测试文章

正文标题

一段代码

/**
 * 可重入锁
 */
@RequestMapping("lock")
public void lock() {
    RLock lock = redissonClient.getLock("lock");
    try {
        lock.lock(3, TimeUnit.SECONDS);
        System.out.println("lock...");
        String s = redisTemplate.opsForValue().get("num");
        if (s != null) {
            int num = Integer.parseInt(s);
            num ++;
            redisTemplate.opsForValue().set("num", Integer.toString(num));
        }
    } finally {
        if (lock.isHeldByCurrentThread() && lock.isLocked()) {
            lock.unlock();
        }
        System.out.println("unlock...");
    }
    
}