Scala 当试图从演员那里得到回应时，他收到了一封死信

我有ParentActor和2个ChildActor这是我的代码

Class ParentActor extends Actor {

val mongoActor = context.of.....
val esActor = context.of ............

def receive {
case InserInMongo(obj) =>
val mFuture = ask(mongoActor, InsertDataInMongo(object)).mapTo[Boolean]
      mFuture.onComplete {
        case Success(resultMongo) =>
             sender ! resultMongo
        case Failure(e) =>
            sender ! akka.actor.Status.Failure(e)
            throw e
        }   

case InserInES(obj) =>
val eFuture = ask(esActor, InsertDataInES(object)).mapTo[Boolean]
      eFuture.onComplete {
        case Success(resultES) =>
             sender ! resultES
        case Failure(e) =>
            sender ! akka.actor.Status.Failure(e)
            throw e
        }
}
}

这是电话号码

class Demo {
    val mongoFuture = ask(parentActor, InsertInMongo(obj))
            .mapTo[Boolean]
            .recover {
              case e =>
                println("error in mongo: " + e)
                false
            }

          val esFuture = ask(parentActor, InsertInES(obj))
            .mapTo[Boolean]
            .recover {
              case e =>
                println("error in ES: " + e)
                false
            }

          val f = Future.sequence(List(mongoFuture, esFuture))
          val result: Seq[Boolean] = Await.result(f, Duration.Inf)
          log.info ("result {}",result)
}

一切都很好，但如果我在MongoChildator中得到一些MongoException，我就无法获得ES的父级演员结果

这是我得到的

17:19:45.782 [MyActorSystem-akka.actor.default-dispatcher-4] INFO  akka.actor.DeadLetterActorRef - Message [java.lang.Boolean] from Actor[akka://MyActorSystem/user/ParentActor#1383701267] to Actor[akka://MyActorSystem/deadLetters] was not delivered. [2] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.

---

我想要的是，如果我在mongo中得到异常，我得到了异常，然后它应该继续执行ES并返回其结果（其成功值或异常）

不要在

receive

中抛出异常，也不要关闭

sender

（

sender

是一个函数，仅在

receive

的上下文中有效，您正在另一个线程上的

.onComplete

中使用它）

像这样的东西可以满足您的需求：

 import akka.pattern.pipe
 def receive: Receive = {
   case InserInMongo(obj) =>
     ask(mongoActor, InsertDataInMongo(object)).pipeTo(sender)   

  case InserInES(obj) =>
     ask(esActor, InsertDataInES(object)).pipeTo(sender)

 }

或者更容易：

 def receive: Receive {
   case msg: InsertDataInMongo =>
      mongoActor.forward(msg)
   case msg: InsertDataInES =>
      esActor.forward(msg)
 }

---

不要在

receive

中抛出异常，也不要关闭

sender

（

sender

是一个函数，它仅在

receive

的上下文中有效，您正在另一个线程上的

内部使用它

像这样的东西可以满足您的需求：

 import akka.pattern.pipe
 def receive: Receive = {
   case InserInMongo(obj) =>
     ask(mongoActor, InsertDataInMongo(object)).pipeTo(sender)   

  case InserInES(obj) =>
     ask(esActor, InsertDataInES(object)).pipeTo(sender)

 }

或者更容易：

 def receive: Receive {
   case msg: InsertDataInMongo =>
      mongoActor.forward(msg)
   case msg: InsertDataInES =>
      esActor.forward(msg)
 }