPLICATION_JSON), handler::listPeople) // <2>
+		POST("/person", handler::createPerson) // <3>
+	}.and(otherRoute) // <4>
+----
+<1> pass:q[`GET /person/{id}`] with an `Accept` header that matches JSON is routed to
+`PersonHandler.getPerson`
+<2> `GET /person` with an `Accept` header that matches JSON is routed to
+`PersonHandler.listPeople`
+<3> `POST /person` with no additional predicates is mapped to
+`PersonHandler.createPerson`, and
+<4> `otherRoute` is a router function that is created elsewhere, and added to the route built.
+======

 [[nested-routes]]
 === Nested Routes
@@ -506,7 +810,7 @@ Java::
 ----
 	RouterFunction<ServerResponse> route = RouterFunctions.route()
 		.GET("/hello-world", version("1.2"),
-			request -> ServerResponse.ok().bodyValue("Hello World")).build();
+			request -> ServerResponse.ok().body("Hello World")).build();
 ----

 Kotlin::
@@ -639,6 +943,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	public class WebConfig implements WebFluxConfigurer {

 		@Bean
@@ -675,6 +980,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	class WebConfig : WebFluxConfigurer {

 		@Bean
@@ -742,9 +1048,9 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	val route = router {
-		("/person" and accept(APPLICATION_JSON)).nest {
+		"/person".nest {
 			GET("/{id}", handler::getPerson)
-			GET(handler::listPeople)
+			GET("", handler::listPeople)
 			before { // <1>
 				ServerRequest.from(it)
 						.header("X-RequestHeader", "Value").build()
@@ -771,7 +1077,54 @@ Now we can add a simple security filter to our route, assuming that we have a `S
 can determine whether a particular path is allowed.
 The following example shows how to do so:

-include-code::./RouterConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	SecurityManager securityManager = ...
+
+	RouterFunction<ServerResponse> route = route()
+		.path("/person", b1 -> b1
+			.nest(accept(APPLICATION_JSON), b2 -> b2
+				.GET("/{id}", handler::getPerson)
+				.GET(handler::listPeople))
+			.POST(handler::createPerson))
+		.filter((request, next) -> {
+			if (securityManager.allowAccessTo(request.path())) {
+				return next.handle(request);
+			}
+			else {
+				return ServerResponse.status(UNAUTHORIZED).build();
+			}
+		})
+		.build();
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	val securityManager: SecurityManager = ...
+
+	val route = router {
+			("/person" and accept(APPLICATION_JSON)).nest {
+				GET("/{id}", handler::getPerson)
+				GET("", handler::listPeople)
+				POST(handler::createPerson)
+				filter { request, next ->
+					if (securityManager.allowAccessTo(request.path())) {
+						next(request)
+					}
+					else {
+						status(UNAUTHORIZED).build();
+					}
+				}
+			}
+		}
+----
+======

 The preceding example demonstrates that invoking the `next.handle(ServerRequest)` is optional.
 We only let the handler function be run when access is allowed.
@@ -56,7 +56,8 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	public class WebConfiguration implements WebFluxConfigurer {
+	@EnableWebFlux
+	public class WebConfig implements WebFluxConfigurer {

 		@Override
 		public void configureViewResolvers(ViewResolverRegistry registry) {
@@ -79,7 +80,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	class WebConfiguration : WebFluxConfigurer {
+	@EnableWebFlux
+	class WebConfig : WebFluxConfigurer {

 		override fun configureViewResolvers(registry: ViewResolverRegistry) {
 			registry.freeMarker()
@@ -117,7 +119,8 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	public class WebConfiguration implements WebFluxConfigurer {
+	@EnableWebFlux
+	public class WebConfig implements WebFluxConfigurer {

 		// ...

@@ -139,7 +142,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	class WebConfiguration : WebFluxConfigurer {
+	@EnableWebFlux
+	class WebConfig : WebFluxConfigurer {

 		// ...

@@ -206,8 +210,13 @@ The following table shows the templating libraries that we have tested on differ
 [%header]
 |===
 |Scripting Library |Scripting Engine
+|https://handlebarsjs.com/[Handlebars] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://mustache.github.io/[Mustache] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://react.dev/[React] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://ejs.co/[EJS] |https://openjdk.java.net/projects/nashorn/[Nashorn]
 |https://docs.ruby-lang.org/en/master/ERB.html[ERB] |https://www.jruby.org[JRuby]
 |https://docs.python.org/2/library/string.html#template-strings[String templates] |https://www.jython.org/[Jython]
+|https://github.com/sdeleuze/kotlin-script-templating[Kotlin Script templating] |{kotlin-site}[Kotlin]
 |===

 TIP: The basic rule for integrating any other script engine is that it must implement the
@@ -219,8 +228,17 @@ TIP: The basic rule for integrating any other script engine is that it must impl

 You need to have the script engine on your classpath, the details of which vary by script engine:

+* The https://openjdk.java.net/projects/nashorn/[Nashorn] JavaScript engine is provided with
+Java 8+. Using the latest update release available is highly recommended.
 * https://www.jruby.org[JRuby] should be added as a dependency for Ruby support.
 * https://www.jython.org[Jython] should be added as a dependency for Python support.
+* `org.jetbrains.kotlin:kotlin-script-util` dependency and a `META-INF/services/javax.script.ScriptEngineFactory`
+ file containing a `org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory`
+ line should be added for Kotlin script support. See
+ https://github.com/sdeleuze/kotlin-script-templating[this example] for more detail.
+
+You need to have the script templating library. One way to do that for JavaScript is
+through https://www.webjars.org/[WebJars].

 [[webflux-view-script-integrate]]
 === Script Templates
@@ -228,7 +246,7 @@ You need to have the script engine on your classpath, the details of which vary

 You can declare a `ScriptTemplateConfigurer` bean to specify the script engine to use,
 the script files to load, what function to call to render templates, and so on.
-The following example uses the Jython Python engine:
+The following example uses Mustache templates and the Nashorn JavaScript engine:

 [tabs]
 ======
@@ -237,7 +255,8 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	public class WebConfiguration implements WebFluxConfigurer {
+	@EnableWebFlux
+	public class WebConfig implements WebFluxConfigurer {

 		@Override
 		public void configureViewResolvers(ViewResolverRegistry registry) {
@@ -247,8 +266,9 @@ Java::
 		@Bean
 		public ScriptTemplateConfigurer configurer() {
 			ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
-			configurer.setEngineName("jython");
-			configurer.setScripts("render.py");
+			configurer.setEngineName("nashorn");
+			configurer.setScripts("mustache.js");
+			configurer.setRenderObject("Mustache");
 			configurer.setRenderFunction("render");
 			return configurer;
 		}
@@ -260,7 +280,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
-	class WebConfiguration : WebFluxConfigurer {
+	@EnableWebFlux
+	class WebConfig : WebFluxConfigurer {

 		override fun configureViewResolvers(registry: ViewResolverRegistry) {
 			registry.scriptTemplate()
@@ -268,8 +289,9 @@ Kotlin::

 		@Bean
 		fun configurer() = ScriptTemplateConfigurer().apply {
-			engineName = "jython"
-			setScripts("render.py")
+			engineName = "nashorn"
+			setScripts("mustache.js")
+			renderObject = "Mustache"
 			renderFunction = "render"
 		}
 	}
@@ -283,7 +305,94 @@ The `render` function is called with the following parameters:
 * `RenderingContext renderingContext`: The
  {spring-framework-api}/web/servlet/view/script/RenderingContext.html[`RenderingContext`]
  that gives access to the application context, the locale, the template loader, and the
-  URL
+  URL (since 5.0)
+
+`Mustache.render()` is natively compatible with this signature, so you can call it directly.
+
+If your templating technology requires some customization, you can provide a script that
+implements a custom render function. For example, https://handlebarsjs.com[Handlerbars]
+needs to compile templates before using them and requires a
+https://en.wikipedia.org/wiki/Polyfill[polyfill] in order to emulate some
+browser facilities not available in the server-side script engine.
+The following example shows how to set a custom render function:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebFlux
+	public class WebConfig implements WebFluxConfigurer {
+
+		@Override
+		public void configureViewResolvers(ViewResolverRegistry registry) {
+			registry.scriptTemplate();
+		}
+
+		@Bean
+		public ScriptTemplateConfigurer configurer() {
+			ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
+			configurer.setEngineName("nashorn");
+			configurer.setScripts("polyfill.js", "handlebars.js", "render.js");
+			configurer.setRenderFunction("render");
+			configurer.setSharedEngine(false);
+			return configurer;
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebFlux
+	class WebConfig : WebFluxConfigurer {
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			registry.scriptTemplate()
+		}
+
+		@Bean
+		fun configurer() = ScriptTemplateConfigurer().apply {
+			engineName = "nashorn"
+			setScripts("polyfill.js", "handlebars.js", "render.js")
+			renderFunction = "render"
+			isSharedEngine = false
+		}
+	}
+----
+======
+
+NOTE: Setting the `sharedEngine` property to `false` is required when using non-thread-safe
+script engines with templating libraries not designed for concurrency, such as Handlebars or
+React running on Nashorn. In that case, Java SE 8 update 60 is required, due to
+https://bugs.openjdk.java.net/browse/JDK-8076099[this bug], but it is generally
+recommended to use a recent Java SE patch release in any case.
+
+`polyfill.js` defines only the `window` object needed by Handlebars to run properly,
+as the following snippet shows:
+
+[source,javascript,indent=0,subs="verbatim,quotes"]
+----
+	var window = {};
+----
+
+This basic `render.js` implementation compiles the template before using it. A production
+ready implementation should also store and reused cached templates or pre-compiled templates.
+This can be done on the script side, as well as any customization you need (managing
+template engine configuration for example).
+The following example shows how compile a template:
+
+[source,javascript,indent=0,subs="verbatim,quotes"]
+----
+	function render(template, model) {
+		var compiledTemplate = Handlebars.compile(template);
+		return compiledTemplate(model);
+	}
+----

 Check out the Spring Framework unit tests,
 {spring-framework-code}/spring-webflux/src/test/java/org/springframework/web/reactive/result/view/script[Java], and
@@ -373,7 +482,7 @@ purposes, it is useful to be able to alternate between rendering a model with an
 or as other formats (such as JSON or XML), depending on the content type requested by the client.
 To support doing so, Spring WebFlux provides the `HttpMessageWriterView`, which you can use to
 plug in any of the available xref:web/webflux/reactive-spring.adoc#webflux-codecs[Codecs] from
-`spring-web`, such as `JacksonJsonEncoder`, `JacksonSmileEncoder`, or `Jaxb2XmlEncoder`.
+`spring-web`, such as `Jackson2JsonEncoder`, `Jackson2SmileEncoder`, or `Jaxb2XmlEncoder`.

 Unlike other view technologies, `HttpMessageWriterView` does not require a `ViewResolver` but is
 instead xref:web/webflux/config.adoc#webflux-config-view-resolvers[configured] as a default view.
@@ -18,8 +18,8 @@ You can also use `WebClient.builder()` with further options:
 * `exchangeStrategies`: HTTP message reader/writer customizations.
 * `clientConnector`: HTTP client library settings.
 * `apiVersionInserter`: to insert API version values in the request
-* `observationRegistry`: the registry to use for enabling xref:integration/observability.adoc#observability.http-client.webclient[Observability support].
-* `observationConvention`: xref:integration/observability.adoc#observability.config[an optional, custom convention to extract metadata] for recorded observations.
+* `observationRegistry`: the registry to use for enabling xref:integration/observability.adoc#http-client.webclient[Observability support].
+* `observationConvention`: xref:integration/observability.adoc#config[an optional, custom convention to extract metadata] for recorded observations.

 For example:

@@ -32,9 +32,9 @@ any `@RequestMapping` method to render an RFC 9457 response. This is processed a
 - The `status` property of `ProblemDetail` determines the HTTP status.
 - The `instance` property of `ProblemDetail` is set from the current URL path, if not
 already set.
- The Jackson JSON and XML message converters use "application/problem+json" or
-"application/problem+xml" respectively as the producible media types for `ProblemDetail`
-to ensure they are favored for content negotiation.
+- For content negotiation, the Jackson `HttpMessageConverter` prefers
+"application/problem+json" over "application/json" when rendering a `ProblemDetail`,
+and also falls back on it if no compatible media type is found.

 To enable RFC 9457 responses for Spring WebFlux exceptions and for any
 `ErrorResponseException`, extend `ResponseEntityExceptionHandler` and declare it as an
@@ -66,13 +66,6 @@ from an existing `ProblemDetail`. This could be done centrally, for example, fro
 `@ControllerAdvice` such as `ResponseEntityExceptionHandler` that re-creates the
 `ProblemDetail` of an exception into a subclass with the additional non-standard fields.

-TIP: In Spring Boot, the `spring.webflux.problemdetails.enabled` property autoconfigures
-a `ResponseEntityExceptionHandler` that handles built-in exceptions with problem details.
-In that case, you may prefer to create another `@ControllerAdvice` instead of extending
-`ResponseEntityExceptionHandler` if you want to take over the handling of a specific
-built-in exception. You'll need to ensure your handler is ordered ahead of the one
-configured by Spring Boot whose order is 0.
-

 [[webflux-ann-rest-exceptions-i18n]]
 == Customization and i18n
@@ -142,10 +135,6 @@ Message codes and arguments for each error are also resolved via `MessageSource`
 | `+{0}+` the list of global errors, `+{1}+` the list of field errors.
 Message codes and arguments for each error are also resolved via `MessageSource`.

-| `NoResourceFoundException`
-| (default)
-| `+{0}+` the request path (or portion of) used to find a resource
-
 |===

 NOTE: Unlike other exceptions, the message arguments for
@@ -334,8 +334,19 @@ Kotlin::
 `ServerCodecConfigurer` provides a set of default readers and writers. You can use it to add
 more readers and writers, customize the default ones, or replace the default ones completely.

-For Jackson, consider using a Jackson format-specific builder like `JsonMapper.Builder` to configure Jackson's default
-properties.
+For Jackson JSON and XML, consider using
+{spring-framework-api}/http/converter/json/Jackson2ObjectMapperBuilder.html[`Jackson2ObjectMapperBuilder`],
+which customizes Jackson's default properties with the following ones:
+
+* {jackson-docs}/jackson-databind/javadoc/2.6/com/fasterxml/jackson/databind/DeserializationFeature.html#FAIL_ON_UNKNOWN_PROPERTIES[`DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES`] is disabled.
+* {jackson-docs}/jackson-databind/javadoc/2.6/com/fasterxml/jackson/databind/MapperFeature.html#DEFAULT_VIEW_INCLUSION[`MapperFeature.DEFAULT_VIEW_INCLUSION`] is disabled.
+
+It also automatically registers the following well-known modules if they are detected on the classpath:
+
+* {jackson-github-org}/jackson-datatype-jsr310[`jackson-datatype-jsr310`]: Support for Java 8 Date and Time API types.
+* {jackson-github-org}/jackson-datatype-jdk8[`jackson-datatype-jdk8`]: Support for other Java 8 types, such as `Optional`.
+* {jackson-github-org}/jackson-module-kotlin[`jackson-module-kotlin`]: Support for Kotlin classes and data classes.
+

 [[webflux-config-view-resolvers]]
 == View Resolvers
@@ -478,7 +489,7 @@ Java::
 		public void configureViewResolvers(ViewResolverRegistry registry) {
 			registry.freeMarker();

-			JacksonJsonEncoder encoder = new JacksonJsonEncoder();
+			Jackson2JsonEncoder encoder = new Jackson2JsonEncoder();
 			registry.defaultViews(new HttpMessageWriterView(encoder));
 		}

@@ -497,7 +508,7 @@ Kotlin::
 		override fun configureViewResolvers(registry: ViewResolverRegistry) {
 			registry.freeMarker()

-			val encoder = JacksonJsonEncoder()
+			val encoder = Jackson2JsonEncoder()
 			registry.defaultViews(HttpMessageWriterView(encoder))
 		}

@@ -690,7 +701,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim"]
 ----
 	@Configuration
-	class WebConfiguration : WebFluxConfigurer {
+	class WebConfiguration : WebMvcConfigurer {

 		override fun configureApiVersioning(configurer: ApiVersionConfigurer) {
 			configurer.useRequestHeader("API-Version")
@@ -5,7 +5,7 @@

 The following table shows the supported controller method arguments.

-Reactive types (Reactor, RxJava, xref:web/webflux-reactive-libraries.adoc[or other]) are
+Reactive types (Reactor, RxJava, xref:web-reactive.adoc#webflux-reactive-libraries[or other]) are
 supported on arguments that require blocking I/O (for example, reading the request body) to
 be resolved. This is marked in the Description column. Reactive types are not expected
 on arguments that do not require blocking.
@@ -114,6 +114,6 @@ and others) and is equivalent to `required=false`.
 | Any other argument
 | If a method argument is not matched to any of the above, it is, by default, resolved as
  a `@RequestParam` if it is a simple type, as determined by
-  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty],
+  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty],
  or as a `@ModelAttribute`, otherwise.
 |===
@@ -205,7 +205,7 @@ controller method xref:web/webmvc/mvc-controller/ann-validation.adoc[Validation]

 TIP: Using `@ModelAttribute` is optional. By default, any argument that is not a simple
 value type as determined by
-{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty]
+{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty]
 _AND_ that is not resolved by any other argument resolver is treated as an implicit `@ModelAttribute`.

 WARNING: When compiling to a native image with GraalVM, the implicit `@ModelAttribute`
@@ -41,8 +41,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	class MyForm(
-			private val name: String,
-			private val file: FilePart)
+			val name: String,
+			val file: FilePart)

 	@Controller
 	class FileUploadController {
@@ -103,8 +103,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@PostMapping("/")
-	fun handle(@RequestPart("meta-data") metadata: Part, // <1>
-			@RequestPart("file-data") file: FilePart): String { // <2>
+	fun handle(@RequestPart("meta-data") Part metadata, // <1>
+			@RequestPart("file-data") FilePart file): String { // <2>
 		// ...
 	}
 ----
@@ -169,8 +169,8 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@PostMapping("/")
-	fun handle(@Valid @RequestPart("meta-data") metadata: Mono<MetaData>): String {
-		// use one of the onError* operators...
+	fun handle(@Valid @RequestPart("meta-data") metadata: MetaData): String {
+		// ...
 	}
 ----
 ======
@@ -202,7 +202,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@PostMapping("/")
-	fun handle(@RequestBody parts: Mono<MultiValueMap<String, Part>>): String { // <1>
+	fun handle(@RequestBody parts: MultiValueMap<String, Part>): String { // <1>
 		// ...
 	}
 ----
@@ -227,7 +227,87 @@ when uploading. If the file is large enough to be split across multiple buffers,

 For example:

-include-code::./PartEventController[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+  @PostMapping("/")
+  public void handle(@RequestBody Flux<PartEvent> allPartsEvents) { <1>
+      allPartsEvents.windowUntil(PartEvent::isLast) <2>
+              .concatMap(p -> p.switchOnFirst((signal, partEvents) -> { <3>
+                  if (signal.hasValue()) {
+                      PartEvent event = signal.get();
+                      if (event instanceof FormPartEvent formEvent) { <4>
+                          String value = formEvent.value();
+                          // handle form field
+                      }
+                      else if (event instanceof FilePartEvent fileEvent) { <5>
+                          String filename = fileEvent.filename();
+                          Flux<DataBuffer> contents = partEvents.map(PartEvent::content); <6>
+                          // handle file upload
+                      }
+                      else {
+                          return Mono.error(new RuntimeException("Unexpected event: " + event));
+                      }
+                  }
+                  else {
+                      return partEvents; // either complete or error signal
+                  }
+              }));
+  }
+----
+<1> Using `@RequestBody`.
+<2> The final `PartEvent` for a particular part will have `isLast()` set to `true`, and can be
+followed by additional events belonging to subsequent parts.
+This makes the `isLast` property suitable as a predicate for the `Flux::windowUntil` operator, to
+split events from all parts into windows that each belong to a single part.
+<3> The `Flux::switchOnFirst` operator allows you to see whether you are handling a form field or
+file upload.
+<4> Handling the form field.
+<5> Handling the file upload.
+<6> The body contents must be completely consumed, relayed, or released to avoid memory leaks.
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@PostMapping("/")
+	fun handle(@RequestBody allPartsEvents: Flux<PartEvent>) = { // <1>
+      allPartsEvents.windowUntil(PartEvent::isLast) <2>
+          .concatMap {
+              it.switchOnFirst { signal, partEvents -> <3>
+                  if (signal.hasValue()) {
+                      val event = signal.get()
+                      if (event is FormPartEvent) { <4>
+                          val value: String = event.value();
+                          // handle form field
+                      } else if (event is FilePartEvent) { <5>
+                          val filename: String = event.filename();
+                          val contents: Flux<DataBuffer> = partEvents.map(PartEvent::content); <6>
+                          // handle file upload
+                      } else {
+                          return Mono.error(RuntimeException("Unexpected event: " + event));
+                      }
+                  } else {
+                      return partEvents; // either complete or error signal
+                  }
+              }
+          }
+}
+----
+<1> Using `@RequestBody`.
+<2> The final `PartEvent` for a particular part will have `isLast()` set to `true`, and can be
+followed by additional events belonging to subsequent parts.
+This makes the `isLast` property suitable as a predicate for the `Flux::windowUntil` operator, to
+split events from all parts into windows that each belong to a single part.
+<3> The `Flux::switchOnFirst` operator allows you to see whether you are handling a form field or
+file upload.
+<4> Handling the form field.
+<5> Handling the file upload.
+<6> The body contents must be completely consumed, relayed, or released to avoid memory leaks.
+======

 Received part events can also be relayed to another service by using the `WebClient`.
 See xref:web/webflux-webclient/client-body.adoc#webflux-client-body-multipart[Multipart Data].
@@ -74,6 +74,6 @@ When a `@RequestParam` annotation is declared on a `Map<String, String>` or

 Note that use of `@RequestParam` is optional -- for example, to set its attributes. By
 default, any argument that is a simple value type (as determined by
-{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty])
+{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty])
 and is not resolved by any other argument resolver is treated as if it were annotated
 with `@RequestParam`.
@@ -33,7 +33,7 @@ Kotlin::
 ----
 ======

-WebFlux supports using a single value xref:web/webflux-reactive-libraries.adoc[reactive type] to
+WebFlux supports using a single value xref:web-reactive.adoc#webflux-reactive-libraries[reactive type] to
 produce the `ResponseEntity` asynchronously, and/or single and multi-value reactive types
 for the body. This allows a variety of async responses with `ResponseEntity` as follows:

@@ -87,6 +87,6 @@ Reactor provides a dedicated operator for that, `Flux#collectList()`.
 | Other return values
 | If a return value remains unresolved in any other way, it is treated as a model
  attribute, unless it is a simple type as determined by
-  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty],
+  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty],
  in which case it remains unresolved.
 |===
@@ -393,10 +393,9 @@ is used to map requests.
 Once API versioning is enabled, you can begin to map requests with versions.
 The `@RequestMapping` `version` attribute supports the following:

+- No value -- matches any version
 - Fixed version ("1.2") -- matches the given version only
- Baseline version ("1.2+") -- matches the given and
-xref:web/webflux/config.adoc#webflux-config-api-version[supported versions] above
- No value -- matches any version, but is superseded by a more specific version match
+- Baseline version ("1.2+") -- matches the given version and above

 If multiple controller methods have a version less than or equal to the request version,
 the highest of those, and closest to the request version, is the one considered,
@@ -444,9 +443,6 @@ For request with version `"1.3"`:
 - (3) matches as it matches 1.2 and above, and is *chosen* as the highest match
 - (4) is higher and does not match

-NOTE: Version 1.3 must be present in the mappings, or be
-xref:web/webflux/config.adoc#webflux-config-api-version[configured as supported].
-
 For request with version `"1.5"`:

 - (1) matches as it matches any version
@@ -458,10 +454,9 @@ A request with version `"1.6"` does not have a match. (1) and (3) do match, but
 superseded by (4), which allows only a strict match, and therefore does not match.
 In this scenario, a `NotAcceptableApiVersionException` results in a 400 response.

-Controller methods without a version are intended to support clients created before a
-versioned alternative was introduced. Therefore, even though an unversioned controller
-method is considered a match for any version, it is in fact given the lowest priority,
-and is effectively superseded by any alternative controller method with a version.
+NOTE: The above assumes the request version is a
+xref:web/webflux/config.adoc#webflux-config-api-version["supported" version],
+or otherwise it would fail.

 See xref:web/webflux-versioning.adoc[API Versioning] for more details on underlying
 infrastructure and support for API Versioning.
@@ -207,7 +207,7 @@ was not provided (for example, model attribute was returned) or an async return
 view resolution scenarios. Explore the options in your IDE with code completion.
 * `Model`, `Map`: Extra model attributes to be added to the model for the request.
 * Any other: Any other return value (except for simple types, as determined by
-{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty])
+{spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty])
 is treated as a model attribute to be added to the model. The attribute name is derived
 from the class name by using {spring-framework-api}/core/Conventions.html[conventions],
 unless a handler method `@ModelAttribute` annotation is present.
@@ -58,7 +58,7 @@ If a publisher cannot slow down, it has to decide whether to buffer, drop, or fa
 Reactive Streams plays an important role for interoperability. It is of interest to libraries
 and infrastructure components but less useful as an application API, because it is too
 low-level. Applications need a higher-level and richer, functional API to
-compose async logic -- similar to the Java `Stream` API but not only for collections.
+compose async logic -- similar to the Java 8 `Stream` API but not only for collections.
 This is the role that reactive libraries play.

 {reactor-github-org}/reactor[Reactor] is the reactive library of choice for
@@ -77,7 +77,7 @@ as input, adapts it to a Reactor type internally, uses that, and returns either
 `Flux` or a `Mono` as output. So, you can pass any `Publisher` as input and you can apply
 operations on the output, but you need to adapt the output for use with another reactive library.
 Whenever feasible (for example, annotated controllers), WebFlux adapts transparently to the use
-of RxJava or another reactive library. See xref:web/webflux-reactive-libraries.adoc[Reactive Libraries] for more details.
+of RxJava or another reactive library. See xref:web-reactive.adoc#webflux-reactive-libraries[Reactive Libraries] for more details.

 NOTE: In addition to Reactive APIs, WebFlux can also be used with
 xref:languages/kotlin/coroutines.adoc[Coroutines] APIs in Kotlin which provides a more imperative style of programming.
@@ -131,7 +131,7 @@ execution model benefits as others in this space and also provides a choice of s
 (annotated controllers and functional web endpoints), and a choice of reactive libraries
 (Reactor, RxJava, or other).

-* If you are interested in a lightweight, functional web framework for use with Java
+* If you are interested in a lightweight, functional web framework for use with Java 8 lambdas
 or Kotlin, you can use the Spring WebFlux functional web endpoints. That can also be a good choice
 for smaller applications or microservices with less complex requirements that can benefit
 from greater transparency and control.
@@ -148,7 +148,7 @@ RxJava to perform blocking calls on a separate thread but you would not be makin
 most of a non-blocking web stack.

 * If you have a Spring MVC application with calls to remote services, try the reactive `WebClient`.
-You can return reactive types (Reactor, RxJava, xref:web/webflux-reactive-libraries.adoc[or other])
+You can return reactive types (Reactor, RxJava, xref:web-reactive.adoc#webflux-reactive-libraries[or other])
 directly from Spring MVC controller methods. The greater the latency per call or the
 interdependency among calls, the more dramatic the benefits. Spring MVC controllers
 can call other reactive components too.
@@ -381,23 +381,16 @@ See the section on xref:web/webflux-cors.adoc[CORS] and the xref:web/webflux-cor
 You may want your controller endpoints to match routes with or without a trailing slash in the URL path.
 For example, both "GET /home" and "GET /home/" should be handled by a controller method annotated with `@GetMapping("/home")`.

-Spring provides `UrlHandlerFilter` that removes the trailing slash from URL paths to ensure a consistent view of paths with or without a trailing slash.
-This is important to avoid a mismatch between URL-based authorization decisions and web framework request mappings.
-The filter can remove the trailing slash in one of a couple of ways:
+Adding trailing slash variants to all mapping declarations is not the best way to handle this use case.
+The `UrlHandlerFilter` web filter has been designed for this purpose. It can be configured to:

-* respond with an HTTP redirect status that sends clients to the same path without a trailing slash.
-* mutate the request to remove the trailing slash.
+* respond with an HTTP redirect status when receiving URLs with trailing slashes, sending browsers to the non-trailing slash URL variant.
+* mutate the request to act as if the request was sent without a trailing slash and continue the processing of the request.

 Here is how you can instantiate and configure a `UrlHandlerFilter` for a blog application:

 include-code::./UrlHandlerFilterConfiguration[tag=config,indent=0]

-Keep in mind the following:
-
- the root path `"/"` is excluded from trailing slash handling.
- `@RequestMapping("/")` adds a trailing slash to a type-level mapping, and therefore will
-not map when trailing slash handling applies; use `@RequestMapping` (no path attribute) instead.
-

 [[webflux-exception-handler]]
 == Exceptions
@@ -466,22 +459,22 @@ xref:web/webflux/config.adoc#webflux-config-message-codecs[HTTP message codecs].
 JSON and binary JSON ({jackson-github-org}/smile-format-specification[Smile]) are
 both supported when the Jackson library is present.

-The `JacksonJsonDecoder` works as follows:
+The `Jackson2Decoder` works as follows:

 * Jackson's asynchronous, non-blocking parser is used to aggregate a stream of byte chunks
 into ``TokenBuffer``'s each representing a JSON object.
-* Each `TokenBuffer` is passed to Jackson's `JsonMapper` to create a higher level object.
+* Each `TokenBuffer` is passed to Jackson's `ObjectMapper` to create a higher level object.
 * When decoding to a single-value publisher (for example, `Mono`), there is one `TokenBuffer`.
 * When decoding to a multi-value publisher (for example, `Flux`), each `TokenBuffer` is passed to
-the `JsonMapper` as soon as enough bytes are received for a fully formed object. The
+the `ObjectMapper` as soon as enough bytes are received for a fully formed object. The
 input content can be a JSON array, or any
 https://en.wikipedia.org/wiki/JSON_streaming[line-delimited JSON] format such as NDJSON,
 JSON Lines, or JSON Text Sequences.

-The `JacksonJsonEncoder` works as follows:
+The `Jackson2Encoder` works as follows:

 * For a single value publisher (for example, `Mono`), simply serialize it through the
-`JsonMapper`.
+`ObjectMapper`.
 * For a multi-value publisher with `application/json`, by default collect the values with
 `Flux#collectToList()` and then serialize the resulting collection.
 * For a multi-value publisher with a streaming media type such as
@@ -489,12 +482,12 @@ The `JacksonJsonEncoder` works as follows:
 flush each value individually using a
 https://en.wikipedia.org/wiki/JSON_streaming[line-delimited JSON] format. Other
 streaming media types may be registered with the encoder.
-* For SSE the `JacksonJsonEncoder` is invoked per event and the output is flushed to ensure
+* For SSE the `Jackson2Encoder` is invoked per event and the output is flushed to ensure
 delivery without delay.

 [NOTE]
 ====
-By default both `JacksonJsonEncoder` and `JacksonJsonDecoder` do not support elements of type
+By default both `Jackson2Encoder` and `Jackson2Decoder` do not support elements of type
 `String`. Instead the default assumption is that a string or a sequence of strings
 represent serialized JSON content, to be rendered by the `CharSequenceEncoder`. If what
 you need is to render a JSON array from `Flux<String>`, use `Flux#collectToList()` and
@@ -665,6 +658,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	class MyConfig implements WebFluxConfigurer {

 		@Override
@@ -679,6 +673,7 @@ Kotlin::
 [source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	@Configuration
+	@EnableWebFlux
 	class MyConfig : WebFluxConfigurer {

 		override fun configureHttpMessageCodecs(configurer: ServerCodecConfigurer) {
@@ -66,12 +66,12 @@ required CORS response headers set.

 In order to enable cross-origin requests (that is, the `Origin` header is present and
 differs from the host of the request), you need to have some explicitly declared CORS
-configuration. If no matching CORS configuration is found, no CORS headers are added to
-the responses to preflight, simple and actual CORS requests and, consequently, browsers
-reject them.
+configuration. If no matching CORS configuration is found, preflight requests are
+rejected. No CORS headers are added to the responses of simple and actual CORS requests
+and, consequently, browsers reject them.

 Each `HandlerMapping` can be
-{spring-framework-api}/web/servlet/handler/AbstractHandlerMapping.html#setCorsConfigurations(java.util.Map)[configured]
+{spring-framework-api}/web/servlet/handler/AbstractHandlerMapping.html#setCorsConfigurations-java.util.Map-[configured]
 individually with URL pattern-based `CorsConfiguration` mappings. In most cases, applications
 use the MVC Java configuration or the XML namespace to declare such mappings, which results
 in a single global map being passed to all `HandlerMapping` instances.
@@ -84,7 +84,7 @@ class- or method-level `@CrossOrigin` annotations (other handlers can implement
 The rules for combining global and local configuration are generally additive -- for example,
 all global and all local origins. For those attributes where only a single value can be
 accepted, for example, `allowCredentials` and `maxAge`, the local overrides the global value. See
-{spring-framework-api}/web/cors/CorsConfiguration.html#combine(org.springframework.web.cors.CorsConfiguration)[`CorsConfiguration#combine(CorsConfiguration)`]
+{spring-framework-api}/web/cors/CorsConfiguration.html#combine-org.springframework.web.cors.CorsConfiguration-[`CorsConfiguration#combine(CorsConfiguration)`]
 for more details.

 [TIP]
@@ -208,7 +208,6 @@ Kotlin::
 		fun remove(@PathVariable id: Long) {
 			// ...
 		}
-	}
 ----
 ======

@@ -287,9 +286,84 @@ the `allowOriginPatterns` property may be used to match to a dynamic set of orig

 `maxAge` is set to 30 minutes.

-You can enable CORS in the Spring MVC configuration as the following example shows:
+[[mvc-cors-global-java]]
+=== Java Configuration
+[.small]#xref:web/webflux-cors.adoc#webflux-cors-global[See equivalent in the Reactive stack]#
+
+To enable CORS in the MVC Java config, you can use the `CorsRegistry` callback,
+as the following example shows:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	public class WebConfig implements WebMvcConfigurer {
+
+		@Override
+		public void addCorsMappings(CorsRegistry registry) {
+
+			registry.addMapping("/api/**")
+				.allowedOrigins("https://domain2.com")
+				.allowedMethods("PUT", "DELETE")
+				.allowedHeaders("header1", "header2", "header3")
+				.exposedHeaders("header1", "header2")
+				.allowCredentials(true).maxAge(3600);
+
+			// Add more mappings...
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	class WebConfig : WebMvcConfigurer {
+
+		override fun addCorsMappings(registry: CorsRegistry) {
+
+			registry.addMapping("/api/**")
+					.allowedOrigins("https://domain2.com")
+					.allowedMethods("PUT", "DELETE")
+					.allowedHeaders("header1", "header2", "header3")
+					.exposedHeaders("header1", "header2")
+					.allowCredentials(true).maxAge(3600)
+
+			// Add more mappings...
+		}
+	}
+----
+======
+
+[[mvc-cors-global-xml]]
+=== XML Configuration
+
+To enable CORS in the XML namespace, you can use the `<mvc:cors>` element,
+as the following example shows:
+
+[source,xml,indent=0,subs="verbatim"]
+----
+<mvc:cors>
+
+	<mvc:mapping path="/api/**"
+		allowed-origins="https://domain1.com, https://domain2.com"
+		allowed-methods="GET, PUT"
+		allowed-headers="header1, header2, header3"
+		exposed-headers="header1, header2" allow-credentials="true"
+		max-age="123" />
+
+	<mvc:mapping path="/resources/**"
+		allowed-origins="https://domain1.com" />
+
+</mvc:cors>
+----

-include-code::./WebConfiguration[tag=snippet,indent=0]

 [[mvc-cors-filter]]
 == CORS Filter
@@ -15,7 +15,7 @@ the same xref:web/webmvc/mvc-servlet.adoc[DispatcherServlet].

 In WebMvc.fn, an HTTP request is handled with a `HandlerFunction`: a function that takes
 `ServerRequest` and returns a `ServerResponse`.
-Both the request and the response object have immutable contracts that offer convenient
+Both the request and the response object have immutable contracts that offer JDK 8-friendly
 access to the HTTP request and response.
 `HandlerFunction` is the equivalent of the body of a `@RequestMapping` method in the
 annotation-based programming model.
@@ -116,7 +116,7 @@ xref:web/webmvc-functional.adoc#webmvc-fn-running[Running a Server].
 == HandlerFunction
 [.small]#xref:web/webflux-functional.adoc#webflux-fn-handler-functions[See equivalent in the Reactive stack]#

-`ServerRequest` and `ServerResponse` are immutable interfaces that offer convenient
+`ServerRequest` and `ServerResponse` are immutable interfaces that offer JDK 8-friendly
 access to the HTTP request and response, including headers, body, method, and status code.

 [[webmvc-fn-request]]
@@ -184,8 +184,7 @@ val map = request.params()
 ----
 ======

-The following shows how to bind request parameters, URI variables, or headers via `DataBinder`,
-and also shows how to customize the `DataBinder`:
+The following shows how to bind request parameters, including an optional `DataBinder` customization:

 [tabs]
 ======
@@ -836,6 +835,7 @@ Java::
 [source,java,indent=0,subs="verbatim,quotes"]
 ----
 	ClassPathResource index = new ClassPathResource("static/index.html");
+	List<String> extensions = List.of("js", "css", "ico", "png", "jpg", "gif");
 	RequestPredicate spaPredicate = path("/api/**").or(path("/error")).negate();
 	RouterFunction<ServerResponse> redirectToIndex = route()
 		.resource(spaPredicate, index)
@@ -899,9 +899,81 @@ processing lifecycle and also (potentially) run side by side with annotated cont
 any are declared. It is also how functional endpoints are enabled by the Spring Boot Web
 starter.

-The following example shows a related Spring MVC configuration:
+The following example shows a WebMvc Java configuration:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableMvc
+	public class WebConfig implements WebMvcConfigurer {
+
+		@Bean
+		public RouterFunction<?> routerFunctionA() {
+			// ...
+		}
+
+		@Bean
+		public RouterFunction<?> routerFunctionB() {
+			// ...
+		}
+
+		// ...
+
+		@Override
+		public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
+			// configure message conversion...
+		}
+
+		@Override
+		public void addCorsMappings(CorsRegistry registry) {
+			// configure CORS...
+		}
+
+		@Override
+		public void configureViewResolvers(ViewResolverRegistry registry) {
+			// configure view resolution for HTML rendering...
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableMvc
+	class WebConfig : WebMvcConfigurer {
+
+		@Bean
+		fun routerFunctionA(): RouterFunction<*> {
+			// ...
+		}
+
+		@Bean
+		fun routerFunctionB(): RouterFunction<*> {
+			// ...
+		}
+
+		// ...
+
+		override fun configureMessageConverters(converters: List<HttpMessageConverter<*>>) {
+			// configure message conversion...
+		}
+
+		override fun addCorsMappings(registry: CorsRegistry) {
+			// configure CORS...
+		}
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			// configure view resolution for HTML rendering...
+		}
+	}
+----
+======


 [[webmvc-fn-handler-filter-function]]
@@ -14,7 +14,82 @@ integration for using Spring MVC with FreeMarker templates.

 The following example shows how to configure FreeMarker as a view technology:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+		@Configuration
+		@EnableWebMvc
+		public class WebConfig implements WebMvcConfigurer {
+
+			@Override
+			public void configureViewResolvers(ViewResolverRegistry registry) {
+				registry.freeMarker();
+			}
+
+			// Configure FreeMarker...
+
+			@Bean
+			public FreeMarkerConfigurer freeMarkerConfigurer() {
+				FreeMarkerConfigurer configurer = new FreeMarkerConfigurer();
+				configurer.setTemplateLoaderPath("/WEB-INF/freemarker");
+				configurer.setDefaultCharset(StandardCharsets.UTF_8);
+				return configurer;
+			}
+		}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	class WebConfig : WebMvcConfigurer {
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			registry.freeMarker()
+		}
+
+		// Configure FreeMarker...
+
+		@Bean
+		fun freeMarkerConfigurer() = FreeMarkerConfigurer().apply {
+			setTemplateLoaderPath("/WEB-INF/freemarker")
+			setDefaultCharset(StandardCharsets.UTF_8)
+		}
+	}
+----
+======
+
+The following example shows how to configure the same in XML:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<mvc:annotation-driven/>
+
+	<mvc:view-resolvers>
+		<mvc:freemarker/>
+	</mvc:view-resolvers>
+
+	<!-- Configure FreeMarker... -->
+	<mvc:freemarker-configurer>
+		<mvc:template-loader-path location="/WEB-INF/freemarker"/>
+	</mvc:freemarker-configurer>
+----
+
+Alternatively, you can also declare the `FreeMarkerConfigurer` bean for full control over all
+properties, as the following example shows:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
+		<property name="templateLoaderPath" value="/WEB-INF/freemarker/"/>
+		<property name="defaultEncoding" value="UTF-8"/>
+	</bean>
+----

 Your templates need to be stored in the directory specified by the `FreeMarkerConfigurer`
 shown in the preceding example. Given the preceding configuration, if your controller
@@ -32,7 +107,19 @@ properties on the `FreeMarkerConfigurer` bean. The `freemarkerSettings` property
 a `java.util.Properties` object, and the `freemarkerVariables` property requires a
 `java.util.Map`. The following example shows how to use a `FreeMarkerConfigurer`:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
+		<property name="templateLoaderPath" value="/WEB-INF/freemarker/"/>
+		<property name="freemarkerVariables">
+			<map>
+				<entry key="xml_escape" value-ref="fmXmlEscape"/>
+			</map>
+		</property>
+	</bean>
+
+	<bean id="fmXmlEscape" class="freemarker.template.utility.XmlEscape"/>
+----

 See the FreeMarker documentation for details of settings and variables as they apply to
 the `Configuration` object.
@@ -14,7 +14,68 @@ NOTE: The Groovy Markup Template engine requires Groovy 2.3.1+.

 The following example shows how to configure the Groovy Markup Template Engine:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	public class WebConfig implements WebMvcConfigurer {
+
+		@Override
+		public void configureViewResolvers(ViewResolverRegistry registry) {
+			registry.groovy();
+		}
+
+		// Configure the Groovy Markup Template Engine...
+
+		@Bean
+		public GroovyMarkupConfigurer groovyMarkupConfigurer() {
+			GroovyMarkupConfigurer configurer = new GroovyMarkupConfigurer();
+			configurer.setResourceLoaderPath("/WEB-INF/");
+			return configurer;
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	class WebConfig : WebMvcConfigurer {
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			registry.groovy()
+		}
+
+		// Configure the Groovy Markup Template Engine...
+
+		@Bean
+		fun groovyMarkupConfigurer() = GroovyMarkupConfigurer().apply {
+			resourceLoaderPath = "/WEB-INF/"
+		}
+	}
+----
+======
+
+The following example shows how to configure the same in XML:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<mvc:annotation-driven/>
+
+	<mvc:view-resolvers>
+		<mvc:groovy/>
+	</mvc:view-resolvers>
+
+	<!-- Configure the Groovy Markup Template Engine... -->
+	<mvc:groovy-configurer resource-loader-path="/WEB-INF/"/>
+----
+

 [[mvc-view-groovymarkup-example]]
 == Example
@@ -10,7 +10,7 @@ Spring offers support for the Jackson JSON library.
 == Jackson-based JSON MVC Views
 [.small]#xref:web/webflux-view.adoc#webflux-view-httpmessagewriter[See equivalent in the Reactive stack]#

-The `JacksonJsonView` uses the Jackson library's `JsonMapper` to render the response
+The `MappingJackson2JsonView` uses the Jackson library's `ObjectMapper` to render the response
 content as JSON. By default, the entire contents of the model map (with the exception of
 framework-specific classes) are encoded as JSON. For cases where the contents of the
 map need to be filtered, you can specify a specific set of model attributes to encode
@@ -18,17 +18,17 @@ by using the `modelKeys` property. You can also use the `extractValueFromSingleK
 property to have the value in single-key models extracted and serialized directly rather
 than as a map of model attributes.

-You can customize JSON mapping as needed by using Jackson's provided annotations. When
-you need further control, you can inject a custom `JsonMapper` through the `JsonMapper`
-or `JsonMapper.Builder` constructor parameters, for cases where you need to provide
-custom JSON serializers and deserializers for specific types.
+You can customize JSON mapping as needed by using Jackson's provided
+annotations. When you need further control, you can inject a custom `ObjectMapper`
+through the `ObjectMapper` property, for cases where you need to provide custom JSON
+serializers and deserializers for specific types.


 [[mvc-view-xml-mapping]]
 == Jackson-based XML Views
 [.small]#xref:web/webflux-view.adoc#webflux-view-httpmessagewriter[See equivalent in the Reactive stack]#

-`JacksonXmlView` uses the
+`MappingJackson2XmlView` uses the
 {jackson-github-org}/jackson-dataformat-xml[Jackson XML extension's] `XmlMapper`
 to render the response content as XML. If the model contains multiple entries, you should
 explicitly set the object to be serialized by using the `modelKey` bean property. If the
@@ -36,5 +36,5 @@ model contains a single entry, it is serialized automatically.

 You can customize XML mapping as needed by using JAXB or Jackson's provided
 annotations. When you need further control, you can inject a custom `XmlMapper`
-created via `XmlMapper.Builder` for cases where custom XML you need to provide
-serializers and deserializers for specific types.
+through the `ObjectMapper` property, for cases where custom XML
+you need to provide serializers and deserializers for specific types.
@@ -16,11 +16,39 @@ a directory under the `WEB-INF` directory so there can be no direct access by cl
 This is what is done by the configuration below which registers a JSP view resolver using
 a default view name prefix of `"/WEB-INF/"` and a default suffix of `".jsp"`.

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+@EnableWebMvc
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void configureViewResolvers(ViewResolverRegistry registry) {
+        registry.jsp();
+    }
+}
+----
+
+XML::
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+    <mvc:annotation-driven/>
+
+    <mvc:view-resolvers>
+        <mvc:jsp/>
+    </mvc:view-resolvers>
+----
+======

 [NOTE]
 You can specify custom prefix and suffix.

+
 [[mvc-view-jsp-jstl]]
 == JSPs versus JSTL

@@ -11,8 +11,13 @@ templating libraries on different script engines:
 [%header]
 |===
 |Scripting Library |Scripting Engine
+|https://handlebarsjs.com/[Handlebars] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://mustache.github.io/[Mustache] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://react.dev/[React] |https://openjdk.java.net/projects/nashorn/[Nashorn]
+|https://ejs.co/[EJS] |https://openjdk.java.net/projects/nashorn/[Nashorn]
 |https://docs.ruby-lang.org/en/master/ERB.html[ERB] |https://www.jruby.org[JRuby]
 |https://docs.python.org/2/library/string.html#template-strings[String templates] |https://www.jython.org/[Jython]
+|https://github.com/sdeleuze/kotlin-script-templating[Kotlin Script templating] |{kotlin-site}[Kotlin]
 |===

 TIP: The basic rule for integrating any other script engine is that it must implement the
@@ -25,8 +30,18 @@ TIP: The basic rule for integrating any other script engine is that it must impl

 You need to have the script engine on your classpath, the details of which vary by script engine:

+* The https://openjdk.java.net/projects/nashorn/[Nashorn] JavaScript engine is provided with
+Java 8+. Using the latest update release available is highly recommended.
 * https://www.jruby.org[JRuby] should be added as a dependency for Ruby support.
 * https://www.jython.org[Jython] should be added as a dependency for Python support.
+* `org.jetbrains.kotlin:kotlin-script-util` dependency and a `META-INF/services/javax.script.ScriptEngineFactory`
+ file containing a `org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory`
+ line should be added for Kotlin script support. See
+ https://github.com/sdeleuze/kotlin-script-templating[this example] for more details.
+
+You need to have the script templating library. One way to do that for JavaScript is
+through https://www.webjars.org/[WebJars].
+

 [[mvc-view-script-integrate]]
 == Script Templates
@@ -34,20 +49,74 @@ You need to have the script engine on your classpath, the details of which vary

 You can declare a `ScriptTemplateConfigurer` bean to specify the script engine to use,
 the script files to load, what function to call to render templates, and so on.
-The following example uses the Jython Python engine:
+The following example uses Mustache templates and the Nashorn JavaScript engine:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	public class WebConfig implements WebMvcConfigurer {

-The render function is called with the following parameters:
+		@Override
+		public void configureViewResolvers(ViewResolverRegistry registry) {
+			registry.scriptTemplate();
+		}

-* `String template`: The template content
-* `Map model`: The view model
-* `RenderingContext renderingContext`: The
-{spring-framework-api}/web/servlet/view/script/RenderingContext.html[`RenderingContext`]
-that gives access to the application context, the locale, the template loader, and the
-URL
+		@Bean
+		public ScriptTemplateConfigurer configurer() {
+			ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
+			configurer.setEngineName("nashorn");
+			configurer.setScripts("mustache.js");
+			configurer.setRenderObject("Mustache");
+			configurer.setRenderFunction("render");
+			return configurer;
+		}
+	}
+----

-The controller is used to populate the model attributes and specify the view name, as the following example shows:
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	class WebConfig : WebMvcConfigurer {
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			registry.scriptTemplate()
+		}
+
+		@Bean
+		fun configurer() = ScriptTemplateConfigurer().apply {
+			engineName = "nashorn"
+			setScripts("mustache.js")
+			renderObject = "Mustache"
+			renderFunction = "render"
+		}
+	}
+----
+======
+
+The following example shows the same arrangement in XML:
+
+[source,xml,indent=0,subs="verbatim,quotes"]
+----
+	<mvc:annotation-driven/>
+
+	<mvc:view-resolvers>
+		<mvc:script-template/>
+	</mvc:view-resolvers>
+
+	<mvc:script-template-configurer engine-name="nashorn" render-object="Mustache" render-function="render">
+		<mvc:script location="mustache.js"/>
+	</mvc:script-template-configurer>
+----
+
+The controller would look no different for the Java and XML configurations, as the following example shows:

 [tabs]
 ======
@@ -84,6 +153,115 @@ Kotlin::
 ----
 ======

+The following example shows the Mustache template:
+
+[source,html,indent=0,subs="verbatim,quotes"]
+----
+	<html>
+		<head>
+			<title>{{title}}</title>
+		</head>
+		<body>
+			<p>{{body}}</p>
+		</body>
+	</html>
+----
+
+The render function is called with the following parameters:
+
+* `String template`: The template content
+* `Map model`: The view model
+* `RenderingContext renderingContext`: The
+  {spring-framework-api}/web/servlet/view/script/RenderingContext.html[`RenderingContext`]
+  that gives access to the application context, the locale, the template loader, and the
+  URL (since 5.0)
+
+`Mustache.render()` is natively compatible with this signature, so you can call it directly.
+
+If your templating technology requires some customization, you can provide a script that
+implements a custom render function. For example, https://handlebarsjs.com[Handlerbars]
+needs to compile templates before using them and requires a
+https://en.wikipedia.org/wiki/Polyfill[polyfill] to emulate some
+browser facilities that are not available in the server-side script engine.
+
+The following example shows how to do so:
+
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	public class WebConfig implements WebMvcConfigurer {
+
+		@Override
+		public void configureViewResolvers(ViewResolverRegistry registry) {
+			registry.scriptTemplate();
+		}
+
+		@Bean
+		public ScriptTemplateConfigurer configurer() {
+			ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
+			configurer.setEngineName("nashorn");
+			configurer.setScripts("polyfill.js", "handlebars.js", "render.js");
+			configurer.setRenderFunction("render");
+			configurer.setSharedEngine(false);
+			return configurer;
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@Configuration
+	@EnableWebMvc
+	class WebConfig : WebMvcConfigurer {
+
+		override fun configureViewResolvers(registry: ViewResolverRegistry) {
+			registry.scriptTemplate()
+		}
+
+		@Bean
+		fun configurer() = ScriptTemplateConfigurer().apply {
+			engineName = "nashorn"
+			setScripts("polyfill.js", "handlebars.js", "render.js")
+			renderFunction = "render"
+			isSharedEngine = false	
+		}
+	}
+----
+======
+
+NOTE: Setting the `sharedEngine` property to `false` is required when using non-thread-safe
+script engines with templating libraries not designed for concurrency, such as Handlebars or
+React running on Nashorn. In that case, Java SE 8 update 60 is required, due to
+https://bugs.openjdk.java.net/browse/JDK-8076099[this bug], but it is generally
+recommended to use a recent Java SE patch release in any case.
+
+`polyfill.js` defines only the `window` object needed by Handlebars to run properly, as follows:
+
+[source,javascript,indent=0,subs="verbatim,quotes"]
+----
+	var window = {};
+----
+
+This basic `render.js` implementation compiles the template before using it. A production-ready
+implementation should also store any reused cached templates or pre-compiled templates.
+You can do so on the script side (and handle any customization you need -- managing
+template engine configuration, for example). The following example shows how to do so:
+
+[source,javascript,indent=0,subs="verbatim,quotes"]
+----
+	function render(template, model) {
+		var compiledTemplate = Handlebars.compile(template);
+		return compiledTemplate(model);
+	}
+----
+
 Check out the Spring Framework unit tests,
 {spring-framework-code}/spring-webmvc/src/test/java/org/springframework/web/servlet/view/script[Java], and
 {spring-framework-code}/spring-webmvc/src/test/resources/org/springframework/web/servlet/view/script[resources],
@@ -21,7 +21,45 @@ Configuration is standard for a simple Spring web application: The MVC configura
 has to define an `XsltViewResolver` bean and regular MVC annotation configuration.
 The following example shows how to do so:

-include-code::./WebConfiguration[tag=snippet,indent=0]
+[tabs]
+======
+Java::
+
+[source,java,indent=0,subs="verbatim,quotes"]
+----
+	@EnableWebMvc
+	@ComponentScan
+	@Configuration
+	public class WebConfig implements WebMvcConfigurer {
+
+		@Bean
+		public XsltViewResolver xsltViewResolver() {
+			XsltViewResolver viewResolver = new XsltViewResolver();
+			viewResolver.setPrefix("/WEB-INF/xsl/");
+			viewResolver.setSuffix(".xslt");
+			return viewResolver;
+		}
+	}
+----
+
+Kotlin::
+
+[source,kotlin,indent=0,subs="verbatim,quotes"]
+----
+	@EnableWebMvc
+	@ComponentScan
+	@Configuration
+	class WebConfig : WebMvcConfigurer {
+
+		@Bean
+		fun xsltViewResolver() = XsltViewResolver().apply {
+			setPrefix("/WEB-INF/xsl/")
+			setSuffix(".xslt")	
+		}
+	}
+----
+======
+

 [[mvc-view-xslt-controllercode]]
 == Controller
@@ -120,26 +120,17 @@ See the sections on xref:web/webmvc-cors.adoc[CORS] and the xref:web/webmvc-cors
 == URL Handler
 [.small]#xref:web/webflux/reactive-spring.adoc#filters.url-handler[See equivalent in the Reactive stack]#

-You may want your controller endpoints to match routes with or without a trailing slash in the URL path.
-For example, both "GET /home" and "GET /home/" should be handled by a controller method annotated with `@GetMapping("/home")`.
+In previous Spring Framework versions, Spring MVC could be configured to ignore trailing slashes in URL paths
+when mapping incoming requests on controller methods. This means that sending a "GET /home/" request would be
+handled by a controller method annotated with `@GetMapping("/home")`.

-Spring provides `UrlHandlerFilter` that removes the trailing slash from URL paths to ensure a consistent view of paths with or without a trailing slash.
-This is important to avoid a mismatch between URL-based authorization decisions and web framework request mappings.
-The filter can remove the trailing slash in one of a couple of ways:
+This option was deprecated in 6.0 and removed in 7.0, but applications are still expected to handle such
+requests in a safe way. The `UrlHandlerFilter` Servlet filter has been designed for this purpose.
+It can be configured to:

-* respond with an HTTP redirect status that sends clients to the same path without a trailing slash.
-* wrap the request to remove the trailing slash.
-
-NOTE: Historically Spring MVC supported trailing slash matching of URL paths.
-This capability was deprecated in 6.0 for security reasons and removed in 7.0 with
-`UrlHandlerFilter` providing a safer alternative.
+* respond with an HTTP redirect status when receiving URLs with trailing slashes, sending browsers to the non-trailing slash URL variant.
+* wrap the request to act as if the request was sent without a trailing slash and continue the processing of the request.

 Here is how you can instantiate and configure a `UrlHandlerFilter` for a blog application:

 include-code::./UrlHandlerFilterConfiguration[tag=config,indent=0]
-
-Keep in mind the following:
-
- the root path `"/"` is excluded from trailing slash handling.
- `@RequestMapping("/")` adds a trailing slash to a type-level mapping, and therefore will
-not map when trailing slash handling applies; use `@RequestMapping` (no path attribute) instead.
@@ -42,25 +42,25 @@ This converter requires a `Marshaller` and `Unmarshaller` before it can be used.
 You can inject these through constructor or bean properties.
 By default, this converter supports `text/xml` and `application/xml`.

-| `JacksonJsonHttpMessageConverter`
-| An `HttpMessageConverter` implementation that can read and write JSON by using Jackson's `JsonMapper`.
+| `MappingJackson2HttpMessageConverter`
+| An `HttpMessageConverter` implementation that can read and write JSON by using Jackson's `ObjectMapper`.
 You can customize JSON mapping as needed through the use of Jackson's provided annotations.
-When you need further control (for cases where custom JSON serializers/deserializers need to be provided for specific types), you can inject a custom `JsonMapper` through the `JsonMapper` or `JsonMapper.Builder` constructor parameters.
-By default, this converter supports `application/json`. This requires the `tools.jackson.core:jackson-databind` dependency.
+When you need further control (for cases where custom JSON serializers/deserializers need to be provided for specific types), you can inject a custom `ObjectMapper` through the `ObjectMapper` property.
+By default, this converter supports `application/json`. This requires the `com.fasterxml.jackson.core:jackson-databind` dependency.

-| `JacksonXmlHttpMessageConverter`
+| `MappingJackson2XmlHttpMessageConverter`
 | An `HttpMessageConverter` implementation that can read and write XML by using {jackson-github-org}/jackson-dataformat-xml[Jackson XML] extension's `XmlMapper`.
 You can customize XML mapping as needed through the use of JAXB or Jackson's provided annotations.
-When you need further control (for cases where custom XML serializers/deserializers need to be provided for specific types), you can inject a custom `XmlMapper` through the `JsonMapper` or `JsonMapper.Builder` constructor parameters.
-By default, this converter supports `application/xml`. This requires the `tools.jackson.dataformat:jackson-dataformat-xml` dependency.
+When you need further control (for cases where custom XML serializers/deserializers need to be provided for specific types), you can inject a custom `XmlMapper` through the `ObjectMapper` property.
+By default, this converter supports `application/xml`. This requires the `com.fasterxml.jackson.dataformat:jackson-dataformat-xml` dependency.

 | `KotlinSerializationJsonHttpMessageConverter`
 | An `HttpMessageConverter` implementation that can read and write JSON using `kotlinx.serialization`.
 This converter is not configured by default, as this conflicts with Jackson.
 Developers must configure it as an additional converter ahead of the Jackson one.

-| `JacksonCborHttpMessageConverter`
-| `tools.jackson.dataformat:jackson-dataformat-cbor`
+| `MappingJackson2CborHttpMessageConverter`
+| `com.fasterxml.jackson.dataformat:jackson-dataformat-cbor`

 | `SourceHttpMessageConverter`
 | An `HttpMessageConverter` implementation that can read and write `javax.xml.transform.Source` from the HTTP request and response.
@@ -414,7 +414,7 @@ customize the status and headers of the response.
 [.small]#xref:web/webflux/reactive-spring.adoc#webflux-codecs-streaming[See equivalent in the Reactive stack]#

 Spring MVC supports use of reactive client libraries in a controller (also read
-xref:web/webflux-reactive-libraries.adoc[Reactive Libraries] in the WebFlux section).
+xref:web-reactive.adoc#webflux-reactive-libraries[Reactive Libraries] in the WebFlux section).
 This includes the `WebClient` from `spring-webflux` and others, such as Spring Data
 reactive data repositories. In such scenarios, it is convenient to be able to return
 reactive types from the controller method.
@@ -32,9 +32,9 @@ any `@RequestMapping` method to render an RFC 9457 response. This is processed a
 - The `status` property of `ProblemDetail` determines the HTTP status.
 - The `instance` property of `ProblemDetail` is set from the current URL path, if not
 already set.
- The Jackson JSON and XML codecs use "application/problem+json" or
-"application/problem+xml" respectively as the producible media types for `ProblemDetail`
-to ensure they are favored for content negotiation.
+- For content negotiation, the Jackson `HttpMessageConverter` prefers
+"application/problem+json" over "application/json" when rendering a `ProblemDetail`,
+and also falls back on it if no compatible media type is found.

 To enable RFC 9457 responses for Spring MVC exceptions and for any
 `ErrorResponseException`, extend `ResponseEntityExceptionHandler` and declare it as an
@@ -66,13 +66,6 @@ from an existing `ProblemDetail`. This could be done centrally, for example, fro
 `@ControllerAdvice` such as `ResponseEntityExceptionHandler` that re-creates the
 `ProblemDetail` of an exception into a subclass with the additional non-standard fields.

-TIP: In Spring Boot, the `spring.mvc.problemdetails.enabled` property autoconfigures
-a `ResponseEntityExceptionHandler` that handles built-in exceptions with problem details.
-In that case, you may prefer to create another `@ControllerAdvice` instead of extending
-`ResponseEntityExceptionHandler` if you want to take over the handling of a specific
-built-in exception. You'll need to ensure your handler is ordered ahead of the one
-configured by Spring Boot whose order is 0.
-

 [[mvc-ann-rest-exceptions-i18n]]
 == Customization and i18n
@@ -178,11 +171,11 @@ Message codes and arguments for each error are also resolved via `MessageSource`

 | `NoResourceFoundException`
 | (default)
-| `+{0}+` the request path (or portion of) used to find a resource
+|

 | `TypeMismatchException`
 | (default)
-| `+{0}+` property name, `+{1}+` property value, `+{2}+` simple name of required type
+| `+{0}+` property name, `+{1}+` property value

 | `UnsatisfiedServletRequestParameterException`
 | (default)
@@ -191,7 +184,7 @@ Message codes and arguments for each error are also resolved via `MessageSource`
 |===

 NOTE: Unlike other exceptions, the message arguments for
-`MethodArgumentNotValidException` and `HandlerMethodValidationException` are based on a list of
+`MethodArgumentValidException` and `HandlerMethodValidationException` are based on a list of
 `MessageSourceResolvable` errors that can also be customized through a
 xref:core/beans/context-introduction.adoc#context-functionality-messagesource[MessageSource]
 resource bundle. See
@@ -215,7 +215,7 @@ the content negotiation during the error handling phase will decide which conten

 | Any other return value
 | If a return value is not matched to any of the above and is not a simple type (as determined by
-  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty(java.lang.Class)[BeanUtils#isSimpleProperty]),
+  {spring-framework-api}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty]),
  by default, it is treated as a model attribute to be added to the model. If it is a simple type,
  it remains unresolved.
 |===
--- a/Show More
+++ b/Show More