Question

我是akka的新手，我想知道如何让儿童演员接收消息。

我有一个父演员打印出它接收到一条消息，然后向其子节点发送消息，然后打印出它收到的消息。

当我运行程序时，只有父actor会打印其消息。在那儿我错过了什么？

父演员

class TestDirector(name: String) extends Actor {
  import TestDirector._

  implicit val timeout = Timeout(5.seconds)

  private var child: ActorRef = _

  override def preStart(): Unit = {
    println(name + " pre-start")
    child = context.actorOf(props("test-file"), name = "child-actor")
  }

  override def receive: Receive = {
    case TestDirectory(dir) =>
      println("Test Director")
      child ! TestWorker.TestFile
  }

}

object TestDirector {
  case class TestDirectory(dirName: String)
  case class TestResponse(message: String)

  def props(dirName: String) = Props(classOf[TestDirector], dirName)

}

儿童演员

class TestWorker(fileName: String) extends Actor {
  import TestWorker._

  override def receive: Receive = {
    case TestFile => println("Hello world")
  }

}

object TestWorker {
  case object TestFile

  def props(fileName: String) = Props(classOf[TestWorker], fileName)
}

Answer 1

在TestDirector.preStart中，您说

    child = context.actorOf(props("test-file"), name = "child-actor")

那些＆＃34;道具＆＃34;是Test Director .props，您在上面输入了几行，因此您无休止地创建新的TestDirector。我想你想要的是Test Worker .props：

    child = context.actorOf(TestWorker.props("test-file"), name = "child-actor")

我无法让儿童演员接收消息

1 个答案: