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：
