无法使用sbt运行简单的akka示例

Question

我只是跟随akka样本，但不能运行程序。

1. 我已经使用自制程序（OSX Mountail Lion）安装了akka、sbt(0.13)、scala(2.10.3)
2. 创建名为AKKA_TEST的空目录
3. 创建build.sbt和hello.scala文件
4. 在akka_test目录中运行sbt，编译命令运行良好
5. SBT的run命令抱怨没有检测到主类

name := "My Project"

version := "1.0"

scalaVersion := "2.10.2"

resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"

libraryDependencies +=
  "com.typesafe.akka" %% "akka-actor" % "2.2.1"

import akka.actor.Actor
import akka.actor.Props

class HelloWorld extends Actor {

  override def preStart(): Unit = {
    // create the greeter actor
    val greeter = context.actorOf(Props[Greeter], "greeter")
    // tell it to perform the greeting
    greeter ! Greeter.Greet
  }

  def receive = {
    // when the greeter is done, stop this actor and with it the application
    case Greeter.Done ⇒ context.stop(self)
  }
}

object Greeter {
  case object Greet
  case object Done
}

class Greeter extends Actor {
  def receive = {
    case Greeter.Greet ⇒
      println("Hello World!")
      sender ! Greeter.Done
  }
}

Answer 1

sbt有run-main命令从命令行接受main类，因此full命令是

sbt "run-main akka.Main HelloWorld"