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");}}
