JSP用过滤器解决requestgetParameter中文乱码问题

package my; 

import java.io.*; 
import javax.servlet.*; 
import javax.servlet.http.*; 

public class ChineseFilter implements Filter { //定义了一个过滤器 实现Filter接口 

private FilterConfig cOnfig= null; 

public void init(FilterConfig config) throws ServletException { 
this.cOnfig= config; 
} 

public void destroy() { 
cOnfig= null; 
} 

public void doFilter(ServletRequest request, ServletResponse response, 
FilterChain chain) throws IOException, ServletException 
{ 
request.setCharacterEncoding("GB2312"); 
chain.doFilter(request, response); //把过滤后的request对象转发给下一个过滤器处理 
} 
}

 
cf 
my.ChineseFilter 
 
 
cf 
/* 
REQUEST 
FORWARD 
INCLUDE 

<%@ page cOntentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %> 
 
 
 
 
 
 

 
<% 
String s=request.getParameter("data"); 
out.print(s); 
%>