解决中文乱码问题

package com.abc.zp.filter;

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

public class EncodingFilter implements Filter
{
public void init(FilterConfig filterConfig)
          throws ServletException
{
//System.out.println("过滤器初始化*****");
}
public void doFilter(ServletRequest request,
              ServletResponse response,
              FilterChain chain)
              throws IOException,
                     ServletException
{
try
{
request.setCharacterEncoding("gbk");
}
catch (Exception e)
{
}
chain.doFilter(request,response); }
public void destroy()
{
System.out.println("过滤器销毁******");
}
}