<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.util.*, org.it315.UserBean" %>
<%
	Collection users = new ArrayList();
	for(int i=0; i<5; i++)
	{
		UserBean user = new UserBean();
		user.setUserName("user" + i);
		user.setPassword("guest" + i);
		users.add(user);
	}
	session.setAttribute("users", users);
%>
There are ${fn:length(users)} users online.<hr />
字符串“www.it315.org”中包含 ${fn:length("www.it315.org")} 個字符