📄 changequantity.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<jsp:directive.page import="ss06.sl.pj3.*;"/>
<!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=GB2312">
<title>change</title>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
ArrayList shoppingcart = (ArrayList)session.getAttribute("shoppingcart");
Object cartlist[] = shoppingcart.toArray();
try{
for(int i = 0; i < cartlist.length; i++){
int quantity = Integer.parseInt(request.getParameterValues("quantity" + i)[0]);
if(quantity == 0)
shoppingcart.remove(i);
((ShoppingCart)cartlist[i]).setQuantity(quantity);
%>
<script language="javascript">
<!--
window.location = "shoppingcart.jsp";
//-->
</script>
<%
}
}catch(Exception e){
%>
<script language="javascript">
<!--
window.location = "shoppingcart.jsp";
//-->
</script>
<%
}
%>
</body>
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