publish：
发送消息：Redis采用PUBLISH命令发送消息，其返回值为接收到该消息的订阅者的数量。 subscribe：
订阅某个频道：Redis采用SUBSCRIBE命令订阅某个频道，其返回值包括客户端订阅的频道，目前已订阅的频道数量，以及接收到的消息，其中subscribe表示已经成功订阅了某个频道。 psubscribe：
模式匹配：模式匹配功能允许客户端订阅符合某个模式的频道，Redis采用PSUBSCRIBE订阅符合某个模式所有频道，用“”表示模式，“”可以被任意值代替。

<dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>3.1.0</version>
</dependency> 

import redis.clients.jedis.JedisPubSub;public class RedisMsgPubSubListener extends JedisPubSub {@Overridepublic void unsubscribe() {super.unsubscribe();}@Overridepublic void unsubscribe(String... channels) {super.unsubscribe(channels);}@Overridepublic void subscribe(String... channels) {super.subscribe(channels);}@Overridepublic void psubscribe(String... patterns) {super.psubscribe(patterns);}@Overridepublic void punsubscribe() {super.punsubscribe();}@Overridepublic void punsubscribe(String... patterns) {super.punsubscribe(patterns);}@Overridepublic void onMessage(String channel, String message) {System.out.println("channel:" + channel + "receives message :" + message);this.unsubscribe();}@Overridepublic void onPMessage(String pattern, String channel, String message) {}@Overridepublic void onSubscribe(String channel, int subscribedChannels) {System.out.println("channel:" + channel + "is been subscribed:" + subscribedChannels);}@Overridepublic void onPUnsubscribe(String pattern, int subscribedChannels) {}@Overridepublic void onPSubscribe(String pattern, int subscribedChannels) {}@Overridepublic void onUnsubscribe(String channel, int subscribedChannels) {System.out.println("channel:" + channel + "is been unsubscribed:" + subscribedChannels);}
}

package demo.redis;import redis.clients.jedis.Jedis;public class TestMain {@Testpublic void testSubscribe() throws Exception{Jedis jedis = new Jedis("localhost");RedisMsgPubSubListener listener = new RedisMsgPubSubListener();jedis.subscribe(listener, "redisChatTest");//other code}@Testpublic void testPublish() throws Exception{Jedis jedis = new Jedis("localhost");jedis.publish("redisChatTest", "Hello World");Thread.sleep(5000);jedis.publish("redisChatTest", "Hello Redis");}
}