chatservlet.java

来自「Ajax,聊天小程序.十分实用的教学小程序. Ajax, chat app」· Java 代码 · 共 44 行

package lee;

import javax.servlet.ServletException;
import javax.servlet.ServletContext;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.PrintWriter;
import java.io.IOException;

/*
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class ChatServlet  extends HttpServlet
{
    public void service(HttpServletRequest request,HttpServletResponse response)
        throws IOException,ServletException
	{
        request.setCharacterEncoding("GBK");
        String msg = request.getParameter("chatMsg");
        if ( msg != null &&  !msg.equals(""))
        {
            String user = (String)request.getSession(true).getAttribute("user");
            ChatService.instance().addMsg(user , msg);
        }
        request.setAttribute("msg" , ChatService.instance().getMsg());
        forward("/chat.jsp" , request , response);
	}

    public void forward(String url , HttpServletRequest request,HttpServletResponse response)
        throws ServletException,IOException
    {
        ServletContext sc = getServletConfig().getServletContext();
        RequestDispatcher rd = sc.getRequestDispatcher(url);
        rd.forward(request,response);
    }
}