Gradle无法编译基本的Scala项目 [英] Gradle Fails to Compile Basic Scala Project
本文介绍了Gradle无法编译基本的Scala项目的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
。
├──build.gradle
└──src
└──Main.scala
build.gradle 很简单：
apply plugin：'scala'
sourceSets {
main {
scala {
srcDir'src'
}
}
}
这个迷人的小错误失败了：
*例外是：
org.gradle.api.tasks.TaskExecutionException：执行任务'：compileScala'失败。在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions
（ExecuteActionsTaskExecuter.java:68）在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute（ExecuteActionsTaskExecuter
。 java：46）
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute（PostExecutionAnalysisTaskExecuter.java:34）
at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExeterter $ 1.run （CacheLockHandlingTaskExecuter.java:34）org.gradle.internal.Factories
$ org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation（DefaultCacheAccess.java：
at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation（DefaultCacheAccess.java:232）
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation（DefaultPersistentDirectoryStore.java:138）
在org.gradle.api.int ernal.changedetection.DefaultTaskArtifactStateCacheAccess.longRunningOperation（DefaultTaskArtifactStateCacheAccess.java:83）
at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExecuter.execute（CacheLockHandlingTaskExecuter.java:32）
at org.gradle.api。 internal.tasks.execution.SkipUpToDateTaskExecuter.execute（SkipUpToDateTaskExecuter.java:55）
在org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute（ValidatingTaskExecuter.java:57）
。在组织。 gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute（SkipEmptySourceFilesTaskExecuter.java:41）
在org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute（SkipTaskWithNoActionsExecuter.java:51）
。在org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute（SkipOnlyIfTaskExecuter.java:52）
在org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute（ExecuteAtMostOnc eTaskExecuter.java:42）
在org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure（AbstractTask.java:247）
在org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask（DefaultTaskPlanExecutor.java： 52）$在org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask（DefaultTaskPlanExecutor.java:38 b $ b）
。在org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process（DefaultTaskPlanExecutor.java:30）
在org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute（DefaultTaskGraphExecuter.java:83）
在org.gradle.execution.SelectedTaskExecutionAction.execute（SelectedTaskExecutionAction.java:29）
在org.gradle .execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:61）
。在org.gradle.execution.DefaultBuildExecuter.access $ 200（DefaultBuildExecuter.java:23）$ b $在org.gradle.execution.DefaultBuildExecuter $ 2.proceed b （DefaultBuildExecuter.java:67）
在org.gradle.api.internal.changedetection.TaskCacheLockHandlingBuildExecuter $ 1.run（TaskCacheLockHandlingBuildExecuter.java:31）$ B $在org.gradle.internal.Factories $ 1，创建（Factories.java:22）
B在组织.gradle.cache.internal.DefaultCacheAccess.useCache（DefaultCacheAccess.java:124）
at org.gradle.cache.internal.DefaultCacheAccess.useCache（DefaultCacheAccess.java:112）
at org.gradle.cache .internal.DefaultPersistentDirectoryStore.useCache（DefaultPersistentDirectoryStore.java:130）
在org.gradle.api.internal.changedetection.DefaultTaskArtifactStateCacheAccess.useCache（DefaultTaskArtifactStateCacheAccess.java:79）
在org.gradle.api.internal .changedetection.TaskCacheLockHandlingBuildExecuter.execute（TaskCacheLockHandlingBuildExecuter.java:29）
at org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:61）
at org.gradle.execution.DefaultBuildExecuter.access $ 200（ DefaultBuildEx ecuter.java:23）
在org.gradle.execution.DefaultBuildExecuter $ 2.proceed（DefaultBuildExecuter.java:67）
在org.gradle.execution.DryRunBuildExecutionAction.execute（DryRunBuildExecutionAction.java:32）
。在org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:61）
处org.gradle org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:54）
。在DefaultGradleLauncher.doBuild（DefaultGradleLauncher.java:113）
在org.gradle.initialization.DefaultGradleLauncher.run（DefaultGradleLauncher。的java：在org.gradle.launcher.cli.ExecuteBuildAction.run（ExecuteBuildAction.java:38 81）
）
。在org.gradle.launcher.exec.InProcessGradleLauncherActionExecuter.execute（InProcessGradleLauncherActionExecuter.java:39）
在org.gradle.launcher.exec.InProce ssGradleLauncherActionExecuter.execute（InProcessGradleLauncherActionExecuter.java:25）
处org.gradle.api.internal.Actions $ RunnableActionAdapter org.gradle.launcher.cli.RunBuildAction.run（RunBuildAction.java:50）
。执行（Actions.java:137）在org.gradle.launcher.cli.CommandLineActionFactory $ ParseAndBuildAction.execute（CommandLineActionFactory.java:201）
。在org.gradle.launcher.cli.CommandLineActionFactory $ ParseAndBuildAction。执行（CommandLineActionFactory.java:174）
at org.gradle.launcher.cli.CommandLineActionFactory $ WithLogging.execute（CommandLineActionFactory.java:170）
at org.gradle.launcher.cli.CommandLineActionFactory $ WithLogging。执行（CommandLineActionFactory.java:139）
在org.gradle.launcher.cli.ExceptionReportingAction.execute（ExceptionReportingAction.java:33）
在org.gradle.launcher.cli.ExceptionReportingAction.execute（ExceptionReportingAction。 java：22）
在org.gradl在org.gradle.launcher.Main上
。 main（Main.java:39）
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:26）
引起：java.lang.NullPointerException：无法在null对象上调用withInputStream（）方法
at org.gradle.api.internal.project.AntBuilderDelegate.taskdef（DefaultIsolatedAntBuilder.groovy：136）
at org.gradle.api.internal.tasks.scala.AntScalaCompiler $ _execute_closure1.doCall（AntScalaCompiler.groovy：62 ）
at org.gradle.api.internal.ClosureBackedAction.execute（ClosureBackedAction.java:58）
at org.gradle.util.ConfigureUtil.configure（ConfigureUtil.java:130）
at org.gradle.util.ConfigureU在org.gradle.api.internal.project.DefaultIsolatedAntBuilder.execute（DefaultIsolatedAntBuilder）中的
（org.gradle.util.ConfigureUtil
（ConfigureUtil.java:91）
.groovy：112）
at org.gradle.api.internal.project.IsolatedAntBuilder $ execute.call（Unknown Source）
at org.gradle.api.internal.tasks.scala.AntScalaCompiler.execute（ AntScalaCompiler.groovy：在org.gradle.api.internal.tasks.scala.DefaultScalaJavaJointCompiler 61）
。在org.gradle.api.internal.tasks.scala.AntScalaCompiler.execute（AntScalaCompiler.groovy）
。执行（DefaultScalaJavaJointCompiler.java:35）
在org.gradle.api.internal.tasks.scala.DefaultScalaJavaJointCompiler.execute（DefaultScalaJavaJointCompiler.java:25）
在org.gradle.api.internal.tasks。 scala.DelegatingScalaCompiler.execute（DelegatingScalaCompiler.java:31）
at org.gradle.api.internal.tasks.scala.DelegatingScalaCompiler.execute（Dele gatingScalaCompiler.java:22）
位于org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute（IncrementalJavaCompilerSupport.java:33）
位于org.gradle.api.internal.tasks.compile。 IncrementalJavaCompilerSupport.execute（IncrementalJavaCompilerSupport.java:23）
在org.gradle.api.tasks.scala.ScalaCompile.compile（ScalaCompile.java:131）
。在org.gradle.api.internal.BeanDynamicObject $ MetaClassAdapter.invokeMethod（BeanDynamicObject.java:216）
at org.gradle.api.internal.BeanDynamicObject.invokeMethod（BeanDynamicObject.java:122）
at org.gradle.api.internal.CompositeDynamicObject.invokeMethod（ CompositeDynamicObject.java:147）
at org.gradle.api.tasks.scala.ScalaCompile_Decorated.invokeMethod（Unknown Source）
at org.gradle.util.ReflectionUtil.invoke（ReflectionUtil.groovy：23）
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ 4.execute（AnnotationProcess ingTaskFactory.java:161）
在org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ 4.execute（AnnotationProcessingTaskFactory.java:156）
在org.gradle.api.internal.AbstractTask $ TaskActionWrapper .execute（AbstractTask.java:472）
at org.gradle.api.internal.AbstractTask $ TaskActionWrapper.execute（AbstractTask.java:461）
at org.gradle.api.internal.tasks.execution .ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:60）
... 57 more
BUILD FAILED
我的 gradle --version 是：
------------------------------------------- -----------------
Gradle 1.3
----------------------- -------------------------------------
Gradle构建时间：星期二，2012年11月20日上午11:37:38 UTC
Groovy：1.8.6
Ant：2012年5月22日编译的Apache Ant（TM）1.8.4版
Ivy：2.2.0
JVM：1.6.0_24（Sun Mi crosystems Inc. 20.0-b12）
OS：Linux 3.2.0-29-generic amd64
什么在世界上出错？
解决方案
您尚未声明要使用哪个Scala版本，如文档中所示和样品。 （该错误消息在即将到来的Gradle 1.4中得到了修复。）
存储库{
mavenCentral（）
}
依赖关系{
scalaToolsorg.scala-lang：scala-compiler：2.9.2
compileorg.scala-lang：scala-library：2.9.2
}
I cannot seem to get gradle to properly compile a simple Scala project. The directory looks like:
.
├── build.gradle
└── src
└── Main.scala
The build.gradle is simply:
apply plugin: 'scala'
sourceSets {
main {
scala {
srcDir 'src'
}
}
}
It fails with this charming little error:
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':compileScala'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:68)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:34)
at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExecuter$1.run(CacheLockHandlingTaskExecuter.java:34)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:179)
at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:232)
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStore.java:138)
at org.gradle.api.internal.changedetection.DefaultTaskArtifactStateCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:83)
at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExecuter.execute(CacheLockHandlingTaskExecuter.java:32)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:55)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:41)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:42)
at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:247)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask(DefaultTaskPlanExecutor.java:52)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask(DefaultTaskPlanExecutor.java:38)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:30)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:83)
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.api.internal.changedetection.TaskCacheLockHandlingBuildExecuter$1.run(TaskCacheLockHandlingBuildExecuter.java:31)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112)
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:130)
at org.gradle.api.internal.changedetection.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
at org.gradle.api.internal.changedetection.TaskCacheLockHandlingBuildExecuter.execute(TaskCacheLockHandlingBuildExecuter.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$2.proceed(DefaultBuildExecuter.java:67)
at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:158)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:38)
at org.gradle.launcher.exec.InProcessGradleLauncherActionExecuter.execute(InProcessGradleLauncherActionExecuter.java:39)
at org.gradle.launcher.exec.InProcessGradleLauncherActionExecuter.execute(InProcessGradleLauncherActionExecuter.java:25)
at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)
at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions.java:137)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:201)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:174)
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:48)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at org.gradle.launcher.Main.main(Main.java:39)
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:26)
Caused by: java.lang.NullPointerException: Cannot invoke method withInputStream() on null object
at org.gradle.api.internal.project.AntBuilderDelegate.taskdef(DefaultIsolatedAntBuilder.groovy:136)
at org.gradle.api.internal.tasks.scala.AntScalaCompiler$_execute_closure1.doCall(AntScalaCompiler.groovy:62)
at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:58)
at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:130)
at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:91)
at org.gradle.util.ConfigureUtil$configure.call(Unknown Source)
at org.gradle.api.internal.project.DefaultIsolatedAntBuilder.execute(DefaultIsolatedAntBuilder.groovy:112)
at org.gradle.api.internal.project.IsolatedAntBuilder$execute.call(Unknown Source)
at org.gradle.api.internal.tasks.scala.AntScalaCompiler.execute(AntScalaCompiler.groovy:61)
at org.gradle.api.internal.tasks.scala.AntScalaCompiler.execute(AntScalaCompiler.groovy)
at org.gradle.api.internal.tasks.scala.DefaultScalaJavaJointCompiler.execute(DefaultScalaJavaJointCompiler.java:35)
at org.gradle.api.internal.tasks.scala.DefaultScalaJavaJointCompiler.execute(DefaultScalaJavaJointCompiler.java:25)
at org.gradle.api.internal.tasks.scala.DelegatingScalaCompiler.execute(DelegatingScalaCompiler.java:31)
at org.gradle.api.internal.tasks.scala.DelegatingScalaCompiler.execute(DelegatingScalaCompiler.java:22)
at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:33)
at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:23)
at org.gradle.api.tasks.scala.ScalaCompile.compile(ScalaCompile.java:131)
at org.gradle.api.internal.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:216)
at org.gradle.api.internal.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:122)
at org.gradle.api.internal.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:147)
at org.gradle.api.tasks.scala.ScalaCompile_Decorated.invokeMethod(Unknown Source)
at org.gradle.util.ReflectionUtil.invoke(ReflectionUtil.groovy:23)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$4.execute(AnnotationProcessingTaskFactory.java:161)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$4.execute(AnnotationProcessingTaskFactory.java:156)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:472)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:461)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:60)
... 57 more
BUILD FAILED
My gradle --version is:
------------------------------------------------------------
Gradle 1.3
------------------------------------------------------------
Gradle build time: Tuesday, November 20, 2012 11:37:38 AM UTC
Groovy: 1.8.6
Ant: Apache Ant(TM) version 1.8.4 compiled on May 22 2012
Ivy: 2.2.0
JVM: 1.6.0_24 (Sun Microsystems Inc. 20.0-b12)
OS: Linux 3.2.0-29-generic amd64
What in the world is going wrong?
解决方案
You haven't declared which Scala version to use, as shown in the docs and samples. (The error message is fixed in the upcoming Gradle 1.4.)
repositories {
mavenCentral()
}
dependencies {
scalaTools "org.scala-lang:scala-compiler:2.9.2"
compile "org.scala-lang:scala-library:2.9.2"
}
这篇关于Gradle无法编译基本的Scala项目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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