Redis 連線池

public class RedisPool {
    private static JedisPool pool;//jedis連線池
    private static Integer maxTotal = ; //最大連線數
    private static Integer maxIdle = ;//在jedispool中最大的idle狀態(空閒的)的jedis例項的個數
    private static Integer minIdle = ;//在jedispool中最小的idle狀態(空閒的)的jedis例項的個數

    private static
 
 Boolean testOnBorrow = ;//在borrow一個jedis例項的時候，是否要進行驗證操作，如果賦值true。則得到的jedis例項肯定是可以用的。
    private static Boolean testOnReturn = ;//在return一個jedis例項的時候，是否要進行驗證操作，如果賦值true。則放回jedispool的jedis例項肯定是可以用的。

    private static String redisIp = ;
    private static Integer redisPort = ;


    private static void
 
 initPool(){
        JedisPoolConfig config = new JedisPoolConfig();

        config.setMaxTotal(maxTotal);
        config.setMaxIdle(maxIdle);
        config.setMinIdle(minIdle);

        config.setTestOnBorrow(testOnBorrow);
        config.setTestOnReturn(testOnReturn);

        config.setBlockWhenExhausted(true
 
);//連線耗盡的時候，是否阻塞，false會丟擲異常，true阻塞直到超時。預設為true。

        pool = new JedisPool(config,redisIp,redisPort,1000*2);
    }

    static{
        initPool();
    }

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


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



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

Redis 工具類

public class RedisPoolUtil {


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

    //exTime的單位是秒
    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 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;
    }

    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;
    }
}