<%@ page language="java" import="java.util.*,cn.com.Person" pageEncoding="UTF-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>JSTLandEl</title> <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--> </head> <body> <% ArrayList list=new ArrayList(); list.add(new Person("wy")); list.add(new Person("wyy")); list.add(new Person("wyyy")); request.setAttribute("list", list); %> <!-- 集合帶過來的資料怎麼遍曆呢？用到了JSTL --> <c:forEach var="person" items="${list}"> ${person.name} </c:forEach> <br/> <% Map map=new HashMap(); map.put("1", new Person("aaaa")); map.put("b", new Person("bbbb")); map.put("c", new Person("cccc")); map.put("d", new Person("dddd")); request.setAttribute("map", map); %> <c:forEach var="entry" items="${map}"> ${entry.key }:${entry.value.name} <br/> </c:forEach> <!-- 測試標籤 --> <c:if test="${user!=null}"> 歡迎您：${user.username} </c:if> <c:if test="${user==null}"> 使用者名稱：<input type="text"> 密碼：<input type="password"> </c:if> </body></html>
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