自定义防止重复提交注解@PreventDuplicateSubmit，Spring Aop-优快云博客

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.TYPE})
public @interface PreventDuplicateSubmit {
    /** 请求间隔时间，单位秒，该时间范围内的请求为重复请求 */
    int intervalTime() default 1;
    /** 返回的提示信息 */
    String msg() default "请不要频繁重复请求！";
}

@Component
public class PreventDuplicateSubmitCache {

    /**
     * 重复提交缓存
     */
    public static final Map<Date, String> REPEAT_REQUEST = new HashMap<>();

    /**
     * 向缓存中存入数据
     *
     * @param key
     * @param value
     */
    public void add(Date key, String value) {
        REPEAT_REQUEST.put(key, value);
    }

}

@Component
@Aspect
@Order(100)
public class PreventDuplicateSubmitHandler {
    @Resource
    private PreventDuplicateSubmitCache requestCache;

    // 定义注解类型的切点
    @Pointcut("@annotation(fish.api.server.security.PreventDuplicateSubmit)")
    public void arrPointcut() {
    }

    // 实现过滤重复请求功能
    @Around("arrPointcut()")
    public Object arrBusiness(ProceedingJoinPoint joinPoint) {

        // 获取 map value，由 session id 和 请求URI 构成
        ServletRequestAttributes sra = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
        HttpServletRequest request = sra.getRequest();
        String value = request.getSession().getId() + "_" + request.getRequestURI();

        // 获取方法的 AvoidRepeatRequest 注解
        Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
        PreventDuplicateSubmit arr = method.getAnnotation(PreventDuplicateSubmit.class);

        // 判断是否是重复的请求
        Date now = new Date();
        requestCache.add(now, value);
        List<Date> list = new ArrayList<>();
        Map<Date, String> map = PreventDuplicateSubmitCache.REPEAT_REQUEST;
        for (Map.Entry<Date, String> entry : map.entrySet()) {
            if (entry.getKey().equals(now) && entry.getValue().equals(value)) {
                continue;
            }
            list.add(entry.getKey());
            //传入的时间和原本时间的差值（秒）
            int difference = (int) (now.getTime() - entry.getKey().getTime()) / 1000;
            //如果时间差小于设定值为重复提交
            if (difference < arr.intervalTime()) {
                return new Result<>(902, arr.msg());
            }
        }
        //删除之前的数据
        if (CollUtil.isNotEmpty(list)) {
            list.forEach(map::remove);
        }


        try {
            // 非重复请求，执行业务代码
            return joinPoint.proceed();
        } catch (Throwable throwable) {
            throwable.printStackTrace();
            return ("error");
        }
    }

}

应用