Lombok NoClassDefFoundError 해결법

Question

안녕하세요. 프로그램을 개발하던 중 오류가 생겨 문의드립니다.먼저 저의 프로젝트 환경을 말씀드리겠습니다.- IDE : VSCode- Java : 21- Gradle : 8.11.1- Lombok : 1.18.30--------------------------기존에는 Lombok 관련 어노테이션이 잘 작동하던 상황이였습니다.에러가 발생 한 이후에도 프로젝트 빌드 및 bootrun을 했을 때에는 문제 없이 프로젝트가 실행이 됩니다.문제는, Lombok 어노테이션이 작성된 Entity 마다 아래와 같은 에러가 발생하며, getter, setter 등을 호출하는 다른 클래스 에서는 can't find symbol 에러가 발생한다는 점입니다.제가 시도해 본 방법은 다음과 같습니다.1. setting.json 내용 추가"java.configuration.updateBuildConfiguration": "automatic", "java.import.gradle.arguments": "-PannotationProcessor=enabled", "java.errors.incompleteClasspath.severity": "ignore", "java.jdt.ls.vmargs": "--add-opens jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED",2. VSCode - Extension 설치- Lombok 익스텐션 설치 (에러 발생 전에는 익스텐션 설치를 안했었음)- 자바 관련 익스텐션 재설치- Extension Pack for Java Auto Config- Language Support for Java(TM) by Redhat3. clean build, --refresh-dependencies 등 빌드 초기화 수시로 진행이러한 문제를 해결할 수 있는 방법을 알고 싶습니다.두서 없는 글 읽어주셔서 감사합니다.다음은 에러 코드 내용입니다.Can't initialize javac processor due to (most likely) a class loader problem: java.lang.NoClassDefFoundError: Could not initialize class lombok.javac.Javac at lombok.javac.apt.LombokProcessor.placePostCompileAndDontMakeForceRoundDummiesHook(LombokProcessor.java:174) at lombok.javac.apt.LombokProcessor.init(LombokProcessor.java:96) at lombok.core.AnnotationProcessor$JavacDescriptor.want(AnnotationProcessor.java:160) at lombok.core.AnnotationProcessor.init(AnnotationProcessor.java:213) at lombok.launch.AnnotationProcessorHider$AnnotationProcessor.init(AnnotationProcessor.java:64) at org.netbeans.modules.java.source.indexing.APTUtils$ErrorToleratingProcessor.init(APTUtils.java:995) at com.sun.tools.javac.processing.JavacProcessingEnvironment$ProcessorState.(JavacProcessingEnvironment.java:623) at com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors$ProcessorStateIterator.next(JavacProcessingEnvironment.java:752) at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:846) at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$2200(JavacProcessingEnvironment.java:109) at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1189) at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1302) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1272) at org.netbeans.lib.nbjavac.services.NBJavaCompiler.processAnnotations(NBJavaCompiler.java:64) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1174) at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:348) at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:282) at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:742) at org.netbeans.modules.java.source.parsing.CompilationInfoImpl.toPhase(CompilationInfoImpl.java:426) at org.netbeans.api.java.source.CompilationController.toPhase(CompilationController.java:90) at org.netbeans.modules.java.hints.infrastructure.JavaErrorProvider$1.run(JavaErrorProvider.java:108) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:197) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:180) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:83) at org.netbeans.modules.java.hints.infrastructure.JavaErrorProvider.computeErrors(JavaErrorProvider.java:100) at org.netbeans.modules.java.lsp.server.protocol.TextDocumentServiceImpl.lambda$computeDiags$49(TextDocumentServiceImpl.java:2208) at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:273) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) at org.netbeans.modules.java.lsp.server.protocol.TextDocumentServiceImpl.computeDiags(TextDocumentServiceImpl.java:2213) at org.netbeans.modules.java.lsp.server.protocol.TextDocumentServiceImpl.codeAction(TextDocumentServiceImpl.java:1092) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65) at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120) at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261) at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190) at org.netbeans.modules.java.lsp.server.protocol.Server$ConsumeWithLookup$2.lambda$consume$0(Server.java:339) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:287) at org.netbeans.modules.java.lsp.server.protocol.Server$ConsumeWithLookup$2.consume(Server.java:337) at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194) at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94) at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoSuchFieldException: com.sun.tools.javac.code.TypeTag :: UNKNOWN [in thread "pool-1-thread-1"] at lombok.permit.Permit.getField(Permit.java:144) at lombok.javac.JavacTreeMaker$SchroedingerType.getFieldCached(JavacTreeMaker.java:171) at lombok.javac.JavacTreeMaker$TypeTag.typeTag(JavacTreeMaker.java:259) at lombok.javac.Javac.(Javac.java:186) at lombok.javac.apt.LombokProcessor.placePostCompileAndDontMakeForceRoundDummiesHook(LombokProcessor.java:174) at lombok.javac.apt.LombokProcessor.init(LombokProcessor.java:96) at lombok.core.AnnotationProcessor$JavacDescriptor.want(AnnotationProcessor.java:160) at lombok.core.AnnotationProcessor.init(AnnotationProcessor.java:213) at lombok.launch.AnnotationProcessorHider$AnnotationProcessor.init(AnnotationProcessor.java:64) at org.netbeans.modules.java.source.indexing.APTUtils$ErrorToleratingProcessor.init(APTUtils.java:995) at com.sun.tools.javac.processing.JavacProcessingEnvironment$ProcessorState.(JavacProcessingEnvironment.java:623) at com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors$ProcessorStateIterator.next(JavacProcessingEnvironment.java:752) at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:846) at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$2200(JavacProcessingEnvironment.java:109) at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1189) at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1302) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1272) at org.netbeans.lib.nbjavac.services.NBJavaCompiler.processAnnotations(NBJavaCompiler.java:64) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1174) at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:348) at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:282) at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:742) at org.netbeans.modules.java.source.parsing.CompilationInfoImpl.toPhase(CompilationInfoImpl.java:426) at org.netbeans.api.java.source.CompilationController.toPhase(CompilationController.java:90) at org.netbeans.modules.java.completion.JavaDocumentationTask.resolve(JavaDocumentationTask.java:69) at org.netbeans.modules.java.completion.BaseTask.run(BaseTask.java:96) at org.netbeans.modules.java.completion.JavaDocumentationTask.run(JavaDocumentationTask.java:42) at org.netbeans.modules.editor.java.JavaHoverProvider$2.run(JavaHoverProvider.java:59) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:197) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:180) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:83) at org.netbeans.modules.editor.java.JavaHoverProvider.getHoverContent(JavaHoverProvider.java:56) at org.netbeans.api.lsp.Hover.lambda$getContent$0(Hover.java:52) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575) at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260) at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616) at org.netbeans.api.lsp.Hover.getContent(Hover.java:52) at org.netbeans.modules.java.lsp.server.protocol.TextDocumentServiceImpl.hover(TextDocumentServiceImpl.java:694) ... 18 more

연봉2억 · Accepted Answer

원인: Java 21에서 com.sun.tools.javac.code.TypeTag 내부 구조가 바뀌어, Lombok 1.18.30 이하 버전이 참조 필드를 찾지 못함.해결: Lombok을 1.18.38 (또는 최신) 버전으로 업그레이드.부가 설정: VSCode에 Lombok 익스텐션 설치 및 --add-opens VM 옵션 추가 후, 캐시/의존성 초기화.이렇게 적용하시면 Lombok 관련 NoClassDefFoundError 없이 정상적으로 getter/setter 등 어노테이션 프로세싱이 작동합니다.

삽살개발 · Answer

그래서 에러 내용은 뭘로 생각 하고 있나요

3인칭관찰자시점 · Answer

lombok 1.18.38로 하면 됩니다.

Lombok NoClassDefFoundError 해결법

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