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    /**
     * 獲取分佈式鎖
     */
    public boolean getLock(Jedis jedis,String lockKey,String requestId,int expireTime){
        Long result = jedis.setnx(lockKey, requestId);
        if(result==1){
            jedis.expire(lockKey,expireTime);
            return true;
        }
        return false;
    }

    /**
     * 釋放鎖
     */
    public boolean unlock(Jedis jedis,String lockKey,String requestId){
        if(requestId.equals(jedis.get(lockKey))){
            jedis.del(lockKey);
            return true;
        }
        return false;
    }