build.gradle中的多行Groovy字符串？

Question

我使用gradle并希望在我的build.gradle中创建一个字符串，该字符串跨越多行以使其更易读。

以下是原始内容：

myConfig {
   myFlags "--no-package-directories --prefixes prefixes.properties -use-arc -classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"

}

我尝试使用Groovy多行字符串，但在进行以下操作时出现错误：

myConfig {
   myFlags """--no-package-directories --prefixes prefixes.properties -use-arc 
-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:
${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:
${projectDir}/lib/javax.inject-1.jar"""

}

编辑：myFlags的定义是：

class SomePluginExtension {
    String myFlags = ""
}

我收到的错误信息是：

[sts] Build failed
org.gradle.tooling.BuildException: Could not execute build using Gradle distribution 'https://services.gradle.org/distributions/gradle-2.3-bin.zip'.
    at org.gradle.tooling.internal.consumer.ResultHandlerAdapter.onFailure(ResultHandlerAdapter.java:53)
    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.DefaultBuildLauncher.run(DefaultBuildLauncher.java:71)
    at org.springsource.ide.eclipse.gradle.core.TaskUtil.execute(TaskUtil.java:117)
    at org.springsource.ide.eclipse.gradle.core.launch.GradleProcess$1.doit(GradleProcess.java:92)
    at org.springsource.ide.eclipse.gradle.core.util.GradleRunnable$1.run(GradleRunnable.java:53)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.gradle.internal.exceptions.LocationAwareException: Script '/Users/mg/Documents/Grails/GGTS3.6.2/TestJ2Objc/j2objc.gradle' line: 416
Execution failed for task ':j2objcTranslate'.
    at org.gradle.initialization.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:77)
    at org.gradle.initialization.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:47)
    at org.gradle.initialization.StackTraceSanitizingExceptionAnalyser.transform(StackTraceSanitizingExceptionAnalyser.java:30)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:108)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:80)
    at org.gradle.tooling.internal.provider.BuildModelAction.run(BuildModelAction.java:43)
    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:48)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    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:120)
    at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:47)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:71)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:246)
    at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
Caused by: org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':j2objcTranslate'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:306)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:88)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
    ... 34 more
Caused by: org.gradle.process.internal.ExecException: Process 'command '/Applications/J2Objc/j2objc-0.9.7b/j2objc'' finished with non-zero exit value 1
    at org.gradle.process.internal.DefaultExecHandle$ExecResultImpl.assertNormalExitValue(DefaultExecHandle.java:365)
    at org.gradle.process.internal.DefaultExecAction.execute(DefaultExecAction.java:31)
    at org.gradle.api.internal.file.DefaultFileOperations.exec(DefaultFileOperations.java:151)
    at org.gradle.api.internal.project.AbstractProject.exec(AbstractProject.java:780)
    at org.gradle.api.internal.project.AbstractProject.exec(AbstractProject.java:776)
    at org.gradle.api.Project$exec$6.call(Unknown Source)
    at J2objcTranslateTask.translate(/Users/mg/Documents/Grails/GGTS3.6.2/TestJ2Objc/j2objc.gradle:416)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:218)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:211)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:200)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:585)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:568)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    ... 57 more
[sts] Time taken: 0 min, 0 sec

如何在build.gradle中创建多行Groovy字符串？

- confile

---

实际上你的代码看起来是正确的。你能提供一下myFlags的定义以及你遇到的错误代码吗？这是编译错误还是运行时错误？ - Amnon Shochot

@AmnonShochot 当我将字符串写成多行时，它不会被执行。 - Michael

我更新了之前的评论。我的猜测是直接将多行字符串传递给myFlags会导致问题，因此您可以在闭包外定义一个多行字符串，然后将其传递给myFlags。 - Amnon Shochot

应用程序 Applications/J2Objc/j2objc-0.9.7b/j2objc 无法处理分开的标志。请尝试在多行字符串的前三行末尾加上 \\。 - tim_yates

抱歉，我的意思是 \\\...也就是两个反斜杠。在评论中，Stackoverflow似乎对反斜杠进行了某种转义处理。 - tim_yates

Answer 1

这对我有效：

def multyline = '''\
--no-package-directories --prefixes prefixes.properties -use-arc 
-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:
${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:
${projectDir}/lib/javax.inject-1.jar
'''

希望它能对你有所帮助)

- Colya

Answer 2

这是您的原始内容：

myConfig {
   myFlags "--no-package-directories --prefixes prefixes.properties -use-arc -classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"
}

这是我过去尝试过并且有效的方法：

myConfig {
   myFlags "--no-package-directories --prefixes prefixes.properties -use-arc " +
           "-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"
}

大多数情况下，您可以将 Groovy 视为与 Java 相同：

有效的 Java 代码：

String var = "--no-package-directories --prefixes prefixes.properties -use-arc " +
       "-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"

有效的 Groovy 代码：

def var = "--no-package-directories --prefixes prefixes.properties -use-arc " +
       "-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"

想疯就疯吧：

myConfig {
   myFlags "--no-package-directories " +
           "--prefixes prefixes.properties " +
           "-use-arc " +
           "-classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar:${projectDir}" +
           "/lib/dagger-2.0-SNAPSHOT-sources.jar:${projectDir}/lib/javax.inject-1.jar"
}

- Jared Burrows

---

我也尝试了你做的，但它不起作用。同样的错误。 - Michael

请发布您的整个build.gradle文件，我无法理解您的错误。 - Jared Burrows