/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String userPath = request.getServletPath();
HttpSession session = request.getSession();
Category selectedCategory;
Collection<Product> categoryProducts;
// if category page is requested
if (userPath.equals("/category")) {
// get categoryId from request
String categoryId = request.getQueryString();
if (categoryId != null) {
// get selected category
selectedCategory = categoryFacade.find(Short.parseShort(categoryId));
// place selected category in session scope
session.setAttribute("selectedCategory", selectedCategory);
// get all products for selected category
categoryProducts = selectedCategory.getProductCollection();
// place category products in session scope
session.setAttribute("categoryProducts", categoryProducts);
}
// if cart page is requested
} else if (userPath.equals("/viewCart")) {
String clear = request.getParameter("clear");
if ((clear != null) && clear.equals("true")) {
ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
cart.clear();
}
userPath = "/cart";
// if checkout page is requested
} else if (userPath.equals("/checkout")) {
ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
// calculate total
cart.calculateTotal(surcharge);
// forward to checkout page and switch to a secure channel
// if user switches language
} else if (userPath.equals("/chooseLanguage")) {
// get language choice
String language = request.getParameter("language");
// place in request scope
request.setAttribute("language", language);
String userView = (String) session.getAttribute("view");
if ((userView != null)
&& (!userView.equals("/index"))) { // index.jsp exists outside 'view' folder
// so must be forwarded separately
userPath = userView;
} else {
// if previous view is index or cannot be determined, send user to welcome page
try {
request.getRequestDispatcher("/index.jsp").forward(request, response);
} catch (Exception ex) {
ex.printStackTrace();
}
return;
}
}
// use RequestDispatcher to forward request internally
String url = "/WEB-INF/view" + userPath + ".jsp";
try {
request.getRequestDispatcher(url).forward(request, response);
} catch (Exception ex) {
ex.printStackTrace();
}
}
