redis 切面拦截 防重复提交

/**
 * aop 防止并发请求
 */
@Slf4j
@Aspect
@Component
public class LimitRequestAspect {
    @Autowired
    RedisHelper redisHelper;

    @Around("@annotation(limitRequest)")
    public Object around(ProceedingJoinPoint point, LimitRequest limitRequest) throws Throwable {
        HttpServletRequest request = ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getRequest();
        // 获取token，假设其在Authorization header中
        String token = request.getHeader("fleetToken");
        //将请求参数的哈希码、请求路径、请求方法作为防止重复提交的键
        String key = token + "-" + request.getRequestURI() + "-" + request.getMethod() + "-" + Arrays.hashCode(point.getArgs());
        long isSuccess = redisHelper.setnx(key,"0",limitRequest.lockTime());
        if (Objects.equals(isSuccess,0L)){
            throw new BusinessException("请求太过频繁，请稍后再试");
        }
        Object result;
        try {
            result = point.proceed();
        } finally {
            redisHelper.del(key);
        }
        return result;
    }
}