Koszyk w sesji

PC26-SklepWeb/src/main/java/sklep/web/AddToBasket.java

@@ -8,6 +8,7 @@ import javax.servlet.annotation.WebServlet;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
 
 import sklep.basket.Basket;
 import sklep.db.DBConnection;
@@ -25,11 +26,17 @@ public class AddToBasket extends HttpServlet {
 				ProductDAO productDAO = db.productDAO();
 				Product product = productDAO.findById(id);
 				
-				ServletContext servletContext = this.getServletContext();
-				Basket basket = (Basket) servletContext.getAttribute("basket");
+				// Zamiast HttpSession można by użyć ServletContext,
+				// ale wtedy mielibyśmy efekt "globalnego" koszyka.
+				// ServletContext servletContext = this.getServletContext();
+				
+				// Sesja jest skojarzona z konkretnym klientem, działa to dzięki ciasteczkom.
+				
+				HttpSession session = request.getSession();
+				Basket basket = (Basket) session.getAttribute("basket");
 				if(basket == null) {
 					basket = new Basket();
-					servletContext.setAttribute("basket", basket);
+					session.setAttribute("basket", basket);
 				}
 				basket.addProduct(product);
 			}