<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
My JSP 'right.jsp' starting page
<%
out.print("在线人数
");
String userName = (String) session.getAttribute("user");
List onlineUserList = (List) application.getAttribute("onlineUserList");
if (onlineUserList == null) {
onlineUserList = new ArrayList();
application.setAttribute("onlineUserList", onlineUserList);
}
if (onlineUserList.indexOf(userName) == -1)
onlineUserList.add(userName);
application.setAttribute("onlineUserList", onlineUserList);
List onlist = (List) application.getAttribute("onlineUserList");
for (int i = 0; i < onlist.size(); i++) {
String s = (String) onlist.get(i);
if(s!=null)
out.print(s+"
");
}
%>