Java21+Lombok1.18.32+STS4.23.1中@Builder+@Singular编译报错

基于Java 21、Lombok 1.18.32的应用中，编写了结合@Builder与@Singular注解的类，代码示例如下：

@Builder
public class Naughty {
    private final @Singular("option") List<Option> options;
}

在Spring Tools Suite 4.23.1中编译时出现注解编译错误，报错堆栈信息如下：

java.lang.NoSuchMethodError: 'void org.eclipse.jdt.internal.compiler.ast.CaseStatement.<init>(org.eclipse.jdt.internal.compiler.ast.Expression, int, int)'
    at lombok.eclipse.Eclipse.createCaseStatement(Eclipse.java:285)
    at lombok.eclipse.handlers.singulars.EclipseJavaUtilListSingularizer.appendBuildCode(EclipseJavaUtilListSingularizer.java:75)
    at lombok.eclipse.handlers.HandleBuilder.generateBuildMethod(HandleBuilder.java:821)
    at lombok.eclipse.handlers.HandleBuilder.handle(HandleBuilder.java:563)
    at lombok.eclipse.HandlerLibrary$AnnotationHandlerContainer.handle(HandlerLibrary.java:106)
    at lombok.eclipse.HandlerLibrary.handleAnnotation(HandlerLibrary.java:237)
    at lombok.eclipse.TransformEclipseAST$AnnotationVisitor.visitAnnotationOnType(TransformEclipseAST.java:269)
    at lombok.eclipse.EclipseNode.traverse(EclipseNode.java:107)
    at lombok.eclipse.EclipseAST.traverseChildren(EclipseAST.java:231)
    at lombok.eclipse.EclipseNode.traverse(EclipseNode.java:74)
    at lombok.eclipse.EclipseAST.traverseChildren(EclipseAST.java:231)
    at lombok.eclipse.EclipseNode.traverse(EclipseNode.java:69)
    at lombok.eclipse.EclipseAST.traverse(EclipseAST.java:224)
    at lombok.eclipse.TransformEclipseAST.go(TransformEclipseAST.java:226)
    at lombok.eclipse.TransformEclipseAST.transform(TransformEclipseAST.java:187)
    at lombok.eclipse.TransformEclipseAST.transform_swapped(TransformEclipseAST.java:104)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
    at java.base/java.lang.reflect.Method.invoke(Method.java:580)
    at lombok.launch.PatchFixesHider$Util.invokeMethod(PatchFixesHider.java:146)
    at lombok.launch.PatchFixesHider$Transform.transform_swapped(PatchFixesHider.java:272)
    at org.eclipse.jdt.internal.compiler.parser.Parser.endParse(Parser.java:11535)
    at org.eclipse.jdt.internal.core.util.CommentRecorderParser.endParse(CommentRecorderParser.java:131)
    at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12735)
    at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12965)
    at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12922)
    at org.eclipse.jdt.internal.compiler.parser.Parser.dietParse(Parser.java:11306)
    at org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(Compiler.java:850)
    at org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(Compiler.java:393)
    at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:1037)
    at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:1110)
    at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:280)
    at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:346)
    at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:186)
    at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:92)
    at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:740)
    at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:805)
    at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1311)
    at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:132)
    at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:94)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:91)
    at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:158)
    at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:94)
    at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:107)
    at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:78)
    at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:207)

当前环境配置：

eclipse.buildId=4.23.1.202406150140
java.version=21.0.2
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product org.springframework.boot.ide.branding.sts4
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.springframework.boot.ide.branding.sts4

问题原因 #

Lombok 1.18.32版本的Eclipse处理器依赖旧版Eclipse JDT的CaseStatement构造方法签名，而STS 4.23.1基于的Eclipse 2024-06版本已修改该方法参数，导致兼容性冲突，触发NoSuchMethodError。

解决方法 #

1. 升级Lombok版本 #

将Lombok升级至1.18.34或更高版本，这些版本已修复与Eclipse 2024-06及STS 4.23.x的兼容性问题。

• Maven项目修改依赖：

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.34</version>
    <scope>provided</scope>
</dependency>

• Gradle项目修改依赖：

compileOnly 'org.projectlombok:lombok:1.18.34'
annotationProcessor 'org.projectlombok:lombok:1.18.34'

2. 同步Lombok插件版本 #

确保STS中安装的Lombok插件版本与项目依赖版本一致：

1. 打开STS，进入Help > About > Installation Details
2. 在"Installed Software"中找到Lombok插件，查看版本
3. 若版本不一致，通过Help > Eclipse Marketplace搜索Lombok并更新插件

内容的提问来源于stack exchange，提问作者Jan Nielsen