Scala 如何在IntelliJ IDEA中改变常春藤之家

为sbt的命令行版本更改Ivy主目录非常简单。您只需将选项

-Dsbt.ivy.home=

添加到

$SBT\u home/conf/sbtconf.txt

我想对IntelliJ IDEA的Scala扩展做同样的事情（我的C驱动器上的磁盘空间快用完了）。因此，我以以下方式修改了SBT设置：文件->其他设置->默认设置-->构建、执行、部署->构建工具->SBT。在VM参数下，我添加了条目

-Dsbt.ivy.home=

。这应该与命令行工具中的效果相同

当我创建一个新的基于sbt的Scala项目（并添加一个打印消息的Scala对象）时，一切似乎都很顺利。我可以建立和运行这个程序。但是在对源代码执行更改并创建项目（Build->makeproject）两到三次之后，我发现以下错误：

Error:scalac: Error: assertion failed: 
  Precisely this override requires its invoker to hand out a non-null AbstractFile.
     while compiling: D:\Temp\scala\scalatest3\src\main\scala\Main.scala
        during phase: jvm
     library version: version 2.12.0
    compiler version: version 2.12.0
  reconstructed args: -nobootcp -javabootclasspath ; -classpath C:\Program Files\Java\jdk1.8.0_102\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\rt.jar;D:\temp\scala\scalatest3\target\scala-2.12\classes;D:\Bin\.ivy2\cache\org.scala-lang\scala-library\jars\scala-library-2.12.0.jar
  last tree to typer: TypeTree(class ListBuffer)
       tree position: line 4 of D:\Temp\scala\scalatest3\src\main\scala\Main.scala
            tree tpe: scala.collection.mutable.ListBuffer[() => Unit]
              symbol: final class ListBuffer in package mutable
   symbol definition: final class ListBuffer extends AbstractBuffer with Buffer with GenericTraversableTemplate with BufferLike with ReusableBuilder with SeqForwarder with Serializable (a ClassSymbol)
      symbol package: scala.collection.mutable
       symbol owners: class ListBuffer
           call site: constructor Main$delayedInit$body in class Main$delayedInit$body in package <empty>
== Source file context for tree position ==
     1   * Created by P20058 on 14.11.2016.
     2   */
     3 object Main extends App {
     4   println("Hello scalatest")
     5 
     6 }
java.lang.AssertionError: assertion failed: 
  Precisely this override requires its invoker to hand out a non-null AbstractFile.
     while compiling: D:\Temp\scala\scalatest3\src\main\scala\Main.scala
        during phase: jvm
     library version: version 2.12.0
    compiler version: version 2.12.0
  reconstructed args: -nobootcp -javabootclasspath ; -classpath C:\Program Files\Java\jdk1.8.0_102\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_102\jre\lib\rt.jar;D:\temp\scala\scalatest3\target\scala-2.12\classes;D:\Bin\.ivy2\cache\org.scala-lang\scala-library\jars\scala-library-2.12.0.jar

  last tree to typer: TypeTree(class ListBuffer)
       tree position: line 4 of D:\Temp\scala\scalatest3\src\main\scala\Main.scala
            tree tpe: scala.collection.mutable.ListBuffer[() => Unit]
              symbol: final class ListBuffer in package mutable
   symbol definition: final class ListBuffer extends AbstractBuffer with Buffer with GenericTraversableTemplate with BufferLike with ReusableBuilder with SeqForwarder with Serializable (a ClassSymbol)
      symbol package: scala.collection.mutable
       symbol owners: class ListBuffer
           call site: constructor Main$delayedInit$body in class Main$delayedInit$body in package <empty>

== Source file context for tree position ==

     1   * Created by P20058 on 14.11.2016.
     2   */
     3 object Main extends App {
     4   println("Hello scalatest34")
     5 
     6 }

    at scala.tools.nsc.backend.jvm.BytecodeWriters$ClassBytecodeWriter.writeClass(BytecodeWriters.scala:120)

    at scala.tools.nsc.backend.jvm.BytecodeWriters$ClassBytecodeWriter.writeClass$(BytecodeWriters.scala:118)

    at scala.tools.nsc.backend.jvm.BytecodeWriters$$anon$4.writeClass(BytecodeWriters.scala:47)

    at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.sendToDisk$1(GenBCode.scala:408)

    at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.drainQ3(GenBCode.scala:427)

    at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.buildAndSendToDisk(GenBCode.scala:387)

    at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.run(GenBCode.scala:350)

    at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1404)

    at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1389)

    at scala.tools.nsc.Global$Run.compileSources(Global.scala:1384)

    at scala.tools.nsc.Global$Run.compile(Global.scala:1478)

    at xsbt.CachedCompiler0.run(CompilerInterface.scala:115)

    at xsbt.CachedCompiler0.run(CompilerInterface.scala:94)

    at xsbt.CompilerInterface.run(CompilerInterface.scala:22)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:498)

    at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:101)

    at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:47)

    at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)

    at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:29)

    at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:26)

    at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:67)

    at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:24)

    at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:498)

    at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)

错误：scalac:错误：断言失败：
正是这种覆盖要求其调用程序发出一个非空的抽象文件。
编译时：D:\Temp\scala\scalatest3\src\main\scala\main.scala
阶段：jvm
库版本：2.12.0版
编译器版本：2.12.0版
重构参数：-nobootcp-javabootclasspath-类路径C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\charsets.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\deploy.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\access-bridge-64.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\cldrdata.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\dnsns.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\jaccess.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\jfxrt.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\localedata.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\nashorn.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunec.jar；C:\ProgramFiles\Java\jdk1.8.0\u 102\jre\lib\ext\sunjce\u provider.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunmsapi.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunpkcs11.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\zipfs.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\javaws.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jce.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jfr.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jfxswt.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jsse.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\management-agent.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\plugin.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\resources.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\rt.jar；D:\temp\scala\scalatest3\target\scala-2.12\classes；D:\Bin\.ivy2\cache\org.scala lang\scala library\jars\scala-library-2.12.0.jar
typer的最后一棵树：TypeTree（类ListBuffer）
树位置：D:\Temp\scala\scalatest3\src\main\scala\main.scala的第4行
树tpe:scala.collection.mutable.ListBuffer[（）=>Unit]
符号：包可变中的最终类ListBuffer
符号定义：最终类ListBuffer使用Buffer扩展AbstractBuffer，使用GenericTraversableTemplate扩展BufferLike，使用ReusableBuilder扩展BufferLike，使用SeqForwarder扩展Serializable（类符号）
符号包：scala.collection.mutable
符号所有者：类ListBuffer
调用站点：构造函数Main$delayedInit$body在类Main$delayedInit$body在包中
==树位置的源文件上下文==
1*由P20058于2016年11月14日创建。
2   */
3对象主扩展应用程序{
4 println（“Hello scalatest”）
5.
6 }
java.lang.AssertionError:断言失败：
正是这种覆盖要求其调用程序发出一个非空的抽象文件。
编译时：D:\Temp\scala\scalatest3\src\main\scala\main.scala
阶段：jvm
库版本：2.12.0版
编译器版本：2.12.0版
重构参数：-nobootcp-javabootclasspath-类路径C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\charsets.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\deploy.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\access-bridge-64.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\cldrdata.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\dnsns.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\jaccess.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\jfxrt.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\localedata.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\nashorn.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunec.jar；C:\ProgramFiles\Java\jdk1.8.0\u 102\jre\lib\ext\sunjce\u provider.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunmsapi.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\sunpkcs11.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\ext\zipfs.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\javaws.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jce.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jfr.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jfxswt.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\jsse.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\management-agent.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\plugin.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\resources.jar；C:\ProgramFiles\Java\jdk1.8.0\U 102\jre\lib\rt.jar；D:\temp\scala\scalatest3\target\scala-2.12\classes；D:\Bin\.ivy2\cache\org.scala lang\scala library\jars\scala-library-2.12.0.jar
typer的最后一棵树：TypeTree（类ListBuffer）
树位置：D:\Temp\scala\scalatest3\src\main\scala\main.scala的第4行
树tpe:scala.collection.mutable.ListBuffer[（）=>Unit]
符号：包可变中的最终类ListBuffer
符号定义：最终类ListBuffer使用Buffer扩展AbstractBuffer，使用GenericTraversableTemplate扩展BufferLike，使用ReusableBuilder扩展BufferLike，使用SeqForwarder扩展Serializable（类符号）
符号包：scala.collection.mutable
符号所有者：类ListBuffer