?? viewcart.jsp
字號:
<?xml version = "1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- viewCart.jsp -->
<%-- JSP page settings --%>
<%@ page language = "java" session = "true" %>
<%@ page import = "com.deitel.advjhtp1.store.*" %>
<%@ page import = "java.util.*" %>
<%@ page import = "java.text.*" %>
<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title>Shopping Cart</title>
<link rel = "stylesheet" href = "styles.css"
type = "text/css" />
</head>
<body>
<p class = "bigFont">Shopping Cart</p>
<%-- start scriptlet to display shopping cart contents --%>
<%
Map cart = ( Map ) session.getAttribute( "cart" );
double total = 0;
if ( cart == null || cart.size() == 0 )
out.println( "<p>Shopping cart is currently empty.</p>" );
else {
// create variables used in display of cart
Set cartItems = cart.keySet();
Iterator iterator = cartItems.iterator();
BookBean book;
CartItemBean cartItem;
int quantity;
double price, subtotal;
%> <%-- end scriptlet for literal XHTML output --%>
<table>
<thead><tr>
<th>Product</th>
<th>Quantity</th>
<th>Price</th>
<th>Total</th>
</tr></thead>
<% // continue scriptlet
while ( iterator.hasNext() ) {
// get book data; calculate subtotal and total
cartItem = ( CartItemBean ) cart.get( iterator.next() );
book = cartItem.getBook();
quantity = cartItem.getQuantity();
price = book.getPrice();
subtotal = quantity * price;
total += subtotal;
%> <%-- end scriptlet for literal XHTML and --%>
<%-- JSP expressions output from this loop --%>
<%-- display table row of book title, quantity, --%>
<%-- price and subtotal --%>
<tr>
<td><%= book.getTitle() %></td>
<td><%= quantity %></td>
<td class = "right">
<%=
new DecimalFormat( "0.00" ).format( price )
%>
</td>
<td class = "bold right">
<%=
new DecimalFormat( "0.00" ).format( subtotal )
%>
</td>
</tr>
<% // continue scriptlet
} // end of while loop
%> <%-- end scriptlet for literal XHTML and --%>
<%-- display table row containing shopping cart total --%>
<tr>
<td colspan = "4" class = "bold right">Total:
<%= new DecimalFormat( "0.00" ).format( total ) %>
</td>
</tr>
</table>
<% // continue scriptlet
// make current total a session attribute
session.setAttribute( "total", new Double( total ) );
} // end of else
%> <%-- end scriptlet --%>
<!-- link back to books.jsp to continue shopping -->
<p class = "bold green">
<a href = "books.jsp">Continue Shopping</a>
</p>
<!-- form to proceed to checkout -->
<form method = "get" action = "order.html">
<p><input type = "submit" value = "Check Out" /></p>
</form>
</body>
</html>
<!--
***************************************************************
* (C) Copyright 2001 by Deitel & Associates, Inc. and *
* Prentice Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have *
* used their best efforts in preparing the book. These *
* efforts include the development, research, and testing of *
* the theories and programs to determine their effectiveness. *
* The authors and publisher make no warranty of any kind, *
* expressed or implied, with regard to these programs or to *
* the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for *
* incidental or consequential damages in connection with, or *
* arising out of, the furnishing, performance, or use of *
* these programs. *
***************************************************************
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