Windows 上的 Gradle 构建错误“无法为文件创建 MD5 哈希”答案

【问题标题】：Gradle build error on Windows "Failed to create MD5 hash for file"Windows 上的 Gradle 构建错误“无法为文件创建 MD5 哈希”
【发布时间】：2021-04-22 20:15:38
【问题描述】：

我正在现有项目上运行 gradle 构建，但在下面遇到此错误。

出了什么问题：在最新检查期间未能捕获任务“someTask”属性“destinationDir”的输出文件快照。

未能为文件“my_project_dir\.gradle\3.5\fileContent\fileContent.lock”创建 MD5 哈希。

尝试：使用 --stacktrace 选项运行以获取堆栈跟踪。使用 --info 或 --debug 选项运行以获得更多日志输出。

我使用 --stacktrace 选项运行，它抱怨文件被锁定在 project_dir\3.5\fileContent 中，但无法找出问题所在，感谢任何指针。

> org.gradle.api.UncheckedIOException: Failed to capture snapshot of
> output files for task ':someTask' property 'destinationDir'
> during up-to-date check.
>         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.snapshotTaskFiles(CacheBackedTaskHistoryRepository.java:329)
>         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.createExecution(CacheBackedTaskHistoryRepository.java:153)
>         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.access$100(CacheBackedTaskHistoryRepository.java:61)
>         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1.getCurrentExecution(CacheBackedTaskHistoryRepository.java:111)
>         at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.getStates(DefaultTaskArtifactStateRepository.java:203)
>         at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.isUpToDate(DefaultTaskArtifactStateRepository.java:89)
>         at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:50)
>         at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
>         at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
>         at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
>         at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
>         at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:88)
>         at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
>         at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
>         at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
>         at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
>         at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
>         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
>         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
>         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
>         at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:623)
>         at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:578)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
>         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:59)
>         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:128)
>         at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
>         at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
>         at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
>         at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
>         at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:46)
>         at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
>         at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
>         at org.gradle.initialization.DefaultGradleLauncher$ExecuteTasks.run(DefaultGradleLauncher.java:318)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
>         at org.gradle.initialization.DefaultGradleLauncher.runTasks(DefaultGradleLauncher.java:204)
>         at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:134)
>         at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:109)
>         at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:78)
>         at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:75)
>         at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:152)
>         at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:100)
>         at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:75)
>         at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
>         at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
>         at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
>         at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$1.run(RunAsBuildOperationBuildActionRunner.java:43)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
>         at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
>         at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40)
>         at org.gradle.tooling.internal.provider.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:51)
>         at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:49)
>         at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:32)
>         at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:39)
>         at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:25)
>         at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:80)
>         at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:53)
>         at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:57)
>         at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:32)
>         at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:36)
>         at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:25)
>         at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43)
>         at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29)
>         at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:64)
>         at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:29)
>         at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:59)
>         at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:44)
>         at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:45)
>         at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:30)
>         at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67)
>         at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
>         at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
>         at org.gradle.util.Swapper.swap(Swapper.java:38)
>         at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:62)
>         at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:82)
>         at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
>         at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
>         at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
>         at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:295)
>         at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
>         at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
>         at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
> Caused by: org.gradle.api.UncheckedIOException: Failed to create MD5
> hash for file content.
>         at org.gradle.internal.hash.DefaultStreamHasher.hash(DefaultStreamHasher.java:40)
>         at org.gradle.internal.hash.DefaultFileHasher.hash(DefaultFileHasher.java:40)
>         at org.gradle.api.internal.changedetection.state.CachingFileHasher.snapshot(CachingFileHasher.java:88)
>         at org.gradle.api.internal.changedetection.state.CachingFileHasher.snapshot(CachingFileHasher.java:75)
>         at org.gradle.api.internal.changedetection.state.CachingFileHasher.hash(CachingFileHasher.java:61)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter.fileSnapshot(DefaultFileSystemSnapshotter.java:244)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter.access$700(DefaultFileSystemSnapshotter.java:60)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter$FileVisitorImpl.visitFile(DefaultFileSystemSnapshotter.java:297)
>         at org.gradle.api.internal.file.collections.jdk7.Jdk7DirectoryWalker$1.visitFile(Jdk7DirectoryWalker.java:86)
>         at org.gradle.api.internal.file.collections.jdk7.Jdk7DirectoryWalker$1.visitFile(Jdk7DirectoryWalker.java:59)
>         at org.gradle.api.internal.file.collections.jdk7.Jdk7DirectoryWalker.walkDir(Jdk7DirectoryWalker.java:59)
>         at org.gradle.api.internal.file.collections.DirectoryFileTree.walkDir(DirectoryFileTree.java:154)
>         at org.gradle.api.internal.file.collections.DirectoryFileTree.visitFrom(DirectoryFileTree.java:132)
>         at org.gradle.api.internal.file.collections.DirectoryFileTree.visit(DirectoryFileTree.java:117)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter.snapshotAndCache(DefaultFileSystemSnapshotter.java:192)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter.access$500(DefaultFileSystemSnapshotter.java:60)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter$4.create(DefaultFileSystemSnapshotter.java:174)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter$4.create(DefaultFileSystemSnapshotter.java:169)
>         at org.gradle.cache.internal.ProducerGuard$StripedProducerGuard.guardByKey(ProducerGuard.java:115)
>         at org.gradle.api.internal.changedetection.state.DefaultFileSystemSnapshotter.snapshotDirectoryTree(DefaultFileSystemSnapshotter.java:169)
>         at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter$FileCollectionVisitorImpl.visitDirectoryTree(AbstractFileCollectionSnapshotter.java:98)
>         at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter$FileCollectionVisitorImpl.visitCollection(AbstractFileCollectionSnapshotter.java:82)
>         at org.gradle.api.internal.file.AbstractFileCollection.visitRootElements(AbstractFileCollection.java:234)
>         at org.gradle.api.internal.file.CompositeFileCollection.visitRootElements(CompositeFileCollection.java:185)
>         at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter.snapshot(AbstractFileCollectionSnapshotter.java:53)
>         at org.gradle.api.internal.changedetection.state.DefaultGenericFileCollectionSnapshotter.snapshot(DefaultGenericFileCollectionSnapshotter.java:38)
>         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.snapshotTaskFiles(CacheBackedTaskHistoryRepository.java:327)
>         ... 107 more Caused by: java.io.IOException: The process cannot access the file because another process has locked a portion of
> the file
>         at org.gradle.internal.hash.DefaultStreamHasher.doHash(DefaultStreamHasher.java:54)
>         at org.gradle.internal.hash.DefaultStreamHasher.hash(DefaultStreamHasher.java:38)
>         ... 133 more

【问题讨论】：

标签： windows gradle

【解决方案1】：

这里的问题是目标目录包含.gradle 目录，该目录由初始 gradle 进程使用，因此在 Windows 中被锁定。然后守护进程尝试对锁定文件进行哈希处理，因为它对目标目录中的所有文件进行哈希处理以检查任务是否是最新的，但由于它是锁定文件，因此任何其他进程都无法访问它。

解决方法是将任务的输出目录设置为一个文件夹，这样就不会干扰任何被锁定的文件。

【讨论】：

谢谢，我们如何为构建类型设置这个输出目录？
或其他任何人，这个答案很好，但我们不知道该怎么做才能“将任务的输出目录设置为不能干扰的文件夹”。怎么样？
真的取决于你的任务。例如，复制任务有一个into 声明目标目录的语句，而构建/编译任务默认将其内容放入项目 buildDir 中。
我刚刚删除了.gradle 文件夹并再次运行它。它有效。

【解决方案2】：

尝试使用此标志运行 gradlew：

--project-cache-dir=../cache

【讨论】：

这是唯一对我有用的解决方案，谢谢。
更奇怪的是，如果我设置 --project-cache-dir=./.gradle，即它在不设置该标志的情况下使用的默认缓存文件夹，它实际上可以工作。似乎是一个明确的 Windows 错误。
这对我自古以来的许多项目都有帮助，但没有为一个项目工作，不知道为什么

【解决方案3】：

我使用rootProject.file 方法解决了问题：

task exportJar(type: Copy) {

    def fromDir = rootProject.file("app/build/myFile.jar")
    def toDir = rootProject.file("app/destination")
    from(fromDir)
    into(toDir)
}

【讨论】：

你把这个任务放在哪里了？

【解决方案4】：

当我有（在我的 %GRADLE_HOME% 中）两个 gradle 属性文件时，我遇到了同样的问题：

gradle.properties
gradle_copy.properties（然后删除）

【讨论】：

【解决方案5】：

我迟到了，但删除 node_modules 并运行 npm install 对我有用。

【讨论】：

【解决方案6】：

切换到另一个 Git 分支，然后返回帮助。

【讨论】：

【解决方案7】：

您可以通过执行以下操作简单地将 .gradle 文件夹排除在输出 jar 文件中，

task createJar(type: Jar) {     
    archiveName('jarFile.jar')     
    String destFile = new File("path/to/jar").getCanonicalPath()     
    destinationDir(new File(destFile))      
    from('path/to/sources') {         
        exclude '.gradle'     
    }     
    with jar  
}

【讨论】：

【解决方案8】：

@Max Pengstrong> 评论说，从项目根目录中删除 .gradle 目录对我有用。谢谢麦克斯！

【讨论】：