【Redis】jedis客户端实现redis消息的发布订阅（实时消息中间件）

发布

package com.chiwei.redis;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import redis.clients.jedis.Jedis;

public class RedisPublisher {

	private static final Logger log = LoggerFactory.getLogger(RedisPublisher.class);

	private final Jedis pubJedis;

	private final String[] channel;

	public RedisPublisher(Jedis pubJedis, String[] channel) {
		this.pubJedis = pubJedis;
		this.channel = channel;
	}

	public void start() {
		log.debug("Type your message (type quit to exit)");
		int channelLen = channel.length;
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			while (true) {
				String line = br.readLine();
				if (!"quit".equals(line)) {
					for (int i = 0; i < channelLen; i++) {
						if (channel[i].matches("^chiwei.*")) {
							log.debug("Match...");
							pubJedis.publish(channel[i], line + "haha");
						} else {
							pubJedis.publish(channel[i], line);
						}
						log.debug("Publish to {}", channel[i]);
					}
				} else {
					break;
				}
			}
		} catch (Exception e) {
			log.error("IO fail while reading input", e);
		}
	}
}

以上发布类，发布的频道是一个数组，即同时将内容发布到多个频道中，你可以根据内容去判断，不同的内容发布到不同的频道中。

订阅

package com.chiwei.redis;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import redis.clients.jedis.JedisPubSub;

public class RedisSubscriber extends JedisPubSub{

	private static final Logger log = LoggerFactory.getLogger(RedisSubscriber.class);

	//取得订阅的消息后的处理
	public void onMessage(String s, String s1) {
		// TODO Auto-generated method stub
		log.debug("Message received,Channel:{},Msg:{}",s,s1);
	}

	//取得按表达式的方式订阅的消息后的处理
	public void onPMessage(String s, String s1, String s2) {
		// TODO Auto-generated method stub
		log.debug("Pattern:{}",s);
		log.debug("Pattern Message received,Channel:{},Msg:{}",s1,s2);
	}

	//初始化按表达式的方式订阅时候的处理
	public void onPSubscribe(String s, int i) {
		// TODO Auto-generated method stub
		log.debug("Pattern Subscribe,Pattern:{},ChannelNum:{}",s,i);
	}

	//取消按表达式的方式订阅时候的处理
	public void onPUnsubscribe(String s, int i) {
		// TODO Auto-generated method stub
		log.debug("Pattern Unsubscribe,Pattern:{},ChannelNum:{}",s,i);
	}

	//初始化订阅时候的处理
	public void onSubscribe(String s, int i) {
		// TODO Auto-generated method stub
		log.debug("Subscribe,Channel:{},ChannelNum:{}",s,i);
	}

	//取消订阅时候的处理
	public void onUnsubscribe(String s, int i) {
		// TODO Auto-generated method stub
		log.debug("Unsubscribe,Channel:{},ChannelNum:{}",s,i);
	}

}

该类就是订阅的实现类，对于订阅的各项操作实现具体的处理方法。

启动主类

package com.chiwei.redis;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

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

public class RedisPubSubMain {

	public static final String[] CHANNEL_NAME = new String[] { "chiwei.momo", "chiwei.nono","taotao"};

	private static final Logger log = LoggerFactory.getLogger(RedisPubSubMain.class);

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		log.debug("=========================");
		JedisPoolConfig config = new JedisPoolConfig();
		config = new JedisPoolConfig();
		config.setMaxTotal(100);
		config.setMaxIdle(10);
		config.setMaxWaitMillis(1000L);
		config.setTestOnBorrow(true);
		config.setTestOnReturn(true);
		JedisPool jedisPool = new JedisPool(config, "192.168.11.176", 7379);
		final Jedis subJedis = jedisPool.getResource();
		final RedisSubscriber sub = new RedisSubscriber();
		new Thread(new Runnable() {

			public void run() {
				try {
					//subJedis.subscribe(sub, CHANNEL_NAME);
					subJedis.psubscribe(sub, "^chiwei.*");
					log.debug("Subscribe ended");
				} catch (Exception e) {
					log.error("Subscribe failed", e);
				}
			}

		}).start();

		Jedis pubJedis = jedisPool.getResource();
		new RedisPublisher(pubJedis, CHANNEL_NAME).start();
		sub.unsubscribe();
		jedisPool.returnResourceObject(subJedis);
		jedisPool.returnResourceObject(pubJedis);
		jedisPool.close();
	}

}

subJedis.psubscribe(sub, "^chiwei.*");按照正则匹配订阅的频道

由于订阅类会阻塞当前线程的执行，所以在main线程中另起一个线程来启动订阅，然后启动发布线程去发布内容。

2015-04-17 10:35:43,751 - com.chiwei.redis.RedisPubSubMain[18] -0    [main] DEBUG  - =========================
2015-04-17 10:35:43,843 - com.chiwei.redis.RedisSubscriber[29] -92   [Thread-3] DEBUG  - Pattern Subscribe,Pattern:^chiwei.*,ChannelNum:1
2015-04-17 10:35:43,848 - com.chiwei.redis.RedisPublisher[25] -97   [main] DEBUG  - Type your message (type quit to exit)
3
2015-04-17 10:35:53,132 - com.chiwei.redis.RedisPublisher[34] -9381 [main] DEBUG  - Match...
2015-04-17 10:35:53,138 - com.chiwei.redis.RedisPublisher[39] -9387 [main] DEBUG  - Publish to chiwei.momo
2015-04-17 10:35:53,140 - com.chiwei.redis.RedisPublisher[34] -9389 [main] DEBUG  - Match...
2015-04-17 10:35:53,146 - com.chiwei.redis.RedisPublisher[39] -9395 [main] DEBUG  - Publish to chiwei.nono
2015-04-17 10:35:53,153 - com.chiwei.redis.RedisPublisher[39] -9402 [main] DEBUG  - Publish to taotao