使用@RepeatSubmit 防止重复提交

自定义防止重复提交的注解

	@Inherited
	@Target(ElementType.METHOD)
	@Retention(RetentionPolicy.RUNTIME)
	@Documented
	public @interface RepeatSubmit
	{
	
	}

防止重复提交的拦截器

@Component
	public abstract class RepeatSubmitInterceptor extends HandlerInterceptorAdapter
	{
	    @Override
	    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
	    {
	        if (handler instanceof HandlerMethod)
	        {
	            HandlerMethod handlerMethod = (HandlerMethod) handler;
	            Method method = handlerMethod.getMethod();
	            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
	            if (annotation != null)
	            {
	                if (this.isRepeatSubmit(request))
	                {
	                    AjaxResult ajaxResult = AjaxResult.error("不允许重复提交，请稍后再试");
	                    ServletUtils.renderString(response, JSON.marshal(ajaxResult));
	                    return false;
	                }
	            }
	            return true;
	        }
	        else
	        {
	            return super.preHandle(request, response, handler);
	        }
	    }
	
	    /**
	     * 验证是否重复提交由子类实现具体的防重复提交的规则
	     * 
	     * @param request
	     * @return
	     * @throws Exception
	     */
	    public abstract boolean isRepeatSubmit(HttpServletRequest request) throws Exception;
	}

判断请求url和数据是否和上一次相同，

*如果和上次相同，则是重复提交表单。 有效时间为10秒内

@Component
public class SameUrlDataInterceptor extends RepeatSubmitInterceptor
{
    public final String REPEAT_PARAMS = "repeatParams";

    public final String REPEAT_TIME = "repeatTime";

    public final String SESSION_REPEAT_KEY = "repeatData";

    /**
     * 间隔时间，单位:秒 默认10秒
     * 
     * 两次相同参数的请求，如果间隔时间大于该参数，系统不会认定为重复提交的数据
     */
    private int intervalTime = 10;

    public void setIntervalTime(int intervalTime)
    {
        this.intervalTime = intervalTime;
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean isRepeatSubmit(HttpServletRequest request) throws Exception
    {
        // 本次参数及系统时间
        String nowParams = JSON.marshal(request.getParameterMap());
        Map<String, Object> nowDataMap = new HashMap<String, Object>();
        nowDataMap.put(REPEAT_PARAMS, nowParams);
        nowDataMap.put(REPEAT_TIME, System.currentTimeMillis());

        // 请求地址（作为存放session的key值）
        String url = request.getRequestURI();

        HttpSession session = request.getSession();
        Object sessionObj = session.getAttribute(SESSION_REPEAT_KEY);
        if (sessionObj != null)
        {
            Map<String, Object> sessionMap = (Map<String, Object>) sessionObj;
            if (sessionMap.containsKey(url))
            {
                Map<String, Object> preDataMap = (Map<String, Object>) sessionMap.get(url);
                if (compareParams(nowDataMap, preDataMap) && compareTime(nowDataMap, preDataMap))
                {
                    return true;
                }
            }
        }
        Map<String, Object> sessionMap = new HashMap<String, Object>();
        sessionMap.put(url, nowDataMap);
        session.setAttribute(SESSION_REPEAT_KEY, sessionMap);
        return false;
    }

    /**
     * 判断参数是否相同
     */
    private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap)
    {
        String nowParams = (String) nowMap.get(REPEAT_PARAMS);
        String preParams = (String) preMap.get(REPEAT_PARAMS);
        return nowParams.equals(preParams);
    }

    /**
     * 判断两次间隔时间
     */
    private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap)
    {
        long time1 = (Long) nowMap.get(REPEAT_TIME);
        long time2 = (Long) preMap.get(REPEAT_TIME);
        if ((time1 - time2) < (this.intervalTime * 1000))
        {
            return true;
        }
        return false;
    }
}

配置拦截重复提交的请求

/**
     * 配置拦截重复提交的请求
     * @param registry
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry){
        registry.addInterceptor(repeatSubmitInterceptor).addPathPatterns("/**");
    }

转载链接：https://blog.csdn.net/weixin_43978032/article/details/109849067