public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
boolean orderCompleted = true;
// Get the user's session and shopping cart
HttpSession session = request.getSession(true);
ResourceBundle messages = (ResourceBundle) session.getAttribute("messages");
ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
if (cart == null) {
cart = new ShoppingCart();
session.setAttribute("cart", cart);
}
// Update the inventory
try {
utx.begin();
bookDB.buyBooks(cart);
utx.commit();
} catch (Exception ex) {
try {
utx.rollback();
} catch (Exception e) {
System.out.println("Rollback failed: " + e.getMessage());
}
System.err.println(ex.getMessage());
orderCompleted = false;
}
// Payment received -- invalidate the session
session.invalidate();
// set content type header before accessing the Writer
response.setContentType("text/html");
response.setBufferSize(8192);
PrintWriter out = response.getWriter();
// then write the response
out.println(
"<html>" + "<head><title>" + messages.getString("TitleReceipt") + "</title></head>");
// Get the dispatcher; it gets the banner to the user
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/banner");
if (dispatcher != null) {
dispatcher.include(request, response);
}
if (orderCompleted) {
out.println("<h3>" + messages.getString("ThankYou") + request.getParameter("cardname") + ".");
} else {
out.println("<h3>" + messages.getString("OrderError"));
}
out.println(
"<p> <p><strong><a href=\""
+ response.encodeURL(request.getContextPath())
+ "/bookstore\">"
+ messages.getString("ContinueShopping")
+ "</a> "
+ "</body></html>");
out.close();
}
