如何在java中获取已创建的TypedActor的实例

Question

我使用这样的代码：

首先在代码中的某处创建用户actor，如下所示：

TypedActor.get(actorSystem).typedActorOf(new TypedProps<UserActor>(IUserActor.class, new Creator<UserActor>() {
        @Override
        public UserActor create() throws Exception {
            return new UserActor(userId);
        }
    }), userId);

之后，我正在尝试获取它的实例（就像actor for UntypedActors一样）：

ActorRef userActorRef = actorSystem.actorFor("akka://actors/user/" + userId));
UserActor userActor = TypedActor.get(actorSystem).typedActorOf(new TypedProps<UserActor>(UserActor.class), userActorRef);

// exception is here:
userActor.gotRequest(msg);

但是一旦我在userActor上调用了一个方法，我就得到了

java.lang.ClassCastException: $Proxy5 cannot be cast to com.lutshe.akka.actors.UserActor
    at com.lutshe.akka.AkkaMessagesHandler.process(AkkaMessagesHandler.java:47)
    at com.lutshe.tcp.server.TestMessageHandler.messageReceived(TestMessageHandler.java:31)
    at com.lutshe.tcp.server.TestMessageHandler.messageReceived(TestMessageHandler.java:14)
    at io.netty.channel.ChannelInboundMessageHandlerAdapter.inboundBufferUpdated(ChannelInboundMessageHandlerAdapter.java:69)
 ...

我做错了什么？感谢

Answer 1

Akka返回接口的代理，而不是实现，你应该这样做：

 IUserActor userActor = TypedActor.get(actorSystem).typedActorOf(new TypedProps<IUserActor>(UserActor.class), userActorRef);