jsp1
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>session測試</title>
</head>
<body>
<form method="post" name="form">
<table>
<tr>
<td>
使用者名稱：<input type="text" name="user">
</td>
</tr>
</table>
</form>
<%
String user=request.getParameter("user");
session.setAttribute("user",user);
%>
</body>
</html>
jsp2
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" import="java.lang.Math"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>admin</title>
</head>
<body>
<form method="post" name="form">
<table>
<tr>
<td>
物品名稱：<input type="text" name="user">
</td>
</tr>
</table>
<%
String user=request.getParameter("user");
session.setAttribute("name",user);
%>
</form>
</body>
</html>
jsp3
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" import="java.lang.Math"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>static</title>
</head>
<body>
<form method="post" name="form">
<table>
<tr>
<td>
<input type="submit" name="submit" value="下單">
</td>
</tr>
</table>
使用者名稱：<%=session.getAttribute("user") %><br>
商品名稱：<%=session.getAttribute("name") %>
</body>
</html>
三個頁面為獨立的頁面，彼此不傳遞資料
1和2都將資料儲存到session中
3讀取session中的資料
執行截圖
1
2
3
