Question

尝试使用scala插件在IDEA中使用scala：

我的HelloWorld对象：

object HelloWorld {

  def main(args: Array[String]) {
    println("Hello")
  }

}

有时从上下文菜单中按“运行HelloWorld”时出现下一个错误。

    scalac: Error: Could not find an output directory for /Users/username/Work/src/sandbox/src/HelloWorld.scala in List((/Users/username/work/src/sandbox/src,/Users/username/work/src/sandbox/out/production/sandbox))
scala.reflect.internal.FatalError: Could not find an output directory for /Users/username/Work/src/sandbox/src/HelloWorld.scala in List((/Users/username
/work/src/sandbox/src,/Users/username/work/src/sandbox/out/production/sandbox))
at scala.tools.nsc.settings.MutableSettings$OutputDirs.outputDirFor(MutableSettings.scala:303)
at scala.tools.nsc.backend.jvm.BytecodeWriters$class.outputDirectory(BytecodeWriters.scala:26)
at scala.tools.nsc.backend.jvm.BytecodeWriters$class.scala$tools$nsc$backend$jvm$BytecodeWriters$$getFile(BytecodeWriters.scala:37)
at scala.tools.nsc.backend.jvm.BytecodeWriters$ClassBytecodeWriter$class.writeClass(BytecodeWriters.scala:89)
at scala.tools.nsc.backend.jvm.GenASM$AsmPhase$$anon$4.writeClass(GenASM.scala:67)
at scala.tools.nsc.backend.jvm.GenASM$JBuilder.writeIfNotTooBig(GenASM.scala:458)
at scala.tools.nsc.backend.jvm.GenASM$JMirrorBuilder.genMirrorClass(GenASM.scala:2954)
at scala.tools.nsc.backend.jvm.GenASM$AsmPhase.run(GenASM.scala:113)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1583)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1557)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1553)
at scala.tools.nsc.Global$Run.compile(Global.scala:1662)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:126)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:102)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:26)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:25)
at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:58)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:21)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)

此错误非常烦人，因为要修复它我需要重新启动IDEA，清理/编译我的项目，添加/删除启动配置几次。也可以从终端手动执行错误的命令行。

Answer 1

查看错误评论：

无法找到以下输出目录：
  /Users/username/Work/src/sandbox/src/HelloWorld.scala

in


/用户/用户名/的工作 / SRC /沙箱/ SRC

/用户/用户名/的工作 / SRC /沙箱/缩小/生产/沙箱

根据您运行的环境，上/下案例差异中的IntelliJ很重要。请确保您的user.home属性设置正确。

Answer 2

Norbert Radyk的回答并不适用于我。在我的情况下，路径是正确的。我不得不删除target/scala-2.11/test-classes文件夹以强制Intellij重新编译测试类。虽然只要我不必修改测试本身就会起作用，但有点痛苦。因此，如果您确实需要调试测试，那么这不是一个真正的解决方案，而是一些黑客攻击。

IDEA Scala：找不到输出目录

2 个答案: