Java web在线商城系统 (mysql、 jsp、jstl)

package pers.sakurasora.onlinestore.web.servlet; import java.io.IOException; import java.sql.Timestamp; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import java.util.ResourceBundle; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import pers.sakurasora.onlinestore.constant.Constant; import pers.sakurasora.onlinestore.entity.Cart; import pers.sakurasora.onlinestore.entity.CartItem; import pers.sakurasora.onlinestore.entity.Order; import pers.sakurasora.onlinestore.entity.OrderDetail; import pers.sakurasora.onlinestore.entity.PageBean; import pers.sakurasora.onlinestore.entity.User; import pers.sakurasora.onlinestore.service.OrderService; import pers.sakurasora.onlinestore.service.ProductService; import pers.sakurasora.onlinestore.service.impl.OrderServiceImpl; import pers.sakurasora.onlinestore.service.impl.ProductServiceImpl; import pers.sakurasora.onlinestore.utils.UUIDUtil; import pers.sakurasora.onlinestore.web.servlet.base.BaseServlet; /** * * * @Description Servlet--订单模块 */ @WebServlet("/order") public class OrderServlet extends BaseServlet { private static final long serialVersionUID = 1L; private OrderService orderService = new OrderServiceImpl(); private ProductService productService = new ProductServiceImpl(); /** * 生成（保存）订单 * * @param request * @param response * @return * @throws ServletException * @throws IOException */ public String save(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1. 从session中获取user： 未登录 提示登录<br> * * 2. 获取购物车<br> * 3. 封装订单对象：<br> * 创建对象; 设置订单号id; 设置下单时间order_time; 设置total(从购物车中获取）; 设置订单状态state; 设置user; * 设置items(订单项列表)--遍历购物项列表<br> * 4. 封装订单项<br> * 5. 将订单项加入到订单的items中<br> * 6. 调用orderservice完成保存订单操作<br> * 7. 清空购物车<br> * 8. 请求转发到 order_info.jsp */ try { User user = (User) request.getSession().getAttribute("user"); if (user == null) { request.setAttribute("sMessage", "请先登录!"); return "/jsp/message.jsp"; } Cart cart = (Cart) request.getSession().getAttribute("cart"); Order order = new Order(); // 封装订单对象 order.setId(UUIDUtil.getOrderId()); ; // order.setOrder_time(new Date()); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); order.setOrder_time(Timestamp.valueOf(formatter.format(new Date()))); order.setTotal(cart.getTotal()); order.setState(Constant.ORDER_NON_PAYMENT); order.setUser(user); for (CartItem cartItem : cart.getCartItems()) { // 遍历购物项列表 OrderDetail orderDetail = new OrderDetail(); // 封装订单项 orderDetail.setCount(cartItem.getCount()); // 数量 orderDetail.setSubtotal(cartItem.getSubtotal()); // 小计 orderDetail.setProduct(cartItem.getProduct()); // 从购物项中获取商品 orderDetail.setOrder(order); // 属于哪个订单 order.getItems().add(orderDetail); // 将订单项加入order 的items中 } orderService.saveOrder(order); cart.clearCart(); request.setAttribute("order", order); } catch (Exception e) { } return "/jsp/order_info.jsp"; } /** * 我的订单 * * @param request * @param response * @return * @throws ServletException * @throws IOException */ public String findMyOrdersByPage(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1. 获取pageNumber 设置pageSize 获取user(user_id)<br> * 未登录 提示<br> * 2. 调用service获取当前页所有数据 pagebean<br> * 3. 将pagebean放入request域中,请求转发 order_list.jsp */ try { int pageNumber = Integer.parseInt(request.getParameter("pageNumber")); int pageSize = 3; User user = (User) request.getSession().getAttribute("user"); if (user == null) { request.setAttribute("sMessage", "请先登录"); return "/jsp/message.jsp"; } PageBean<Order> orderPageBean = orderService.findMyOrdersByPage(pageNumber, pageSize, user.getId()); request.setAttribute("orderPageBean", orderPageBean); } catch (Exception e) { e.printStackTrace(); request.setAttribute("sMessage", "获取我的订单失败"); return "/jsp/message.jsp"; } return "/jsp/order_list.jsp"; } /** * 获取订单详情（点击“去付款”） * * @param request * @param response * @return * @throws ServletException * @throws IOException */ public String getProductById(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1. 获取orderId<br> * 2. 调用service 查询单个订单 <br> * 3. 请求转发 order_info.jsp */ try { String sOrderId = request.getParameter("orderId"); Order order = orderService.getOrderById(sOrderId); request.setAttribute("order", order); } catch (Exception e) { e.printStackTrace(); request.setAttribute("sMessage", "查询订单详情失败"); return "/jsp/message.jsp"; } return "/jsp/order_info.jsp"; } /** * 下订单 * @param request * @param response * @return * @throws ServletException * @throws IOException */ public String pay(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1. 获取收获信息 获取orderId 获取银行<br> * 2. 调用service获取订单 修改收获人信息 更新订单<br> * 3. 拼接给第三方的url<br> * 4. 重定向 （相应银行在线支付页面） */ try { String sAddress = request.getParameter("address"); String sName = request.getParameter("name"); String sTelephone = request.getParameter("telephone"); String sOrderId = request.getParameter("orderId"); System.out.println("sOrderId:" + sOrderId); Order order = orderService.getOrderById(sOrderId); order.setAddress(sAddress); order.setName(sName); order.setTelephone(sTelephone); orderService.updateOrder(order); request.setAttribute("sMessage", "订单成功！但是未支付"); } catch (Exception e) { e.printStackTrace(); request.setAttribute("sMessage", "支付失败"); return "/jsp/message.jsp"; } return "/jsp/message.jsp"; } /** * 修改订单状态（对已付款订单发货） * * @param request * @param response * @return * @throws ServletException * @throws IOException */ public String updateState(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1. 获取orderId<br> * 2. 设置订单的状态,更新<br> * 3. 重定向 */ try { String sOrderId = request.getParameter("orderId"); orderService.updateStateById(Constant.ORDER_IS_FINISH, sOrderId); response.sendRedirect(request.getContextPath() + "/order?method=findMyOrdersByPage&pageNumber=1"); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException("修改订单状态（确认收货）失败"); } return null; } }