Problem with Internal error in the mapping procesor while using mapstruct

Question

it was my first attempt using gradle and i got some weird problem i never heard of. Google didn't help me too much so i am humbly asking for some help. I started using mapstruct after i got some problems with my dao Recipe after adding annotation entity.

I have 2 dependencies related to mapstruct on my gradle file

implementation 'org.mapstruct:mapstruct:1.5.2.Final'

annotationProcessor 'org.mapstruct:mapstruct-processor:1.5.2.Final'

this is my code error, what is interesting is that code works perfectly, but i can't compile it again. If u need some code i'll be happy to provide, as u can see on the screen i have some code generated, but i'm unsure when and why it stopped working.

Internal error in the mapping processor: java.lang.RuntimeException: javax.annotation.processing.FilerException: Attempt to recreate a file for type recipes.mapper.RecipeMapperImpl    at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.createSourceFile(MapperRenderingProcessor.java:59)      at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.writeToSourceFile(MapperRenderingProcessor.java:39)     at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.process(MapperRenderingProcessor.java:29)   at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.process(MapperRenderingProcessor.java:24)   at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:350)     at org.mapstruct.ap.MappingProcessor.processMapperTypeElement(MappingProcessor.java:330)    at org.mapstruct.ap.MappingProcessor.processMapperElements(MappingProcessor.java:279)   at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:174)     at org.gradle.api.internal.tasks.compile.processing.DelegatingProcessor.process(DelegatingProcessor.java:62)    at org.gradle.api.internal.tasks.compile.processing.IsolatingProcessor.process(IsolatingProcessor.java:50)      at org.gradle.api.internal.tasks.compile.processing.DelegatingProcessor.process(DelegatingProcessor.java:62)    at org.gradle.api.internal.tasks.compile.processing.TimeTrackingProcessor.access$401(TimeTrackingProcessor.java:37)     at org.gradle.api.internal.tasks.compile.processing.TimeTrackingProcessor$5.create(TimeTrackingProcessor.java:99)   at org.gradle.api.internal.tasks.compile.processing.TimeTrackingProcessor$5.create(TimeTrackingProcessor.java:96)   at org.gradle.api.internal.tasks.compile.processing.TimeTrackingProcessor.track(TimeTrackingProcessor.java:117)     at org.gradle.api.internal.tasks.compile.processing.TimeTrackingProcessor.process(TimeTrackingProcessor.java:96)    at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:985)    at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:901)      at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1227)   at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1340)    at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1258)    at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:936)    at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)   at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)    at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)   at org.gradle.internal.compiler.java.IncrementalCompileTask.call(IncrementalCompileTask.java:89)    at org.gradle.api.internal.tasks.compile.AnnotationProcessingCompileTask.call(AnnotationProcessingCompileTask.java:94)      at org.gradle.api.internal.tasks.compile.ResourceCleaningCompilationTask.call(ResourceCleaningCompilationTask.java:57)      at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:54)   at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:39)   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:97)   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:51)   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:37)   at org.gradle.api.internal.tasks.compile.AnnotationProcessorDiscoveringCompiler.execute(AnnotationProcessorDiscoveringCompiler.java:51)     at org.gradle.api.internal.tasks.compile.AnnotationProcessorDiscoveringCompiler.execute(AnnotationProcessorDiscoveringCompiler.java:37)     at org.gradle.api.internal.tasks.compile.ModuleApplicationNameWritingCompiler.execute(ModuleApplicationNameWritingCompiler.java:46)     at org.gradle.api.internal.tasks.compile.ModuleApplicationNameWritingCompiler.execute(ModuleApplicationNameWritingCompiler.java:36)     at org.gradle.jvm.toolchain.internal.DefaultToolchainJavaCompiler.execute(DefaultToolchainJavaCompiler.java:57)     at org.gradle.api.tasks.compile.JavaCompile.lambda$createToolchainCompiler$1(JavaCompile.java:232)      at org.gradle.api.internal.tasks.compile.CleaningJavaCompiler.execute(CleaningJavaCompiler.java:53)     at org.gradle.api.internal.tasks.compile.incremental.IncrementalCompilerFactory.lambda$createRebuildAllCompiler$0(IncrementalCompilerFactory.java:52)   at org.gradle.api.internal.tasks.compile.incremental.SelectiveCompiler.execute(SelectiveCompiler.java:67)   at org.gradle.api.internal.tasks.compile.incremental.SelectiveCompiler.execute(SelectiveCompiler.java:41)   at org.gradle.api.internal.tasks.compile.incremental.IncrementalResultStoringCompiler.execute(IncrementalResultStoringCompiler.java:66)     at org.gradle.api.internal.tasks.compile.incremental.IncrementalResultStoringCompiler.execute(IncrementalResultStoringCompiler.java:52)     at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler$2.call(CompileJavaBuildOperationReportingCompiler.java:59)      at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler$2.call(CompileJavaBuildOperationReportingCompiler.java:51)      at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)      at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)     at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)     at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler.execute(CompileJavaBuildOperationReportingCompiler.java:51)     at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:279)    at org.gradle.api.tasks.compile.JavaCompile.performIncrementalCompilation(JavaCompile.java:165)     at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:146)   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.base/java.lang.reflect.Method.invoke(Method.java:566)   at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)   at org.gradle.api.internal.project.taskfactory.IncrementalInputsTaskAction.doExecute(IncrementalInputsTaskAction.java:32)   at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:51)   at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)     at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:29)   at org.gradle.api.internal.tasks.execution.TaskExecution$2.run(TaskExecution.java:239)      at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)    at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)      at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)      at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)      at org.gradle.api.internal.tasks.execution.TaskExecution.executeAction(TaskExecution.java:224)      at org.gradle.api.internal.tasks.execution.TaskExecution.executeActions(TaskExecution.java:207)     at org.gradle.api.internal.tasks.execution.TaskExecution.executeWithPreviousOutputFiles(TaskExecution.java:190)     at org.gradle.api.internal.tasks.execution.TaskExecution.execute(TaskExecution.java:168)    at org.gradle.internal.execution.steps.ExecuteStep.executeInternal(ExecuteStep.java:89)     at org.gradle.internal.execution.steps.ExecuteStep.access$000(ExecuteStep.java:40)      at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:53)      at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:50)      at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)      at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)     at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)     at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:50)     at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:40)     at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:68)     at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:38)     at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:48)     at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:36)     at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:41)     at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:74)   at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:55)     at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:51)     at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:29)     at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.execute(CaptureStateAfterExecutionStep.java:61)   at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.execute(CaptureStateAfterExecutionStep.java:42)   at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:60)   at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:27)   at org.gradle.internal.execution.steps.BuildCacheStep.executeWithoutCache(BuildCacheStep.java:188)      at org.gradle.internal.execution.steps.BuildCacheStep.lambda$execute$1(BuildCacheStep.java:75)      at org.gradle.internal.Either$Right.fold(Either.java:175)   at org.gradle.internal.execution.caching.CachingState.fold(CachingState.java:59)    at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:73)   at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:48)   at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:38)     at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:27)     at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:36)     at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:22)     at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:109)   at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$2(SkipUpToDateStep.java:56)      at java.base/java.util.Optional.orElseGet(Optional.java:369)    at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:56)   at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:38)   at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:73)   at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:44)   at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:37)    at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:27)    at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:89)     at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:50)     at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:114)      at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:57)   at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:76)     at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:50)     at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:93)    at java.base/java.util.Optional.orElseGet(Optional.java:369)    at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:93)     at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:34)     at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:38)      at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:43)   at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:31)   at org.gradle.internal.execution.steps.AssignWorkspaceStep.lambda$execute$0(AssignWorkspaceStep.java:40)    at org.gradle.api.internal.tasks.execution.TaskExecution$3.withWorkspace(TaskExecution.java:284)    at org.gradle.internal.execution.steps.AssignWorkspaceStep.execute(AssignWorkspaceStep.java:40)     at org.gradle.internal.execution.steps.AssignWorkspaceStep.execute(AssignWorkspaceStep.java:30)     at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:37)     at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:27)     at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:44)   at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:33)   at org.gradle.internal.execution.impl.DefaultExecutionEngine$1.execute(DefaultExecutionEngine.java:76)      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:142)   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:131)      at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)     at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)   at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)   at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)     at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)   at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)   at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)   at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)      at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)      at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)      at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)     at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)     at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)     at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:74)   at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:402)   at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:389)   at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:382)      at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:368)      at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)      at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)   at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)   at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)   at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)   at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:61)    at java.base/java.lang.Thread.run(Thread.java:829)  Caused by: javax.annotation.processing.FilerException: Attempt to recreate a file for type recipes.mapper.RecipeMapperImpl      at jdk.compiler/com.sun.tools.javac.processing.JavacFiler.checkNameAndExistence(JavacFiler.java:724)    at jdk.compiler/com.sun.tools.javac.processing.JavacFiler.createSourceOrClassFile(JavacFiler.java:489)      at jdk.compiler/com.sun.tools.javac.processing.JavacFiler.createSourceFile(JavacFiler.java:426)     at org.gradle.api.internal.tasks.compile.processing.IncrementalFiler.createSourceFile(IncrementalFiler.java:45)     at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.createSourceFile(MapperRenderingProcessor.java:56)      ... 184 more

image of error

Answer 1

It seems that you already have a file call RecipeMapperImpl if i look your image.
But the file didn't appear on the left in project explorer.

MapStruct will create a file RecipeMapperImpl so he wont success if one already exist.

I suggest to remove the file RecipeMapperImpl in your project if he still exist and run a clean compile with gradle.

I faced the same error for this reason. Hope it help.

Answer 2

I had the same problem when I was using one more plugin for code generation. In my case, it was com.sun.xml.ws:jaxws-maven-plugin:4.0.1, which generates java classes from WSDL. When I changed sourceDestinationDir for jaxws-maven-plugin to new destination {project.baseDir}/target/generated-source/xjc/ (instead of {project.baseDir}/target/generated-source/, it solved my problem.

So try to check if you are not using some different plugin/processor that generates code to the same location as mapstruct.

Answer 3

MapStruct automatically creates in the folder target/generated-sources/... the basic implementation to the methods declared in your interface. Try to delete the .java file autogenerated and compile again.

Answer 4

For me in IntelliJ this problem was solved by restarting the IDE with cache invalidation.

Answer 5

Try deleting target/ folder and rebuild the project. Worked for me.

Answer 6

Try these options for maven plugin "useIncrementalCompilation = false. It worked for me

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>${maven.compiler.source}</source>
                <target>${maven.compiler.target}</target>
                <useIncrementalCompilation>false</useIncrementalCompilation>

Answer 7

enter image description here I compiled and worked successfully after that I deleted the generated class 'ObjectConvertorImpl' from the file 'target/generate-sources'