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2020-02-13 2841620be623be15c1832a783136a2b73c2b4424

 ruoyi/src/main/java/com/ruoyi/framework/interceptor/RepeatSubmitInterceptor.java

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package com.ruoyi.framework.interceptor;

import java.lang.reflect.Method;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import com.alibaba.fastjson.JSONObject;
import com.ruoyi.common.utils.ServletUtils;
import com.ruoyi.framework.interceptor.annotation.RepeatSubmit;
import com.ruoyi.framework.web.domain.AjaxResult;

/**
 * é˜²æ­¢é‡å¤æäº¤æ‹¦æˆªå™¨
 * 
 * @author ruoyi
 */
@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, JSONObject.toJSONString(ajaxResult));
                    return false;
                }
            }
            return true;
        }
        else
        {
            return super.preHandle(request, response, handler);
        }
    }

    /**
     * éªŒè¯æ˜¯å¦é‡å¤æäº¤ç”±å­ç±»å®žçŽ°å…·ä½“的防重复提交的规则
     * 
     * @param httpServletRequest
     * @return
     * @throws Exception
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request);
}