186 lines
8.2 KiB
Java
186 lines
8.2 KiB
Java
package com.example;
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import javax.swing.*;
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import javax.swing.table.DefaultTableModel;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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public class InventoryProductManagement extends JFrame implements ActionListener {
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JMenuBar menuBar;//创建主菜单栏容器
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JMenu menu;//创建顶级菜单项“菜单”
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JMenuItem menuItem1,menuItem2,menuItem3;//创建菜单子项（添加/删除商品）
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private JTable table;//表格组件，用于展示商品数据
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private DefaultTableModel tableModel;//表格数据模型
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InventoryProductManagement() {
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super("进货信息管理");//设置窗口标题
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menuBar = new JMenuBar();//实例化菜单栏
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setJMenuBar(menuBar);//将菜单栏添加到窗体顶部
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menu = new JMenu("菜单");//创建顶级菜单“菜单”
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menuBar.add(menu);//将菜单添加到菜单栏
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//创建菜单项
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menuItem1 = new JMenuItem("进货");
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menuItem2 = new JMenuItem("删除");
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menuItem3 = new JMenuItem("帮助");
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//添加菜单项到菜单
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menu.add(menuItem1);
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menu.add(menuItem2);
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menu.add(menuItem3);
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// menu.add(menuItem3);
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//注册菜单项点击监听器（this表示当前类处理事件）
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menuItem1.addActionListener(this);
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menuItem2.addActionListener(this);
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menuItem3.addActionListener(this);
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// menuItem3.addActionListener(this);
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setSize(500,500);//设置窗口大小
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setLocationRelativeTo(null);//窗口居中显示
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// 表格初始化
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String[] columnNames = {"商品名称（种类）", "商品数量（件）", "进货单价（元）"};//定义表头，此处更改表头文字展示
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tableModel = new DefaultTableModel(columnNames, 0);//创建空表格模型
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table = new JTable(tableModel);//基于模型创建表格
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// 添加带滚动条的表格面板到窗口中央
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JScrollPane scrollPane = new JScrollPane(table);
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add(scrollPane, BorderLayout.CENTER);
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// 初始化加载数据库数据
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loadData();//加载数据库数据到表格
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setVisible(true);//显示窗口
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}
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private void loadData() {
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Jdbc jdbc = new Jdbc();//创建数据库连接对象
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try {
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//执行SQL查询（获取商品名称/库存/进阶/售价/利润/销量）
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ResultSet rs = jdbc.query("SELECT name,count,purchase_price,selling_price,profit,quantity_sold FROM commodity");
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// 清空旧数据
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tableModel.setRowCount(0);//清空表格现有数据
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// 填充新数据（遍历查询结果）
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while (rs.next()) {
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//构建表格行数据（只显示名称/库存/进阶）
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Object[] row = {
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rs.getString("name"),
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rs.getInt("count"),
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rs.getDouble("purchase_price"),
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};
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tableModel.addRow(row);//添加数据行到表格
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}
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rs.close();//关闭结果集
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jdbc.close();//关闭数据库连接
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} catch (SQLException e) {
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e.printStackTrace();
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JOptionPane.showMessageDialog(this, "加载数据失败: " + e.getMessage());//弹出错误提示
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}
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}
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@Override
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public void actionPerformed(ActionEvent e) {
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if (e.getSource() == menuItem1) {
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JFrame frame = new JFrame();//创建添加窗口
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frame.setTitle("添加商品");
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frame.setLayout(new GridLayout(4, 2));//四行两列网格布局
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//创建输入组件
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JLabel nameLabel = new JLabel("商品名称:");
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JTextField nameField = new JTextField();
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JLabel countLabel = new JLabel("商品数量:");
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JTextField countField = new JTextField();
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JLabel purchasePriceLabel = new JLabel("进货单价:");
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JTextField purchasePriceField = new JTextField();
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//添加按钮和取消按钮
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JButton addButton = new JButton("添加");
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JButton cancelButton = new JButton("取消");
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//将组件添加到窗口
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frame.add(nameLabel);
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frame.add(nameField);
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frame.add(countLabel);
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frame.add(countField);
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frame.add(purchasePriceLabel);
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frame.add(purchasePriceField);
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frame.add(addButton);
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frame.add(cancelButton);
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//添加按钮事件
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addButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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//获取输入值
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String name = nameField.getText();
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int count = Integer.parseInt(countField.getText());
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double purchasePrice = Double.parseDouble(purchasePriceField.getText());
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// 调用数据库添加方法 执行SQL插入（初始化销量为0）
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Jdbc jdbc = new Jdbc();
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try {
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jdbc.update("INSERT INTO commodity (name, count, purchase_price, quantity_sold) VALUES ('" + name + "', " + count + ", " + purchasePrice + ", " + 0 + ");");
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jdbc.close();
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// 刷新数据
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loadData();//刷新表格数据
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// 关闭弹窗
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frame.dispose();//关闭添加窗口
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} catch (SQLException ex) {
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ex.printStackTrace();
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JOptionPane.showMessageDialog(frame, "添加商品失败: " + ex.getMessage());
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}
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}
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});
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cancelButton.addActionListener(new ActionListener() {//取消按钮事件
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@Override
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public void actionPerformed(ActionEvent e) {
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frame.dispose();
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}
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});
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frame.setSize(300, 200);
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frame.setLocationRelativeTo(null);
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frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
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frame.setVisible(true);
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}
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else if (e.getSource() == menuItem2) {
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JFrame frame = new JFrame();//创建删除窗口
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frame.setTitle("删除商品");
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frame.setLayout(new GridLayout(2, 2));
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JLabel nameLabel = new JLabel("商品名称:");
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JTextField nameField = new JTextField();
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JButton deleteButton = new JButton("删除");
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JButton cancelButton = new JButton("取消");
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frame.add(nameLabel);
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frame.add(nameField);
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frame.add(deleteButton);
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frame.add(cancelButton);
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//删除按钮事件
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deleteButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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String name = nameField.getText();//获取要删除的商品名
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// 调用数据库删除方法
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Jdbc jdbc = new Jdbc();
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try {
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//执行SQL删除
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jdbc.update("DELETE FROM commodity WHERE name='" + name + "'");
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jdbc.close();
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// 刷新表格
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loadData();
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// 关闭弹窗
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frame.dispose();
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} catch (SQLException ex) {
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ex.printStackTrace();
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JOptionPane.showMessageDialog(frame, "删除商品失败: " + ex.getMessage());
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}
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}
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});
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cancelButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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frame.dispose();
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}
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});
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frame.setSize(300, 200);
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frame.setLocationRelativeTo(null);
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frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
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frame.setVisible(true);
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}
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}
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public static void main(String[] args) {
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new InventoryProductManagement();//启动应用程序
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}
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}
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