update

whycrzg

2021-02-23 351b9a53cb9ecebdf8f79db0117f540d9c42c2a4

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package com.fgkj.Filters;
 
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
 
public class Encroding implements Filter{
 
        
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=utf-8");
        //System.out.println("编码修改成功");        
        HttpServletRequest req = (HttpServletRequest)request;
        //解决安全性问题：跨站点请求伪造
        String referer = req.getHeader("Referer");   //REFRESH  
        String serverName = req.getServerName();
        if(null != referer&&referer.indexOf(serverName) < 0){            
            req.getRequestDispatcher(req.getRequestURI()).forward(req, response);  
        }
        chain.doFilter(request, response);
    }
 
    public void init(FilterConfig arg0) throws ServletException {
        
    }
 
    public void destroy() {
        
    }
}