// Get the user's session and shopping cart
HttpSession session = request.getSession(true);
ShoppingCart cart = (ShoppingCart)session.getAttribute("examples.bookstore.cart");
// If the user has no cart, create a new one
if (cart == null) {
cart = new ShoppingCart();
session.setAttribute("examples.bookstore.cart", cart);
}
// set content type header before accessing the Writer
response.setContentType("text/html");
PrintWriter out = response.getWriter();
//Print out the response
out.println("<html>" +
"<head><title>Your Shopping Cart</title></head>");
// Get the dispatcher; it gets the banner to the user
RequestDispatcher dispatcher =
getServletContext().getRequestDispatcher(
"/banner");
if (dispatcher != null)
dispatcher.include(request, response);
/* Handle any pending deletes from the shopping cart and
indicate the outcome as part of the response */
String bookId =request.getParameter("Remove");
if (bookId != null) {
cart.remove(bookId);
BookDetails book = bookDB.getBookDetails(bookId);
out.println("<font color=\"#ff00000\" size=\"+2\">" +
"You just removed: <strong>" + book.getTitle() +
"</strong> <br> <br>" +
"</font>");
} else if (request.getParameter("Clear") != null) {
cart.clear();
out.println("<font color=\"#ff0000\" size=\"+2\"><strong>" +
"You just cleared your shopping cart!" +
"</strong> <br> <br> </font>");
}
// Print a summary of the shopping cart
int num = cart.getNumberOfItems();
if (num > 0) {
out.println("<font size=\"+2\">" +
"You have " + num + (num==1 ? " item" : " items") +
" in your shopping cart" +
"</font><br> ");
// Return the Shopping Cart Nice and Pretty
out.println("<table>" +
"<tr>" +
"<th align=left>Quantity</TH>" +
"<th align=left>Title</TH>" +
"<th align=left>Price</TH>" +
"</tr>");
Iterator i = cart.getItems().iterator();
while (i.hasNext()) {
ShoppingCartItem item = (ShoppingCartItem) i.next();
BookDetails bookDetails = (BookDetails) item.getItem();
out.println("<tr>" +
"<td align=\"right\" bgcolor=\"#ffffff\">" +
item.getQuantity() +
"</td>" +
"<td bgcolor=\"#ffffaa\">" +
"<strong><a href=\"" +
response.encodeURL("/bookstore/bookdetails?bookId=" + bookDetails.getBookId()) +
"\">" + bookDetails.getTitle() + "</a></strong>" +
"</td>" +
"<td bgcolor=\"#ffffaa\" align=\"right\">" +
Currency.format(bookDetails.getPrice(), request.getLocale()) +
"</td>" +
"<td bgcolor=\"#ffffaa\">" +
"<strong>" +
"<a href=\"" +
response.encodeURL("/bookstore/showcart?Remove=" + bookDetails.getBookId()) +
"\">Remove Item</a></strong>" +
"</td></tr>");
}
// Print the total at the bottom of the table
out.println("<tr><td colspan=\"5\" bgcolor=\"#ffffff\">" +
"<br></td></tr>" +
"<tr>" +
"<td colspan=\"2\" align=\"right\"" +
"bgcolor=\"#ffffff\">" +
"Total:</td>" +
"<td bgcolor=\"#ffffaa\" align=\"right\">" +
Currency.format(cart.getTotal(), request.getLocale()) + "</td>" +
"</td><td><br></td></tr></table>");
// Where to go and what to do next
out.println("<p> <p><strong><a href=\"" +
response.encodeURL("/bookstore/catalog") +
"\">Continue Shopping</a> " +
"<a href=\"" +
response.encodeURL("/bookstore/cashier") +
"\">Check Out</a> " +
"<a href=\"" +
response.encodeURL("/bookstore/showcart?Clear=clear") +
"\">Clear Cart</a></strong>");
} else {
// Shopping cart is empty!
out.println("<font size=\"+2\">" +
"There is nothing in your shopping cart.</font>" +
"<br> <br>" +
"<center><a href=\"" +
response.encodeURL("/bookstore/catalog") +
"\">Back to the Catalog</a> </center>");
}
out.println("</body> </html>");
out.close();
