我真的对Luna中的Gradle和Groovy插件感到沮丧。我首先开始使用STS 3.6.4，然后我进入了一个状态，我的Groovy视图中的许多绑定根本不起作用，而且我没有得到任何关于此的帖子的回复。
然后我决定尝试新的Eclipse Luna安装，然后安装Groovy和Gradle插件。当我最终导入我的Groovy项目时，我发现了一些奇怪的错误：
org.gradle.jvm.tasks.Jar
Could not fetch model of type 'EclipseProject' using Gradle distribution 'https://services.gradle.org/distributions/gradle-2.2.1-bin.zip'.
我知道Eclipse Mars将完全取代这个Gradle工具，我只希望能够存活到那时。
日志中的堆栈跟踪是：
org.gradle.tooling.BuildException: Could not fetch model of type 'EclipseProject' using Gradle distribution 'https://services.gradle.org/distributions/gradle-2.2.1-bin.zip'.
at org.gradle.tooling.internal.consumer.ResultHandlerAdapter.onFailure(ResultHandlerAdapter.java:57)
at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:57)
at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at org.gradle.tooling.internal.consumer.BlockingResultHandler.getResult(BlockingResultHandler.java:46)
at org.gradle.tooling.internal.consumer.DefaultModelBuilder.get(DefaultModelBuilder.java:48)
at org.springsource.ide.eclipse.gradle.core.modelmanager.ToolinApiUtils.buildModel(ToolinApiUtils.java:103)
at org.springsource.ide.eclipse.gradle.core.modelmanager.DefaultModelBuilder.doBuild(DefaultModelBuilder.java:30)
at org.springsource.ide.eclipse.gradle.core.modelmanager.AbstractModelBuilder.buildModel(AbstractModelBuilder.java:40)
at org.springsource.ide.eclipse.gradle.core.modelmanager.HierarchicalProjectBuildStrategy.buildReferenceModel(HierarchicalProjectBuildStrategy.java:179)
at org.springsource.ide.eclipse.gradle.core.modelmanager.HierarchicalProjectBuildStrategy.buildModels(HierarchicalProjectBuildStrategy.java:65)
at org.springsource.ide.eclipse.gradle.core.modelmanager.GradleProjectModelManager.getModelInternal(GradleProjectModelManager.java:141)
at org.springsource.ide.eclipse.gradle.core.modelmanager.GradleProjectModelManager.getModel(GradleProjectModelManager.java:100)
at org.springsource.ide.eclipse.gradle.core.modelmanager.GradleModelManager.getModel(GradleModelManager.java:77)
at org.springsource.ide.eclipse.gradle.core.GradleProject.getModel(GradleProject.java:576)
at org.springsource.ide.eclipse.gradle.core.classpathcontainer.ClassPathModel.getClassPathModel(ClassPathModel.java:66)
at org.springsource.ide.eclipse.gradle.core.classpathcontainer.GradleClassPathContainer$1.doit(GradleClassPathContainer.java:134)
at org.springsource.ide.eclipse.gradle.core.util.GradleRunnable$1.run(GradleRunnable.java:53)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.gradle.internal.exceptions.LocationAwareException: A problem occurred configuring root project 'YangUsingProject'.
at org.gradle.initialization.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:77)
at org.gradle.initialization.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:47)
at org.gradle.initialization.StackTraceSanitizingExceptionAnalyser.transform(StackTraceSanitizingExceptionAnalyser.java:30)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:108)
at org.gradle.initialization.DefaultGradleLauncher.getBuildAnalysis(DefaultGradleLauncher.java:97)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.configure(InProcessBuildActionExecuter.java:84)
at org.gradle.tooling.internal.provider.BuildModelAction.run(BuildModelAction.java:45)
at org.gradle.tooling.internal.provider.BuildModelAction.run(BuildModelAction.java:30)
at org.gradle.tooling.internal.provider.ConfiguringBuildAction.run(ConfiguringBuildAction.java:119)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:36)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:47)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:35)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:71)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:69)
at org.gradle.util.Swapper.swap(Swapper.java:38)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:69)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:70)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.DaemonHygieneAction.execute(DaemonHygieneAction.java:39)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:46)
at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:246)
at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
Caused by: org.gradle.api.ProjectConfigurationException: A problem occurred configuring root project 'YangUsingProject'.
at org.gradle.configuration.project.LifecycleProjectEvaluator.addConfigurationFailure(LifecycleProjectEvaluator.java:91)
at org.gradle.configuration.project.LifecycleProjectEvaluator.notifyAfterEvaluate(LifecycleProjectEvaluator.java:86)
at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:65)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:504)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:83)
at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(TaskPathProjectEvaluator.java:42)
at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuildConfigurer.java:35)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:129)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
... 32 more
Caused by: org.gradle.listener.ListenerNotificationException: Failed to notify project evaluation listener.
at org.gradle.listener.BroadcastDispatch.dispatch(BroadcastDispatch.java:94)
at org.gradle.listener.BroadcastDispatch.dispatch(BroadcastDispatch.java:31)
at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
at com.sun.proxy.$Proxy12.afterEvaluate(Unknown Source)
at org.gradle.configuration.project.LifecycleProjectEvaluator.notifyAfterEvaluate(LifecycleProjectEvaluator.java:79)
... 39 more
Caused by: java.lang.NoClassDefFoundError: org/gradle/jvm/tasks/Jar
at com.att.opnfv.yang.gradle.YangPlugin$_apply_closure1.doCall(YangPlugin.groovy:51)
at org.gradle.listener.ClosureBackedMethodInvocationDispatch.dispatch(ClosureBackedMethodInvocationDispatch.java:40)
at org.gradle.listener.ClosureBackedMethodInvocationDispatch.dispatch(ClosureBackedMethodInvocationDispatch.java:25)
at org.gradle.listener.BroadcastDispatch.dispatch(BroadcastDispatch.java:83)
... 43 more
Caused by: java.lang.ClassNotFoundException: org.gradle.jvm.tasks.Jar
... 47 more
答案 0 :(得分：3)
看来我已经成功解决了这个问题，虽然我不确定这里到底发生了什么。
我意识到也许这个“org.gradle.jvm.tasks.Jar”类可能不在它试图下载的Gradle版本（2.2.1）中，但是Gradle插件或我的构建脚本中的某些内容需要这个到那里。我确实在我的自定义Gradle插件中引用了该任务，所以也许这是导致问题的引用。
我终于进入了Gradle首选项，看看它认为它使用的是什么版本的Gradle，它只是说“使用Gradle Wrapper Default”，不管是什么。我尝试将该属性更改为指向我的Gradle 2.3发行版，现在该错误消失了。