基于ajax的web聊天室

package cn.owntt.web.servlet; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import cn.owntt.entity.Message; public class SenderServlet extends HttpServlet{ @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); response.setCharacterEncoding("utf-8"); String content=request.getParameter("content"); String to=request.getParameter("geter"); String isPrivate=request.getParameter("private"); String from=(String) request.getSession().getAttribute("nick"); String time=new SimpleDateFormat("HH:mm:ss").format(new Date()); Message message=new Message(); message.setTo(to); message.setFrom(from); message.setTime(time); message.setContent(content); if(isPrivate!=null)message.setPri(true);//悄悄话 //将消息存入容器 List<Message> list=(List<Message>) this.getServletContext().getAttribute("messages"); list.add(message); request.getRequestDispatcher("/chat/message.jsp").forward(request, response); } }