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Author SHA1 Message Date
Brian Clozel 118c2c23db Release v7.0.0-RC1 2025-10-16 09:50:08 +02:00
2657 changed files with 28637 additions and 65790 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 }}
+2 -2
View File
@@ -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
@@ -21,13 +21,13 @@ 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
/**/framework-api-*-docs.zip::zip.type=docs
/**/framework-api-*-schema.zip::zip.type=schema
build-name: 'spring-framework-7.1.x'
build-name: 'spring-framework-7.0.x'
folder: 'deployment-repository'
password: ${{ secrets.ARTIFACTORY_PASSWORD }}
repository: 'libs-snapshot-local'
+2 -2
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@@ -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/'
+1 -1
View File
@@ -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
+1 -1
View File
@@ -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
+7 -7
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@@ -2,8 +2,8 @@ name: Release Milestone
on:
push:
tags:
- v7.1.0-M[1-9]
- v7.1.0-RC[1-9]
- v7.0.0-M[1-9]
- v7.0.0-RC[1-9]
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
jobs:
@@ -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:
+6 -6
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@@ -2,7 +2,7 @@ name: Release
on:
push:
tags:
- v7.1.[0-9]+
- v7.0.[0-9]+
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
jobs:
@@ -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:
@@ -17,7 +17,7 @@ jobs:
runs-on: ubuntu-latest
strategy:
matrix:
branch: [ '6.2.x', '7.0.x', 'main' ]
branch: [ '6.1.x' ]
steps:
- uses: spring-io/spring-doc-actions/update-antora-spring-ui@5a57bcc6a0da2a1474136cf29571b277850432bc
name: Update
+5 -5
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@@ -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/'
+1 -2
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@@ -9,7 +9,6 @@ ivy-cache
argfile*
activemq-data/
classes/
.cursor/
# Log files
jxl.log
@@ -39,7 +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
+2 -2
View File
@@ -1,4 +1,4 @@
# Contributing to the Spring Framework
# Contributing to the Spring Framework
First off, thank you for taking the time to contribute! :+1: :tada:
@@ -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
+1 -1
View File
@@ -27,7 +27,7 @@ See the [Build from Source](https://github.com/spring-projects/spring-framework/
## Continuous Integration Builds
CI builds are defined with [GitHub Actions workflows](.github/workflows).
Information regarding CI builds can be found in the [Spring Framework Concourse pipeline](ci/README.adoc) documentation.
## Stay in Touch
+13 -16
View File
@@ -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 '0.0.6' apply false
}
ext {
@@ -61,27 +61,24 @@ configure([rootProject] + javaProjects) { project ->
testImplementation("org.junit.platform:junit-platform-suite")
testImplementation("org.mockito:mockito-core")
testImplementation("org.mockito:mockito-junit-jupiter")
testImplementation("io.mockk:mockk") {
exclude group: 'junit', module: 'junit'
}
testImplementation("io.mockk:mockk")
testImplementation("org.assertj:assertj-core")
testRuntimeOnly("org.junit.platform:junit-platform-launcher")
testRuntimeOnly("org.apache.logging.log4j:log4j-core")
}
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://www.quartz-scheduler.org/api/2.3.0/",
"https://hc.apache.org/httpcomponents-client-5.6.x/5.6/httpclient5/apidocs/",
"https://projectreactor.io/docs/core/release/api/",
"https://projectreactor.io/docs/test/release/api/",
"https://junit.org/junit4/javadoc/4.13.2/",
"https://docs.junit.org/6.1.0/api/",
"https://www.reactive-streams.org/reactive-streams-1.0.4-javadoc/",
"https://r2dbc.io/spec/1.0.0.RELEASE/api/",
"https://jspecify.dev/docs/api/"
"https://docs.oracle.com/en/java/javase/17/docs/api/",
"https://jakarta.ee/specifications/platform/11/apidocs/",
"https://docs.hibernate.org/orm/5.6/javadocs/",
"https://www.quartz-scheduler.org/api/2.3.0/",
"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/6.0.0/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[]
}
+1 -1
View File
@@ -20,7 +20,7 @@ ext {
dependencies {
checkstyle "io.spring.javaformat:spring-javaformat-checkstyle:${javaFormatVersion}"
implementation "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}"
implementation "org.jetbrains.dokka:dokka-gradle-plugin:2.2.0"
implementation "org.jetbrains.dokka:dokka-gradle-plugin:2.1.0"
implementation "com.tngtech.archunit:archunit:1.4.1"
implementation "org.gradle:test-retry-gradle-plugin:1.6.2"
implementation "io.spring.javaformat:spring-javaformat-gradle-plugin:${javaFormatVersion}"
@@ -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("13.4.2");
checkstyle.setToolVersion("12.0.0");
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;
@@ -28,10 +27,6 @@ import org.gradle.api.plugins.ExtensionContainer;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.JavaPluginExtension;
import org.gradle.api.tasks.TaskContainer;
import org.gradle.api.tasks.TaskProvider;
import org.gradle.api.tasks.bundling.AbstractArchiveTask;
import org.gradle.jvm.tasks.Jar;
import org.gradle.jvm.toolchain.JavaLanguageVersion;
import org.gradle.jvm.toolchain.JavaToolchainService;
/**
@@ -43,8 +38,6 @@ import org.gradle.jvm.toolchain.JavaToolchainService;
*/
public class MultiReleaseJarPlugin implements Plugin<Project> {
public static String VALIDATE_JAR_TASK_NAME = "validateMultiReleaseJar";
@Inject
protected JavaToolchainService getToolchains() {
throw new UnsupportedOperationException();
@@ -64,13 +57,5 @@ public class MultiReleaseJarPlugin implements Plugin<Project> {
tasks,
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));
}
}
}
@@ -1,47 +0,0 @@
/*
* Copyright 2002-present the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.build.multirelease;
import org.gradle.api.file.RegularFileProperty;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.InputFile;
import org.gradle.api.tasks.JavaExec;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;
import org.gradle.jvm.toolchain.JavaToolchainService;
import java.util.List;
import javax.inject.Inject;
@CacheableTask
public abstract class MultiReleaseJarValidateTask extends JavaExec {
public MultiReleaseJarValidateTask() {
getMainModule().set("jdk.jartool");
getArgumentProviders().add(() -> List.of("--validate", "--file", getJar().get().getAsFile().getAbsolutePath()));
}
@Inject
protected abstract JavaToolchainService getJavaToolchainService();
@InputFile
@PathSensitive(PathSensitivity.RELATIVE)
public abstract RegularFileProperty getJar();
}
@@ -78,7 +78,7 @@ public class ShadowSource extends DefaultTask {
}
@OutputDirectory
public DirectoryProperty getOutputDirectory() {
DirectoryProperty getOutputDirectory() {
return this.outputDirectory;
}
@@ -26,15 +26,11 @@ import java.util.jar.Attributes;
import java.util.jar.JarFile;
import org.gradle.testkit.runner.BuildResult;
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;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
/**
* Tests for {@link MultiReleaseJarPlugin}
@@ -45,13 +41,10 @@ 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
@@ -123,50 +116,12 @@ public class MultiReleaseJarPluginTests {
}
}
@Test
@DisabledForJreRange(max = JRE.JAVA_24, disabledReason = "'jar --validate' is available as of Java 25")
void validateJar() throws IOException {
writeBuildFile("""
plugins {
id 'java'
id 'org.springframework.build.multiReleaseJar'
}
version = '1.2.3'
tasks.withType(JavaCompile).configureEach {
options.release = 11
}
multiRelease { releaseVersions 17 }
""");
writeGradleProperties("""
org.gradle.jvmargs=-Duser.language=en
""");
writeClass("src/main/java17", "Main.java", """
public class Main {
public void method() {}
}
""");
writeClass("src/main/java", "Main.java", """
public class Main {}
""");
assertThatThrownBy(() ->runGradle("validateMultiReleaseJar"))
.isInstanceOf(UnexpectedBuildFailure.class)
.hasMessageContaining("entry: META-INF/versions/17/Main.class, contains a class with different api from earlier version");
}
private void writeBuildFile(String buildContent) throws IOException {
try (PrintWriter out = new PrintWriter(new FileWriter(this.buildFile))) {
out.print(buildContent);
}
}
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);
+7 -5
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@@ -20,7 +20,6 @@ dependencies {
}
}
def springAspectsOutput = project(":spring-aspects").sourceSets.main.output
javadoc {
javadocTool.set(javaToolchains.javadocToolFor({
languageVersion = JavaLanguageVersion.of(25)
@@ -49,8 +48,8 @@ javadoc {
maxMemory = "1024m"
doFirst {
classpath += files(
// ensure the javadoc process can resolve types compiled from .aj sources
springAspectsOutput
// ensure the javadoc process can resolve types compiled from .aj sources
project(":spring-aspects").sourceSets.main.output
)
classpath += files(moduleProjects.collect { it.sourceSets.main.compileClasspath })
}
@@ -99,9 +98,12 @@ tasks.register('schemaZip', Zip) {
moduleProjects.each { module ->
def Properties schemas = new Properties();
module.sourceSets.main.resources.find {
def schemaFile = module.sourceSets.main.resources.find {
(it.path.endsWith("META-INF/spring.schemas") || it.path.endsWith("META-INF\\spring.schemas"))
}?.withInputStream { schemas.load(it) }
}
if (schemaFile != null) {
schemaFile.withInputStream { schemas.load(it) }
}
for (def key : schemas.keySet()) {
def shortName = key.replaceAll(/http.*schema.(.*).spring-.*/, '$1')
+3 -5
View File
@@ -13,10 +13,8 @@ content:
- url: https://github.com/spring-projects/spring-framework
# Refname matching:
# https://docs.antora.org/antora/latest/playbook/content-refname-matching/
# branches: We include snapshots for main, 6.2.x, and 7.0.x to 9.*.x.
branches: ['main', '6.2.x', '{7..9}.+({0..9}).x']
# tags: include all releases from 6.2.0 to 9.*.*.
tags: ['v6.2.+({0..9})', 'v{7..9}.+({0..9}).+({0..9})?(-{RC,M}*)']
branches: ['main', '{6..9}.+({1..9}).x']
tags: ['v{6..9}.+({0..9}).+({0..9})?(-{RC,M}*)', '!(v6.0.{0..8})', '!(v6.0.0-{RC,M}{0..9})']
start_path: framework-docs
asciidoc:
extensions:
@@ -38,4 +36,4 @@ runtime:
failure_level: warn
ui:
bundle:
url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.26/ui-bundle.zip
url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.18/ui-bundle.zip
+7 -13
View File
@@ -15,15 +15,11 @@ apply from: "${rootDir}/gradle/publications.gradle"
antora {
options = [clean: true, fetch: !project.gradle.startParameter.offline, stacktrace: true]
environment = [
'BUILD_REFNAME': 'HEAD',
'BUILD_VERSION': project.version,
'BUILD_REFNAME': 'HEAD',
'BUILD_VERSION': project.version,
]
}
node {
version = '24.15.0'
}
tasks.named("generateAntoraYml") {
asciidocAttributes = project.provider( {
return ["spring-version": project.version ]
@@ -53,8 +49,8 @@ tasks.withType(KotlinCompilationTask.class).configureEach {
javaSources.from = []
compilerOptions.jvmTarget = JvmTarget.JVM_17
compilerOptions.freeCompilerArgs.addAll(
"-Xjdk-release=17", // Needed due to https://youtrack.jetbrains.com/issue/KT-49746
"-Xannotation-default-target=param-property" // Upcoming default, see https://youtrack.jetbrains.com/issue/KT-73255
"-Xjdk-release=17", // Needed due to https://youtrack.jetbrains.com/issue/KT-49746
"-Xannotation-default-target=param-property" // Upcoming default, see https://youtrack.jetbrains.com/issue/KT-73255
)
}
@@ -74,7 +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")
@@ -84,14 +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")
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**** 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[]
@@ -296,7 +296,6 @@
*** xref:web/webflux-functional.adoc[]
*** xref:web/webflux/uri-building.adoc[]
*** xref:web/webflux/range.adoc[]
*** xref:web/webflux/data-binding.adoc[]
*** xref:web/webflux-cors.adoc[]
*** xref:web/webflux-versioning.adoc[]
*** xref:web/webflux/ann-rest-exceptions.adoc[]
@@ -332,10 +331,9 @@
*** xref:testing/testcontext-framework/application-events.adoc[]
*** xref:testing/testcontext-framework/test-execution-events.adoc[]
*** xref:testing/testcontext-framework/ctx-management.adoc[]
**** xref:testing/testcontext-framework/ctx-management/javaconfig.adoc[]
**** xref:testing/testcontext-framework/ctx-management/xml.adoc[]
**** xref:testing/testcontext-framework/ctx-management/groovy.adoc[]
**** xref:testing/testcontext-framework/ctx-management/default-config.adoc[]
**** xref:testing/testcontext-framework/ctx-management/javaconfig.adoc[]
**** xref:testing/testcontext-framework/ctx-management/mixed-config.adoc[]
**** xref:testing/testcontext-framework/ctx-management/context-customizers.adoc[]
**** xref:testing/testcontext-framework/ctx-management/initializers.adoc[]
@@ -346,7 +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[]
@@ -452,13 +449,14 @@
*** xref:languages/kotlin/null-safety.adoc[]
*** xref:languages/kotlin/classes-interfaces.adoc[]
*** xref:languages/kotlin/annotations.adoc[]
*** xref:languages/kotlin/bean-registration-dsl.adoc[]
*** xref:languages/kotlin/bean-definition-dsl.adoc[]
*** xref:languages/kotlin/web.adoc[]
*** xref:languages/kotlin/coroutines.adoc[]
*** xref:languages/kotlin/spring-projects-in.adoc[]
*** xref:languages/kotlin/getting-started.adoc[]
*** xref:languages/kotlin/resources.adoc[]
** xref:languages/groovy.adoc[]
** xref:languages/dynamic.adoc[]
* xref:appendix.adoc[]
* {spring-framework-docs-root}/{spring-version}/javadoc-api/[Java API,window=_blank, role=link-external]
* {spring-framework-api-kdoc}/[Kotlin API,window=_blank, role=link-external]
@@ -74,11 +74,6 @@ expressions used in XML bean definitions, `@Value`, etc.
| The mode to use when compiling expressions for the
xref:core/expressions/evaluation.adoc#expressions-compiler-configuration[Spring Expression Language].
| `spring.expression.maxOperations`
| The default maximum number of operations permitted during
xref:core/expressions/evaluation.adoc#expressions-parser-configuration[Spring Expression Language]
expression evaluation.
| `spring.getenv.ignore`
| Instructs Spring to ignore operating system environment variables if a Spring
`Environment` property -- for example, a placeholder in a configuration String -- isn't
@@ -86,11 +81,6 @@ resolvable otherwise. See
{spring-framework-api}++/core/env/AbstractEnvironment.html#IGNORE_GETENV_PROPERTY_NAME++[`AbstractEnvironment`]
for details.
| `spring.http.response.flush.enabled`
| Configures the Spring MVC `ServletServerHttpResponse` to allow flushing on the `OutputStream`
returned by `ServletServerHttpResponse#getBody()`. By default, such flush calls are ignored and
only `ServletServerHttpResponse#flush()` will actually flush the response to the network.
| `spring.jdbc.getParameterType.ignore`
| Instructs Spring to ignore `java.sql.ParameterMetaData.getParameterType` completely.
See the note in xref:data-access/jdbc/advanced.adoc#jdbc-batch-list[Batch Operations with a List of Objects].
@@ -134,20 +124,11 @@ 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
xref:testing/testcontext-framework/ctx-management/failure-threshold.adoc[Context Failure Threshold].
| `spring.test.extension.context.scope`
| The default _extension context scope_ used by the `SpringExtension` in `@Nested` test
class hierarchies. See
xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-springextensionconfig[`@SpringExtensionConfig`].
| `spring.test.enclosing.configuration`
| The default _enclosing configuration inheritance mode_ to use if
`@NestedTestConfiguration` is not present on a test class. See
@@ -87,12 +87,14 @@ A crucial difference between Spring pooling and SLSB pooling is that Spring pool
be applied to any POJO. As with Spring in general, this service can be applied in a
non-invasive way.
Spring provides support for Commons Pool 2, which provides a
Spring provides support for Commons Pool 2.2, which provides a
fairly efficient pooling implementation. You need the `commons-pool` Jar on your
application's classpath to use this feature. You can also subclass
`org.springframework.aop.target.AbstractPoolingTargetSource` to support any other
pooling API.
NOTE: Commons Pool 1.5+ is also supported but is deprecated as of Spring Framework 4.2.
The following listing shows an example configuration:
[source,xml,indent=0,subs="verbatim,quotes"]
@@ -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
@@ -378,7 +378,7 @@ The container also supports creating a bean with {spring-framework-api}++/beans/
. The custom arguments require dynamic introspection of a matching constructor or factory method.
Those arguments cannot be detected by AOT, so the necessary reflection hints will have to be provided manually.
. Bypassing the instance supplier means that all other optimizations after creation are skipped as well.
. By-passing the instance supplier means that all other optimizations after creation are skipped as well.
For instance, autowiring on fields and methods will be skipped as they are handled in the instance supplier.
Rather than having prototype-scoped beans created with custom arguments, we recommend a manual factory pattern where a bean is responsible for the creation of the instance.
@@ -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.
@@ -151,17 +151,17 @@ injected into a `Set<MovieCatalog>` annotated with `@Qualifier("action")`.
[TIP]
====
Letting qualifier values select against target bean names, within the type-matching
candidates, does not require a `@Qualifier` annotation at the injection point. If there
is no other resolution indicator (such as a qualifier, a primary marker, or a fallback
marker), for a non-unique dependency situation, Spring matches the injection point name
(that is, the field name or parameter name) against the target bean names and chooses the
same-named candidate, if any (either by bean name or by associated alias).
candidates, does not require a `@Qualifier` annotation at the injection point.
If there is no other resolution indicator (such as a qualifier or a primary marker),
for a non-unique dependency situation, Spring matches the injection point name
(that is, the field name or parameter name) against the target bean names and chooses
the same-named candidate, if any (either by bean name or by associated alias).
Since version 6.1, this requires the `-parameters` Java compiler flag to be present. As
of 6.2, the container applies fast shortcut resolution for bean name matches, bypassing
the full type matching algorithm when the parameter name matches the bean name and no
type, qualifier, primary, or fallback conditions override the match. It is therefore
recommendable for your parameter names to match the target bean names.
Since version 6.1, this requires the `-parameters` Java compiler flag to be present.
As of 6.2, the container applies fast shortcut resolution for bean name matches,
bypassing the full type matching algorithm when the parameter name matches the
bean name and no type, qualifier or primary conditions override the match. It is
therefore recommendable for your parameter names to match the target bean names.
====
As an alternative for injection by name, consider the JSR-250 `@Resource` annotation
@@ -274,7 +274,7 @@ Kotlin::
Next, you can provide the information for the candidate bean definitions. You can add
`<qualifier/>` tags as sub-elements of the `<bean/>` tag and then specify the `type` and
`value` to match your custom qualifier annotations. The type is matched against the
fully-qualified class name of the annotation. Alternatively, as a convenience if no risk of
fully-qualified class name of the annotation. Alternately, as a convenience if no risk of
conflicting names exists, you can use the short class name. The following example
demonstrates both approaches:
@@ -309,8 +309,7 @@ set of multiple matches for the specific bean type (as returned by the factory m
Note that the standard `jakarta.annotation.Priority` annotation is not available at the
`@Bean` level, since it cannot be declared on methods. Its semantics can be modeled
through `@Order` values in combination with `@Primary` or `@Fallback` on a single bean
for each type.
through `@Order` values in combination with `@Primary` on a single bean for each type.
====
Even typed `Map` instances can be autowired as long as the expected key type is `String`.
@@ -27,5 +27,4 @@ with the `CustomAutowireConfigurer`
When multiple beans qualify as autowire candidates, the determination of a "`primary`" is
as follows: If exactly one bean definition among the candidates has a `primary`
attribute set to `true`, it is selected. For annotation-based configuration, see
xref:core/beans/annotation-config/autowired-primary.adoc[Fine-tuning with `@Primary` or `@Fallback`].
attribute set to `true`, it is selected.
@@ -239,6 +239,40 @@ The namespace itself provides the import directive feature. Further
configuration features beyond plain bean definitions are available in a selection
of XML namespaces provided by Spring -- for example, the `context` and `util` namespaces.
[[beans-factory-groovy]]
=== The Groovy Bean Definition DSL
As a further example for externalized configuration metadata, bean definitions can also
be expressed in Spring's Groovy Bean Definition DSL, as known from the Grails framework.
Typically, such configuration live in a ".groovy" file with the structure shown in the
following example:
[source,groovy,indent=0,subs="verbatim,quotes"]
----
beans {
dataSource(BasicDataSource) {
driverClassName = "org.hsqldb.jdbcDriver"
url = "jdbc:hsqldb:mem:grailsDB"
username = "sa"
password = ""
settings = [mynew:"setting"]
}
sessionFactory(SessionFactory) {
dataSource = dataSource
}
myService(MyService) {
nestedBean = { AnotherBean bean ->
dataSource = dataSource
}
}
}
----
This configuration style is largely equivalent to XML bean definitions and even
supports Spring's XML configuration namespaces. It also allows for importing XML
bean definition files through an `importBeans` directive.
[[beans-factory-client]]
== Using the Container
@@ -556,11 +556,18 @@ Kotlin::
======
If you do not want to rely on the default bean-naming strategy, you can provide a custom
bean-naming strategy. First, implement either the
{spring-framework-api}/beans/factory/support/BeanNameGenerator.html[`BeanNameGenerator`] or
{spring-framework-api}/context/annotation/ConfigurationBeanNameGenerator.html[`ConfigurationBeanNameGenerator`]
bean-naming strategy. First, implement the
{spring-framework-api}/beans/factory/support/BeanNameGenerator.html[`BeanNameGenerator`]
interface, and be sure to include a default no-arg constructor. Then, provide the fully
qualified class name when configuring the scanner, as the following examples show.
qualified class name when configuring the scanner, as the following example annotation
and bean definition show.
TIP: If you run into naming conflicts due to multiple autodetected components having the
same non-qualified class name (i.e., classes with identical names but residing in
different packages), you may need to configure a `BeanNameGenerator` that defaults to the
fully qualified class name for the generated bean name. The
`FullyQualifiedAnnotationBeanNameGenerator` located in package
`org.springframework.context.annotation` can be used for such purposes.
[tabs]
======
@@ -595,27 +602,6 @@ Kotlin::
</beans>
----
[TIP]
====
If you run into naming conflicts due to multiple autodetected components having the same
non-qualified class name (for example, classes with identical names but residing in
different packages), you can configure a `BeanNameGenerator` that defaults to the
fully-qualified class name for the generated bean name. The
`FullyQualifiedAnnotationBeanNameGenerator` can be used for such purposes.
As of Spring Framework 7.0, if you encounter naming conflicts among `@Bean` methods in
`@Configuration` classes, you can alternatively configure a
`ConfigurationBeanNameGenerator` that generates unique bean names for `@Bean` methods.
The `FullyQualifiedConfigurationBeanNameGenerator` can be used to generate
fully-qualified default bean names for `@Bean` methods without an explicit `name`
attribute — for example, `com.example.MyConfig.myBean` for an `@Bean` method named
`myBean()` declared in `@Configuration` class `com.example.MyConfig`.
The `FullyQualifiedAnnotationBeanNameGenerator` and
`FullyQualifiedConfigurationBeanNameGenerator` both reside in the
`org.springframework.context.annotation` package.
====
As a general rule, consider specifying the name with the annotation whenever other
components may be making explicit references to it. On the other hand, the
auto-generated names are adequate whenever the container is responsible for wiring.
@@ -1059,10 +1045,10 @@ methods anywhere. However, regular `@Bean` methods in `@Configuration` classes n
to be overridable -- that is, they must not be declared as `private` or `final`.
`@Bean` methods are also discovered on base classes of a given component or
configuration class, as well as on Java default methods declared in interfaces
configuration class, as well as on Java 8 default methods declared in interfaces
implemented by the component or configuration class. This allows for a lot of
flexibility in composing complex configuration arrangements, with even multiple
inheritance being possible through Java default methods.
inheritance being possible through Java 8 default methods as of Spring 4.2.
Finally, a single class may hold multiple `@Bean` methods for the same
bean, as an arrangement of multiple factory methods to use depending on available
@@ -575,7 +575,7 @@ Kotlin::
----
======
NOTE: Do not define such beans to be lazy as the `ApplicationContext` will honor that and will not register the method to listen to events.
NOTE: Do not define such beans to be lazy as the `ApplicationContext` will honour that and will not register the method to listen to events.
The method signature once again declares the event type to which it listens,
but, this time, with a flexible name and without implementing a specific listener interface.
@@ -99,7 +99,7 @@ the `@Bean` factory method in favor of any pre-declared constructor on the bean
****
NOTE: We acknowledge that overriding beans in test scenarios is convenient, and there is
explicit support for this. Please refer to
explicit support for this as of Spring Framework 6.2. Please refer to
xref:testing/testcontext-framework/bean-overriding.adoc[this section] for more details.
@@ -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:
@@ -67,13 +67,6 @@ interface, clearly indicating the post-processor nature of that bean. Otherwise,
Since a `BeanPostProcessor` needs to be instantiated early in order to apply to the
initialization of other beans in the context, this early type detection is critical.
Furthermore, when registering a `BeanPostProcessor` via an `@Bean` factory method,
declare the method as `static` and ideally with no dependencies. Doing so avoids eager
initialization of the configuration class and other beans, which would make them
ineligible for full post-processing (such as auto-proxying). See the
"BeanPostProcessor-returning `@Bean` methods" section in the
{spring-framework-api}/context/annotation/Bean.html[`@Bean`] javadoc for details.
[[beans-factory-programmatically-registering-beanpostprocessors]]
.Programmatically registering `BeanPostProcessor` instances
NOTE: While the recommended approach for `BeanPostProcessor` registration is through
@@ -87,7 +80,7 @@ of execution. Note also that `BeanPostProcessor` instances registered programmat
are always processed before those registered through auto-detection, regardless of any
explicit ordering.
.`BeanPostProcessor` instances and early initialization
.`BeanPostProcessor` instances and AOP auto-proxying
[NOTE]
====
Classes that implement the `BeanPostProcessor` interface are special and are treated
@@ -97,23 +90,17 @@ of the `ApplicationContext`. Next, all `BeanPostProcessor` instances are registe
in a sorted fashion and applied to all further beans in the container. Because AOP
auto-proxying is implemented as a `BeanPostProcessor` itself, neither `BeanPostProcessor`
instances nor the beans they directly reference are eligible for auto-proxying and,
thus, do not have aspects woven into them. More generally, any bean that is instantiated
during this early phase is not eligible for full post-processing by all
`BeanPostProcessor` instances.
thus, do not have aspects woven into them.
For any such bean, you should see a WARN-level log message similar to the following.
For any such bean, you should see an informational log message: `Bean someBean is not
eligible for getting processed by all BeanPostProcessor interfaces (for example: not
eligible for auto-proxying)`.
[quote]
Bean 'someBean' of type [org.example.SomeType] is not eligible for getting processed by
all BeanPostProcessors (for example: not eligible for auto-proxying).
To minimize the number of beans affected, register a `BeanPostProcessor` with a
`static` `@Bean` method that has no dependencies (see the note above). If you have
beans wired into your `BeanPostProcessor` by using autowiring or `@Resource` (which
may fall back to autowiring), Spring might access unexpected beans when searching
for type-matching dependency candidates and, therefore, make them ineligible for
auto-proxying or other kinds of bean post-processing. For example, if you have a
dependency annotated with `@Resource` where the field or setter name does not
If you have beans wired into your `BeanPostProcessor` by using autowiring or
`@Resource` (which may fall back to autowiring), Spring might access unexpected beans
when searching for type-matching dependency candidates and, therefore, make them
ineligible for auto-proxying or other kinds of bean post-processing. For example, if you
have a dependency annotated with `@Resource` where the field or setter name does not
directly correspond to the declared name of a bean and no name attribute is used,
Spring accesses other beans for matching them by type.
====
@@ -148,7 +135,7 @@ Java::
}
public Object postProcessAfterInitialization(Object bean, String beanName) {
System.out.println("Bean '" + beanName + "' created : " + bean);
System.out.println("Bean '" + beanName + "' created : " + bean.toString());
return bean;
}
}
@@ -177,48 +164,7 @@ Kotlin::
----
======
You can register the `InstantiationTracingBeanPostProcessor` with Java configuration
by using a `static` `@Bean` method (recommended to avoid eager initialization of the
configuration class and other beans):
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
@Configuration
public class AppConfig {
@Bean
public static InstantiationTracingBeanPostProcessor instantiationTracingBeanPostProcessor() {
return new InstantiationTracingBeanPostProcessor();
}
// ... other bean definitions
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
@Configuration
class AppConfig {
@Bean
companion object {
@JvmStatic
fun instantiationTracingBeanPostProcessor() = InstantiationTracingBeanPostProcessor()
}
// ... other bean definitions
}
----
======
Alternatively, the `InstantiationTracingBeanPostProcessor` can be registered via the
`bean` element with XML configuration:
The following `beans` element uses the `InstantiationTracingBeanPostProcessor`:
[source,xml,indent=0,subs="verbatim,quotes"]
----
@@ -246,9 +192,10 @@ Alternatively, the `InstantiationTracingBeanPostProcessor` can be registered via
----
Notice how the `InstantiationTracingBeanPostProcessor` is merely defined. It does not
even have a name, and, because it is a bean, it can be dependency-injected as with any
even have a name, and, because it is a bean, it can be dependency-injected as you would any
other bean. (The preceding configuration also defines a bean that is backed by a Groovy
script.)
script. The Spring dynamic language support is detailed in the chapter entitled
xref:languages/dynamic.adoc[Dynamic Language Support].)
The following Java application runs the preceding code and configuration:
@@ -354,23 +301,6 @@ implement the `BeanFactoryPostProcessor` interface. It uses these beans as bean
post-processors, at the appropriate time. You can deploy these post-processor beans as
you would any other bean.
When registering a `BeanFactoryPostProcessor` via an `@Bean` factory method in a
`@Configuration` class, declare the method as `static` to avoid lifecycle conflicts
with annotation processing (such as `@Autowired`, `@Value`, and `@PostConstruct`) in the
configuration class. See the "BeanFactoryPostProcessor-returning `@Bean` methods"
section in the {spring-framework-api}/context/annotation/Bean.html[`@Bean`] javadoc
for details and an example.
For any non-static `@Bean` factory method with a `BeanFactoryPostProcessor` return type,
you should see an INFO-level log message similar to the following.
[quote]
@Bean method MyConfig.myBfpp is non-static and returns an object assignable to Spring's
BeanFactoryPostProcessor interface. This will result in a failure to process annotations
such as @Autowired, @Resource, and @PostConstruct within the method's declaring
@Configuration class. Add the 'static' modifier to this method to avoid these container
lifecycle issues; see @Bean javadoc for complete details.
NOTE: As with ``BeanPostProcessor``s , you typically do not want to configure
``BeanFactoryPostProcessor``s for lazy initialization. If no other bean references a
`Bean(Factory)PostProcessor`, that post-processor will not get instantiated at all.
@@ -4,10 +4,10 @@
`@Bean` is a method-level annotation and a direct analog of the XML `<bean/>` element.
The annotation supports some of the attributes offered by `<bean/>`, such as:
* xref:core/beans/definition.adoc#beans-beanname[name]
* xref:core/beans/factory-nature.adoc#beans-factory-lifecycle-initializingbean[init-method]
* xref:core/beans/factory-nature.adoc#beans-factory-lifecycle-disposablebean[destroy-method]
* xref:core/beans/dependencies/factory-autowire.adoc[autowiring]
* `name`.
You can use the `@Bean` annotation in a `@Configuration`-annotated or in a
`@Component`-annotated class.
@@ -17,10 +17,9 @@ You can use the `@Bean` annotation in a `@Configuration`-annotated or in a
== Declaring a Bean
To declare a bean, you can annotate a method with the `@Bean` annotation. You use this
method to register a bean definition within an `ApplicationContext` of the type specified
by the method's return type. By default, the bean name is the same as the method name
(unless a different xref:#beans-java-customizing-bean-naming[bean name generator] is
configured). The following example shows a `@Bean` method declaration:
method to register a bean definition within an `ApplicationContext` of the type
specified as the method's return value. By default, the bean name is the same as
the method name. The following example shows a `@Bean` method declaration:
[tabs]
======
@@ -127,7 +126,7 @@ Kotlin::
----
======
However, this limits the visibility for advanced type prediction to the specified
However, this limits the visibility for advance type prediction to the specified
interface type (`TransferService`). Then, with the full type (`TransferServiceImpl`)
known to the container only once the affected singleton bean has been instantiated.
Non-lazy singleton beans get instantiated according to their declaration order,
@@ -474,15 +473,8 @@ Kotlin::
== Customizing Bean Naming
By default, configuration classes use a `@Bean` method's name as the name of the
resulting bean. However, as of Spring Framework 7.0, you can change this default strategy
by configuring a custom
{spring-framework-api}/context/annotation/ConfigurationBeanNameGenerator.html[`ConfigurationBeanNameGenerator`]
when bootstrapping the context or configuring component scanning. For example,
{spring-framework-api}/context/annotation/FullyQualifiedConfigurationBeanNameGenerator.html[`FullyQualifiedConfigurationBeanNameGenerator`]
can be used to generate fully-qualified default bean names for `@Bean` methods without an
explicit `name` attribute. For individual `@Bean` methods, the default or
generator-derived name can be overridden with the `name` attribute, as the following
example shows:
resulting bean. This functionality can be overridden, however, with the `name` attribute,
as the following example shows:
[tabs]
======
@@ -513,7 +505,6 @@ Kotlin::
----
======
NOTE: `@Bean("myThing")` is equivalent to `@Bean(name = "myThing")`.
[[beans-java-bean-aliasing]]
== Bean Aliasing
@@ -327,8 +327,9 @@ Kotlin::
----
======
TIP: Note that there is no need to specify `@Autowired` if the target bean defines
only one constructor.
TIP: Constructor injection in `@Configuration` classes is only supported as of Spring
Framework 4.3. Note also that there is no need to specify `@Autowired` if the target
bean defines only one constructor.
[discrete]
[[beans-java-injecting-imported-beans-fq]]
@@ -338,11 +339,11 @@ 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
@@ -610,19 +611,6 @@ Kotlin::
See the {spring-framework-api}/context/annotation/Conditional.html[`@Conditional`]
javadoc for more detail.
[NOTE]
====
A `@Conditional` annotation declared on an enclosing `@Configuration` class is only
applied to the registration of a nested `@Configuration` class if the nested class is
reached through the parser's recursion from its enclosing class, or via `@Import`. If a
nested class is discovered independently of its enclosing class — for example, via
`@ComponentScan` or by directly registering it against the application context — it is
processed using only its own `@Conditional` annotations. Thus, if you wish to ensure that
the same `@Conditional` annotations apply in such scenarios, you must redeclare the
relevant annotations on the nested class, or extract them into a composed annotation
which you apply to both the enclosing class and the nested class.
====
[[beans-java-combining]]
== Combining Java and XML Configuration
@@ -9,7 +9,28 @@ efficient way.
Those bean registrar implementations are typically imported with an `@Import` annotation
on `@Configuration` classes.
include-code::./MyConfiguration[tag=snippet,indent=0]
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
@Configuration
@Import(MyBeanRegistrar.class)
class MyConfiguration {
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@Configuration
@Import(MyBeanRegistrar::class)
class MyConfiguration {
}
----
======
NOTE: You can leverage type-level conditional annotations ({spring-framework-api}/context/annotation/Conditional.html[`@Conditional`],
but also other variants) to conditionally import the related bean registrars.
@@ -19,7 +40,49 @@ The bean registrar implementation uses {spring-framework-api}/beans/factory/Bean
and flexible way. For example, it allows custom registration through an `if` expression, a
`for` loop, etc.
include-code::./MyBeanRegistrar[tag=snippet,indent=0]
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
class MyBeanRegistrar implements BeanRegistrar {
@Override
public void register(BeanRegistry registry, Environment env) {
registry.registerBean("foo", Foo.class);
registry.registerBean("bar", Bar.class, spec -> spec
.prototype()
.lazyInit()
.description("Custom description")
.supplier(context -> new Bar(context.bean(Foo.class))));
if (env.matchesProfiles("baz")) {
registry.registerBean(Baz.class, spec -> spec
.supplier(context -> new Baz("Hello World!")));
}
}
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
class MyBeanRegistrar : BeanRegistrarDsl({
registerBean<Foo>()
registerBean(
name = "bar",
prototype = true,
lazyInit = true,
description = "Custom description") {
Bar(bean<Foo>())
}
profile("baz") {
registerBean { Baz("Hello World!") }
}
})
----
======
NOTE: Bean registrars are supported with xref:core/aot.adoc[Ahead of Time Optimizations],
either on the JVM or with GraalVM native images, including when instance suppliers are used.
@@ -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
@@ -395,16 +395,6 @@ set a JVM system property or Spring property named `spring.context.expression.ma
to the maximum expression length needed by your application (see
xref:appendix.adoc#appendix-spring-properties[Supported Spring Properties]).
Similarly, the number of operations performed during the evaluation of a SpEL expression
cannot exceed 10,000 by default; however, the `maxOperations` value is configurable. If
you create a `SpelExpressionParser` programmatically (the recommend approach), you can
specify a custom `maxOperations` value when creating the `SpelParserConfiguration` that
you provide to the `SpelExpressionParser`. If you are not able to configure an explicit
value for `maxOperations` via `SpelParserConfiguration`, you can set a JVM system
property or Spring property named `spring.expression.maxOperations` to the maximum number
of operations required by your application (see
xref:appendix.adoc#appendix-spring-properties[Supported Spring Properties]).
[[expressions-spel-compilation]]
== SpEL Compilation
@@ -2,12 +2,4 @@
= Language Reference
:page-section-summary-toc: 1
Spring Expression Language (SpEL) expressions are composed of a sequence of tokens such
as literals, operators, method invocations, and so forth.
Whitespace can be used freely between tokens to format and improve the readability of
expressions. Specifically, the `\s` (space), `\t` (tab), `\r` (carriage return), and `\n`
(newline) characters are all valid separators between tokens. However, whitespace is
ignored by the expression parser unless it is part of a string literal.
The following sections describe the features and syntax of SpEL.
This section describes how the Spring Expression Language works.
@@ -53,7 +53,7 @@ Kotlin::
val trueValue = parser.parseExpression("'black' < 'block'").getValue(Boolean::class.java)
// uses CustomValue:::compareTo
val trueValue = parser.parseExpression("new CustomValue(1) < new CustomValue(2)").getValue(Boolean::class.java)
val trueValue = parser.parseExpression("new CustomValue(1) < new CustomValue(2)").getValue(Boolean::class.java);
----
======
@@ -167,7 +167,7 @@ Kotlin::
[CAUTION]
====
The syntax for the `between` operator is `<input> between {<range_begin>, <range_end>}`,
which is effectively a shortcut for `<input> >= <range_begin> && <input> \<= <range_end>`.
which is effectively a shortcut for `<input> >= <range_begin> && <input> \<= <range_end>}`.
Consequently, `1 between {1, 5}` evaluates to `true`, while `1 between {5, 1}` evaluates
to `false`.
@@ -312,13 +312,13 @@ Kotlin::
// evaluates to 'a'
val ch = parser.parseExpression("'d' - 3")
.getValue(Char::class.java)
.getValue(Character::class.java);
// -- Repeat --
// evaluates to "abcabc"
val repeated = parser.parseExpression("'abc' * 2")
.getValue(String::class.java)
.getValue(String::class.java);
----
======
@@ -485,7 +485,7 @@ Kotlin::
// -- Operator precedence --
val minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Int::class.java) // -21
val minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Int::class.java) // -21
----
======
@@ -541,7 +541,32 @@ For example, if we want to overload the `ADD` operator to allow two lists to be
concatenated using the `+` sign, we can implement a custom `OperatorOverloader` as
follows.
include-code::./ListConcatenation[]
[source,java,indent=0,subs="verbatim,quotes"]
----
pubic class ListConcatenation implements OperatorOverloader {
@Override
public boolean overridesOperation(Operation operation, Object left, Object right) {
return (operation == Operation.ADD &&
left instanceof List && right instanceof List);
}
@Override
@SuppressWarnings("unchecked")
public Object operate(Operation operation, Object left, Object right) {
if (operation == Operation.ADD &&
left instanceof List list1 && right instanceof List list2) {
List result = new ArrayList(list1);
result.addAll(list2);
return result;
}
throw new UnsupportedOperationException(
"No overload for operation %s and operands [%s] and [%s]"
.formatted(operation, left, right));
}
}
----
If we register `ListConcatenation` as the `OperatorOverloader` in a
`StandardEvaluationContext`, we can then evaluate expressions like `{1, 2, 3} + {4, 5}`
@@ -564,8 +589,8 @@ Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
val context = StandardEvaluationContext()
context.operatorOverloader = ListConcatenation()
StandardEvaluationContext context = StandardEvaluationContext()
context.setOperatorOverloader(ListConcatenation())
// evaluates to a new list: [1, 2, 3, 4, 5]
parser.parseExpression("{1, 2, 3} + {2 + 2, 5}").getValue(context, List::class.java)
@@ -270,7 +270,7 @@ is applicable for typical implementations of indexed structures.
NOTE: `ReflectiveIndexAccessor` also implements `CompilableIndexAccessor` in order to
support xref:core/expressions/evaluation.adoc#expressions-spel-compilation[compilation]
to bytecode for read access. Note, however, that the configured read-method must be
invocable via a `public` class or `public` interface for compilation to succeed.
invokable via a `public` class or `public` interface for compilation to succeed.
The following code listings define a `Color` enum and `FruitMap` type that behaves like a
map but does not implement the `java.util.Map` interface. Thus, if you want to index into
@@ -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
@@ -23,20 +23,8 @@ public void sendNotification() {
}
----
By default, the method invocation will be retried for any exception thrown: with at most
3 retry attempts (`maxRetries = 3`) after an initial failure, and a delay of 1 second
between attempts. If all attempts have failed and the retry policy has been exhausted,
the last original exception from the target method will be propagated to the caller.
[NOTE]
====
A `@Retryable` method will be invoked at least once and retried at most `maxRetries`
times, where `maxRetries` is the maximum number of retry attempts. Specifically,
`total attempts = 1 initial attempt + maxRetries attempts`.
For example, if `maxRetries` is set to `4`, the `@Retryable` method will be invoked at
least once and at most 5 times.
====
By default, the method invocation will be retried for any exception thrown: with at most 3
retry attempts after an initial failure, and a delay of 1 second between attempts.
This can be specifically adapted for every method if necessary — for example, by narrowing
the exceptions to retry via the `includes` and `excludes` attributes. The supplied
@@ -65,17 +53,17 @@ Custom predicates can be combined with `includes` and `excludes`; however, custo
predicates will always be applied after `includes` and `excludes` have been applied.
====
Or for 4 retry attempts and an exponential back-off strategy with a bit of jitter:
Or for 5 retry attempts and an exponential back-off strategy with a bit of jitter:
[source,java,indent=0,subs="verbatim,quotes"]
----
@Retryable(
includes = MessageDeliveryException.class,
maxRetries = 4,
delay = 100,
jitter = 10,
multiplier = 2,
maxDelay = 1000)
includes = MessageDeliveryException.class,
maxAttempts = 5,
delay = 100,
jitter = 10,
multiplier = 2,
maxDelay = 1000)
public void sendNotification() {
this.jmsClient.destination("notifications").send(...);
}
@@ -86,7 +74,7 @@ type, decorating the pipeline with Reactor's retry capabilities:
[source,java,indent=0,subs="verbatim,quotes"]
----
@Retryable(maxRetries = 4, delay = 100)
@Retryable(maxAttempts = 5, delay = 100)
public Mono<Void> sendNotification() {
return Mono.from(...); // <1>
}
@@ -100,13 +88,6 @@ TIP: Several attributes in `@Retryable` have `String` variants that provide prop
placeholder and SpEL support, as an alternative to the specifically typed annotation
attributes used in the above examples.
[TIP]
====
During `@Retryable` processing, Spring publishes a `MethodRetryEvent` for every exception
coming out of the target method. This can be used to track/log all original exceptions
whereas the caller of the `@Retryable` method will only ever see the last exception.
====
[[resilience-annotations-concurrencylimit]]
== `@ConcurrencyLimit`
@@ -182,36 +163,25 @@ configured {spring-framework-api}/core/retry/RetryPolicy.html[`RetryPolicy`].
----
var retryTemplate = new RetryTemplate(); // <1>
retryTemplate.invoke(
retryTemplate.execute(
() -> jmsClient.destination("notifications").send(...));
----
<1> Implicitly uses `RetryPolicy.withDefaults()`.
By default, a retryable operation will be retried for any exception thrown: with at most
3 retry attempts (`maxRetries = 3`) after an initial failure, and a delay of 1 second
between attempts.
[NOTE]
====
A retryable operation will be executed at least once and retried at most `maxRetries`
times, where `maxRetries` is the maximum number of retry attempts. Specifically,
`total attempts = 1 initial attempt + maxRetries attempts`.
For example, if `maxRetries` is set to `4`, the retryable operation will be invoked at
least once and at most 5 times.
====
By default, a retryable operation will be retried for any exception thrown: with at most 3
retry attempts after an initial failure, and a delay of 1 second between attempts.
If you only need to customize the number of retry attempts, you can use the
`RetryPolicy.withMaxRetries()` factory method as demonstrated below.
`RetryPolicy.withMaxAttempts()` factory method as demonstrated below.
[source,java,indent=0,subs="verbatim,quotes"]
----
var retryTemplate = new RetryTemplate(RetryPolicy.withMaxRetries(4)); // <1>
var retryTemplate = new RetryTemplate(RetryPolicy.withMaxAttempts(5)); // <1>
retryTemplate.invoke(
retryTemplate.execute(
() -> jmsClient.destination("notifications").send(...));
----
<1> Explicitly uses `RetryPolicy.withMaxRetries(4)`.
<1> Explicitly uses `RetryPolicy.withMaxAttempts(5)`.
If you need to narrow the types of exceptions to retry, that can be achieved via the
`includes()` and `excludes()` builder methods. The supplied exception types will be
@@ -226,7 +196,7 @@ matched against an exception thrown by a failed operation as well as nested caus
var retryTemplate = new RetryTemplate(retryPolicy);
retryTemplate.invoke(
retryTemplate.execute(
() -> jmsClient.destination("notifications").send(...));
----
<1> Specify one or more exception types to include.
@@ -243,14 +213,14 @@ Custom predicates can be combined with `includes` and `excludes`; however, custo
predicates will always be applied after `includes` and `excludes` have been applied.
====
The following example demonstrates how to configure a `RetryPolicy` with 4 retry attempts
The following example demonstrates how to configure a `RetryPolicy` with 5 retry attempts
and an exponential back-off strategy with a bit of jitter.
[source,java,indent=0,subs="verbatim,quotes"]
----
var retryPolicy = RetryPolicy.builder()
.includes(MessageDeliveryException.class)
.maxRetries(4)
.maxAttempts(5)
.delay(Duration.ofMillis(100))
.jitter(Duration.ofMillis(10))
.multiplier(2)
@@ -259,101 +229,21 @@ and an exponential back-off strategy with a bit of jitter.
var retryTemplate = new RetryTemplate(retryPolicy);
retryTemplate.invoke(
retryTemplate.execute(
() -> jmsClient.destination("notifications").send(...));
----
[TIP]
====
A {spring-framework-api}/core/retry/RetryListener.html[`RetryListener`] can be registered
with a `RetryTemplate` to react to events published during key retry phases (before a
retry attempt, after a retry attempt, etc.), and you can compose multiple listeners via a
{spring-framework-api}/core/retry/support/CompositeRetryListener.html[`CompositeRetryListener`].
====
Although the factory methods and builder API for `RetryPolicy` cover most common
configuration scenarios, you can implement a custom `RetryPolicy` for complete control
over the types of exceptions that should trigger a retry as well as the
{spring-framework-api}/util/backoff/BackOff.html[`BackOff`] strategy to use. Note that
you can also configure a customized `BackOff` strategy via the `backOff()` method in
the `RetryPolicy.Builder`.
====
Note that the examples above apply a pattern similar to `@Retryable` method invocations
where the last original exception will be propagated to the caller, using the `invoke`
variants on `RetryTemplate` which are available with and without a return value.
The callback may throw unchecked exceptions, the last one of which is exposed for
direct handling on the caller side:
[source,java,indent=0,subs="verbatim,quotes"]
----
try {
retryTemplate.invoke(
() -> jmsClient.destination("notifications").send(...));
}
catch (MessageDeliveryException ex) {
// coming out of the original JmsClient send method
}
----
[source,java,indent=0,subs="verbatim,quotes"]
----
try {
var result = retryTemplate.invoke(() -> {
jmsClient.destination("notifications").send(...);
return "result";
});
}
catch (MessageDeliveryException ex) {
// coming out of the original JmsClient send method
}
----
`RetryTemplate` instances are very light and can be created on the fly,
potentially with a specific retry policy to use for a given invocation:
[source,java,indent=0,subs="verbatim,quotes"]
----
try {
new RetryTemplate(RetryPolicy.withMaxRetries(4)).invoke(
() -> jmsClient.destination("notifications").send(...));
}
catch (MessageDeliveryException ex) {
// coming out of the original JmsClient send method
}
----
For deeper interaction, you may use RetryTemplate's `execute` method. The caller will
have to handle the checked `RetryException` thrown by `RetryTemplate`, exposing the
outcome of all attempts:
[source,java,indent=0,subs="verbatim,quotes"]
----
try {
var result = retryTemplate.execute(() -> {
jmsClient.destination("notifications").send(...);
return "result";
});
}
catch (RetryException ex) {
// ex.getExceptions() / ex.getLastException() ...
}
----
A {spring-framework-api}/core/retry/RetryListener.html[`RetryListener`] can be registered
with a `RetryTemplate` to react to key retry steps (before or after a retry attempt etc.)
or simply to every invocation attempt, being able to track all exceptions coming out of
the callback and all retry outcomes (exhaustion, interruption, timeout). This is
particularly useful when using `invoke` where no retry state other than the last
original exception is exposed otherwise:
[source,java,indent=0,subs="verbatim,quotes"]
----
var retryTemplate = new RetryTemplate();
retryTemplate.setRetryListener(new RetryListener() {
@Override
public void onRetryableExecution(RetryPolicy retryPolicy, Retryable<?> retryable, RetryState retryState) {
...
}
});
retryTemplate.invoke(
() -> jmsClient.destination("notifications").send(...));
----
You can also compose multiple listeners via a
{spring-framework-api}/core/retry/support/CompositeRetryListener.html[`CompositeRetryListener`].
{spring-framework-api}/util/backoff/BackOff.html[`BackOff`] strategy to use. Note that you
can also configure a customized `BackOff` strategy via the `backOff()` method in the
`RetryPolicy.Builder`.
@@ -347,10 +347,10 @@ recognized and used as the `PropertyEditor` for `Something`-typed properties.
[literal,subs="verbatim,quotes"]
----
com
└── example
└── things
├── *Something*
└── *SomethingEditor* // the PropertyEditor for the Something class
chank
pop
Something
SomethingEditor // the PropertyEditor for the Something class
----
Note that you can also use the standard `BeanInfo` JavaBeans mechanism here as well
@@ -362,10 +362,10 @@ following example uses the `BeanInfo` mechanism to explicitly register one or mo
[literal,subs="verbatim,quotes"]
----
com
└── example
└── things
├── *Something*
└── *SomethingBeanInfo* // the BeanInfo for the Something class
chank
pop
Something
SomethingBeanInfo // the BeanInfo for the Something class
----
The following Java source code for the referenced `SomethingBeanInfo` class
@@ -676,7 +676,7 @@ provides `firstName` and `lastName` properties, such as the `Actor` class from a
[source,java,indent=0,subs="verbatim,quotes"]
----
this.jdbcClient.sql("insert into t_actor (first_name, last_name) values (:firstName, :lastName)")
.paramSource(new Actor("Leonor", "Watling"))
.paramSource(new Actor("Leonor", "Watling")
.update();
----
@@ -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.
====
@@ -8,7 +8,7 @@ danger of undue coupling, because code that is meant to be used transactionally
almost always deployed that way anyway.
NOTE: The standard `jakarta.transaction.Transactional` annotation is also supported as
a drop-in replacement for Spring's own annotation. Please refer to the JTA documentation
a drop-in replacement to Spring's own annotation. Please refer to the JTA documentation
for more details.
The ease-of-use afforded by the use of the `@Transactional` annotation is best
@@ -89,16 +89,47 @@ annotation in a `@Configuration` class. See the
{spring-framework-api}/transaction/annotation/EnableTransactionManagement.html[javadoc]
for full details.
The following example shows the configuration needed to enable annotation-driven transaction management:
In XML configuration, the `<tx:annotation-driven/>` tag provides similar convenience:
include-code::./AppConfig[tag=snippet,indent=0]
[source,xml,indent=0,subs="verbatim,quotes"]
----
<!-- from the file 'context.xml' -->
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
https://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd">
TIP: In programmatic configuration, the `@EnableTransactionManagement` annotation uses any
`TransactionManager` bean in the context. In XML configuration, you can omit
the `transaction-manager` attribute in the `<tx:annotation-driven/>` tag if the bean
name of the `TransactionManager` that you want to wire in has the name `transactionManager`.
If the `TransactionManager` bean has any other name, you have to use the
`transaction-manager` attribute explicitly, as in the preceding example.
<!-- this is the service object that we want to make transactional -->
<bean id="fooService" class="x.y.service.DefaultFooService"/>
<!-- enable the configuration of transactional behavior based on annotations -->
<!-- a TransactionManager is still required -->
<tx:annotation-driven transaction-manager="txManager"/> <1>
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- (this dependency is defined somewhere else) -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- other <bean/> definitions here -->
</beans>
----
<1> The line that makes the bean instance transactional.
TIP: You can omit the `transaction-manager` attribute in the `<tx:annotation-driven/>`
tag if the bean name of the `TransactionManager` that you want to wire in has the name
`transactionManager`. If the `TransactionManager` bean that you want to dependency-inject
has any other name, you have to use the `transaction-manager` attribute, as in the
preceding example.
Reactive transactional methods use reactive return types in contrast to imperative
programming arrangements as the following listing shows:
@@ -203,10 +234,8 @@ on an interface, a class definition, or a method on a class. However, the mere p
of the `@Transactional` annotation is not enough to activate the transactional behavior.
The `@Transactional` annotation is merely metadata that can be consumed by corresponding
runtime infrastructure which uses that metadata to configure the appropriate beans with
transactional behavior. In the preceding examples that use programmatic configuration,
the `@EnableTransactionManagement` annotation switches on actual transaction management
at runtime. Whereas, in the preceding example that uses XML configuration, the
`<tx:annotation-driven/>` element switches on actual transaction management at runtime.
transactional behavior. In the preceding example, the `<tx:annotation-driven/>` element
switches on actual transaction management at runtime.
TIP: The Spring team recommends that you annotate methods of concrete classes with the
`@Transactional` annotation, rather than relying on annotated methods in interfaces,
@@ -22,7 +22,7 @@ where all the underlying resources have to participate in the service-level tran
NOTE: By default, a participating transaction joins the characteristics of the outer scope,
silently ignoring the local isolation level, timeout value, or read-only flag (if any).
Consider switching the `validateExistingTransaction` flag to `true` on your transaction
Consider switching the `validateExistingTransactions` flag to `true` on your transaction
manager if you want isolation level declarations to be rejected when participating in
an existing transaction with a different isolation level. This non-lenient mode also
rejects read-only mismatches (that is, an inner read-write transaction that tries to participate
@@ -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.
@@ -1,15 +1,10 @@
[[observability]]
= Observability Support
With https://docs.micrometer.io/micrometer/reference/concepts.html[Micrometer], developers can instrument libraries and applications for metrics (timers, gauges, counters)
that collect statistics about their runtime behavior. Metrics can help you to track error rates, usage patterns, performance, and more.
https://docs.micrometer.io/tracing/reference/[Micrometer can also produce traces], giving you a holistic view of an entire system, crossing application boundaries; you can zoom in on particular user requests and follow their entire completion across applications.
Micrometer defines an {micrometer-docs}/observation.html[Observation concept that enables both Metrics and Traces] in applications.
Each observation will produce:
* https://docs.micrometer.io/micrometer/reference/observation/components.html#micrometer-observation-default-meter-handler[several metrics - a timer, a long task timer and many counters]
* a https://docs.micrometer.io/tracing/reference/glossary.html[span for the current trace]
Metrics support offers a way to create timers, gauges, or counters for collecting statistics about the runtime behavior of your application.
Metrics can help you to track error rates, usage patterns, performance, and more.
Traces provide a holistic view of an entire system, crossing application boundaries; you can zoom in on particular user requests and follow their entire completion across applications.
Spring Framework instruments various parts of its own codebase to publish observations if an `ObservationRegistry` is configured.
You can learn more about {spring-boot-docs-ref}/actuator/observability.html[configuring the observability infrastructure in Spring Boot].
@@ -5,7 +5,7 @@ The Spring Framework provides the following choices for making calls to REST end
* xref:integration/rest-clients.adoc#rest-restclient[`RestClient`] -- synchronous client with a fluent API
* xref:integration/rest-clients.adoc#rest-webclient[`WebClient`] -- non-blocking, reactive client with fluent API
* xref:integration/rest-clients.adoc#rest-resttemplate[`RestTemplate`] -- synchronous client with template method API, now deprecated in favor of `RestClient`
* xref:integration/rest-clients.adoc#rest-resttemplate[`RestTemplate`] -- synchronous client with template method API
* xref:integration/rest-clients.adoc#rest-http-service-client[HTTP Service Clients] -- annotated interface backed by generated proxy
@@ -402,27 +402,6 @@ To serialize only a subset of the object properties, you can specify a {baeldung
.toBodilessEntity();
----
==== URL encoded Forms
URL encoded forms, using the `"application/x-www-form-urlencoded"` media type, are useful for sending String key/values over the wire.
This is supported by the `FormHttpMessageConverter`, if the application uses a `MultiValueMap<String, String>` as source instance
or a target type.
For example:
[source,java,indent=0,subs="verbatim"]
----
MultiValueMap<String, String> form = new LinkedMultiValueMap<>();
form.add("project", "Spring Framework");
form.add("module", "spring-web");
ResponseEntity<Void> response = this.restClient.post()
.contentType(MediaType.APPLICATION_FORM_URLENCODED)
.body(form)
.retrieve()
.toBodilessEntity();
----
==== Multipart
To send multipart data, you need to provide a `MultiValueMap<String, Object>` whose values may be an `Object` for part content, a `Resource` for a file part, or an `HttpEntity` for part content with headers.
@@ -440,70 +419,18 @@ For example:
headers.setContentType(MediaType.APPLICATION_XML);
parts.add("xmlPart", new HttpEntity<>(myBean, headers));
ResponseEntity<Void> response = this.restClient.post()
.contentType(MediaType.MULTIPART_FORM_DATA)
.body(parts)
.retrieve()
.toBodilessEntity();
// send using RestClient.post or RestTemplate.postForEntity
----
In most cases, you do not have to specify the `Content-Type` for each part.
The content type is determined automatically based on the `HttpMessageConverter` chosen to serialize it or, in the case of a `Resource`, based on the file extension.
If necessary, you can explicitly provide the `MediaType` with an `HttpEntity` wrapper.
The `Content-Type` is set to `multipart/form-data` by the `MultipartHttpMessageConverter`.
As seen in the previous section, `MultiValueMap` types can also be used for URL encoded forms.
It is preferable to explicitly set the media type in the `Content-Type` or `Accept` HTTP request headers to ensure that the expected
message converter is used.
`RestClient` can also receive multipart responses.
To decode a multipart response body, use a `ParameterizedTypeReference<MultiValueMap<String, Part>>`.
The decoded map contains `Part` instances where `FormFieldPart` represents form field values
and `FilePart` represents file parts with a `filename()` and a `transferTo()` method.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim"]
----
MultiValueMap<String, Part> result = this.restClient.get()
.uri("https://example.com/upload")
.accept(MediaType.MULTIPART_FORM_DATA)
.retrieve()
.body(new ParameterizedTypeReference<>() {});
Part field = result.getFirst("fieldPart");
if (field instanceof FormFieldPart formField) {
String fieldValue = formField.value();
}
Part file = result.getFirst("filePart");
if (file instanceof FilePart filePart) {
filePart.transferTo(Path.of("/tmp/" + filePart.filename()));
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim"]
----
val result = this.restClient.get()
.uri("https://example.com/upload")
.accept(MediaType.MULTIPART_FORM_DATA)
.retrieve()
.body(object : ParameterizedTypeReference<MultiValueMap<String, Part>>() {})
val field = result?.getFirst("fieldPart")
if (field is FormFieldPart) {
val fieldValue = field.value()
}
val file = result?.getFirst("filePart")
if (file is FilePart) {
file.transferTo(Path.of("/tmp/" + file.filename()))
}
----
======
Once the `MultiValueMap` is ready, you can use it as the body of a `POST` request, using `RestClient.post().body(parts)` (or `RestTemplate.postForObject`).
If the `MultiValueMap` contains at least one non-`String` value, the `Content-Type` is set to `multipart/form-data` by the `FormHttpMessageConverter`.
If the `MultiValueMap` has `String` values, the `Content-Type` defaults to `application/x-www-form-urlencoded`.
If necessary the `Content-Type` may also be set explicitly.
[[rest-request-factories]]
=== Client Request Factories
@@ -539,7 +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
@@ -552,8 +479,7 @@ See xref:web/webflux-webclient.adoc[WebClient] for more details.
The `RestTemplate` provides a high-level API over HTTP client libraries in the form of a classic Spring Template class.
It exposes the following groups of overloaded methods:
WARNING: As of Spring Framework 7.0, `RestTemplate` is deprecated in favor of `RestClient` and will be removed in a future version,
please use the xref:integration/rest-clients.adoc#migrating-to-restclient["Migrating to RestClient"] guide.
NOTE: The xref:integration/rest-clients.adoc#rest-restclient[`RestClient`] offers a more modern API for synchronous HTTP access.
For asynchronous and streaming scenarios, consider the reactive xref:web/webflux-webclient.adoc[WebClient].
[[rest-overview-of-resttemplate-methods-tbl]]
@@ -621,26 +547,10 @@ See the xref:integration/observability.adoc#http-client.resttemplate[RestTemplat
Objects passed into and returned from `RestTemplate` methods are converted to and from HTTP messages
with the help of an `HttpMessageConverter`, see <<rest-message-conversion>>.
[[migrating-to-restclient]]
=== Migrating to `RestClient`
Applications can adopt `RestClient` in a gradual fashion, first focusing on API usage and then on infrastructure setup.
You can consider the following steps:
1. Create one or more `RestClient` from existing `RestTemplate` instances, like: `RestClient restClient = RestClient.create(restTemplate)`.
Gradually replace `RestTemplate` usage in your application, component by component, by focusing first on issuing requests.
See the table below for API equivalents.
2. Once all client requests go through `RestClient` instances, you can now work on replicating your existing
`RestTemplate` instance creations by using `RestClient.Builder`. Because `RestTemplate` and `RestClient`
share the same infrastructure, you can reuse custom `ClientHttpRequestFactory` or `ClientHttpRequestInterceptor`
in your setup. See xref:integration/rest-clients.adoc#rest-restclient[the `RestClient` builder API].
If no other library is available on the classpath, `RestClient` will choose the `JdkClientHttpRequestFactory`
powered by the modern JDK `HttpClient`, whereas `RestTemplate` would pick the `SimpleClientHttpRequestFactory` that
uses `HttpURLConnection`. This can explain subtle behavior difference at runtime at the HTTP level.
=== Migrating from `RestTemplate` to `RestClient`
The following table shows `RestClient` equivalents for `RestTemplate` methods.
It can be used to migrate from the latter to the former.
.RestClient equivalents for RestTemplate methods
[cols="1,1", options="header"]
@@ -944,11 +854,6 @@ The following table shows `RestClient` equivalents for `RestTemplate` methods.
|===
`RestClient` and `RestTemplate` instances share the same behavior when it comes to throwing exceptions
(with the `RestClientException` type being at the top of the hierarchy).
When `RestTemplate` consistently throws `HttpClientErrorException` for "4xx" response statues,
`RestClient` allows for more flexibility with custom xref:integration/rest-clients.adoc#rest-http-service-client-exceptions["status handlers"].
[[rest-http-service-client]]
== HTTP Service Clients
@@ -1252,7 +1157,7 @@ built-in decorators to suppress 404 exceptions and return a `ResponseEntity` wit
[source,java,indent=0,subs="verbatim,quotes"]
----
// For RestClient
HttpServiceProxyFactory factory = HttpServiceProxyFactory.builderFor(restClientAdapter)
HttpServiceProxyFactory factory = HttpServiceProxyFactory.builderFor(restCqlientAdapter)
.exchangeAdapterDecorator(NotFoundRestClientAdapterDecorator::new)
.build();
@@ -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`.
@@ -0,0 +1,831 @@
[[dynamic-language]]
= Dynamic Language Support
Spring provides comprehensive support for using classes and objects that have been
defined by using a dynamic language (such as Groovy) with Spring. This support lets
you write any number of classes in a supported dynamic language and have the Spring
container transparently instantiate, configure, and dependency inject the resulting
objects.
Spring's scripting support primarily targets Groovy and BeanShell. Beyond those
specifically supported languages, the JSR-223 scripting mechanism is supported
for integration with any JSR-223 capable language provider (as of Spring 4.2),
for example, JRuby.
You can find fully working examples of where this dynamic language support can be
immediately useful in xref:languages/dynamic.adoc#dynamic-language-scenarios[Scenarios].
[[dynamic-language-a-first-example]]
== A First Example
The bulk of this chapter is concerned with describing the dynamic language support in
detail. Before diving into all of the ins and outs of the dynamic language support,
we look at a quick example of a bean defined in a dynamic language. The dynamic
language for this first bean is Groovy. (The basis of this example was taken from the
Spring test suite. If you want to see equivalent examples in any of the other
supported languages, take a look at the source code).
The next example shows the `Messenger` interface, which the Groovy bean is going to
implement. Note that this interface is defined in plain Java. Dependent objects that
are injected with a reference to the `Messenger` do not know that the underlying
implementation is a Groovy script. The following listing shows the `Messenger` interface:
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting;
public interface Messenger {
String getMessage();
}
----
The following example defines a class that has a dependency on the `Messenger` interface:
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting;
public class DefaultBookingService implements BookingService {
private Messenger messenger;
public void setMessenger(Messenger messenger) {
this.messenger = messenger;
}
public void processBooking() {
// use the injected Messenger object...
}
}
----
The following example implements the `Messenger` interface in Groovy:
[source,groovy,indent=0,subs="verbatim,quotes",chomp="-packages",fold="none"]
----
package org.springframework.scripting.groovy
// Import the Messenger interface (written in Java) that is to be implemented
import org.springframework.scripting.Messenger
// Define the implementation in Groovy in file 'Messenger.groovy'
class GroovyMessenger implements Messenger {
String message
}
----
[NOTE]
====
To use the custom dynamic language tags to define dynamic-language-backed beans, you
need to have the XML Schema preamble at the top of your Spring XML configuration file.
You also need to use a Spring `ApplicationContext` implementation as your IoC
container. Using the dynamic-language-backed beans with a plain `BeanFactory`
implementation is supported, but you have to manage the plumbing of the Spring internals
to do so.
For more information on schema-based configuration, see xref:languages/dynamic.adoc#xsd-schemas-lang[XML Schema-based Configuration]
.
====
Finally, the following example shows the bean definitions that effect the injection of the
Groovy-defined `Messenger` implementation into an instance of the
`DefaultBookingService` class:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="
http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/lang https://www.springframework.org/schema/lang/spring-lang.xsd">
<!-- this is the bean definition for the Groovy-backed Messenger implementation -->
<lang:groovy id="messenger" script-source="classpath:Messenger.groovy">
<lang:property name="message" value="I Can Do The Frug" />
</lang:groovy>
<!-- an otherwise normal bean that will be injected by the Groovy-backed Messenger -->
<bean id="bookingService" class="x.y.DefaultBookingService">
<property name="messenger" ref="messenger" />
</bean>
</beans>
----
The `bookingService` bean (a `DefaultBookingService`) can now use its private `messenger`
member variable as normal, because the `Messenger` instance that was injected into it is
a `Messenger` instance. There is nothing special going on here -- just plain Java and
plain Groovy.
Hopefully, the preceding XML snippet is self-explanatory, but do not worry unduly if it is not.
Keep reading for the in-depth detail on the whys and wherefores of the preceding configuration.
[[dynamic-language-beans]]
== Defining Beans that Are Backed by Dynamic Languages
This section describes exactly how you define Spring-managed beans in any of the
supported dynamic languages.
Note that this chapter does not attempt to explain the syntax and idioms of the supported
dynamic languages. For example, if you want to use Groovy to write certain of the classes
in your application, we assume that you already know Groovy. If you need further details
about the dynamic languages themselves, see
xref:languages/dynamic.adoc#dynamic-language-resources[Further Resources] at the end of
this chapter.
[[dynamic-language-beans-concepts]]
=== Common Concepts
The steps involved in using dynamic-language-backed beans are as follows:
. Write the test for the dynamic language source code (naturally).
. Then write the dynamic language source code itself.
. Define your dynamic-language-backed beans by using the appropriate `<lang:language/>`
element in the XML configuration (you can define such beans programmatically by
using the Spring API, although you will have to consult the source code for
directions on how to do this, as this chapter does not cover this type of advanced configuration).
Note that this is an iterative step. You need at least one bean definition for each dynamic
language source file (although multiple bean definitions can reference the same source file).
The first two steps (testing and writing your dynamic language source files) are beyond
the scope of this chapter. See the language specification and reference manual
for your chosen dynamic language and crack on with developing your dynamic language
source files. You first want to read the rest of this chapter, though, as
Spring's dynamic language support does make some (small) assumptions about the contents
of your dynamic language source files.
[[dynamic-language-beans-concepts-xml-language-element]]
==== The <lang:language/> element
The final step in the list in the xref:languages/dynamic.adoc#dynamic-language-beans-concepts[preceding section]
involves defining dynamic-language-backed bean definitions, one for each bean that you
want to configure (this is no different from normal JavaBean configuration). However,
instead of specifying the fully qualified class name of the class that is to be
instantiated and configured by the container, you can use the `<lang:language/>`
element to define the dynamic language-backed bean.
Each of the supported languages has a corresponding `<lang:language/>` element:
* `<lang:groovy/>` (Groovy)
* `<lang:bsh/>` (BeanShell)
* `<lang:std/>` (JSR-223, for example, with JRuby)
The exact attributes and child elements that are available for configuration depends on
exactly which language the bean has been defined in (the language-specific sections
later in this chapter detail this).
[[dynamic-language-refreshable-beans]]
==== Refreshable Beans
One of the (and perhaps the single) most compelling value adds of the dynamic language
support in Spring is the "`refreshable bean`" feature.
A refreshable bean is a dynamic-language-backed bean. With a small amount of
configuration, a dynamic-language-backed bean can monitor changes in its underlying
source file resource and then reload itself when the dynamic language source file is
changed (for example, when you edit and save changes to the file on the file system).
This lets you deploy any number of dynamic language source files as part of an
application, configure the Spring container to create beans backed by dynamic
language source files (using the mechanisms described in this chapter), and (later,
as requirements change or some other external factor comes into play) edit a dynamic
language source file and have any change they make be reflected in the bean that is
backed by the changed dynamic language source file. There is no need to shut down a
running application (or redeploy in the case of a web application). The
dynamic-language-backed bean so amended picks up the new state and logic from the
changed dynamic language source file.
NOTE: This feature is off by default.
Now we can take a look at an example to see how easy it is to start using refreshable
beans. To turn on the refreshable beans feature, you have to specify exactly one
additional attribute on the `<lang:language/>` element of your bean definition. So,
if we stick with xref:languages/dynamic.adoc#dynamic-language-a-first-example[the example] from earlier in
this chapter, the following example shows what we would change in the Spring XML
configuration to effect refreshable beans:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<beans>
<!-- this bean is now 'refreshable' due to the presence of the 'refresh-check-delay' attribute -->
<lang:groovy id="messenger"
refresh-check-delay="5000" <!-- switches refreshing on with 5 seconds between checks -->
script-source="classpath:Messenger.groovy">
<lang:property name="message" value="I Can Do The Frug" />
</lang:groovy>
<bean id="bookingService" class="x.y.DefaultBookingService">
<property name="messenger" ref="messenger" />
</bean>
</beans>
----
That really is all you have to do. The `refresh-check-delay` attribute defined on the
`messenger` bean definition is the number of milliseconds after which the bean is
refreshed with any changes made to the underlying dynamic language source file.
You can turn off the refresh behavior by assigning a negative value to the
`refresh-check-delay` attribute. Remember that, by default, the refresh behavior is
disabled. If you do not want the refresh behavior, do not define the attribute.
If we then run the following application, we can exercise the refreshable feature.
(Please excuse the "`jumping-through-hoops-to-pause-the-execution`" shenanigans
in this next slice of code.) The `System.in.read()` call is only there so that the
execution of the program pauses while you (the developer in this scenario) go off
and edit the underlying dynamic language source file so that the refresh triggers
on the dynamic-language-backed bean when the program resumes execution.
The following listing shows this sample application:
[source,java,indent=0,subs="verbatim,quotes"]
----
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.scripting.Messenger;
public final class Boot {
public static void main(final String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
Messenger messenger = (Messenger) ctx.getBean("messenger");
System.out.println(messenger.getMessage());
// pause execution while I go off and make changes to the source file...
System.in.read();
System.out.println(messenger.getMessage());
}
}
----
Assume then, for the purposes of this example, that all calls to the `getMessage()`
method of `Messenger` implementations have to be changed such that the message is
surrounded by quotation marks. The following listing shows the changes that you
(the developer) should make to the `Messenger.groovy` source file when the
execution of the program is paused:
[source,groovy,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting
class GroovyMessenger implements Messenger {
private String message = "Bingo"
public String getMessage() {
// change the implementation to surround the message in quotes
return "'" + this.message + "'"
}
public void setMessage(String message) {
this.message = message
}
}
----
When the program runs, the output before the input pause will be `I Can Do The Frug`.
After the change to the source file is made and saved and the program resumes execution,
the result of calling the `getMessage()` method on the dynamic-language-backed
`Messenger` implementation is `'I Can Do The Frug'` (notice the inclusion of the
additional quotation marks).
Changes to a script do not trigger a refresh if the changes occur within the window of
the `refresh-check-delay` value. Changes to the script are not actually picked up until
a method is called on the dynamic-language-backed bean. It is only when a method is
called on a dynamic-language-backed bean that it checks to see if its underlying script
source has changed. Any exceptions that relate to refreshing the script (such as
encountering a compilation error or finding that the script file has been deleted)
results in a fatal exception being propagated to the calling code.
The refreshable bean behavior described earlier does not apply to dynamic language
source files defined with the `<lang:inline-script/>` element notation (see
xref:languages/dynamic.adoc#dynamic-language-beans-inline[Inline Dynamic Language Source Files]).
Additionally, it applies only to beans where changes to the underlying source file can
actually be detected (for example, by code that checks the last modified date of a
dynamic language source file that exists on the file system).
[[dynamic-language-beans-inline]]
==== Inline Dynamic Language Source Files
The dynamic language support can also cater to dynamic language source files that are
embedded directly in Spring bean definitions. More specifically, the
`<lang:inline-script/>` element lets you define dynamic language source immediately
inside a Spring configuration file. An example might clarify how the inline script
feature works:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<lang:groovy id="messenger">
<lang:inline-script>
package org.springframework.scripting.groovy
import org.springframework.scripting.Messenger
class GroovyMessenger implements Messenger {
String message
}
</lang:inline-script>
<lang:property name="message" value="I Can Do The Frug" />
</lang:groovy>
----
If we put to one side the issues surrounding whether it is good practice to define
dynamic language source inside a Spring configuration file, the `<lang:inline-script/>`
element can be useful in some scenarios. For instance, we might want to quickly add a
Spring `Validator` implementation to a Spring MVC `Controller`. This is but a moment's
work using inline source. (See
xref:languages/dynamic.adoc#dynamic-language-scenarios-validators[Scripted Validators]
for such an example.)
[[dynamic-language-beans-ctor-injection]]
==== Understanding Constructor Injection in the Context of Dynamic-language-backed Beans
There is one very important thing to be aware of with regard to Spring's dynamic
language support. Namely, you can not (currently) supply constructor arguments
to dynamic-language-backed beans (and, hence, constructor-injection is not available for
dynamic-language-backed beans). In the interests of making this special handling of
constructors and properties 100% clear, the following mixture of code and configuration
does not work:
.An approach that cannot work
[source,groovy,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting.groovy
import org.springframework.scripting.Messenger
// from the file 'Messenger.groovy'
class GroovyMessenger implements Messenger {
GroovyMessenger() {}
// this constructor is not available for Constructor Injection
GroovyMessenger(String message) {
this.message = message;
}
String message
String anotherMessage
}
----
[source,xml,indent=0,subs="verbatim,quotes"]
----
<lang:groovy id="badMessenger"
script-source="classpath:Messenger.groovy">
<!-- this next constructor argument will not be injected into the GroovyMessenger -->
<!-- in fact, this isn't even allowed according to the schema -->
<constructor-arg value="This will not work" />
<!-- only property values are injected into the dynamic-language-backed object -->
<lang:property name="anotherMessage" value="Passed straight through to the dynamic-language-backed object" />
</lang>
----
In practice this limitation is not as significant as it first appears, since setter
injection is the injection style favored by the overwhelming majority of developers
(we leave the discussion as to whether that is a good thing to another day).
[[dynamic-language-beans-groovy]]
=== Groovy Beans
This section describes how to use beans defined in Groovy in Spring.
The Groovy homepage includes the following description:
"`Groovy is an agile dynamic language for the Java 2 Platform that has many of the
features that people like so much in languages like Python, Ruby and Smalltalk, making
them available to Java developers using a Java-like syntax.`"
If you have read this chapter straight from the top, you have already
xref:languages/dynamic.adoc#dynamic-language-a-first-example[seen an example] of a Groovy-dynamic-language-backed
bean. Now consider another example (again using an example from the Spring test suite):
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting;
public interface Calculator {
int add(int x, int y);
}
----
The following example implements the `Calculator` interface in Groovy:
[source,groovy,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting.groovy
// from the file 'calculator.groovy'
class GroovyCalculator implements Calculator {
int add(int x, int y) {
x + y
}
}
----
The following bean definition uses the calculator defined in Groovy:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<!-- from the file 'beans.xml' -->
<beans>
<lang:groovy id="calculator" script-source="classpath:calculator.groovy"/>
</beans>
----
Finally, the following small application exercises the preceding configuration:
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
Calculator calc = ctx.getBean("calculator", Calculator.class);
System.out.println(calc.add(2, 8));
}
}
----
The resulting output from running the above program is (unsurprisingly) `10`.
(For more interesting examples, see the dynamic language showcase project for a more
complex example or see the examples xref:languages/dynamic.adoc#dynamic-language-scenarios[Scenarios] later in this chapter).
You must not define more than one class per Groovy source file. While this is perfectly
legal in Groovy, it is (arguably) a bad practice. In the interests of a consistent
approach, you should (in the opinion of the Spring team) respect the standard Java
conventions of one (public) class per source file.
[[dynamic-language-beans-groovy-customizer]]
==== Customizing Groovy Objects by Using a Callback
The `GroovyObjectCustomizer` interface is a callback that lets you hook additional
creation logic into the process of creating a Groovy-backed bean. For example,
implementations of this interface could invoke any required initialization methods,
set some default property values, or specify a custom `MetaClass`. The following listing
shows the `GroovyObjectCustomizer` interface definition:
[source,java,indent=0,subs="verbatim,quotes"]
----
public interface GroovyObjectCustomizer {
void customize(GroovyObject goo);
}
----
The Spring Framework instantiates an instance of your Groovy-backed bean and then
passes the created `GroovyObject` to the specified `GroovyObjectCustomizer` (if one
has been defined). You can do whatever you like with the supplied `GroovyObject`
reference. We expect that most people want to set a custom `MetaClass` with this
callback, and the following example shows how to do so:
[source,java,indent=0,subs="verbatim,quotes"]
----
public final class SimpleMethodTracingCustomizer implements GroovyObjectCustomizer {
public void customize(GroovyObject goo) {
DelegatingMetaClass metaClass = new DelegatingMetaClass(goo.getMetaClass()) {
public Object invokeMethod(Object object, String methodName, Object[] arguments) {
System.out.println("Invoking '" + methodName + "'.");
return super.invokeMethod(object, methodName, arguments);
}
};
metaClass.initialize();
goo.setMetaClass(metaClass);
}
}
----
A full discussion of meta-programming in Groovy is beyond the scope of the Spring
reference manual. See the relevant section of the Groovy reference manual or do a
search online. Plenty of articles address this topic. Actually, making use of a
`GroovyObjectCustomizer` is easy if you use the Spring namespace support, as the
following example shows:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<!-- define the GroovyObjectCustomizer just like any other bean -->
<bean id="tracingCustomizer" class="example.SimpleMethodTracingCustomizer"/>
<!-- ... and plug it into the desired Groovy bean via the 'customizer-ref' attribute -->
<lang:groovy id="calculator"
script-source="classpath:org/springframework/scripting/groovy/Calculator.groovy"
customizer-ref="tracingCustomizer"/>
----
If you do not use the Spring namespace support, you can still use the
`GroovyObjectCustomizer` functionality, as the following example shows:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<bean id="calculator" class="org.springframework.scripting.groovy.GroovyScriptFactory">
<constructor-arg value="classpath:org/springframework/scripting/groovy/Calculator.groovy"/>
<!-- define the GroovyObjectCustomizer (as an inner bean) -->
<constructor-arg>
<bean id="tracingCustomizer" class="example.SimpleMethodTracingCustomizer"/>
</constructor-arg>
</bean>
<bean class="org.springframework.scripting.support.ScriptFactoryPostProcessor"/>
----
NOTE: You may also specify a Groovy `CompilationCustomizer` (such as an `ImportCustomizer`)
or even a full Groovy `CompilerConfiguration` object in the same place as Spring's
`GroovyObjectCustomizer`. Furthermore, you may set a common `GroovyClassLoader` with custom
configuration for your beans at the `ConfigurableApplicationContext.setClassLoader` level;
this also leads to shared `GroovyClassLoader` usage and is therefore recommendable in case of
a large number of scripted beans (avoiding an isolated `GroovyClassLoader` instance per bean).
[[dynamic-language-beans-bsh]]
=== BeanShell Beans
This section describes how to use BeanShell beans in Spring.
The https://beanshell.github.io/intro.html[BeanShell homepage] includes the following
description:
----
BeanShell is a small, free, embeddable Java source interpreter with dynamic language
features, written in Java. BeanShell dynamically runs standard Java syntax and
extends it with common scripting conveniences such as loose types, commands, and method
closures like those in Perl and JavaScript.
----
In contrast to Groovy, BeanShell-backed bean definitions require some (small) additional
configuration. The implementation of the BeanShell dynamic language support in Spring is
interesting, because Spring creates a JDK dynamic proxy that implements all of the
interfaces that are specified in the `script-interfaces` attribute value of the
`<lang:bsh>` element (this is why you must supply at least one interface in the value
of the attribute, and, consequently, program to interfaces when you use BeanShell-backed
beans). This means that every method call on a BeanShell-backed object goes through the
JDK dynamic proxy invocation mechanism.
Now we can show a fully working example of using a BeanShell-based bean that implements
the `Messenger` interface that was defined earlier in this chapter. We again show the
definition of the `Messenger` interface:
[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.scripting;
public interface Messenger {
String getMessage();
}
----
The following example shows the BeanShell "`implementation`" (we use the term loosely here)
of the `Messenger` interface:
[source,java,indent=0,subs="verbatim,quotes"]
----
String message;
String getMessage() {
return message;
}
void setMessage(String aMessage) {
message = aMessage;
}
----
The following example shows the Spring XML that defines an "`instance`" of the above
"`class`" (again, we use these terms very loosely here):
[source,xml,indent=0,subs="verbatim,quotes"]
----
<lang:bsh id="messageService" script-source="classpath:BshMessenger.bsh"
script-interfaces="org.springframework.scripting.Messenger">
<lang:property name="message" value="Hello World!" />
</lang:bsh>
----
See xref:languages/dynamic.adoc#dynamic-language-scenarios[Scenarios] for some scenarios
where you might want to use BeanShell-based beans.
[[dynamic-language-scenarios]]
== Scenarios
The possible scenarios where defining Spring managed beans in a scripting language would
be beneficial are many and varied. This section describes two possible use cases for the
dynamic language support in Spring.
[[dynamic-language-scenarios-controllers]]
=== Scripted Spring MVC Controllers
One group of classes that can benefit from using dynamic-language-backed beans is that
of Spring MVC controllers. In pure Spring MVC applications, the navigational flow
through a web application is, to a large extent, determined by code encapsulated within
your Spring MVC controllers. As the navigational flow and other presentation layer logic
of a web application needs to be updated to respond to support issues or changing
business requirements, it may well be easier to effect any such required changes by
editing one or more dynamic language source files and seeing those changes being
immediately reflected in the state of a running application.
Remember that, in the lightweight architectural model espoused by projects such as
Spring, you typically aim to have a really thin presentation layer, with all
the meaty business logic of an application being contained in the domain and service
layer classes. Developing Spring MVC controllers as dynamic-language-backed beans lets
you change presentation layer logic by editing and saving text files. Any
changes to such dynamic language source files is (depending on the configuration)
automatically reflected in the beans that are backed by dynamic language source files.
NOTE: To effect this automatic "`pickup`" of any changes to dynamic-language-backed
beans, you have to enable the "`refreshable beans`" functionality. See
xref:languages/dynamic.adoc#dynamic-language-refreshable-beans[Refreshable Beans] for a full treatment of this feature.
The following example shows an `org.springframework.web.servlet.mvc.Controller` implemented
by using the Groovy dynamic language:
[source,groovy,indent=0,subs="verbatim,quotes",chomp="-packages"]
----
package org.springframework.showcase.fortune.web
import org.springframework.showcase.fortune.service.FortuneService
import org.springframework.showcase.fortune.domain.Fortune
import org.springframework.web.servlet.ModelAndView
import org.springframework.web.servlet.mvc.Controller
import jakarta.servlet.http.HttpServletRequest
import jakarta.servlet.http.HttpServletResponse
// from the file '/WEB-INF/groovy/FortuneController.groovy'
class FortuneController implements Controller {
@Property FortuneService fortuneService
ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse httpServletResponse) {
return new ModelAndView("tell", "fortune", this.fortuneService.tellFortune())
}
}
----
[source,xml,indent=0,subs="verbatim,quotes"]
----
<lang:groovy id="fortune"
refresh-check-delay="3000"
script-source="/WEB-INF/groovy/FortuneController.groovy">
<lang:property name="fortuneService" ref="fortuneService"/>
</lang:groovy>
----
[[dynamic-language-scenarios-validators]]
=== Scripted Validators
Another area of application development with Spring that may benefit from the
flexibility afforded by dynamic-language-backed beans is that of validation. It can
be easier to express complex validation logic by using a loosely typed dynamic language
(that may also have support for inline regular expressions) as opposed to regular Java.
Again, developing validators as dynamic-language-backed beans lets you change
validation logic by editing and saving a simple text file. Any such changes is
(depending on the configuration) automatically reflected in the execution of a
running application and would not require the restart of an application.
NOTE: To effect the automatic "`pickup`" of any changes to dynamic-language-backed
beans, you have to enable the 'refreshable beans' feature. See
xref:languages/dynamic.adoc#dynamic-language-refreshable-beans[Refreshable Beans]
for a full and detailed treatment of this feature.
The following example shows a Spring `org.springframework.validation.Validator`
implemented by using the Groovy dynamic language (see
xref:core/validation/validator.adoc[Validation using Springs Validator interface]
for a discussion of the `Validator` interface):
[source,groovy,indent=0,subs="verbatim,quotes"]
----
import org.springframework.validation.Validator
import org.springframework.validation.Errors
import org.springframework.beans.TestBean
class TestBeanValidator implements Validator {
boolean supports(Class clazz) {
return TestBean.class.isAssignableFrom(clazz)
}
void validate(Object bean, Errors errors) {
if(bean.name?.trim()?.size() > 0) {
return
}
errors.reject("whitespace", "Cannot be composed wholly of whitespace.")
}
}
----
[[dynamic-language-final-notes]]
== Additional Details
This last section contains some additional details related to the dynamic language support.
[[dynamic-language-final-notes-aop]]
=== AOP -- Advising Scripted Beans
You can use the Spring AOP framework to advise scripted beans. The Spring AOP
framework actually is unaware that a bean that is being advised might be a scripted
bean, so all of the AOP use cases and functionality that you use (or aim to use)
work with scripted beans. When you advise scripted beans, you cannot use class-based
proxies. You must use xref:core/aop/proxying.adoc[interface-based proxies].
You are not limited to advising scripted beans. You can also write aspects themselves
in a supported dynamic language and use such beans to advise other Spring beans.
This really would be an advanced use of the dynamic language support though.
[[dynamic-language-final-notes-scopes]]
=== Scoping
In case it is not immediately obvious, scripted beans can be scoped in the same way as
any other bean. The `scope` attribute on the various `<lang:language/>` elements lets
you control the scope of the underlying scripted bean, as it does with a regular
bean. (The default scope is xref:core/beans/factory-scopes.adoc#beans-factory-scopes-singleton[singleton],
as it is with "`regular`" beans.)
The following example uses the `scope` attribute to define a Groovy bean scoped as
a xref:core/beans/factory-scopes.adoc#beans-factory-scopes-prototype[prototype]:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="
http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/lang https://www.springframework.org/schema/lang/spring-lang.xsd">
<lang:groovy id="messenger" script-source="classpath:Messenger.groovy" scope="prototype">
<lang:property name="message" value="I Can Do The RoboCop" />
</lang:groovy>
<bean id="bookingService" class="x.y.DefaultBookingService">
<property name="messenger" ref="messenger" />
</bean>
</beans>
----
See xref:core/beans/factory-scopes.adoc[Bean Scopes] in
xref:web/webmvc-view/mvc-xslt.adoc#mvc-view-xslt-beandefs[The IoC Container]
for a full discussion of the scoping support in the Spring Framework.
[[xsd-schemas-lang]]
=== The `lang` XML schema
The `lang` elements in Spring XML configuration deal with exposing objects that have been
written in a dynamic language (such as Groovy or BeanShell) as beans in the Spring container.
These elements (and the dynamic language support) are comprehensively covered in
xref:languages/dynamic.adoc[Dynamic Language Support]. See that section
for full details on this support and the `lang` elements.
To use the elements in the `lang` schema, you need to have the following preamble at the
top of your Spring XML configuration file. The text in the following snippet references
the correct schema so that the tags in the `lang` namespace are available to you:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="
http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/lang https://www.springframework.org/schema/lang/spring-lang.xsd">
<!-- bean definitions here -->
</beans>
----
[[dynamic-language-resources]]
== Further Resources
The following links go to further resources about the various dynamic languages referenced
in this chapter:
* The https://www.groovy-lang.org/[Groovy] homepage
* The https://beanshell.github.io/intro.html[BeanShell] homepage
* The https://www.jruby.org[JRuby] homepage
@@ -6,37 +6,9 @@ Groovy is a powerful, optionally typed, and dynamic language, with static-typing
compilation capabilities. It offers a concise syntax and integrates smoothly with any
existing Java application.
[[beans-factory-groovy]]
== The Groovy Bean Definition DSL
The Spring Framework provides a dedicated `ApplicationContext` that supports a Groovy-based
Bean Definition DSL, as known from the Grails framework.
Typically, such configuration live in a ".groovy" file with the structure shown in the
following example:
[source,groovy,indent=0,subs="verbatim,quotes"]
----
beans {
dataSource(BasicDataSource) {
driverClassName = "org.hsqldb.jdbcDriver"
url = "jdbc:hsqldb:mem:grailsDB"
username = "sa"
password = ""
settings = [mynew:"setting"]
}
sessionFactory(SessionFactory) {
dataSource = dataSource
}
myService(MyService) {
nestedBean = { AnotherBean bean ->
dataSource = dataSource
}
}
}
----
This configuration style is largely equivalent to XML bean definitions and even
supports Spring's XML configuration namespaces. It also allows for importing XML
bean definition files through an `importBeans` directive.
Bean Definition DSL. For more details, see
xref:core/beans/basics.adoc#beans-factory-groovy[The Groovy Bean Definition DSL].
Further support for Groovy, including beans written in Groovy, refreshable script beans,
and more is available in xref:languages/dynamic.adoc[Dynamic Language Support].
@@ -1,4 +1,4 @@
[[kotlin-bean-registration-dsl]]
= Bean Registration DSL
[[kotlin-bean-definition-dsl]]
= Bean Definition DSL
See xref:core/beans/java/programmatic-bean-registration.adoc[Programmatic Bean Registration].
@@ -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 { }`]
@@ -264,11 +264,9 @@ The {spring-framework-api-kdoc}/spring-core/org.springframework.core/-propagatio
{micrometer-context-propagation-docs}/[Micrometer Context Propagation library] works with Kotlin Coroutines.
It requires the `io.micrometer:context-propagation` dependency and optionally the
`org.jetbrains.kotlinx:kotlinx-coroutines-reactor` one. Automatic context propagation via
`CoroutinesUtils#invokeSuspendingFunction` (used by Spring to adapt Coroutines to Reactor `Flux` or `Mono`) can be
enabled by invoking `Hooks.enableAutomaticContextPropagation()`.
`org.jetbrains.kotlinx:kotlinx-coroutines-reactor` one.
Applications can also use `PropagationContextElement` explicitly to augment the `CoroutineContext`
Applications can then use the `PropagationContextElement` to augment the `CoroutineContext`
with the context propagation mechanism:
include-code::./ContextPropagationSample[tag=context,indent=0]
@@ -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()
}
@@ -3,9 +3,8 @@
The following annotations are supported when used in conjunction with the
xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-extension[`SpringExtension`]
and the JUnit Jupiter testing framework:
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`]
@@ -15,56 +14,6 @@ and the JUnit Jupiter testing framework:
* 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)`.
Alternatively, you can change the global default by setting the
`spring.test.extension.context.scope` property to `test_class`. The property is resolved
first via the xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism
which also supports JVM system properties — for example,
`-Dspring.test.extension.context.scope=test_class`. If the Spring property has not been
set, the `SpringExtension` will attempt to resolve the property as a
https://docs.junit.org/current/running-tests/configuration-parameters.html[JUnit Platform configuration parameter]
as a fallback mechanism. If the property has not been set via either of those mechanisms,
the `SpringExtension` will use a test-method scoped extension context by default. Note,
however, that a `@SpringExtensionConfig` declaration always takes precedence over this
property.
[TIP]
====
If a test class uses JUnit Jupiter's `@TestInstance(Lifecycle.PER_CLASS)` semantics, the
`SpringExtension` will always use a test-class scoped `ExtensionContext`, and
configuration via `@SpringExtensionConfig(useTestClassScopedExtensionContext = true)` or
the `spring.test.extension.context.scope` property will have no effect for that test
class.
====
[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.
In addition,
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`
@@ -238,7 +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 { }
@@ -72,13 +72,6 @@ bean definition profiles programmatically by implementing a custom
xref:testing/testcontext-framework/ctx-management/env-profiles.adoc#testcontext-ctx-management-env-profiles-ActiveProfilesResolver[`ActiveProfilesResolver`]
and registering it by using the `resolver` attribute of `@ActiveProfiles`.
NOTE: When `@ActiveProfiles` is declared on a test class, the `spring.profiles.active`
property (whether configured as a JVM system property or environment variable) is not
taken into account by the TestContext Framework when determining active profiles. If
you need to allow `spring.profiles.active` to override the profiles configured via
`@ActiveProfiles`, you can implement a custom `ActiveProfilesResolver` as described in
xref:testing/testcontext-framework/ctx-management/env-profiles.adoc[Context Configuration with Environment Profiles].
See xref:testing/testcontext-framework/ctx-management/env-profiles.adoc[Context Configuration with Environment Profiles],
xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-nested-test-configuration[`@Nested` test class configuration], and the
{spring-framework-api}/test/context/ActiveProfiles.html[`@ActiveProfiles`] javadoc for
@@ -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:
@@ -12,20 +12,18 @@ The annotations can be applied in the following ways.
* On a non-static field in a test class or any of its superclasses.
* On a non-static field in an enclosing class for a `@Nested` test class or in any class
in the type hierarchy or enclosing class hierarchy above the `@Nested` test class.
* On a parameter in the constructor for a test class.
* At the type level on a test class or any superclass or implemented interface in the
type hierarchy above the test class.
* At the type level on an enclosing class for a `@Nested` test class or on any class or
interface in the type hierarchy or enclosing class hierarchy above the `@Nested` test
class.
When `@MockitoBean` or `@MockitoSpyBean` is declared on a field or constructor parameter,
the bean to mock or spy is inferred from the type of the annotated field or parameter. If
multiple candidates exist in the `ApplicationContext`, a `@Qualifier` annotation can be
declared on the field or parameter to help disambiguate. In the absence of a `@Qualifier`
annotation, the name of the annotated field or parameter will be used as a _fallback
qualifier_. Alternatively, you can explicitly specify a bean name to mock or spy by
setting the `value` or `name` attribute in the annotation.
When `@MockitoBean` or `@MockitoSpyBean` is declared on a field, the bean to mock or spy
is inferred from the type of the annotated field. If multiple candidates exist in the
`ApplicationContext`, a `@Qualifier` annotation can be declared on the field to help
disambiguate. In the absence of a `@Qualifier` annotation, the name of the annotated
field will be used as a _fallback qualifier_. Alternatively, you can explicitly specify a
bean name to mock or spy by setting the `value` or `name` attribute in the annotation.
When `@MockitoBean` or `@MockitoSpyBean` is declared at the type level, the type of bean
(or beans) to mock or spy must be supplied via the `types` attribute in the annotation
@@ -104,10 +102,6 @@ will be replaced with a singleton mock of the type of object created by the `Fac
Similarly, when using `@MockitoSpyBean` to create a spy for a `FactoryBean`, a spy will
be created for the object created by the `FactoryBean`, not for the `FactoryBean` itself.
Furthermore, `@MockitoSpyBean` cannot be used to spy on a scoped proxy — for example, a
bean annotated with `@Scope(proxyMode = ScopedProxyMode.TARGET_CLASS)`. Any attempt to do
so will fail with an exception.
====
[NOTE]
@@ -142,21 +136,6 @@ Java::
}
----
<1> Replace the bean with type `CustomService` with a Mockito mock.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests {
@MockitoBean // <1>
lateinit var customService: CustomService
// tests...
}
----
<1> Replace the bean with type `CustomService` with a Mockito mock.
======
In the example above, we are creating a mock for `CustomService`. If more than one bean
@@ -185,98 +164,6 @@ Java::
}
----
<1> Replace the bean named `service` with a Mockito mock.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests {
@MockitoBean("service") // <1>
lateinit var customService: CustomService
// tests...
}
----
<1> Replace the bean named `service` with a Mockito mock.
======
The following example shows how to use `@MockitoBean` on a constructor parameter for a
by-type lookup.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig.class)
class BeanOverrideTests {
private final CustomService customService;
BeanOverrideTests(@MockitoBean CustomService customService) { // <1>
this.customService = customService;
}
// tests...
}
----
<1> Replace the bean with type `CustomService` with a Mockito mock and inject it into
the constructor.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests(@MockitoBean val customService: CustomService) { // <1>
// tests...
}
----
<1> Replace the bean with type `CustomService` with a Mockito mock and inject it into
the constructor.
======
The following example shows how to use `@MockitoBean` on a constructor parameter for a
by-name lookup.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig.class)
class BeanOverrideTests {
private final CustomService customService;
BeanOverrideTests(@MockitoBean("service") CustomService customService) { // <1>
this.customService = customService;
}
// tests...
}
----
<1> Replace the bean named `service` with a Mockito mock and inject it into the
constructor.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests(@MockitoBean("service") val customService: CustomService) { // <1>
// tests...
}
----
<1> Replace the bean named `service` with a Mockito mock and inject it into the
constructor.
======
The following `@SharedMocks` annotation registers two mocks by-type and one mock by-name.
@@ -296,19 +183,6 @@ Java::
----
<1> Register `OrderService` and `UserService` mocks by-type.
<2> Register `PrintingService` mock by-name.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.RUNTIME)
@MockitoBean(types = [OrderService::class, UserService::class]) // <1>
@MockitoBean(name = "ps1", types = [PrintingService::class]) // <2>
annotation class SharedMocks
----
<1> Register `OrderService` and `UserService` mocks by-type.
<2> Register `PrintingService` mock by-name.
======
The following demonstrates how `@SharedMocks` can be used on a test class.
@@ -339,34 +213,6 @@ Java::
----
<1> Register common mocks via the custom `@SharedMocks` annotation.
<2> Optionally inject mocks to _stub_ or _verify_ them.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
@SharedMocks // <1>
class BeanOverrideTests {
@Autowired
lateinit var orderService: OrderService // <2>
@Autowired
lateinit var userService: UserService // <2>
@Autowired
lateinit var ps1: PrintingService // <2>
// Inject other components that rely on the mocks.
@Test
fun testThatDependsOnMocks() {
// ...
}
}
----
<1> Register common mocks via the custom `@SharedMocks` annotation.
<2> Optionally inject mocks to _stub_ or _verify_ them.
======
TIP: The mocks can also be injected into `@Configuration` classes or other test-related
@@ -396,21 +242,6 @@ Java::
}
----
<1> Wrap the bean with type `CustomService` with a Mockito spy.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests {
@MockitoSpyBean // <1>
lateinit var customService: CustomService
// tests...
}
----
<1> Wrap the bean with type `CustomService` with a Mockito spy.
======
In the example above, we are wrapping the bean with type `CustomService`. If more than
@@ -436,95 +267,6 @@ Java::
}
----
<1> Wrap the bean named `service` with a Mockito spy.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests {
@MockitoSpyBean("service") // <1>
lateinit var customService: CustomService
// tests...
}
----
<1> Wrap the bean named `service` with a Mockito spy.
======
The following example shows how to use `@MockitoSpyBean` on a constructor parameter for
a by-type lookup.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig.class)
class BeanOverrideTests {
private final CustomService customService;
BeanOverrideTests(@MockitoSpyBean CustomService customService) { // <1>
this.customService = customService;
}
// tests...
}
----
<1> Wrap the bean with type `CustomService` with a Mockito spy and inject it into the
constructor.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests(@MockitoSpyBean val customService: CustomService) { // <1>
// tests...
}
----
<1> Wrap the bean with type `CustomService` with a Mockito spy and inject it into the
constructor.
======
The following example shows how to use `@MockitoSpyBean` on a constructor parameter for
a by-name lookup.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig.class)
class BeanOverrideTests {
private final CustomService customService;
BeanOverrideTests(@MockitoSpyBean("service") CustomService customService) { // <1>
this.customService = customService;
}
// tests...
}
----
<1> Wrap the bean named `service` with a Mockito spy and inject it into the constructor.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
class BeanOverrideTests(@MockitoSpyBean("service") val customService: CustomService) { // <1>
// tests...
}
----
<1> Wrap the bean named `service` with a Mockito spy and inject it into the constructor.
======
The following `@SharedSpies` annotation registers two spies by-type and one spy by-name.
@@ -544,19 +286,6 @@ Java::
----
<1> Register `OrderService` and `UserService` spies by-type.
<2> Register `PrintingService` spy by-name.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.RUNTIME)
@MockitoSpyBean(types = [OrderService::class, UserService::class]) // <1>
@MockitoSpyBean(name = "ps1", types = [PrintingService::class]) // <2>
annotation class SharedSpies
----
<1> Register `OrderService` and `UserService` spies by-type.
<2> Register `PrintingService` spy by-name.
======
The following demonstrates how `@SharedSpies` can be used on a test class.
@@ -587,34 +316,6 @@ Java::
----
<1> Register common spies via the custom `@SharedSpies` annotation.
<2> Optionally inject spies to _stub_ or _verify_ them.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
@SpringJUnitConfig(TestConfig::class)
@SharedSpies // <1>
class BeanOverrideTests {
@Autowired
lateinit var orderService: OrderService // <2>
@Autowired
lateinit var userService: UserService // <2>
@Autowired
lateinit var ps1: PrintingService // <2>
// Inject other components that rely on the spies.
@Test
fun testThatDependsOnMocks() {
// ...
}
}
----
<1> Register common spies via the custom `@SharedSpies` annotation.
<2> Optionally inject spies to _stub_ or _verify_ them.
======
TIP: The spies can also be injected into `@Configuration` classes or other test-related
@@ -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:
@@ -73,27 +73,6 @@ Java::
----
<1> Mark a field for overriding the bean with type `CustomService`.
<2> The result of this static method will be used as the instance and injected into the field.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
class OverrideBeanTests {
@TestBean // <1>
lateinit var customService: CustomService
// test case body...
companion object {
@JvmStatic
fun customService(): CustomService { // <2>
return MyFakeCustomService()
}
}
}
----
<1> Mark a field for overriding the bean with type `CustomService`.
<2> The result of this static method will be used as the instance and injected into the field.
======
In the example above, we are overriding the bean with type `CustomService`. If more than
@@ -123,28 +102,6 @@ Java::
<1> Mark a field for overriding the bean with name `service`, and specify that the
factory method is named `createCustomService`.
<2> The result of this static method will be used as the instance and injected into the field.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes"]
----
class OverrideBeanTests {
@TestBean(name = "service", methodName = "createCustomService") // <1>
lateinit var customService: CustomService
// test case body...
companion object {
@JvmStatic
fun createCustomService(): CustomService { // <2>
return MyFakeCustomService()
}
}
}
----
<1> Mark a field for overriding the bean with name `service`, and specify that the
factory method is named `createCustomService`.
<2> The result of this static method will be used as the instance and injected into the field.
======
[TIP]
@@ -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
----
======
@@ -3,7 +3,7 @@
In the previous sections, we have seen how to use MockMvc in conjunction with the raw
HtmlUnit APIs. In this section, we use additional abstractions within the Selenium
https://www.selenium.dev/documentation/webdriver/[WebDriver] to make things even easier.
https://docs.seleniumhq.org/projects/webdriver/[WebDriver] to make things even easier.
[[mockmvc-server-htmlunit-webdriver-why]]
== Why WebDriver and MockMvc?
@@ -12,8 +12,8 @@ We can already use HtmlUnit and MockMvc, so why would we want to use WebDriver?
Selenium WebDriver provides a very elegant API that lets us easily organize our code. To
better show how it works, we explore an example in this section.
NOTE: Despite being a part of https://www.selenium.dev/documentation/[Selenium],
WebDriver does not require a Selenium Server to run your tests.
NOTE: Despite being a part of https://docs.seleniumhq.org/[Selenium], WebDriver does not
require a Selenium Server to run your tests.
Suppose we need to ensure that a message is created properly. The tests involve finding
the HTML form input elements, filling them out, and making various assertions.
@@ -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:
--
@@ -308,7 +307,7 @@ interested. These are of type `WebElement`. WebDriver's
https://github.com/SeleniumHQ/selenium/wiki/PageFactory[`PageFactory`] lets us remove a
lot of code from the HtmlUnit version of `CreateMessagePage` by automatically resolving
each `WebElement`. The
https://www.selenium.dev/selenium/docs/api/java/org/openqa/selenium/support/PageFactory.html#initElements-org.openqa.selenium.WebDriver-java.lang.Class-[`PageFactory#initElements(WebDriver,Class<T>)`]
https://seleniumhq.github.io/selenium/docs/api/java/org/openqa/selenium/support/PageFactory.html#initElements-org.openqa.selenium.WebDriver-java.lang.Class-[`PageFactory#initElements(WebDriver,Class<T>)`]
method automatically resolves each `WebElement` by using the field name and looking it up
by the `id` or `name` of the element within the HTML page.
<3> We can use the
@@ -352,7 +351,7 @@ interested. These are of type `WebElement`. WebDriver's
https://github.com/SeleniumHQ/selenium/wiki/PageFactory[`PageFactory`] lets us remove a
lot of code from the HtmlUnit version of `CreateMessagePage` by automatically resolving
each `WebElement`. The
https://www.selenium.dev/selenium/docs/api/java/org/openqa/selenium/support/PageFactory.html#initElements-org.openqa.selenium.WebDriver-java.lang.Class-[`PageFactory#initElements(WebDriver,Class<T>)`]
https://seleniumhq.github.io/selenium/docs/api/java/org/openqa/selenium/support/PageFactory.html#initElements-org.openqa.selenium.WebDriver-java.lang.Class-[`PageFactory#initElements(WebDriver,Class<T>)`]
method automatically resolves each `WebElement` by using the field name and looking it up
by the `id` or `name` of the element within the HTML page.
<3> We can use the
@@ -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
@@ -132,37 +170,75 @@ Kotlin::
[[resttestclient.tests]]
[[resttestclient-tests]]
== Writing Tests
xref:integration/rest-clients.adoc#rest-restclient[`RestClient`] and `RestTestClient` have
the same API up to the point of the call to `exchange()`. After that, `RestTestClient`
provides two alternative ways to verify the response:
`RestTestClient` provides an API identical to xref:integration/rest-clients.adoc#rest-restclient[`RestClient`]
up to the point of performing a request by using `exchange()`.
1. xref:resttestclient-workflow[Built-in Assertions] extend the request workflow with a chain of expectations
2. xref:resttestclient-assertj[AssertJ Integration] to verify the response via `assertThat()` statements
After the call to `exchange()`, `RestTestClient` diverges from `RestClient`, and
instead continues with a workflow to verify responses.
TIP: See the xref:integration/rest-clients.adoc#rest-message-conversion[HTTP Message Conversion]
section for examples on how to prepare a request with any content, including form data and multipart data.
To assert the response status and headers, use the following:
[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);
----
[[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]
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:
@@ -173,70 +249,186 @@ 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]]
==== 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]]
==== JSON Content
[[resttestclient-json]]
=== JSON Content
You can use `expectBody()` without a target type to perform assertions on the raw
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.multipart]]
==== Multipart Content
When testing endpoints that return multipart responses, you can decode the body to a
`MultiValueMap<String, Part>` and assert individual parts using the `FormFieldPart`
and `FilePart` subtypes.
include-code::./MultipartTests[tag=multipart,indent=0]
[[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]
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]
@@ -43,16 +43,6 @@ alternative, you can set the same property via the
xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism.
====
[TIP]
====
JPA's `@PersistenceContext` and `@PersistenceUnit` annotations cannot be used to perform
dependency injection within test classes in AOT mode.
However, as of Spring Framework 7.0, you can inject an `EntityManager` or
`EntityManagerFactory` into tests using `@Autowired` instead of `@PersistenceContext` and
`@PersistenceUnit`, respectively.
====
[NOTE]
====
The `@ContextHierarchy` annotation is not supported in AOT mode.
@@ -2,9 +2,8 @@
= Bean Overriding in Tests
Bean overriding in tests refers to the ability to override specific beans in the
`ApplicationContext` for a test class, by annotating the test class, one or more
non-static fields in the test class, or one or more parameters in the constructor for the
test class.
`ApplicationContext` for a test class, by annotating the test class or one or more
non-static fields in the test class.
NOTE: This feature is intended as a less risky alternative to the practice of registering
a bean via `@Bean` with the `DefaultListableBeanFactory`
@@ -43,9 +42,9 @@ The `spring-test` module registers implementations of the latter two
{spring-framework-code}/spring-test/src/main/resources/META-INF/spring.factories[`META-INF/spring.factories`
properties file].
The bean overriding infrastructure searches for annotations on test classes, non-static
fields in test classes, and parameters in test class constructors that are meta-annotated
with `@BeanOverride`, and instantiates the corresponding `BeanOverrideProcessor` which is
The bean overriding infrastructure searches for annotations on test classes as well as
annotations on non-static fields in test classes that are meta-annotated with
`@BeanOverride` and instantiates the corresponding `BeanOverrideProcessor` which is
responsible for creating an appropriate `BeanOverrideHandler`.
The internal `BeanOverrideBeanFactoryPostProcessor` then uses bean override handlers to
@@ -19,6 +19,6 @@ meta-annotation. If a bootstrapper is not explicitly configured by using
`WebTestContextBootstrapper` is used, depending on the presence of `@WebAppConfiguration`.
Since the `TestContextBootstrapper` SPI is likely to change in the future (to accommodate
new requirements), we strongly encourage implementors not to implement this interface
new requirements), we strongly encourage implementers not to implement this interface
directly but rather to extend `AbstractTestContextBootstrapper` or one of its concrete
subclasses instead.
@@ -49,6 +49,7 @@ Kotlin::
<1> Injecting the `ApplicationContext`.
======
Similarly, if your test is configured to load a `WebApplicationContext`, you can inject
the web application context into your test, as follows:
@@ -86,6 +87,7 @@ Kotlin::
<2> Injecting the `WebApplicationContext`.
======
Dependency injection by using `@Autowired` is provided by the
`DependencyInjectionTestExecutionListener`, which is configured by default
(see xref:testing/testcontext-framework/fixture-di.adoc[Dependency Injection of Test Fixtures]).
@@ -94,24 +96,22 @@ Dependency injection by using `@Autowired` is provided by the
Test classes that use the TestContext framework do not need to extend any particular
class or implement a specific interface to configure their application context. Instead,
configuration is achieved by declaring the `@ContextConfiguration` annotation at the
class level. If your test class does not explicitly declare component classes or resource
locations, the configured `ContextLoader` determines how to load a context from _default_
configuration classes or a _default_ location. In addition to component classes and
context resource locations, an application context can also be configured through
xref:testing/testcontext-framework/ctx-management/context-customizers.adoc[context customizers]
or xref:testing/testcontext-framework/ctx-management/initializers.adoc[context initializers].
class level. If your test class does not explicitly declare application context resource
locations or component classes, the configured `ContextLoader` determines how to load a
context from a default location or default configuration classes. In addition to context
resource locations and component classes, an application context can also be configured
through application context initializers.
The following sections explain how to use `@ContextConfiguration` and related annotations
to configure a test `ApplicationContext` by using component classes (typically
`@Configuration` classes), XML configuration files, Groovy scripts, context customizers,
or context initializers. Alternatively, you can implement and configure your own custom
`SmartContextLoader` for advanced use cases.
The following sections explain how to use Spring's `@ContextConfiguration` annotation to
configure a test `ApplicationContext` by using XML configuration files, Groovy scripts,
component classes (typically `@Configuration` classes), or context initializers.
Alternatively, you can implement and configure your own custom `SmartContextLoader` for
advanced use cases.
* xref:testing/testcontext-framework/ctx-management/javaconfig.adoc[Context Configuration with Component Classes]
* xref:testing/testcontext-framework/ctx-management/xml.adoc[Context Configuration with XML Resources]
* xref:testing/testcontext-framework/ctx-management/xml.adoc[Context Configuration with XML resources]
* xref:testing/testcontext-framework/ctx-management/groovy.adoc[Context Configuration with Groovy Scripts]
* xref:testing/testcontext-framework/ctx-management/default-config.adoc[Default Context Configuration]
* xref:testing/testcontext-framework/ctx-management/mixed-config.adoc[Mixing Component Classes, XML, and Groovy Scripts]
* xref:testing/testcontext-framework/ctx-management/javaconfig.adoc[Context Configuration with Component Classes]
* xref:testing/testcontext-framework/ctx-management/mixed-config.adoc[Mixing XML, Groovy Scripts, and Component Classes]
* xref:testing/testcontext-framework/ctx-management/context-customizers.adoc[Context Configuration with Context Customizers]
* xref:testing/testcontext-framework/ctx-management/initializers.adoc[Context Configuration with Context Initializers]
* xref:testing/testcontext-framework/ctx-management/inheritance.adoc[Context Configuration Inheritance]

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