防止重复调用

 前段防重

在前段设置状态在响应时进入遮罩层或给按钮一个状态

后端防重

   //获取setNX锁
        if (redisTemplate.opsForValue().setIfAbsent("lock", orderId)) {
            //获取锁成功
            try {
                //Redission 获取锁
                RLock lock = redissonClient.getLock("lock");
                boolean acquired = lock.tryLock(10, TimeUnit.SECONDS); // 尝试获取锁，最多等待10秒
                if (acquired) {
                    try {
                        // 执行业务逻辑
 
                    } finally {
                        lock.unlock(); // 记得解锁
                    }
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            } finally {
                //删除锁
                redisTemplate.delete("lock");
            }
        }