【Redis】jedis用戶端實現redis訊息的發布訂閱（即時訊息中介軟體）

發布

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);}}}

以上發布類，發布的頻道是一個數組，即同時將內容發布到多個頻道中，你可以根據內容去判斷，不同的內容發布到不同的頻道中。

訂閱

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);//取得訂閱的訊息後的處理public void onMessage(String s, String s1) {// TODO Auto-generated method stublog.debug("Message received,Channel:{},Msg:{}",s,s1);}//取得按運算式的方式訂閱的訊息後的處理public void onPMessage(String s, String s1, String s2) {// TODO Auto-generated method stublog.debug("Pattern:{}",s);log.debug("Pattern Message received,Channel:{},Msg:{}",s1,s2);}//初始化按運算式的方式訂閱時候的處理public void onPSubscribe(String s, int i) {// TODO Auto-generated method stublog.debug("Pattern Subscribe,Pattern:{},ChannelNum:{}",s,i);}//取消按運算式的方式訂閱時候的處理public void onPUnsubscribe(String s, int i) {// TODO Auto-generated method stublog.debug("Pattern Unsubscribe,Pattern:{},ChannelNum:{}",s,i);}//初始化訂閱時候的處理public void onSubscribe(String s, int i) {// TODO Auto-generated method stublog.debug("Subscribe,Channel:{},ChannelNum:{}",s,i);}//取消訂閱時候的處理public void onUnsubscribe(String s, int i) {// TODO Auto-generated method stublog.debug("Unsubscribe,Channel:{},ChannelNum:{}",s,i);}}

該類就是訂閱的實作類別，對於訂閱的各項操作實現具體的處理方法。

啟動主類

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 stublog.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.*");按照正則匹配訂閱的頻道

由於訂閱類會阻塞當前線程的執行，所以在main線程中另起一個線程來啟動訂閱，然後啟動發布線程去發布內容。

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