解决使用mapstruct过程中的一次编译报错问题_Internal error in the mapping processor

说明

• mapstruct版本：1.2.0.Final
• 开发工具：IntelliJ IDEA 2021.3.1 (Ultimate Edition)

报错现象

java: Internal error in the mapping processor: java.lang.NullPointerException  	at org.mapstruct.ap.internal.processor.DefaultVersionInformation.createManifestUrl(DefaultVersionInformation.java:180)  	at org.mapstruct.ap.internal.processor.DefaultVersionInformation.openManifest(DefaultVersionInformation.java:151)  	at org.mapstruct.ap.internal.processor.DefaultVersionInformation.getLibraryName(DefaultVersionInformation.java:127)  	at org.mapstruct.ap.internal.processor.DefaultVersionInformation.getCompiler(DefaultVersionInformation.java:120)  	at org.mapstruct.ap.internal.processor.DefaultVersionInformation.fromProcessingEnvironment(DefaultVersionInformation.java:98)  	at org.mapstruct.ap.internal.processor.DefaultModelElementProcessorContext.<init>(DefaultModelElementProcessorContext.java:59)  	at org.mapstruct.ap.MappingProcessor.processMapperElements(MappingProcessor.java:222)  	at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:162)  	at org.jetbrains.jps.javac.APIWrappers$ProcessorWrapper.process(APIWrappers.java:157)  	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  	at java.lang.reflect.Method.invoke(Method.java:498)  	at org.jetbrains.jps.javac.APIWrappers$1.invoke(APIWrappers.java:313)  	at org.mapstruct.ap.MappingProcessor.process(Unknown Source)  	at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)  	at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)  	at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)  	at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)  	at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)  	at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)  	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)  	at com.sun.tools.javac.main.Main.compile(Main.java:523)  	at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)  	at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)  	at org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:238)  	at org.jetbrains.jps.incremental.java.JavaBuilder.lambda$compileJava$2(JavaBuilder.java:518)  	at org.jetbrains.jps.incremental.java.JavaBuilder.invokeJavac(JavaBuilder.java:564)  	at org.jetbrains.jps.incremental.java.JavaBuilder.compileJava(JavaBuilder.java:516)  	at org.jetbrains.jps.incremental.java.JavaBuilder.compile(JavaBuilder.java:359)  	at org.jetbrains.jps.incremental.java.JavaBuilder.doBuild(JavaBuilder.java:284)  	at org.jetbrains.jps.incremental.java.JavaBuilder.build(JavaBuilder.java:238)  	at org.jetbrains.jps.incremental.IncProjectBuilder.runModuleLevelBuilders(IncProjectBuilder.java:1529)  	at org.jetbrains.jps.incremental.IncProjectBuilder.runBuildersForChunk(IncProjectBuilder.java:1163)  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:1310)  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:1128)  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:877)  	at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:459)  	at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:197)  	at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:131)  	at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:334)  	at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:162)  	at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:218)  	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)  	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)  	at java.lang.Thread.run(Thread.java:745)

解决方案

方案一

修改IDEA设置：

Setting -->Build,Execution,Deployment -->Compiler -->User-local build process VM options (overrides Shared options) 下添加配置：

-Djps.track.ap.dependencies=false

方案二

修改mapstruct版本：mapstruct框架引入版本升至1.4.1.Final或更高版本

原因分析

null

参考

• https://stackoverflow.com/questions/65112406/intellij-idea-mapstruct-java-internal-error-in-the-mapping-processor-java-lang
• https://github.com/mapstruct/mapstruct/issues/2215