appendfilter.java

关于servlet的很全的例子,对学习servlet很有帮助的,大家

package com.allanlxf.filter;

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

public class AppendFilter implements Filter
{
    private FilterConfig config;
    
    public void init(FilterConfig config) throws ServletException
    {
        this.config = config;
    }
    
    public void doFilter(ServletRequest request, ServletResponse response,
                   FilterChain chain) throws IOException, ServletException
    {
        MyResponse myRes = new MyResponse((HttpServletResponse)response);
        chain.doFilter(request, myRes);
        String content = myRes.getServletOutput();
        response.getWriter().println(content + config.getInitParameter("greetingString"));
    }
    
    public void destroy()
    {
    }
}