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1.1 - 自行下载jedis jar包.
用maven的话
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
1.2 - 打开 redis 服务器待命.
1/3.
先打开
SUB端:
package example.me.PubSub;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPubSub;
public class MySub {
public static void main(String[] args) {
final String host = "127.0.0.1";// Redis服务所在地址
final int port = 6379; // 主机端口
@SuppressWarnings("resource")
Jedis subJedis = new Jedis(host, port);
JedisPubSub jedissubSub = new JedisPubSub() {
public void onUnsubscribe(String channel, int num) {
}
public void onSubscribe(String channel, int num) {
}
public void onMessage(String channel, String msg) {
System.out.println(channel + " : " + msg);
}
public void onPUnsubscribe(String channel, int num) {
}
/*
* num 订阅数量
*/
public void onPSubscribe(String channel, int num) {
}
/*
* channel0订阅的channel正则表达式
* channel 匹配上该正则channel值
* msg 收到的消息
*/
public void onPMessage(String channel0, String channel, String msg) {
}
};
/*
* 启动订阅,当该方法启动时,将阻塞等待消息
* 说明:
* 1.subscribe(JedisPubSub jedisPubSub, String... channels)
* 是常规订阅方法,channel值基于完全匹配,方法中channels是多个要订阅的channel值
* 2.psubscribe(JedisPubSub jedisPubSub, String... patterns)
* 是正则订阅方法,channel值基于正则匹配,方法中的patterns是多个订阅到正则表达式
* 不同的订阅将会触发JedisPubSub中不同的方法
*/
subJedis.subscribe(jedissubSub, "news", "tvshow");//完全匹配
}
}
2/3.
PUB端:
package example.me.PubSub;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class MyPub {
public static void main(String[] args) {
JedisPoolConfig poolConfig = new JedisPoolConfig();
poolConfig.setMaxIdle(5);
poolConfig.setMinIdle(1);
poolConfig.setMaxWaitMillis(30000);
JedisPool jedisPool = new JedisPool(poolConfig,"localhost", 6379, 100);
Jedis pubJedis = jedisPool.getResource();
try{
pubJedis.publish("news", "Hello,MySubs~ ");//发送广播
}catch(Exception e){
e.printStackTrace();
}finally{
jedisPool.returnResource(pubJedis);
jedisPool.close();
}
}
}
3/3.
同时我们在 redis-cli 端也订阅相同channel:
jedis-SUB端:
redis-cli端:
4.1 - 本篇仅作为基础,还有很多功能未展现.
4.2 - Redis-Clients-Officialsite已有很多十分优秀的开源项目供参考.
参考资料:https://redis.io/clients
本文原文地址:http://blog.csdn.net/timo1160139211
小可不才,恭听指正.
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