1，運作環境Tomacat8，JDBC驅動，Eclipse
2.首先制作商品購買頁面
這是開頭部分
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
meta标簽實作網頁功能
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'buy.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
顯示購買頁面
<body>
<table>
<tr><td>商品名稱</td><td>商品單價</td><td>購買</td></tr>
<form action="addCar.jsp" method="post">
<tr><td>手機</td><td>2000</td><td><input type="submit" name="buy" value="購買"/></td></tr>
<!-- 表單中通過隐藏域把參數偷偷傳給伺服器的目标頁面 -->
<input type="hidden" name="goodname" value="手機"/>
<input type="hidden" name="price" value="2000"/>
</form>
<form action="addCar.jsp" method="post">
<tr><td>ipad</td><td>2000</td><td><input type="submit" name="buy" value="購買"/></td></tr>
<input type="hidden" name="goodname" value="ipad"/>
<input type="hidden" name="price" value="2000"/>
</form>
<form action="addCar.jsp" method="post">
<tr><td>筆記本</td><td>2000</td><td><input type="submit" name="buy" value="購買"/></td></tr>
<input type="hidden" name="goodname" value="筆記本"/>
<input type="hidden" name="price" value="2000"/>
</form>
<form action="addCar.jsp" method="post">
<tr><td>硬碟</td><td>2000</td><td><input type="submit" name="buy" value="購買"/></td></tr>
<input type="hidden" name="goodname" value="硬碟"/>
<input type="hidden" name="price" value="2000"/>
</form>
</table>
<a href="chap4/addCar.jsp">檢視購物車</a>
</body>`在這裡插入代碼片`
</html>
如此制作完成的網頁打開如下圖
之後增加購物車處理頁面，做到可以檢視購物車
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@page import="java.util.ArrayList"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
String good=request.getParameter("goodname");
ArrayList car=null;
car=(ArrayList)session.getAttribute("car");
if(car==null){
car=new ArrayList();
if(good!=null && !good.isEmpty()){
car.add(good);
}
session.setAttribute("car", car);
}
else{
if(good!=null && !good.isEmpty()){
car.add(good);
}
session.setAttribute("car", car);
}
car=(ArrayList)session.getAttribute("car");
if(car!=null){
for(int i=0;i<car.size();i++){
out.print(car.get(i)+"<br/>");
}
}
%>
<a href="buy.jsp">繼續購物</a>
</body>
<html>
這樣可以實作對購物車的增删改查
![jsp+servlet實作學生宿舍管理系統p.s. 在實作學生宿舍管理系統之前，需要檢查資料庫連接配接jar包、jsp的jar包、servlet的jar包是否導入成功；檢查tomcat伺服器是否配置完成。[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)