Scala actor 简单示例

package test.scala.lang.actor

import scala.actors.Actor

object TestScalaActor {

  def main(args: Array[String]): Unit = {
    testActor
    testActor2
  }

  // 通过扩展类创建actor
  def testActor = {
    //要启动一个actor， 需要先构造一个实例， 并调用start方法
    val actor = new HiActor
    actor.start()

    // 向actor发送消息
    actor ! "Hi"
    actor ! "Hii"
  }

  // 创建临时actor
  // 通过 Actor伴生对象 actor 方法创建和启动actor
  def testActor2 = {

    val actor2 = Actor.actor {
      while (true) {
        Actor.receive {
          case "Hi" => println("2Hello")
          case _    => println("2please say Hi")
        }
      }
    }

    actor2 ! "Hi"
    actor2 ! "Hii"
    
    
    val actor3 = Actor.actor{
      while(true) {
        Actor.receive{
          case MsgA => println("MsgA")
          case MsgB => println("MsgB")
          case _    => println("some message")
        }
      }
    }
    actor3 ! MsgA
    actor3 ! MsgB
    actor3 ! "Hi"
  }

}

case class MsgA()

case class MsgB()

// actor 扩展scala.actors.Actor,
// 有一个抽象方法 act， 重写该方法制定该actor的行为
class HiActor extends Actor {

  // act 方法 和 Java Runnable的run 方法类似
  def act() {
    while (true) {
      receive {
        case "Hi" => println("Hello")
        case _    => println("please say Hi")
      }
    }
  }

}