chatservlet.java

用ajax技术实现的简单的j2ee聊天室

package servlet;

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

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

public class ChatServlet extends HttpServlet {
	public void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
		request.setCharacterEncoding("UTF-8");
		String msg = request.getParameter("chatMsg");
//		System.out.println(msg);
		if(msg != null && !msg.equals("")){
//			String user = (String)request.getSession().getAttribute("user");
			String user = "TWO";
			ChatService.instance().addMsg(user,msg);
		}
		response.setContentType("text/html;charset=GBK");
		PrintWriter  out = response.getWriter();
		out.println(ChatService.instance().getMsg());
	}
}