字符编码过滤器

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;

public class SetEncodingFilter implements Filter {

    public void destroy() {
        // TODO Auto-generated method stub
        
    }   
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        // TODO Auto-generated method stub
        request.setCharacterEncoding("gbk");
        response.setCharacterEncoding("gbk");
        chain.doFilter(request, response);
    }

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

}