<%@ page import="java.util.Date"%>
<%	
String User = (String) session.getAttribute("User");
//從session對象中取得名稱為User的資料

//判斷session對象中的User資料, 是否為空值, 是則代表用戶尚未完成登錄
if(User == null)   
	response.sendRedirect("LogFrm.jsp"); //將瀏覽器導向至登錄網頁

String Msg = null; 

//下面的for循環將把每個信息向后移動
for(int i = 40; i >= 2; i--)
{
	Msg = (String)application.getAttribute("Msg" + (i - 1));
	application.setAttribute("Msg" + i, Msg);
}

Date Now = new Date(); //取得目前的系統時間
String year = String.valueOf(Now.getYear() + 1900);
String month = String.valueOf(Now.getMonth() + 1);
String day = String.valueOf(Now.getDate());
String hour = String.valueOf(Now.getHours());
String minute = String.valueOf(Now.getMinutes());
String second = String.valueOf(Now.getSeconds());

String time = year + "/" + month + "/" + day + " "
	      + hour + ":" + minute + ":" + second;
//取得目前的日期與時間

Msg = "<TD><IMG SRC = images/" + session.getAttribute("Sex") +
      ".gif></TD><TD><Font Size=4 Color = Gray><B>" +
      session.getAttribute("User") + "</B></Font></TD>" +
      "<TD width = 300><Font Size=4><B>說:" + 
      request.getParameter("Msg") + "</B></FONT></TD>" +
      "<TD><Font Size=4 Color = Red>[" + time + "]</Font></TD>";
//設置新信息字串

application.setAttribute("Msg1", Msg);
//設置新信息

response.sendRedirect("chat.jsp");
//將子窗口導向回到用于顯示信息的chat.jsp
%>