jedis连接池及简单应用(util)

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1.jedis mavne 坐标：

 <!-- https://mvnrepository.com/artifact/redis.clients/jedis --><dependency>    <groupId>redis.clients</groupId>    <artifactId>jedis</artifactId>    <version>2.9.0</version></dependency>

2.代码：

import java.util.HashMap;import java.util.List;import java.util.Map;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool;import redis.clients.jedis.JedisPoolConfig;/** * 这是一个jedis连接池工具类，以及一些jedis基本应用。 * @author lin * @date 2017/10/12  */public class jedisUtil {    //Redis服务器IP    private static String ADDR = "127.0.0.1";    //Redis的端口号    private static int PORT = 6379;    //访问密码    private static String AUTH = "123456";    //可用连接实例的最大数目，默认值为8；    //如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。    private static int MAX_ACTIVE = 1024;    //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值8。    private static int MAX_IDLE = 200;    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException；    private static int MAX_WAIT = 10000;    private static int TIMEOUT = 10000;    //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；    private static boolean TEST_ON_BORROW = true;    private static JedisPool jedisPool = null;    /**     * 初始化Redis连接池     */    static {        try {            JedisPoolConfig config = new JedisPoolConfig();            config.setMaxTotal(MAX_ACTIVE);            config.setMaxIdle(MAX_IDLE);            config.setMaxWaitMillis(MAX_WAIT);            config.setTestOnBorrow(TEST_ON_BORROW);            jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT);            //需要认证           // jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT,AUTH);         } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 获取Jedis实例     * @return     */    public synchronized static Jedis getJedis() {        try {            if (jedisPool != null) {                Jedis resource = jedisPool.getResource();                return resource;            } else {                return null;            }        } catch (Exception e) {            e.printStackTrace();            return null;        }    }    /**     * 释放jedis资源     * @param jedis     */    public static void returnResource(final Jedis jedis) {        if (jedis != null) {            jedisPool.returnResource(jedis);            jedisPool.close();        }    }    public static void main(String[] args) {        Jedis jedis = jedisUtil.getJedis();        //jedisUtil.edisString(jedis);        //jedisUtil.edisMap(jedis);        //jedisUtil.edisList(jedis);        //jedisUtil.edisSet(jedis);        //jedisUtil.edisZset(jedis);    }    /**     * 操作字符串     * @param jedis     */    public static void edisString(Jedis jedis) {        //set-get        jedis.set("kk","lin");        String kk = jedis.get("kk");        System.out.println(kk);        //追加        jedis.append("kk","qihong");        kk = jedis.get("kk");        System.out.println(kk);        //删除        jedis.del("kk");        kk = jedis.get("kk");        System.out.println(kk);        //设置多个键值对        jedis.mset("name","linqihong","age","20");        String name = jedis.get("name");        System.out.println("name：" + name);        String age = jedis.get("age");        System.out.println("age：" + age);        //自增1         jedis.incr("age");         age = jedis.get("age");         System.out.println("age：" + age);    }    /**     * 操作Map     * @param jedis     */    public static void edisMap(Jedis jedis) {        Map<String,String> map = new HashMap<String,String>();        map.put("name","linqihong");        map.put("age","23");        map.put("phone","15218612811");        //hmset - hmget        jedis.hmset("user",map);         List<String> maplist = jedis.hmget("user","name","age");        System.out.println(maplist);        //删除map中某个键值对        jedis.hdel("user","phone");        System.out.println("phone:" + jedis.hmget("user","phone"));        System.out.println(jedis.hexists("user","phone"));        System.out.println(jedis.hlen("user"));        System.out.println("keys:"+jedis.hkeys("user"));        System.out.println("values"+jedis.hvals("user"));    }    /**     * 操作list     * @param jedis     */    public static void edisList(Jedis jedis) {        //lpush向集合添加元素        jedis.lpush("javaKJ", "springMVC");        jedis.lpush("javaKJ","spring");        jedis.lpush("javaKJ", "mybatis");        System.out.println(jedis.lrange("javaKJ", 0, -1));        //del        //jedis.del("javaKJ");        //System.out.println(jedis.lrange("javaKJ", 0, -1));        jedis.rpush("javaKJ", "strus2");        System.out.println(jedis.lrange("javaKJ", 0, -1));    }    /**     * 操作set     * @param jedis     */    public static void edisSet(Jedis jedis) {        //sadd        jedis.sadd("books","java编程思想");        jedis.sadd("books", "java编程规范");        jedis.sadd("books","redis入门");        //获取集合元素        System.out.println(jedis.smembers("books"));        //判断某元素是否是集合元素        System.out.println(jedis.sismember("books", "redis入门"));    }    /**     * 操作zset     * @param jedis     */    public static void edisZset(Jedis jedis) {         //zadd         jedis.zadd("zuowei",1, "lin1");         jedis.zadd("zuowei", 2,"lin2");         jedis.zadd("zuowei", 3, "lin3");         //获取数据集         System.out.println(jedis.zrange("zuowei", 0, 4));    }}

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