iplogservlet.java

关于servlet的很全的例子,对学习servlet很有帮助的,大家

package com.allanlxf.serv.basic;

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

public class IPLogServlet extends HttpServlet
{
    private PrintWriter logger;
    
    public void init() throws ServletException
    {
        try
        {
            FileOutputStream fout = new FileOutputStream(getInitParameter("filename") ,true);
            logger = new PrintWriter(fout);
        }catch(IOException e)
        {
            e.printStackTrace();
            throw new ServletException("init failed!");
        }
    }
    
    public void doGet(HttpServletRequest request, HttpServletResponse response)
                        throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println(request.getRemoteAddr());
        out.println(getInitParameter("filename"));
        out.close();
        synchronized(this)
        {
            logger.print(new java.util.Date());
            logger.print(":");
            logger.println(request.getRemoteAddr());
        }
    }
    
    public void doPost(HttpServletRequest request, HttpServletResponse response)
                        throws IOException, ServletException
    {
        doGet(request, response);
    }
    
    public void destroy()
    {
        logger.close();
    }
}