import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import database.*; import cart.ShoppingCart; public class MusicCatalogServlet extends HttpServlet { public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { int Start = 0; int CurrPage = 1; // 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); } // set content-type header before accessing the Writer response.setContentType("text/html"); PrintWriter out = response.getWriter(); // then write the data of the response out.println("" + " Musics Catalog " + "" + "

Musics We Have ...

"); //Data on the musics are from the database servlet MusicDBServlet database = (MusicDBServlet) getServletConfig().getServletContext().getServlet("musicdb"); // Additions to the shopping cart String musicToAdd = request.getParameter("Buy"); if (musicToAdd != null) { MusicDetails music = database.getMusicDetails(musicToAdd); cart.add(musicToAdd, music, "music"); out.println("" + "" + "Added " + music.getTitle() + " "+ "to Shopping Cart"); } //Give the option of checking cart or checking out if cart not empty if (cart.getNumberOfItems() > 0) { out.println("" + "" + "" + "" + "1" + "  2"); Start = 0; CurrPage = 1; } String two = "2"; String one = "1"; if(Page != null){ if(Page.equals(one)) { out.println("" + "      1" + "  2"); Start = 0; CurrPage = 1; } if(Page.equals(two)) { out.println("" + "      1" + "  2"); Start = 5; CurrPage = 2; } } out.println("" + "
 page count: 2
"); out.println("" + "
Check Shopping Cart  Buy your Music CD
"); MusicDetails[] musics = database.getMusicsSortedByTitle(); int numMusics = database.getNumberOfMusics(); for(int i=Start; i < (Start + 5); i++) { String musicId = musics[i].getMusicId(); //Print out info on each music in its own two rows out.println("" + "" + "" + "" + "" + "" + "" + "" + ""); } out.println("
" + // width=\"60%\">" + "" + musics[i].getTitle() + "" + "" + "         " + "" + "Add To Shopping Cart" + "" + "
" + "" + "" + "" + "" + "" + "
  " + "Price Range:" + musics[i].getPrice() + "
Singers: " + musics[i].getFirstName() + " " + musics[i].getSurname() + "
" + "Company:" + musics[i].getCompany() +"
" + "" + "

" + "

"); out.close(); } public String getServletInfo() { return "The Catalog servlet adds musics to the user's " + "shopping cart and prints the catalog."; } }