<%@page import="de.bvb.domain.Person"%>
<%@page import="de.bvb.domain.Address"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jstl 和 el表达式</title>
</head>
<body>
输出应用名 ${pageContext.request.contextPath }
<br />输出八种基本数据类型:
<%
String data = "data";
request.setAttribute("data", data);
%>
${data }
<br />输出一个对象的字段:
<%
Person person = new Person("腾讯");
person.setAddress(new Address("深圳"));
request.setAttribute("person", person);
%>
${person.name } ${person['name'] } ${person.address.city }
<br />输出list中的一个数据(只能通过下标获取):
<%
List<Person> list = new ArrayList<Person>();
list.add(new Person("aaa"));
list.add(new Person("bbb"));
list.add(new Person("ccc"));
request.setAttribute("list", list);
%>
${list[0].name }
<br />输出map中的一个数据:
<%
Map<String, Person> map = new HashMap<String, Person>();
map.put("aa", new Person("aaa"));
map.put("bb", new Person("bbb"));
map.put("cc", new Person("ccc"));
request.setAttribute("map", map);
%>
${map.aa.name } ${map['bb'].name }
<br />
<br />遍历 list :
<c:forEach items="${list }" var="p">
<br />${p.name }
</c:forEach>
<br />
<br /> 遍历 map :
<c:forEach items="${map }" var="m">
<br />${m.key } ==> ${m.value.name }
</c:forEach>
</body>
</html>
