java/CartFrame.java

package flowershop.view;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.util.Date;
import java.util.Map;
import java.util.Set;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableModel;

import flowershop.dao.OrderDao;
import flowershop.dao.OrderDetailDao;
import flowershop.model.Flower;
import flowershop.model.Order;
import flowershop.model.OrderDetail;
import flowershop.model.User;
import flowershop.dao.FlowerDao;
import flowershop.daoimpl.FlowerDaoImpl;
import flowershop.daoimpl.OrderDaoImpl;
import flowershop.daoimpl.OrderDetailDaoImpl;

//商品购物车窗口
	public class CartFrame extends MyFrame {
		
		private JTable table;

		// 购物车数据
		private Object[][] data;

		// 创建商品Dao
		private FlowerDao Dao = new FlowerDaoImpl();
		
		// 购物车，键是选择的商品Id，值是商品的数量
		private Map<String, Integer> cart;
		// 引用到上级Frame（ProductListFrame）
		 FlowerListFrame flowerListFrame;

		public CartFrame(Map<String, Integer> cart, FlowerListFrame flowerListFrame) {

			super("商品购物车", 1000, 700);
			this.cart = cart;
			this.flowerListFrame = flowerListFrame;

			JPanel topPanel = new JPanel();
			topPanel.setBackground(new Color(250,220,230));
			FlowLayout fl_topPanel = (FlowLayout) topPanel.getLayout();
			fl_topPanel.setVgap(10);
			fl_topPanel.setHgap(20);
			getContentPane().add(topPanel, BorderLayout.NORTH);

			JButton btnReturn = new JButton("返回商品列表");
			btnReturn.setFont(new Font("微软雅黑", Font.PLAIN, 15));
			topPanel.add(btnReturn);

			JButton btuSubmit = new JButton("提交订单");
			// 注册【提交订单】按钮的ActionEvent事件监听器
			btuSubmit.addActionListener(e -> {
				// 生成订单
				generateOrders();
				JLabel label = new JLabel("订单已经生成，等待付款。");
				btuSubmit.setFont(new Font("微软雅黑", Font.PLAIN, 15));
				if (JOptionPane.showConfirmDialog(this, label, "信息", JOptionPane.YES_NO_OPTION) == JOptionPane.NO_OPTION) {
					// TODO 付款
					System.out.println("未付款");
					System.exit(0);
				} else {
					System.out.println("付款");
					System.exit(1);
				}
			});
			topPanel.add(btuSubmit);

			JScrollPane scrollPane = new JScrollPane();
			getContentPane().add(scrollPane, BorderLayout.CENTER);
			scrollPane.setViewportView(getTable());

			

			// 注册【返回商品列表】按钮的ActionEvent事件监听器
			btnReturn.addActionListener(e -> {
				// 更新购物车
				for (int i = 0; i < data.length; i++) {
					// 商品编号
					String productid = (String) data[i][0];
					// 数量
					Integer quantity = (Integer) data[i][3];
					cart.put(productid, quantity);
				}
					
				this.flowerListFrame.setVisible(true);
				this.setVisible(false);
			});
		
		}

		// 初始化左侧面板中的表格控件
		private JTable getTable() {

			// 准备表中数据
			data = new Object[cart.size()][5];
			Set<String> keys = this.cart.keySet();
			int indx = 0;
			for (String productid : keys) {
				Flower f = Dao.findById(productid);
				data[indx][0] = f.getProductid();// 商品编号
				data[indx][1] = f.getName();// 商品名
				data[indx][2] = new Double(f.getPrice());// 商品单价
				data[indx][3] = new Integer(cart.get(productid));// 数量
				// 计算商品应付金额
				double amount = (double) data[indx][2] * (int) data[indx][3];
				data[indx][4] = new Double(amount);
				indx++;
			}

			// 创建表数据模型
			TableModel model = new CartTableModel(data);

			if (table == null) {
				// 创建表
				table = new JTable(model);
				table.setBackground(new Color(250,220,230));
				// 设置表中内容字体
				table.setFont(new Font("微软雅黑", Font.PLAIN, 16));
				// 设置表列标题字体
				table.getTableHeader().setFont(new Font("微软雅黑", Font.BOLD, 16));
				// 设置表行高
				table.setRowHeight(51);
				table.setRowSelectionAllowed(false);

			} else {
				table.setModel(model);
			}
			return table;
		}

		// 生成订单
		private void generateOrders() {
			// Example: Initialize the user before using it
			MainApp.user = new User();
			String someUserId = null;
			MainApp.user.setUserid(someUserId);
			if (MainApp.user != null) {
			    String userId = MainApp.user.getUserid();
			    // Continue processing with userId
			} else {
			    // Handle the case where user is null
			    System.out.println("未初始化用户");
			}


			OrderDao orderDao = new OrderDaoImpl();
			OrderDetailDao orderDetailDao = new OrderDetailDaoImpl();
			Order order = new Order();
			order.setUserid(MainApp.user.getUserid());
			// 0待付款
			order.setStatus(0);
			// 订单Id是当前时间
			Date now = new Date();
			long orderid = now.getTime();
			order.setOrderid(orderid);
			order.setOrderdate(now);
			order.setAmount(getOrderTotalAmount());

			// 下订单时间是数据库自动生成不用设置
			// 创建订单
			orderDao.create(order);

			for (int i = 0; i < data.length; i++) {

				OrderDetail orderDetail = new OrderDetail();
				orderDetail.setOrderid(orderid);
				orderDetail.setProductid((String) data[i][0]);
				orderDetail.setQuantity((int) data[i][3]);
				orderDetail.setPrice((double) data[i][2]);
				// 创建订单详细
				orderDetailDao.create(orderDetail);
			}
		}

		// 计算订单应付总金额
		private double getOrderTotalAmount() {

			double totalAmount = 0.0;
			for (int i = 0; i < data.length; i++) {
				// 计算商品应付金额
				totalAmount += (Double) data[i][4];
			}
			return totalAmount;
		}
	}