需要使用如下jar包
　　　　<!-- https://mvnrepository.com/artifact/redis.clients/jedis -->        <dependency>            <groupId>redis.clients</groupId>            <artifactId>jedis</artifactId>            <version>2.8.1</version>        </dependency>        <!-- https://mvnrepository.com/artifact/commons-pool/commons-pool -->        <dependency>            <groupId>commons-pool</groupId>            <artifactId>commons-pool</artifactId>            <version>1.6</version>        </dependency>

package com.spring.wzy;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool;import redis.clients.jedis.JedisPoolConfig;public class JedisPoolUtil {        /**     * 双重锁形式的单例     * */    private static volatile JedisPool jedisPool = null;            private JedisPoolUtil(){}        public static JedisPool getJedisPoolInstance(){        if(null == jedisPool){            synchronized (JedisPoolUtil.class) {                if(null == jedisPool){                //    GenericObjectPoolConfig poolConfig = new JedisPoolConfig();                    JedisPoolConfig poolConfig = new JedisPoolConfig();                   // poolConfig.setMaxActive(1000);//最大实例数                    poolConfig.setMaxWaitMillis(100*1000);//最大等待时间                    poolConfig.setMaxIdle(50);//最多空闲实例                    poolConfig.setTestOnBorrow(true);//获得一个实例时检查连接可用性                    jedisPool = new JedisPool(poolConfig, "192.168.23.128", 6379);                }            }        }        return jedisPool;    }        public static void release(JedisPool jedisPool, Jedis jedis){        if(null != jedis){            //jedis.close();            jedisPool.returnResourceObject(jedis);        }    }}

public static void main(String[] args) throws InterruptedException {        JedisPool jedisPool = JedisPoolUtil.getJedisPoolInstance();        Jedis j = null;        try{             j = jedisPool.getResource();    //        j.select(0);//选中数据库，默认是0号库//        j.flushAll();//清空数据库        //        j.del("key"); //删除key    //        j.set("k1", "v1");//        j.set("k2", "v2");//        j.set("k2", "v3");//新值会把旧值覆盖        //        System.out.println(j.exists("k2"));//返回ture/false//        System.out.println(j.exists("k1","k3"));//返回存在的个数        //        System.out.println(new String(j.get("k1".getBytes())));//        System.out.println(j.get("k2"));        //        Set<String> keys = j.keys("*");//        for(String k:keys){//            System.out.println(k);//        }        //        j.move("k1", 2);//把k1剪切到2号库        //        System.out.println(j.expire("k2", 10));//设置key的存活时间（s），执行成功返回1，否则返回0//        Thread.sleep(3000);//        System.out.println(j.ttl("k2"));//查看key的过期时间                }catch (Exception e) {            e.printStackTrace();        }finally{            JedisPoolUtil.release(jedisPool, j);        }