中文乱码过滤器web.xml中

1.

注意乱码过滤器要写在struts2过滤器之前，因为servlet是按照filter的声明先后顺序来执行过滤的

 <!-- 中文乱码过滤器 -->

  <filter>

            <filter-name>encodeFilter</filter-name>

            <filter-class>com.kingback.mile.encoding.EncodeFilter</filter-class>

            <init-param>

                <param-name>encoding</param-name>

                <param-value>UTF-8</param-value>

            </init-param>

 </filter>

 <filter-mapping>

            <filter-name>encodeFilter</filter-name>

            <url-pattern>/*</url-pattern>

 </filter-mapping>







2.

在com.kingback.mile.encoding下建一个EncodeFilter类

package com.kingback.mile.encoding;



import java.io.IOException;



import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;



import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter;



public class EncodeFilter extends StrutsPrepareAndExecuteFilter implements Filter   {

	 private FilterConfig config = null;

     private String encoding = "UTF-8";

     

     @Override

     public void init(FilterConfig config) throws ServletException {

        this.config = config;

     }

     

     @Override

     public void doFilter(ServletRequest request, ServletResponse response,

            FilterChain chain) throws IOException, ServletException {

         if (encoding == null) {

             encoding = config.getInitParameter("encoding");

            }

            request.setCharacterEncoding(encoding);

            response.setCharacterEncoding(encoding);<