一.购买页面

1.ForeServlet.buyone()

在产品页面点击立即购买会访问地址
http://127.0.0.1:8080/tmall/forebuyone?pid=844&num=3
通过访问地址/forebuyone导致ForeServlet.buyone()方法被调用
  int pid=Interger.parseInt(request.getParameter("pid"));
  int num = Interger.parseInt(request.getParameter("num"));
   Product p = productDAO.get(pid);
   User user = request.getSession.getAttribute("user");

   boolean found = false;
   List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
  for(orderItem oi : ois){
       if(oi.getProduct().getId() =  p.getId()){
           oi.setNumber(oi.getNumber+num);
           orderItemDAO.update(oi);
           found = true;
           oiid = oi.getId();
           break;
      }
  }
  if(!found){
        OrderItem oi = new OrderItem();
        oi.setUser(user);
        oi.setNumber(num);
        oi.setProduct(p);
        orderItemDAO.add(oi);
        oiid = oi.getId();
 }
   return "@forebuy?oiid="+oiid;

二.结算页面

1.ForeServlet.buy()

上一节访问forebuy?oiid=1页面导致ForeServlet.buy()被调用
   String[] oiids = request.getParameterValues("oiid");
   List<OrderItem> ois = new ArrayList<>();
   float total = 0;
   for(String strid : oiids){
              int oiid = Interger.parseInt(strid);
              OrderItem oi = orderItemDAO.get(oiid);
              total  + = oi.getProduct().getPromotePrice()*oi.getNumber();
             ois.add(oi);
   }
         reuqest.getSession().setAttribute("ois",ois);
        request.setAttribute("total",total);
       return "buy.jsp";

2.buy.jsp

     header.jsp
     top.jsp
            buyPage.jsp
     footer.jsp

三.加入购物车

四.查看购物车

1.ForeServlet.cart()

 访问地址/forecart导致ForeServlet.cart()方法被调用
 User user = request.getSession.getAttribute("user");
 List<OrderItem> ois = OrderItemDAO.listByUser(user.getId());
 request.setAttribute("ois",ois);
 return "cart.jsp";

2.cart.jsp

 header.jsp
 top.jsp
 simpleSearch.jsp
        cartPage.jsp
 footer.jsp

五.登陆状态过滤器

1.ForeAuthFilter

 String contextPath = request.getServletContext().getContextPath();
 String[] noNeedAuthPage = new String[]{
    "homepage",
    "checkLogin",
    "register",
    "loginAjax",
    "login",
    "product",
    "category",
     "search"
 };
   String uri = request.getRequestURI();
   uri = StringUtils.remove(uri,contextPath);
   if(uri.startsWith("/fore")&&!uri.startsWith("/foreServlet")){
  String method = StringUtils.substringAfterLast(uri,"/fore" );
        if(!Arrays.asList(noNeedAuthPage).contains(method)){
            User user =(User) request.getSession().getAttribute("user");
            if(null==user){
                response.sendRedirect("login.jsp");
                return;
            }
        }
 }

2.web.xml

     在web.xml增加对ForeAuthFilter的配置
      注：必须加在ForeServletFilter之前

六.购物车页面操作

1.调整订单数量

   点击增加减少按钮，根据cartPage.jsp中的js代码，会通过Ajax访问/forechangeOrderItem路径
   导致ForeServlet.changeOrderItem()方法被调用
   User user = request.getSession().getAttribute("user");
   if(null==user)
          return "%fail";
   int pid = Interger.parseInt(request.getParameter("pid"));
   int number = Interger.parseInt(request.getParameter("number"));
   List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
   for(orderItem oi : ois){
        if(oi.getProduct().getId() == pid){
          oi.setNumber(number);
          orderItemDAO.update(oi);
          break;
         }
    }
   return "%success";

2.删除订单项

 ForeServlet.deleteOrderItem()
 User user = request.getSession().getAttribute("user");
  if(null==user)
          return "%fail";
  int oiid = Interger.parseInt(reuqest.getParameter("oiid"));
 orderItemDAO.delete(oiid);
 return "%success";

七.生成订单

1. ForeServlet.createOrder

  User user = request.getSession().getAttribute("user");
   List<OrderItem> ois = (List<OrderItem>)request.getSession().getAttribute("ois");
   if(ois.isEmpty())
        return "@login.jsp";
   String address = request.getParameter("adress");  
   String post = request.getParameter("post");
   String receiver = request.getParameter("receiver");
   String mobile = request.getParameter("mobile");
   String userMessage = request.getParameter("userMessage"); 
  
   Order order = new Order();
   String orderCode = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date())+RandomUtils.nextInt(10000);
   order.setOrderCode(orderCode);
   order.setAddress(address);
   order.setPost(post);
   order.setReceiver(receiver);
   order.setMobile(mobile);
   order.setUserMessage(userMessage);
   order.setCreateDate(new Date());
   order.setUser(user);
   order.setStatus(OrderDAO.waitPay);
   orderDAO.add(order);
   float total = 0;
   for(OrderItem oi : ois){
         oi.setOrder(order);
         orderItemDAO.update(oi);
       total+=oi.getProduct().getPromotePrice()*oi.getNumber();
    }
    return "@forealipay?oid="+order.getId() +"&total="+total;

八.我的订单页

1.ForeServlet.bought()

 User user = (User) request.getSession().getAttribute("user");
 List<Ordet> os = orderDAO.list(user.getId(),OrderDAO.delete);
 orderItemDAO.fill(os);
 request.setAttribute("os",os);
 return "bought,jsp";

2.bought.jsp

 header.jsp
 top.jsp
 simpleSearch.jsp
        boughtPage.jsp
 footer.jsp

3.确认收货ForeServlet.confirmPay()

  int oid = Interger.parseInt(request.getParameter("oid"));
  Order o = orderDAO.get(oid);
  orderItemDAO.fill(o);
  request.setAttribute("o",o);
  return "confirmPay.jsp";

4.confirmPay.jsp

 header.jsp
 top.jsp
 simpleSearch.jsp
        confirmPayPage.jsp
 footer.jsp

5.确认收货成功ForeServlet.orderConfirmed()

  int oid = Interger.parseInt(request.getParameter("oid"));
  Order o = orderDAO.get(oid);
  o.setStatus(orderDAO.waitReview);
  o.setConfirmDate(new Date());
  orderDAO.update(o);
  return "orderConfirmed.jsp";

6.orderConfirmed.jsp

  header.jsp
  top.jsp
   simpleSearch.jsp
       orderConfirmedPage.jsp
 footer.jsp

7.删除ForeServlet.deleteOrder()

int oid = Integer.parseInt(request.getParameter("oid"));
Order o = orderDAO.get(oid);
o.setStatus(OrderDAO.delete);
orderDAO.update(o);
return "%success";

8评价产品页面 ForeServlet.review()

  int oid = Interger.parseInt(request.getParameter("oid"));
  Order o = orderDAO.get(oid);
  orderItemDAO.fill(o);
  Product p = o.getOrderItems().get(0).getProduct();
  List<Review> reviews = reviewDAO.list(p.getId());
  productDAO.setSaleAndReviewNumber(p);
  request.setAttribute("p", p);
  request.setAttribute("o", o);
  request.setAttribute("reviews", reviews);
  return "review.jsp";

9.提交评价ForeServlet.doreview()

  int oid = Integer.parseInt(request.getParameter("oid"));
Order o = orderDAO.get(oid);
o.setStatus(OrderDAO.delete);
orderDAO.update(o);
  int pid = Interger.parseInt(request.getParameter("pid"));
 Product p = productDAO.get(pid);
 String content = request.getParameter("content");
 content = HtmlUtils.htmlEscape(content);
 User user = (User) request.getSession().getAttribute("user");
 Review review = new Review();
 review.setContent(content);
 review.setProduct(p);
 review.setCreateDate(new Date());
 review.setUser(user);
 reviewDAO.add(review);
 return "@forereview?oid="+oid+"&showonly=true";