运行w /一个简单的SBT项目w /
Java 7(下面的详细信息)和调用sbt在命令行运行(没有IntelliJ或任何东西)
资源
import scala.tools.nsc.{ Global,Settings } object Playground extends App { val compiler = new Global(new Settings()) val testFiles = List("Test.scala") val runner = new compiler.Run() val result = runner.compile(testFiles) println(result) }
error: error while loading Object,Missing dependency 'object scala in compiler mirror',required by /Library/Java/JavaVirtualMachines/jdk1.7.0_60.jdk/Contents/Home/jre/lib/rt.jar(java/lang/Object.class) [error] (run-main-0) scala.reflect.internal.MissingRequirementError: object scala in compiler mirror not found. scala.reflect.internal.MissingRequirementError: object scala in compiler mirror not found. at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:17) at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.scala:18) at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:53) at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:66) at scala.reflect.internal.Mirrors$RootsBase.getPackage(Mirrors.scala:173) at scala.reflect.internal.DeFinitions$DeFinitionsClass.ScalaPackage$lzycompute(DeFinitions.scala:161) at scala.reflect.internal.DeFinitions$DeFinitionsClass.ScalaPackage(DeFinitions.scala:161) at scala.reflect.internal.DeFinitions$DeFinitionsClass.ScalaPackageClass$lzycompute(DeFinitions.scala:162) at scala.reflect.internal.DeFinitions$DeFinitionsClass.ScalaPackageClass(DeFinitions.scala:162) at scala.reflect.internal.DeFinitions$DeFinitionsClass.init(DeFinitions.scala:1388) at scala.tools.nsc.Global$Run.<init>(Global.scala:1053) <etc...>
build.sbt
scalaVersion := "2.11.4" val scalaV = "2.11.4" libraryDependencies ++= Seq( "org.scala-lang" % "scala-compiler" % scalaV,"org.scala-lang" % "scala-library" % scalaV,"org.scala-lang" % "scala-reflect" % scalaV )
java的
$java -version java version "1.7.0_60-ea" Java(TM) SE Runtime Environment (build 1.7.0_60-ea-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.60-b09,mixed mode)
解决方法
这是你必须说的:
trait Probe object Playground extends App { //val compiler = new Global(new Settings()) val s = new Settings() s.embeddedDefaults[Probe] val compiler = new Global(s) val testFiles = List("Test.scala") val runner = new compiler.Run() val result = runner.compile(testFiles) println(result) }
这花了我几分钟的时间.该方法名称“embeddedDefaults”与sbt中的任何一个都是隐藏的.
对MutableSettings的评论(这表明副作用):
/** Initializes these settings for embedded use by type `T`. * The class loader defining `T` should provide resources `app.class.path` * and `boot.class.path`. These resources should contain the application * and boot classpaths in the same form as would be passed on the command line.*/
缩进与源代码一样.