Jedis实现订阅发布

1. 发布线程

import java.util.concurrent.TimeUnit;

import redis.clients.jedis.Jedis;

public class Publish {
	public static String CHANNEL ="cctv.news";
	public static String[] news = new String[] {"We are brocasting Boxing",
																				"We are brocasting night news",
																				"We are brocasting Cooking",
																				"We are brocating Football"};
	public static void getPublish() throws InterruptedException {
		Jedis jedis = JedisPoolClass.getResource();
		for(String curr:news) {
			jedis.publish(CHANNEL, curr);
			TimeUnit.SECONDS.sleep(1);
		}
		jedis.close();
	}
}

2. 订阅监听类

import redis.clients.jedis.JedisPubSub;

public class SubscriberListener extends JedisPubSub{

	@Override
	public void onMessage(String channel, String message) {
		super.onMessage(channel, message);
		System.out.println("get message from "+channel+" and the message is"+message);
	}

	@Override
	public void onPMessage(String pattern, String channel, String message) {
		super.onPMessage(pattern, channel, message);
		System.out.println("get message from "+channel+" and the message is"+message);
	}

	@Override
	public void onPSubscribe(String pattern, int subscribedChannels) {
		super.onPSubscribe(pattern, subscribedChannels);
		System.out.println("onPubscribe the channel "+subscribedChannels);
	}

	@Override
	public void onPUnsubscribe(String pattern, int subscribedChannels) {
		super.onPUnsubscribe(pattern, subscribedChannels);
		System.out.println("onPubscribe the channel "+subscribedChannels);
	}

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

	@Override
	public void onUnsubscribe(String channel, int subscribedChannels) {
		super.onUnsubscribe(channel, subscribedChannels);
		System.out.println("onUnSubscribe the channel "+subscribedChannels);
	}
	
}

3.连接池

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;

public class JedisPoolClass {
	private static JedisPool pool = null;
	static {
		pool = new JedisPool("localhost", 6379);
	}
	public static Jedis getResource() {
		return pool.getResource();
	}
}

4.测试类

	/**
	 * 必须得先发布再订阅，但是先发布再订阅会导致第一个发布的消息丢失，在实际应用的过程中要考虑到这点
	 */
	private static void PubSubTest() {
		Jedis jedis = JedisPoolClass.getResource();
		Thread thread = new Thread(new Runnable() {
			
			@Override
			public void run() {
				try {
					Publish.getPublish();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		});
		thread.start();
		
		jedis.subscribe(new SubscriberListener(), Publish.CHANNEL);
	}