📄 cart.jsp
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<!--cart.jsp-->
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.util.*"%>
<%@ page import="chapter9.CartBean"%>
<%!
public String codeString(String s){
String str=s;
try{
byte b[]=str.getBytes("ISO-8859-1");
str=new String (b);
return str;
}catch(Exception e){
return "error";
}
}
%>
<jsp:useBean id="cart" class="chapter9.CartBean" scope="session"/>
<html>
<head>
<title>Cart</title>
</head>
<body bgcolor="#C0C0C0">
<center>
<h1>您的购物车</h1>
<%
String submit=request.getParameter("submit");
if(submit==null)submit="";
submit=codeString(submit);
if(submit.equals("删除")){
cart.removeItem(codeString(request.getParameter("hidden")));
}
else if(submit.equals("更改")){
String[]item={codeString(request.getParameter("hidden")),"",codeString(request.getParameter("text"))};
cart.reItem(item);
}
%>
<table width="800" bgcolor="#C0C0C0" border="1">
<tr>
<table width="800" border="1">
<td width="200" valign="middle" align="center">品名</td>
<td width="200" valign="middle" align="center">删除</td>
<td width="200" valign="middle" align="center">数量</td>
<td width="200" valign="middle" align="center">重置</td>
<table>
</tr>
<%
Enumeration enum =cart.getEnumeration();
String []item;
while(enum.hasMoreElements()){
item=(String [])enum.nextElement();
%>
<tr>
<table width="800" border="1">
<form action="cart.jsp" method="post" name="form<%=item[0]%>">
<td width="200" valign="middle" align="center"><%=item[0]%></td>
<td width="200" valign="middle" align="center">
<input type=submit name="submit" value="删除"></td>
<td width="200" valign="middle" align="center">
<input type=text maxlength=2 name="text" size="4" value="<%=item[2]%>"></td>
<td width="200" valign="middle" align="center">
<input type=submit name="submit" value="更改"></td>
<input type=hidden name="hidden" value="<%=item[0]%>">
</form>
</table>
</tr>
<%
}
%>
</table>
<br>
<a href="list.jsp">返回</a>
<a href="check.jsp">结帐</a>
</center>
</body>
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