computer-web/src/main/java/example/controller/OrdersServlet.java

package example.controller;

import example.model.Computer;
import example.model.User;
import example.service.ICartService;
import example.service.IOrdersService;
import example.service.impl.CartServiceImpl;
import example.service.impl.OrdersServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet("/orders")
public class OrdersServlet extends HttpServlet {

    IOrdersService ordersService=new OrdersServiceImpl();

    ICartService cartService=new CartServiceImpl();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String action = req.getParameter("action");
        switch (action) {
            case "all":
                ordersService.allOrder(req, resp);
                break;
            case "my":
                ordersService.myOrder(req, resp);
                break;
            case "add":
                try {
                    ordersService.checkOrder(req, resp);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                break;
            case "delete":
//                ordersService.delete(req, resp);
                break;

        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        double price = Double.parseDouble(req.getParameter("price"));
        String address = req.getParameter("address");
        String remark = req.getParameter("remark");
        User user = (User) req.getSession().getAttribute("user");
        int flag=ordersService.addOrder(user.getId(),price, address, remark);
//        移出购物车所有信息
        try {
            List<Computer> computers = cartService.myCart(user.getId());
            for (Computer computer : computers) {
                cartService.removeFromCart(user.getId(), computer.getId());
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        resp.sendRedirect("/");
    }
}