EL表达式

1.EL表达式

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>EL</title>
</head>
<body>
<%
    pageContext.setAttribute("uname","zhangsan");
    request.setAttribute("uname","lisi");
    session.setAttribute("uname","wangwu");
    application.setAttribute("uname","zhaoliu");
%>
<%--获取数据--%>
<%--会默认去范围最小的那个uname值--%>
获取域对象：${uname}<br>
<%--要想取特定范围的域对象的值--%>
page范围：${pageScope.uname}<br>
request范围：${requestScope.uname}<br>
session范围：${sessionScope.uname}<br>
application范围：${applicationScope.uname}<br>
</body>
</html>

posted on 2022-10-15 18:43 201812 阅读(21) 评论(0) 收藏举报