Java: gradle build failed bootRepackage (on create jar)

Question

Doing a web project means: Java (jdk 1.7.0.51) + Spring framework (+velocity) + Hibernate + Gradle + Apache Tomcat. Suddenly, there was a problem: you can not make a build. To build using Gradle.

16:50:30: Executing external task 'build'... :compileJava :processResources UP-TO-DATE :classes :jar :bootRepackage FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':bootRepackage'. MALFORMED * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. BUILD FAILED Total time: 14.935 secs MALFORMED

What could be the problem?

The full log:

:bootRepackage FAILED
FAILURE: Build failed with an exception.
* What went wrong: Execution failed for task ':bootRepackage'. MALFORMED
* Try:
Run with --info or --debug option to get more log output.
* Exception is: org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':bootRepackage'. at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter. java:69) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46 ) at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskEx ecuter.java:35) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExec uter.java:42) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.j ava:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.j ava:43) at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:286) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecut or.java:79) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecut or.java:63) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java: 51) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$1.run(DefaultTaskPlanExecutor.java:33) at org.gradle.internal.Factories$1.create(Factories.java:22) at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:198) at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:266) at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStor e.java:135) at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.longRunningOperation(Defaul tTaskArtifactStateCacheAccess.java:93) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:31) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:86) at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61) at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23) at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67) at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54) at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166) at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113) at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81) at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter .java:64) at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33) at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26) at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50) at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions.java:171) at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:20 1) at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:17 4) at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:170) at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:139) at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33) at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22) at org.gradle.launcher.Main.doAction(Main.java:46) at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45) at org.gradle.launcher.Main.main(Main.java:37) at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:50) at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:32) at org.gradle.launcher.GradleMain.main(GradleMain.java:23) at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30) at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127) at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:58) Caused by: java.lang.IllegalArgumentException: MALFORMED at org.springframework.boot.loader.tools.MainClassFinder.getClassEntries(MainClassFinder.java:237) at org.springframework.boot.loader.tools.MainClassFinder.doWithMainClasses(MainClassFinder.java:200) at org.springframework.boot.loader.tools.MainClassFinder.findSingleMainClass(MainClassFinder.java:187) at org.springframework.boot.loader.tools.Repackager.findMainMethod(Repackager.java:228) at org.springframework.boot.gradle.repackage.RepackageTask$LoggingRepackager.findMainMethod(RepackageTask.java:2 19) at org.springframework.boot.loader.tools.Repackager.buildManifest(Repackager.java:206) at org.springframework.boot.loader.tools.Repackager.repackage(Repackager.java:139) at org.springframework.boot.loader.tools.Repackager.repackage(Repackager.java:122) at org.springframework.boot.gradle.repackage.RepackageTask$RepackageAction.repackage(RepackageTask.java:173) at org.springframework.boot.gradle.repackage.RepackageTask$RepackageAction.execute(RepackageTask.java:138) at org.springframework.boot.gradle.repackage.RepackageTask$RepackageAction.execute(RepackageTask.java:1) at org.gradle.api.internal.Actions$FilteredAction.execute(Actions.java:203) at org.gradle.api.internal.DefaultDomainObjectCollection.all(DefaultDomainObjectCollection.java:110) at org.gradle.api.internal.DefaultDomainObjectCollection.withType(DefaultDomainObjectCollection.java:120) at org.springframework.boot.gradle.repackage.RepackageTask.repackage(RepackageTask.java:89) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63) at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(Anno tationProcessingTaskFactory.java:219) at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(Annota tionProcessingTaskFactory.java:212) at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(Annota tionProcessingTaskFactory.java:201) at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:530) at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:513) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.j ava:80) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter. java:61) ... 52 more
BUILD FAILED
Total time: 13.0 secs

Solution 1

If you don't use boot repackage you can simply disable bootRepackage tasks by adding this line into your build.gradle file:

bootRepackage.enabled = false

Otherwise you need to specify the main class:

bootRepackage {
    mainClass = 'youPackage.Application'
}

You can find more instructions in this link

Share your build.gradle if you still have problem.

Solution 2

From Spring Boot release 2.0 M1 the bootRepackage task has been replaced with bootJar and bootWar tasks.

Comments

[cellepo]

This helped me solve building a JAR without packaging source classes under BOOT-INF: BOOT-INF is what you want for a runnable JAR, but NOT what you want for a source/dependency JAR.