ReceiptServletpublic class ReceiptServlet extends HttpServlet | An HTTP servlet that responds to the POST method of the HTTP protocol.
It clears the shopping cart, thanks the user for the order,
and resets the page to the BookStore's main page. |
| Methods Summary |
|---|
| public void | doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
// Get the user's session and shopping cart
HttpSession session = request.getSession(true);
ShoppingCart cart =
(ShoppingCart)session.getValue(session.getId());
// If the user has no cart, create a new one
if (cart == null) {
cart = new ShoppingCart();
session.putValue(session.getId(), cart);
}
// Payment received -- invalidate the session
session.invalidate();
// set content type header before accessing the Writer
response.setContentType("text/html");
PrintWriter out = response.getWriter();
// then write the response
out.println("<html>" +
"<head><title> Receipt </title>" +
"<meta http-equiv=\"refresh\" content=\"4; url=" +
"http://" + request.getHeader("Host") +
"/servlet/bookstore;\">" +
"</head>" +
"<body bgcolor=\"#FFFFFF\">" +
"<center>" +
"<hr> <br> " +
"<h1>" +
"<font size=\"+3\" color=\"red\">Duke's </font>" +
"<font size=\"+3\" color=\"purple\">Bookstore</font>" +
"</h1>" +
"</center>" +
"<br> <hr> <br> ");
out.println("<h3>Thank you for purchasing your books from us " +
request.getParameter("cardname") +
"<p>Please shop with us again soon!</h3>" +
"<p><i>This page automatically resets.</i>" +
"</body></html>");
out.close();
| | public java.lang.String | getServletInfo()
return "The Receipt servlet clears the shopping cart, " +
"thanks the user for the order, and resets the " +
"page to the BookStore's main page.";
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