goods_form.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>欢迎光临购物车</title>
<style type="text/css">
h1 {
color: #F66;
}
</style>
</head>
<body>
<div align="center">
<h1> 欢迎光临购物车 </h1>
<form name="form1" method="post" action="goods_do.jsp" target="">
<table width="80%" border="0">
<tr>
<td width="50%" height="30" align="right"> 请选择您要购买的商品: </td>
<td width="50%" height="30" align="left">
<select name="GoodsName">
<option value="电脑" selected> 电脑 </option>
<option value="MP3"> MP3 </option>
<option value="MP4"> MP4 </option>
<option value="MP5"> MP5 </option>
<option value="MP6"> MP6 </option>
<option value="AK-47"> AK-47 </option>
<option value="巴雷特M95"> 巴雷特M95 </option>
<option value="加特林机枪"> 加特林机枪 </option>
<option value="手雷"> 手雷 </option>
<option value=" 鹰击-62巡航导弹"> 鹰击-62巡航导弹 </option>
<option value="美国大兵"> 美国大兵 </option>
<option value="基洛夫空艇"> 基洛夫空艇 </option>
<option value="旺仔qq糖"> 旺仔qq糖 </option>
<option value="品客薯片"> 品客薯片 </option>
<option value="洗衣机"> 洗衣机 </option>
<option value="电视机"> 电视机 </option>
</select></td>
</tr>
<tr>
<td width="50%" height="30" align="right"> 购买数量: </td>
<td width="50%" height="30" align="left">
<input type="text" name="GoodsNumber" value="1" size="5"></td>
</tr>
</table>
<p>
<input type="submit" name="sub" value="提交">
<input type="reset" name="res" value="重购">
</p>
</form>
</div>
</body>
</html>
goods_do.jsp
<%@ page contentType="text/html; charset=utf-8" language="java"%>
<%@ page import="java.util.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>欢迎光临购物车</title>
<jsp:useBean id="Goods" scope="session" class="com.demo.Goods" />
<style type="text/css">
td {
color: #333;
font-family: "微软雅黑", Verdana, sans-serif, "宋体";
width: 150px;
border-bottom-width: 1px;
border-bottom-style: dashed;
border-bottom-color: #999;
}
table {
width: 400px;
text-align: center;
margin-right: auto;
margin-left: auto;
border: 2px solid #666;
}
h1 {
color: #F66;
}
</style>
</head>
<%
//设置编码格式
request.setCharacterEncoding("utf-8");
//获取所要添加到购物车的商品名称和数量
String sGoodsName = request.getParameter("GoodsName");
String sGoodsNumber = request.getParameter("GoodsNumber");
//根据商品名称是否为空判断是否需要保存商品信息
if (sGoodsName != null && sGoodsName != "") {
int iGoodsNumber = Integer.parseInt(sGoodsNumber);
Goods.add(sGoodsName, iGoodsNumber);
}
//获取购物车对象信息
Hashtable h = Goods.show();
//获取购物车中所有商品名称
Enumeration e = h.keys();
//keys(),返回此哈希表中的键的枚举。
%>
<body>
<div align="center">
<h1>
欢迎光临购物车
</h1>
<p>
您的购物信息如下:
</p>
<table>
<%
while (e.hasMoreElements()) {
//根据商品名称获得相应商品数量
String sTemp = e.nextElement().toString();
int iTemp = ((Integer) h.get(sTemp)).intValue();
%>
<tr>
<td><%=sTemp%>:
</td>
<td><%=iTemp%></td>
<td>
<br>
<form action="goods_delete.jsp" method="post">
<input name="deleteName" type="hidden" value="<%=sTemp%>">
<input name="delete" type="submit" value="移除">
</form>
</td>
</tr>
<%
}
%>
</table>
<p>
<input type="button" name="goon" value="继续购物"
onClick="javascript:window.location='goods_form.html'">
</p>
</div>
</body>
</html>
goods_delete.jsp
<%@ page contentType="text/html; charset=utf-8" language="java"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>欢迎光临购物车</title>
<jsp:useBean id="Goods" scope="session" class="com.demo.Goods" />
</head>
<body>
<div align="center">
<h1>
欢迎光临购物车
</h1>
<%
request.setCharacterEncoding("utf-8");
//获取所要删除的商品名称
String sGoodsName = request.getParameter("deleteName");
//删除对应的商品信息
Goods.delete(sGoodsName);
//跳转当前页面
response.sendRedirect("goods_do.jsp");
%>
</div>
</body>
</html>
Goods.java
package com.demo;
import java.util.*;
import java.io.*;
/**
* 购物车
*
*/
public class Goods implements Serializable {
public Hashtable Goods = new Hashtable();
// 构造函数
public void Goods() {
}
// 将某个商品信息加入购物车
public void add(String GoodsName, int GoodsNumber) {
if (Goods.containsKey(GoodsName))
// containsKey,测试指定对象是否为此哈希表中的键。
{// 购物车中存在此商品
int iTemp = ((Integer) Goods.get(GoodsName)).intValue();
// intValue(),以 int 类型返回该 Integer 的值。
iTemp = iTemp + GoodsNumber;
Goods.put(GoodsName, new Integer(iTemp));
} else {// 购物车中不存在此商品
Goods.put(GoodsName, new Integer(GoodsNumber));
}
}
// 获取购物车中所有商品
public Hashtable show() {
return Goods;
}
// 从购物车中删除一件商品
public void delete(String GoodsName) {
int num = Integer.parseInt(Goods.get(GoodsName).toString()) - 1;
if (num == 0) {
Goods.remove(GoodsName);
} else {
Goods.put(GoodsName, num);
}
}
}
高级设计师
by: 神马 发表于:2012-10-07 21:19:52 顶(2) | 踩(6) 回复
忘记买薯片了
网友回复
回复time雨晨佳 : 怎么运行啊亲
顶(2) 踩(1) 2016-08-22 18:57:00
回复评论