---servlet 文件

package com.encoding;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

 
public class Encoding  implements javax.servlet.Filter {

     public void destroy() {
          / / TODO Auto-generated method stub
     }

     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
          request .setCharacterEncoding("GBK");
          chain.doFilter(request, response);
     }

     public void init(FilterConfig arg0) throws ServletException {
          // TODO Auto-generated method stub
     }
}

---XML配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
     
   <!-- 中文乱码过滤处理 -->
    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>
            com.encoding;.Encoding
        </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
 
</web-app>

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