Merge pull request '分用户登录' (#5) from lcm into master

Reviewed-on: #5

src/main/java/com/example/Home.java

@@ -1,31 +1,63 @@
 package com.example;
 
 import javax.swing.*;
+import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.sql.ResultSet;
+import java.sql.SQLException;
 
 public class Home extends JFrame implements ActionListener {
 
     JMenuBar menuBar;
-    JMenu menu;
     //    库存菜单    进货菜单       销售菜单
-    JMenuItem StockMenuItem,InventoryMenuItem,SalesMenuItem;
+    JMenuItem StockMenu,InventoryMenu,SalesMenu,UserMenu;
+    class BackgroundPanel extends JPanel {
+        private Image bg;
+        public BackgroundPanel(String path) {
+            bg = new ImageIcon(path).getImage();
+        }
+        @Override
+        protected void paintComponent(Graphics g) {
+            super.paintComponent(g);
+            if (bg != null) {
+                g.drawImage(bg, 0, 0, getWidth(), getHeight(), this);
+            }
+        }
+    }
 
-    Home() {
+    Home(String username) {
         super("超市进销存信息管理系统");
+        BackgroundPanel bgPanel = new BackgroundPanel("E:\\SuManagement\\images\\a.jpg");
+        bgPanel.setLayout(new BorderLayout());
+        setContentPane(bgPanel);
+
         menuBar = new JMenuBar();
-        menu = new JMenu("菜单");
+        StockMenu = new JMenuItem("库存信息管理");
-        StockMenuItem = new JMenuItem("库存信息管理");
+        InventoryMenu = new JMenuItem("进货信息管理");
-        InventoryMenuItem = new JMenuItem("进货信息管理");
+        SalesMenu = new JMenuItem("销售信息管理");
-        SalesMenuItem = new JMenuItem("销售信息管理");
+        menuBar.add(StockMenu);
-        menu.add(StockMenuItem);
+        menuBar.add(InventoryMenu);
-        menu.add(InventoryMenuItem);
+        menuBar.add(SalesMenu);
-        menu.add(SalesMenuItem);
-        menuBar.add(menu);
         setJMenuBar(menuBar);
-        StockMenuItem.addActionListener(this);
+        StockMenu.addActionListener(this);
-        InventoryMenuItem.addActionListener(this);
+        InventoryMenu.addActionListener(this);
-        SalesMenuItem.addActionListener(this);
+        SalesMenu.addActionListener(this);
+        Jdbc jdbc = new Jdbc();
+        String sql = "select * from user where username='"+username+"'";
+        try {
+            ResultSet rs = jdbc.query(sql);
+            if(rs.next()){
+                username = rs.getString("identity");
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        if(username.equals("admin")){
+            UserMenu = new JMenuItem("用户管理");
+            menuBar.add(UserMenu);
+            UserMenu.addActionListener(this);
+        }
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setSize(500,500);
         setLocationRelativeTo(null);
@@ -33,14 +65,20 @@ public class Home extends JFrame implements ActionListener {
     }
     @Override
     public void actionPerformed(ActionEvent e) {
-        if(e.getSource()==StockMenuItem){
+        if(e.getSource()==StockMenu){
             new StockProductManagement();
         }
-        if(e.getSource()==InventoryMenuItem){
+        if(e.getSource()==InventoryMenu){
             new InventoryProductManagement();
         }
-        if(e.getSource()==SalesMenuItem){
+        if(e.getSource()==SalesMenu){
             new SalesProductManagement();
         }
+        if(e.getSource()==UserMenu){
+            new UserManagement();
+        }
+    }
+    public static void main(String[] args) {
+        new Home("admin");
     }
 }

src/main/java/com/example/InventoryProductManagement.java

@@ -21,8 +21,8 @@ public class InventoryProductManagement extends JFrame implements ActionListener
         menu = new JMenu("菜单");//创建顶级菜单“菜单”
         menuBar.add(menu);//将菜单添加到菜单栏
         //创建菜单项
-        menuItem1 = new JMenuItem("添加商品");
+        menuItem1 = new JMenuItem("进货");
-        menuItem2 = new JMenuItem("删除商品");
+        menuItem2 = new JMenuItem("删除");
         menuItem3 = new JMenuItem("帮助");
         //添加菜单项到菜单
         menu.add(menuItem1);

src/main/java/com/example/Main.java

@@ -54,7 +54,7 @@ public class Main extends JFrame implements ActionListener {
                 ResultSet rs = jdbc.query(sql);
                 if(rs.next()&&tf3.getText().equals(jb3.getText())) {
                     JOptionPane.showMessageDialog(null, "登录成功");
-                    new Home();
+                    new Home(rs.getString("username"));
                     this.setVisible(false);
                 }
                 else{

src/main/java/com/example/UserManagement.java

@@ -0,0 +1,199 @@
+package com.example;
+
+import javax.swing.*;
+import javax.swing.table.DefaultTableModel;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class UserManagement extends JFrame implements ActionListener {
+
+    JMenuBar menuBar;
+    JMenuItem addItem, deleteItem, updateItem, refreshItem;
+    private JTable table;
+    private DefaultTableModel tableModel;
+
+    public UserManagement() {
+        super("用户信息管理");
+
+        // 菜单栏
+        menuBar = new JMenuBar();
+        setJMenuBar(menuBar);
+
+        addItem = new JMenuItem("添加用户");
+        deleteItem = new JMenuItem("删除用户");
+        updateItem = new JMenuItem("修改用户");
+        refreshItem = new JMenuItem("刷新数据");
+
+        menuBar.add(addItem);
+        menuBar.add(deleteItem);
+        menuBar.add(updateItem);
+        menuBar.add(refreshItem);
+
+        addItem.addActionListener(this);
+        deleteItem.addActionListener(this);
+        updateItem.addActionListener(this);
+        refreshItem.addActionListener(this);
+
+        // 表格模型
+        String[] columnNames = {"用户名", "密码", "身份"};
+        tableModel = new DefaultTableModel(columnNames, 0) {
+            @Override
+            public boolean isCellEditable(int row, int column) {
+                return false; // 不直接在表格里改
+            }
+        };
+        table = new JTable(tableModel);
+
+        JScrollPane scrollPane = new JScrollPane(table);
+        add(scrollPane, BorderLayout.CENTER);
+
+        setSize(600, 400);
+        setLocationRelativeTo(null);
+
+        // 初始加载
+        loadData();
+        setVisible(true);
+    }
+
+    // 加载 identity=user 的数据
+    private void loadData() {
+        Jdbc jdbc = new Jdbc();
+        try {
+            ResultSet rs = jdbc.query("SELECT username,password,identity FROM user WHERE identity='user'");
+            tableModel.setRowCount(0);
+            while (rs.next()) {
+                Object[] row = {
+                        rs.getString("username"),
+                        rs.getString("password"),
+                        rs.getString("identity")
+                };
+                tableModel.addRow(row);
+            }
+            rs.close();
+            jdbc.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+            JOptionPane.showMessageDialog(this, "加载数据失败: " + e.getMessage());
+        }
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        // 添加用户
+        if (e.getSource() == addItem) {
+            JFrame frame = new JFrame("添加用户");
+            frame.setLayout(new GridLayout(5, 2));
+            JLabel nameLabel = new JLabel("用户名:");
+            JTextField nameField = new JTextField();
+            JLabel passLabel = new JLabel("密码:");
+            JPasswordField passField = new JPasswordField();
+            JButton addButton = new JButton("添加");
+            JButton cancelButton = new JButton("取消");
+
+            frame.add(nameLabel); frame.add(nameField);
+            frame.add(passLabel); frame.add(passField);
+            frame.add(addButton); frame.add(cancelButton);
+
+            addButton.addActionListener(ev -> {
+                String username = nameField.getText();
+                String password = passField.getText();
+
+                Jdbc jdbc = new Jdbc();
+                try {
+                    jdbc.update("INSERT INTO user (username,password,email,phone,identity) VALUES ('"
+                            + username + "','" + password + "','user')");
+                    jdbc.close();
+                    loadData();
+                    frame.dispose();
+                } catch (SQLException ex) {
+                    JOptionPane.showMessageDialog(frame, "添加失败: " + ex.getMessage());
+                }
+            });
+
+            cancelButton.addActionListener(ev -> frame.dispose());
+            frame.setSize(400, 250);
+            frame.setLocationRelativeTo(null);
+            frame.setVisible(true);
+        }
+
+        // 删除用户
+        else if (e.getSource() == deleteItem) {
+            int row = table.getSelectedRow();
+            if (row == -1) {
+                JOptionPane.showMessageDialog(this, "请先选择要删除的用户！");
+                return;
+            }
+            String username = (String) tableModel.getValueAt(row, 0);
+            int confirm = JOptionPane.showConfirmDialog(this, "确定删除用户: " + username + " ?", "确认", JOptionPane.YES_NO_OPTION);
+            if (confirm == JOptionPane.YES_OPTION) {
+                Jdbc jdbc = new Jdbc();
+                try {
+                    jdbc.update("DELETE FROM user WHERE username='" + username + "'");
+                    jdbc.close();
+                    loadData();
+                } catch (SQLException ex) {
+                    JOptionPane.showMessageDialog(this, "删除失败: " + ex.getMessage());
+                }
+            }
+        }
+
+        // 修改用户（选中一行后弹窗修改）
+        else if (e.getSource() == updateItem) {
+            int row = table.getSelectedRow();
+            if (row == -1) {
+                JOptionPane.showMessageDialog(this, "请先选择要修改的用户！");
+                return;
+            }
+            String oldUsername = (String) tableModel.getValueAt(row, 0);
+
+            JFrame frame = new JFrame("修改用户");
+            frame.setLayout(new GridLayout(5, 2));
+            JTextField nameField = new JTextField((String) tableModel.getValueAt(row, 0));
+            JTextField passField = new JTextField((String) tableModel.getValueAt(row, 1));
+            JTextField emailField = new JTextField((String) tableModel.getValueAt(row, 2));
+            JTextField phoneField = new JTextField((String) tableModel.getValueAt(row, 3));
+            JButton saveButton = new JButton("保存");
+            JButton cancelButton = new JButton("取消");
+
+            frame.add(new JLabel("用户名:")); frame.add(nameField);
+            frame.add(new JLabel("密码:")); frame.add(passField);
+            frame.add(new JLabel("邮箱:")); frame.add(emailField);
+            frame.add(new JLabel("电话:")); frame.add(phoneField);
+            frame.add(saveButton); frame.add(cancelButton);
+
+            saveButton.addActionListener(ev -> {
+                String username = nameField.getText();
+                String password = passField.getText();
+                String email = emailField.getText();
+                String phone = phoneField.getText();
+
+                Jdbc jdbc = new Jdbc();
+                try {
+                    jdbc.update("UPDATE user SET username='" + username + "', password='" + password + "', email='" + email + "', phone='" + phone + "' WHERE username='" + oldUsername + "'");
+                    jdbc.close();
+                    loadData();
+                    frame.dispose();
+                } catch (SQLException ex) {
+                    JOptionPane.showMessageDialog(frame, "修改失败: " + ex.getMessage());
+                }
+            });
+
+            cancelButton.addActionListener(ev -> frame.dispose());
+            frame.setSize(400, 250);
+            frame.setLocationRelativeTo(null);
+            frame.setVisible(true);
+        }
+
+        // 刷新数据
+        else if (e.getSource() == refreshItem) {
+            loadData();
+        }
+    }
+
+    public static void main(String[] args) {
+        new UserManagement();
+    }
+}