Intellij无法运行Scala代码

Question

我有一个使用Java和Scala代码的项目.当我尝试在安装Scala插件0.38.441的Intellij 13.1.4上运行Scala的主函数时出现以下错误

Error:scalac: Error: Scala instance doesn't exist or is invalid: 
    version unknown, library jar: /home/arpit/.m2/repository/org/scala-lang/scala-library/2.11/scala-library-2.11.jar, compiler jar: /home/arpit/.m2/repository/org/scala-lang/scala-compiler/2.11/scala-compiler-2.11.jar
sbt.InvalidScalaInstance: Scala instance doesn't exist or is invalid: 
    version unknown, library jar: /home/arpit/.m2/repository/org/scala-lang/scala-library/2.11/scala-library-2.11.jar, compiler jar: /home/arpit/.m2/repository/org/scala-lang/scala-compiler/2.11/scala-compiler-2.11.jar
    at sbt.ScalaInstance$.slowActualVersion(ScalaInstance.scala:122)
    at sbt.ScalaInstance$.sbt$ScalaInstance$$actualVersion(ScalaInstance.scala:119)
    at sbt.ScalaInstance$$anonfun$actualVersion$1.apply(ScalaInstance.scala:32)
    at sbt.ScalaInstance$$anonfun$actualVersion$1.apply(ScalaInstance.scala:32)
    at scala.Option.getOrElse(Option.scala:120)
    at sbt.ScalaInstance.actualVersion$lzycompute(ScalaInstance.scala:32)
    at sbt.ScalaInstance.actualVersion(ScalaInstance.scala:32)
    at org.jetbrains.jps.incremental.scala.local.CompilerFactoryImpl$.org$jetbrains$jps$incremental$scala$local$CompilerFactoryImpl$$getOrCompileInterfaceJar(CompilerFactoryImpl.scala:79)
    at org.jetbrains.jps.incremental.scala.local.CompilerFactoryImpl$$anonfun$getScalac$1.apply(CompilerFactoryImpl.scala:43)
    at org.jetbrains.jps.incremental.scala.local.CompilerFactoryImpl$$anonfun$getScalac$1.apply(CompilerFactoryImpl.scala:42)
    at scala.Option.map(Option.scala:145)
    at org.jetbrains.jps.incremental.scala.local.CompilerFactoryImpl.getScalac(CompilerFactoryImpl.scala:42)
    at org.jetbrains.jps.incremental.scala.local.CompilerFactoryImpl.createCompiler(CompilerFactoryImpl.scala:21)
    at org.jetbrains.jps.incremental.scala.local.CachingFactory$$anonfun$createCompiler$1.apply(CachingFactory.scala:23)
    at org.jetbrains.jps.incremental.scala.local.CachingFactory$$anonfun$createCompiler$1.apply(CachingFactory.scala:23)
    at org.jetbrains.jps.incremental.scala.local.Cache$$anonfun$getOrUpdate$2.apply(Cache.scala:20)
    at scala.Option.getOrElse(Option.scala:120)
    at org.jetbrains.jps.incremental.scala.local.Cache.getOrUpdate(Cache.scala:19)

我还检查了IntelliJ中项目设置下的编译器设置,对于Scala编译器,它说"在外部构建模式下没有显示此内容".这可能是问题吗？

Answer 1

编译器似乎无法读取 scala-compiler jar 的版本。也许它已损坏。尝试重新下载或使用其他版本。要设置另一个编译器库，请转到模块的项目结构/Facets/Scala 方面，然后选择合适的库。

如果它不起作用，请在 bugtracker 上创建一个票证（带有附加的编译器库）： http://youtrack.jetbrains.com/issues/SCL

您也可以尝试在Settings/IDE Settings/Scala中更改增量编译器的类型

Compiler/Scala Compiler 设置没有任何问题。