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package 学生成绩查询管理系统.功能;
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import 学生成绩查询管理系统.界面.Login;
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import 学生成绩查询管理系统.界面.StudentSystem;
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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.*;
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public class ClassroomManager extends JFrame implements ActionListener {
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private JMenuItem reLogin;
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private JMenuItem menu;
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private JMenuItem exit;
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private JMenuItem aboutMe;
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String path = "C:\\Users\\23513\\Desktop\\学生成绩管理系统\\";
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private static final String URL = "jdbc:mysql://localhost:3306/studentmanager";
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private static final String USERNAME = "root";
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private static final String PASSWORD = "123456";
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private static Connection connection;
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private DefaultTableModel tableModel;
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private JTable dataTable;
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public ClassroomManager() {
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initializeDatabase();
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initializeMainFrame();
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queryRecords(); // Auto-load data from the database upon initializing the main frame
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initMenu();
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}
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// 初始化数据库连接
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private void initializeDatabase() {
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try {
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connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
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} catch (SQLException e) {
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e.printStackTrace();
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JOptionPane.showMessageDialog(this, "无法连接到数据库", "错误", JOptionPane.ERROR_MESSAGE);
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System.exit(1);
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}
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}
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// 初始化主界面
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private void initializeMainFrame() {
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setTitle("学生信息管理界面");
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setSize(600, 450);
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setDefaultCloseOperation(EXIT_ON_CLOSE);
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setLocationRelativeTo(null);
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ImageIcon imageIcon = new ImageIcon( "imge\\Login1.2.png");
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JLabel label = new JLabel(imageIcon);
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this.getContentPane().add(label, BorderLayout.CENTER);
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// 修改图标
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Toolkit tk = Toolkit.getDefaultToolkit();
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// 获取图片 三种图片格式都可以
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java.awt.Image img = tk.getImage( "imge\\成绩录入2.png");
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this.setIconImage(img);//详细分析
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// 创建表格模型和表格
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tableModel = new DefaultTableModel();
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tableModel.addColumn("ID");
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tableModel.addColumn("姓名");
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tableModel.addColumn("年龄");
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tableModel.addColumn("性别");
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tableModel.addColumn("年级");
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tableModel.addColumn("班级");
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dataTable = new JTable(tableModel);
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// 创建按钮面板
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JPanel buttonPanel = new JPanel();
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JButton addButton = new JButton("添加数据");
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JButton displayButton = new JButton("显示数据");
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JButton deleteButton = new JButton("删除数据");
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// 将按钮添加到按钮面板
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buttonPanel.add(addButton);
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buttonPanel.add(displayButton);
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buttonPanel.add(deleteButton);
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// 添加按钮点击事件监听器
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addButton.addActionListener(e -> showAddDataDialog());
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displayButton.addActionListener(e -> showDisplayDataDialog());
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deleteButton.addActionListener(e -> deleteSelectedRecord());
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// 将按钮面板和表格添加到主界面
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add(buttonPanel, BorderLayout.NORTH);
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add(new JScrollPane(dataTable), BorderLayout.CENTER);
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}
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// 显示添加数据的对话框
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private void showAddDataDialog() {
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AddDataDialog addDataDialog = new AddDataDialog(this, "添加数据", true);
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addDataDialog.setLocationRelativeTo(this);
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addDataDialog.setVisible(true);
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}
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// 显示显示数据的对话框
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private void showDisplayDataDialog() {
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queryRecords();
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}
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// 查询数据库中的记录
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private void queryRecords() {
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try {
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Statement statement = connection.createStatement();
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ResultSet resultSet = statement.executeQuery("SELECT * FROM student");
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tableModel.setRowCount(0);
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while (resultSet.next()) {
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Object[] rowData = {
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resultSet.getInt("id"),
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resultSet.getString("name"),
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resultSet.getInt("age"),
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resultSet.getString("sex"),
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resultSet.getString("grade"),
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resultSet.getString("classroom")
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};
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tableModel.addRow(rowData);
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}
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// Close resources
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resultSet.close();
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statement.close();
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} catch (SQLException e) {
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e.printStackTrace();
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JOptionPane.showMessageDialog(this, "查询数据失败", "错误", JOptionPane.ERROR_MESSAGE);
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}
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}
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// 删除选定的记录
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private void deleteSelectedRecord() {
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int selectedRow = dataTable.getSelectedRow();
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if (selectedRow != -1) {
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int idToDelete = (int) dataTable.getValueAt(selectedRow, 0);
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try {
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String deleteQuery = "DELETE FROM student WHERE id=?";
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try (PreparedStatement preparedStatement = connection.prepareStatement(deleteQuery)) {
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preparedStatement.setInt(1, idToDelete);
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preparedStatement.executeUpdate();
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}
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queryRecords();
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JOptionPane.showMessageDialog(this, "记录删除成功", "成功", JOptionPane.INFORMATION_MESSAGE);
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} catch (SQLException e) {
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e.printStackTrace();
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JOptionPane.showMessageDialog(this, "删除记录失败", "错误", JOptionPane.ERROR_MESSAGE);
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}
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} else {
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JOptionPane.showMessageDialog(this, "请选择要删除的记录", "警告", JOptionPane.WARNING_MESSAGE);
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}
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}
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// 添加数据的对话框
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private static class AddDataDialog extends JDialog {
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private JTextField idTextField;
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private JTextField nameTextField;
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private JTextField ageTextField;
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private JTextField sexTextField;
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private JTextField gradeTextField;
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private JTextField classroomTextField;
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public AddDataDialog(JFrame parent, String title, boolean modal) {
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super(parent, title, modal);
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setSize(300, 200);
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// 初始化文本框和按钮
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idTextField = new JTextField(15);
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nameTextField = new JTextField(15);
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ageTextField = new JTextField(15);
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sexTextField = new JTextField(15);
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gradeTextField = new JTextField(15);
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classroomTextField = new JTextField(15);
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JButton addButton = new JButton("添加");
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addButton.addActionListener(e -> addRecord());
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// 创建面板，并添加标签、文本框和按钮
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JPanel panel = new JPanel(new GridLayout(7, 2, 10, 10));
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panel.add(new JLabel("ID:"));
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panel.add(idTextField);
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panel.add(new JLabel("姓名:"));
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panel.add(nameTextField);
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panel.add(new JLabel("年龄:"));
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panel.add(ageTextField);
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panel.add(new JLabel("性别:"));
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panel.add(sexTextField);
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panel.add(new JLabel("年级:"));
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panel.add(gradeTextField);
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panel.add(new JLabel("班级:"));
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panel.add(classroomTextField);
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panel.add(new JLabel()); // 空标签用于调整布局
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panel.add(addButton);
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// 将面板添加到对话框
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add(panel);
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}
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// 添加记录到数据库
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private void addRecord() {
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try {
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// Get values from text fields
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int id = Integer.parseInt(idTextField.getText());
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String name = nameTextField.getText();
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int age = Integer.parseInt(ageTextField.getText());
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String sex = sexTextField.getText();
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String grade = gradeTextField.getText(); // Update to getString for non-numeric grade
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String classroom = classroomTextField.getText();
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// Insert the record into the database
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String insertQuery = "INSERT INTO student (id, name, age, sex, grade, classroom) VALUES (?, ?, ?, ?, ?, ?)";
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try (PreparedStatement preparedStatement = connection.prepareStatement(insertQuery)) {
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preparedStatement.setInt(1, id);
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preparedStatement.setString(2, name);
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preparedStatement.setInt(3, age);
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preparedStatement.setString(4, sex);
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preparedStatement.setString(5, grade); // Update to setString for non-numeric grade
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preparedStatement.setString(6, classroom);
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preparedStatement.executeUpdate();
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}
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// Update the table model with the new data
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((ClassroomManager) getParent()).queryRecords();
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// Close the dialog
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JOptionPane.showMessageDialog(this, "记录添加成功", "成功", JOptionPane.INFORMATION_MESSAGE);
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dispose();
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} catch (NumberFormatException | SQLException e) {
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e.printStackTrace();
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JOptionPane.showMessageDialog(this, "添加记录失败", "错误", JOptionPane.ERROR_MESSAGE);
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}
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}
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}
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private void initMenu() {
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JMenuBar jMenuBar = new JMenuBar();
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JMenu about = new JMenu("关于我");
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JMenu function = new JMenu("功能");
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aboutMe = new JMenuItem("QQ二维码");
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reLogin = new JMenuItem("重新登录");
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menu = new JMenuItem("主页");
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exit = new JMenuItem("退出");
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about.add(aboutMe);
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function.add(reLogin);
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function.add(menu);
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function.add(exit);
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aboutMe.addActionListener(this);
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reLogin.addActionListener(this);
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menu.addActionListener(this);
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exit.addActionListener(this);
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jMenuBar.add(about);
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jMenuBar.add(function);
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this.setJMenuBar(jMenuBar);
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}
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@Override
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public void actionPerformed(ActionEvent e) {
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// 获取当前被点击的条目对象
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Object obj = e.getSource();
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if (obj == reLogin) {
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dispose();
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new Login();
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} else if (obj == menu) {
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dispose();
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new StudentSystem();
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} else if (obj == exit) {
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System.exit(0);
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} else if (obj == aboutMe) {
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// 创建一个弹框对象
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JDialog jDialog = new JDialog();
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Toolkit tk = Toolkit.getDefaultToolkit();
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Image img = tk.getImage("imge\\成绩录入2.png");
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jDialog.setIconImage(img);
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// 创建一个管理图片的容器对象JLabel
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JLabel jLabel = new JLabel(new ImageIcon("imge\\about.png"));
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// 设置位置和宽高
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jLabel.setBounds(0, 0, 300, 380);
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// 把图片添加到弹框当中
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jDialog.getContentPane().add(jLabel);
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// 给弹框设置大小
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jDialog.setSize(400, 400);
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// 让弹框置顶
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jDialog.setAlwaysOnTop(true);
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// 让弹框居中
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jDialog.setLocationRelativeTo(null);
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// 弹框不关闭则无法操作下面的界面
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jDialog.setModal(true);
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// 让弹框显示出来
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jDialog.setVisible(true);
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}
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}
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// 主方法，启动Swing应用程序
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public static void main(String[] args) {
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SwingUtilities.invokeLater(() -> {
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ClassroomManager scoreManager = new ClassroomManager();
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scoreManager.setVisible(true);
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});
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}
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}
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