Redis 连接池以及工具类的构建

RedisPool.java

package com.jmall.common;

import com.jmall.util.PropertiesUtil;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 * @Author: jackie
 * @Date: 2018/12/22 17:01
 * @Version 1.0
 */
public class RedisPool {
    private static JedisPool pool;//jedis连接数
    private static Integer maxTotal = Integer.parseInt(PropertiesUtil.getProperty("redis.max.total","20"));//最大连接数
    private static Integer maxIdle = Integer.parseInt(PropertiesUtil.getProperty("radis.max.idle","10"));//在jedispool中最大的idle状态(空闲的)jedis实例的个数
    private static Integer minIdle = Integer.parseInt(PropertiesUtil.getProperty("redis.min.idle","2"));//在jedispool中最小的idle状态(空闲的)jedis实例的个数
    private static Boolean testOnBorrow = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.borrow","true"));//在borow一个jedis实例的时候，是否要进行验证操作，如果赋值true，则得到的jedis实例肯定是可以用的。
    private static Boolean testOnReturn = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.return","true"));//在return一个jedis实例的时候，是否要进行验证操作，如果赋值true，则放回的jedis实例肯定是可以用的。
    private static String redisIp = PropertiesUtil.getProperty("redisIp");
    private static Integer redisPort = Integer.parseInt(PropertiesUtil.getProperty("redisPort"));

    private static void initPool(){
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        jedisPoolConfig.setMaxTotal(maxTotal);
        jedisPoolConfig.setMaxIdle(maxIdle);
        jedisPoolConfig.setMinIdle(minIdle);
        jedisPoolConfig.setTestOnBorrow(testOnBorrow);
        jedisPoolConfig.setTestOnReturn(testOnReturn);

        jedisPoolConfig.setBlockWhenExhausted(true);//连接耗尽的时候，是否阻塞，false会抛出异常，true阻塞直到超时。默认true

        pool = new JedisPool(jedisPoolConfig,redisIp,redisPort,1000*20);
    }

    //类加载的时候初始化连接池
    static {
        initPool();
    }

    public static Jedis getJedis() {
        return pool.getResource();
    }

    public static void returnResource(Jedis jedis) {
        pool.returnResource(jedis);
    }

    public static void returnBrokenResource(Jedis jedis) {
        pool.returnBrokenResource(jedis);
    }

    public static void main(String[] args) {
        Jedis jedis = pool.getResource();
        jedis.set("man","jackie");
        jedis.set("Lidy","jiajia");
        pool.returnResource(jedis);

        pool.destroy();
        System.out.println("program is over.");


    }

RedisPoolUtil.java

package com.jmall.util;

import com.jmall.common.RedisPool;
import lombok.extern.slf4j.Slf4j;
import redis.clients.jedis.Jedis;

/**
 * @Author: jackie
 * @Date: 2018/12/22 18:51
 * @Version 1.0
 */
@Slf4j
public class RedisPoolUtil {

    public static String set(String key,String value) {
        Jedis jedis = null;
        String result = null;
        try {
            jedis = RedisPool.getJedis();
            result = jedis.set(key,value);
        } catch (Exception e) {
            log.error("set key:{},value:{} error",key,value,e);
            RedisPool.returnBrokenResource(jedis);
            return result;
        }
        RedisPool.returnResource(jedis);
        return result;
    }

    //exTime 单位秒
    public static String setEx(String key,String value,int exTime) {
        Jedis jedis = null;
        String result = null;
        try {
            jedis = RedisPool.getJedis();
            result = jedis.setex(key,exTime,value);
        } catch (Exception e) {
            log.error("setEx key:{},value:{} error",key,value,e);
            RedisPool.returnBrokenResource(jedis);
            return result;
        }
        RedisPool.returnResource(jedis);
        return result;
    }

    public static String get(String key) {
        Jedis jedis = null;
        String result = null;
        try {
            jedis = RedisPool.getJedis();
            result = jedis.get(key);
        } catch (Exception e) {
            log.error("get key:{} error",key,e);
            RedisPool.returnBrokenResource(jedis);
            return result;
        }
        RedisPool.returnResource(jedis);
        return result;
    }


    public static Long del(String key) {
        Jedis jedis = null;
        Long result = null;
        try {
            jedis = RedisPool.getJedis();
            result = jedis.del(key);
        } catch (Exception e) {
            log.error("del key:{} error",key,e);
            RedisPool.returnBrokenResource(jedis);
            return result;
        }
        RedisPool.returnResource(jedis);
        return result;
    }

    /**
     * 设置key的有效期，单位是秒
     * @param key
     * @param seconds
     * @return
     */
    public static Long expire(String key,int seconds) {
        Jedis jedis = null;
        Long result = null;
        try {
            jedis = RedisPool.getJedis();
            result = jedis.expire(key,seconds);
        } catch (Exception e) {
            log.error("expire key:{} error",key,e);
            RedisPool.returnBrokenResource(jedis);
            return result;
        }
        RedisPool.returnResource(jedis);
        return result;
    }




    public static void main(String[] args) {
        RedisShardedPoolUtil.set("keyTest", "value");
        String value = RedisShardedPoolUtil.get("keyTest");
        RedisShardedPoolUtil.setEx("keyEx", "valueEx", 60 * 10);
        RedisShardedPoolUtil.expire("keyTest", 60 * 10);
        RedisShardedPoolUtil.del("keyTest");

        System.out.println("game over!!");





    }

}

}