Struts2中action接收中文参数为乱码解决方法

package org.filter;


import java.io.IOException;
import java.net.URLDecoder;
 
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class CharsetEncodingFilter implements Filter {
	
	@Override   
	public void doFilter(ServletRequest sRequest, ServletResponse sResponse,   
	        FilterChain filterChain) throws IOException, ServletException   
	{   
	    HttpServletRequest request = (HttpServletRequest) sRequest;   
	    HttpServletResponse response = (HttpServletResponse) sResponse;   
	    // 设置字符集   
	    request.setCharacterEncoding("utf-8");   
	    response.setCharacterEncoding("utf-8");   
	      
	    filterChain.doFilter(request, response);   
	}

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

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

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <!-- <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list> -->
  <!-- 过滤所有的请求的编码为utf-8 -->
  <filter>
    <filter-name>CharsetEncodingFilter</filter-name>
    <filter-class>org.filter.CharsetEncodingFilter</filter-class>
    
  </filter>
  <filter-mapping>
    <filter-name>CharsetEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  
  <filter>
      <filter-name>struts2</filter-name>
      <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
      <!-- <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> -->
  </filter>
  <filter-mapping>
  	<filter-name>struts2</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  
</web-app>