Question

我有一个结构如下的项目：

maven-as-submodule -仅仅是一个gradle项目； graph-gen -是gradle项目中的Maven模块（不是子模块）

好吧，我的目标是运行命令：mvn graphwalker:generate-sources 从gradle任务开始。所以我写了一些：

task generateGraphBasedInterfaces(type: Exec) {
    workingDir './graph-gen'
    commandLine 'mvn graphwalker:generate-sources'
}

一切似乎都还好，我可以在/ graph-gen目录中运行命令mvn graphwalker:generate-sources而不会出现问题。

但是当我尝试通过gradle任务运行它时-最终会出错。因此，这是一些堆栈跟踪：

异常是：org.gradle.api.tasks.TaskExecutionException：任务'：generateGraphBasedInterfaces'的执行失败。在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda $ executeIfValid $ 1（ExecuteActionsTaskExecuter.java:187）在org.gradle.internal.Try $ Failure.ifSuccessfulOrElse（Try.java:263）在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid（ExecuteActionsTaskExecuter.java:185）在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute（ExecuteActionsTaskExecuter.java:166）在org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute（CleanupStaleOutputsExecuter.java:109）在org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute（FinalizePropertiesTaskExecuter.java:46）在org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute（ResolveTaskExecutionModeExecuter.java:62）在org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute（SkipTaskWithNoActionsExecuter.java:57）在org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute（SkipOnlyIfTaskExecuter.java:56）在org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute（CatchExceptionTaskExecuter.java:36）在org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter $ 1.executeTask（EventFiringTaskExecuter.java:77）在org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter $ 1.call（EventFiringTaskExecuter.java:55）在org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter $ 1.call（EventFiringTaskExecuter.java:52）在org.gradle.internal.operations.DefaultBuildOperationExecutor $ CallableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:416）在org.gradle.internal.operations.DefaultBuildOperationExecutor $ CallableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:406）处在org.gradle.internal.operations.DefaultBuildOperationExecutor $ 1.execute（DefaultBuildOperationExecutor.java:165）在org.gradle.internal.operations.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:250）在org.gradle.internal.operations.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:158）在org.gradle.internal.operations.DefaultBuildOperationExecutor.call（DefaultBuildOperationExecutor.java:102）在org.gradle.internal.operations.DelegatingBuildOperationExecutor.call（DelegatingBuildOperationExecutor.java:36）处在org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute（EventFiringTaskExecuter.java:52）在org.gradle.execution.plan.LocalTaskNodeExecutor.execute（LocalTaskNodeExecutor.java:41）在org.gradle.execution.taskgraph.DefaultTaskExecutionGraph $ InvokeNodeExecutorsAction.execute（DefaultTaskExecutionGraph.java:374）处在org.gradle.execution.taskgraph.DefaultTaskExecutionGraph $ InvokeNodeExecutorsAction.execute（DefaultTaskExecutionGraph.java:361）处在org.gradle.execution.taskgraph.DefaultTaskExecutionGraph $ BuildOperationAwareExecutionAction.execute（DefaultTaskExecutionGraph.java:354）处在org.gradle.execution.taskgraph.DefaultTaskExecutionGraph $ BuildOperationAwareExecutionAction.execute（DefaultTaskExecutionGraph.java:340）处在org.gradle.execution.plan.DefaultPlanExecutor $ ExecutorWorker.lambda $ run $ 0（DefaultPlanExecutor.java:127）中在org.gradle.execution.plan.DefaultPlanExecutor $ ExecutorWorker.execute（DefaultPlanExecutor.java:191）处在org.gradle.execution.plan.DefaultPlanExecutor $ ExecutorWorker.executeNextNode（DefaultPlanExecutor.java:182）在org.gradle.execution.plan.DefaultPlanExecutor $ ExecutorWorker.run（DefaultPlanExecutor.java:124）在org.gradle.internal.concurrent.ExecutorPolicy $ CatchAndRecordFailures.onExecute（ExecutorPolicy.java:64）在org.gradle.internal.concurrent.ManagedExecutorImpl $ 1.run（ManagedExecutorImpl.java:48）在org.gradle.internal.concurrent.ThreadFactoryImpl $ ManagedThreadRunnable.run（ThreadFactoryImpl.java:56）引起原因：org.gradle.process.internal.ExecException：一个问题发生启动过程'命令'MVN graphwalker：generate-sources' 在org.gradle.process.internal.DefaultExecHandle.execExceptionFor（DefaultExecHandle.java:241）在org.gradle.process.internal.DefaultExecHandle.setEndStateInfo（DefaultExecHandle.java:218）在org.gradle.process.internal.DefaultExecHandle.failed（DefaultExecHandle.java:372）在org.gradle.process.internal.ExecHandleRunner.run（ExecHandleRunner.java:87）在org.gradle.internal.operations.CurrentBuildOperationPreservingRunnable.run（CurrentBuildOperationPreservingRunnable.java:42） ... 3更多原因：net.rubygrapefruit.platform.NativeException：无法启动'mvn graphwalker：generate-sources' 在net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start（DefaultProcessLauncher.java:27）在net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start（WrapperProcessLauncher.java:36）在org.gradle.process.internal.ExecHandleRunner.startProcess（ExecHandleRunner.java:98）在org.gradle.process.internal.ExecHandleRunner.run（ExecHandleRunner.java:71） ... 4更多原因：java.io.IOException：无法运行程序“ mvn graphwalker：generate-sources”（在目录中） “ /用户/ Sanchellios / WORK_DIR / experiments / maven-as-submodule / graph-gen”）：错误= 2，没有这样的文件或目录在net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start（DefaultProcessLauncher.java:25） ... 7更多原因：java.io.IOException：错误= 2，没有这样的文件或目录 ...还有8个

我什至尝试在 graph-gen 模块内部生成Maven包装器-它没有帮助。

将任务更改为

任务runMvnInterfaceGenerator（type：Exec）{ DependOn'copyGraphsToGenerator' workingDir'./graph-gen' args'graphwalker：generate-sources' 可执行文件“ MVN” }

运作良好。那么，commandLine有什么问题？

Answer 1

commandLine参数需要单独传递：

task generateGraphBasedInterfaces(type: Exec) {
    workingDir rootProject.getProjectDir().getAbsolutePath() + "/graph-gen"
    commandLine "mvn", "graphwalker:generate-sources"
}

还要确保$PATH上有mvn / mvn.cmd。

如何从gradle任务运行mvn命令？

1 个答案: