java怎么监听redis队列

要在Java中监听Redis队列，你可以使用Redis的Pub/Sub（发布/订阅）功能。以下是一个示例代码：

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPubSub;

public class RedisQueueListener extends Thread {
    private Jedis jedis;
    private String channel;
    private JedisPubSub jedisPubSub;

    public RedisQueueListener(Jedis jedis, String channel) {
        this.jedis = jedis;
        this.channel = channel;
        this.jedisPubSub = new JedisPubSub() {
            @Override
            public void onMessage(String channel, String message) {
                // 处理接收到的消息
                System.out.println("Received message: " + message);
            }

            @Override
            public void onSubscribe(String channel, int subscribedChannels) {
                System.out.println("Subscribed to channel: " + channel);
            }

            @Override
            public void onUnsubscribe(String channel, int subscribedChannels) {
                System.out.println("Unsubscribed from channel: " + channel);
            }
        };
    }

    @Override
    public void run() {
        try {
            jedis.subscribe(jedisPubSub, channel);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            jedis.close();
        }
    }

    public static void main(String[] args) {
        Jedis jedis = new Jedis("localhost");
        RedisQueueListener listener = new RedisQueueListener(jedis, "myQueue");
        listener.start();
    }
}

在上面的示例中，RedisQueueListener类继承了Thread类，以便可以在后台运行监听进程。在run()方法中，使用jedis.subscribe()方法订阅指定的频道，并通过JedisPubSub类的回调方法处理接收到的消息。在main()方法中，创建一个Jedis实例，并创建一个RedisQueueListener实例，然后启动监听进程。

你可以根据实际情况修改代码，使其适应你的需求。