这是有效的代码。它向Actor(Greeter)发送消息并等待回复。 但它阻止了当前的线程。
public class Future1Blocking {
public static void main(String[] args) throws Exception {
ActorSystem system = ActorSystem.create("system");
final ActorRef actorRef = system.actorOf(Props.create(Greeter.class), "greeter");
Timeout timeout = new Timeout(Duration.create(5, "seconds"));
Future<Object> future = Patterns.ask(actorRef, Greeter.Msg.GREET, timeout);
// this blocks current running thread
Greeter.Msg result = (Greeter.Msg) Await.result(future, timeout.duration());
System.out.println(result);
}
}
我的示例使用future.onSuccess
获取结果而不阻塞当前调用线程的可行方法是什么?
答案 0 :(得分:10)
稀释。这很容易(抱歉)。
future.onSuccess(new PrintResult<Object>(), system.dispatcher());
其中:
public final class PrintResult<T> extends OnSuccess<T> {
@Override public final void onSuccess(T t) {
System.out.println(t);
}
}