取消预定的执行者

本文介绍了取消预定的执行者的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我目前有一个预定的执行器，它在像这样的延迟后发出一条消息:

I currently have a scheduled executor which sends out a message after a delay like this:

executor.schedule(new Runnable() { public void run() { emitter.emit( message ); } }, delay, TimeUnit.MILLISECONDS);

我需要另一个线程来侦听取消消息，该消息将发送不同的消息，并且我需要停止发送上述消息.如果没有接收到取消消息，则上述发送照常进行.最好的方法是什么?

I need to have another thread which will listen for a cancel message which will send a different message and I need to stop the above message from sending. If no cancel message is received the above sends as normal. Whats the best way to do this?

谢谢.

推荐答案

这可以通过使用

ScheduledFuture<?> future = executor.schedule(new Runnable() { public void run() { emitter.emit( message ); } }, delay, TimeUnit.MILLISECONDS); future.cancel(true); //true if task should be interrupted

或使用执行程序的shutdown()方法. 看看关机 a>() 和取消 ()

or by using the shutdown() method of the executor. Take a look at shutdown() and cancel()