基于RedisTemplate实现简单redis分布式锁

@Slf4j
public class RedisLock {


    private String key;

    private long timeout = 2;

    private TimeUnit unit = TimeUnit.MINUTES;

    private int tryNum = 0;

    private int tryNumLimit = 0;

    private String uuid;

    private RedisTemplate<String,Object> redisTemplate;

    public void setTryNumLimit(int tryNumLimit) {
        this.tryNumLimit = tryNumLimit;
    }

    public RedisLock(String key) {
        this.key = key;
        redisTemplate = SpringContextUtil.getBean("redisTemplate");
        uuid = UUIDUtil.getUUID32();
    }

    public RedisLock(String key, long timeout, TimeUnit unit) {
        this.key = key;
        this.timeout = timeout;
        this.unit = unit;
        redisTemplate = SpringContextUtil.getBean("redisTemplate");
        uuid = UUIDUtil.getUUID32();
    }

    public RedisLock(String key, long timeout, TimeUnit unit, int tryNum) {
        this.key = key;
        this.timeout = timeout;
        this.unit = unit;
        this.tryNum = tryNum;
        redisTemplate = SpringContextUtil.getBean("redisTemplate");
        uuid = UUIDUtil.getUUID32();
    }

    public boolean tryLock(){
        if (tryNumLimit != 0 && ++tryNum > tryNumLimit){
            throw new CheckedException("系统繁忙，请稍后再试");
        }
        return redisTemplate.opsForValue().setIfAbsent(key,this.uuid,timeout, unit);
    }

    public void unLock(){
        Object o = redisTemplate.opsForValue().get(key);
        if (o != null && this.uuid.equals((String)o)){
            redisTemplate.delete(key);
        }else {
            log.info("不是当前对象持有锁，无法释放");
        }
    }


}