public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { res.setContentType("text/html"); PrintWriter out = res.getWriter(); Enumeration values = req.getParameterNames(); String name = ""; String value = ""; String id = ""; while (values.hasMoreElements()) { name = ((String) values.nextElement()).trim(); value = req.getParameter(name).trim(); if (name.equals("id")) id = value; } if (url.equals("")) { url = getServletContext().getInitParameter("url"); cas_url = getServletContext().getInitParameter("cas_url"); } HttpSession session = null; session = req.getSession(false); if (session != null) { session.invalidate(); } res.sendRedirect(cas_url); return; }
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(); }