我不明白为什么在Verticle成功部署后,这段代码中的回调不执行?
public class VertxApp{
public static void main(String[] args) {
Vertx.vertx().deployVerticle(new MyVerticle(), res -> {
System.out.println(res.result());
});
}
}
MyVerticle类:
public class MyVerticle extends AbstractVerticle {
@Override
public void start(Future<Void> startFuture) {
System.out.println("MyVerticle started!");
}
@Override
public void stop(Future stopFuture) throws Exception {
System.out.println("MyVerticle stopped!");
}
}
您永远不会告诉Vert.x
您已经完成了部署。Vert.x
用Future<Void> startFuture
调用您的MyVerticle.start(...)
。初始化完成后,您需要调用startFuture.complete()
。与MyVerticle.stop(...)
相同。
class MyVerticle extends AbstractVerticle {
@Override
public void start(Future<Void> startFuture) {
System.out.println("MyVerticle started!");
startFuture.complete();
}
@Override
public void stop(Future stopFuture) throws Exception {
System.out.println("MyVerticle stopped!");
stopFuture.complete();
}
}
或者您可以像这样覆盖AbstractVerticle.start()
(没有Future
(:
class MyVerticle2 extends AbstractVerticle {
@Override
public void start() {
System.out.println("MyVerticle2 started!");
}
@Override
public void stop() throws Exception {
System.out.println("MyVerticle2 stopped!");
}
}