package com.fr.privilege;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class UrlVerificationFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        //TODO
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
    	 System.out.println("=======================================2020 begin==============================================");
    	
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String referer = request.getHeader("referer");
        System.out.println("referer:"+referer);
        //下面的IP地址是正常页面请求
        if(null != referer && (referer.trim().startsWith("http://localhost:8075")||referer.trim().startsWith("https://tms.e6yun.com/waybillNew/WaybillExtend/WaybillSign"))){
            System.out.println("正常的页面请求"+referer);
            filterChain.doFilter(request,response);
        }else{
            System.out.println("请求地址被篡改，中断请求"+referer);
            request.getRequestDispatcher("www.baidu.com").forward(request,response);
        }
         System.out.println("=======================================2020 end==============================================");
    }

    @Override
    public void destroy() {

    }
}