redis-------分布式锁的实现方式

/**
 * redisTemplate 加锁
 * @param key
 * @return
 */
public boolean setNxLock(String lockKey, String value, int expireTime){
    boolean ret = false;
    try{
        String script = "if redis.call('setNx',KEYS[1],ARGV[1]) then if redis.call('get',KEYS[1])==ARGV[1] then return redis.call('expire',KEYS[1],ARGV[2]) else return 0 end end";


        RedisScript<Long> redisScript = new DefaultRedisScript<>(script, Long.class);


//            Object result = redisTemplate.execute(redisScript, (List<String>) new StringRedisSerializer(), Collections.singletonList(lockKey),value,expireTime + "");


        Object result = redisTemplate.execute(redisScript, Collections.singletonList(lockKey),value,expireTime + "");
        System.out.println(result + "-----------");
        if(SUCCESS.equals(result)) {
            return true;
        }
    }catch(Exception e){
        e.printStackTrace();
    }
    return ret;
}
/**
 * 释放锁
 * @param lockKey
 * @param value
 * @return
 */
public boolean releaseLock(String lockKey, String value){


    String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";


    RedisScript<Long> redisScript = new DefaultRedisScript<>(script, Long.class);


    Object result = redisTemplate.execute(redisScript, Collections.singletonList(lockKey),value);
    if(SUCCESS.equals(result)) {
        return true;
    }
    return false;
}