获取域中存储List集合和Map集合的值
list集合:${域名称.键名[索引]}
jsp代码
<%@ page import="java.util.ArrayList" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>获取域中存储List集合的值</title>
</head>
<body>
<%
ArrayList list = new ArrayList();
list.add("aaa");
list.add("bbb");
request.setAttribute("list",list);
%>
<h3>获取List集合的值</h3>
${list}<br>
${list[0]}<br>
${list[1]}<br>
</body>
</html>
运行结果
map集合:
${域名称.键名.key名称}
${域名称.键名[key名称]}
jsp代码
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.Map" %>
<%@ page import="java.util.HashMap" %>
<%@ page import="com.bai.dao.User" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>获取域中存储map集合的值</title>
</head>
<body>
<%
Map map=new HashMap();
map.put("sname","李四");
map.put("gender","男");
request.setAttribute("map",map);
%>
<h3>获取map集合的值</h3>
${map.gender}<br>
${map["gender"]}<br>
</body>
</html>
运行结果
