request属性范围表示在服务器跳转后，所有设置的内容依然会被保留下来。（服务器端跳转：页面跳转，地址栏不发生变化）
下面写个小例子测试下：
(1)request_demo.jsp
1 <%@ page contentType="text/html; charset=utf-8" language="java" errorPage="" %>
2 <%@ page import="java.util.*"%>
3 <!doctype html>
4 <html>
5 <head>
6 <meta charset="utf-8">
7 <title>page属性范围</title>
8 </head>
9
10 <body>
11 <%
12 request.setAttribute("name","ninic");
13 request.setAttribute("birthday",new Date());
14 %>
15 <jsp:forward page="request_demo2.jsp"/>
16 </body>
17 </html>
(2)request_demo2.jsp
1 <%@ page contentType="text/html; charset=utf-8" language="java" import="java.util.*" errorPage="" %>
2 <!doctype html>
3 <html>
4 <head>
5 <meta charset="utf-8">
6 <title>无标题文档</title>
7 </head>
8
9 <body>
10 <%
11 String username=(String)request.getAttribute("name");
12 Date userbirthday=(Date)request.getAttribute("birthday");
13 %>
14 <h2>姓名：<%=username%></h2>
15 <h2>生日：<%=userbirthday%></h2>
16 </body>
17 </html>
浏览器中显示：
时间： 2024-10-13 11:56:08