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107 lines
3.7 KiB
107 lines
3.7 KiB
package view;
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import controller.NavigationController;
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import controller.UserController;
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import model.User;
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import javax.swing.*;
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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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public class LoginView extends JFrame {
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private JTextField usernameField; // 新增：用户名字段
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private JPasswordField passwordField;
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private UserController userController;
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public LoginView() {
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userController = new UserController();
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initializeUI();
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}
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private void initializeUI() {
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setTitle("数学学习软件 - 登录");
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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setSize(400, 300);
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setLocationRelativeTo(null);
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setResizable(false);
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JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
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mainPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
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// Title
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JLabel titleLabel = new JLabel("用户登录", JLabel.CENTER);
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titleLabel.setFont(new Font("微软雅黑", Font.BOLD, 24));
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mainPanel.add(titleLabel, BorderLayout.NORTH);
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// Form panel - 修改为用户名和密码
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JPanel formPanel = new JPanel(new GridLayout(3, 2, 10, 10));
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JLabel usernameLabel = new JLabel("用户名:"); // 修改：改为用户名
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usernameLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
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usernameField = new JTextField(); // 初始化用户名字段
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JLabel passwordLabel = new JLabel("密码:");
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passwordLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
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passwordField = new JPasswordField();
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formPanel.add(usernameLabel);
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formPanel.add(usernameField);
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formPanel.add(passwordLabel);
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formPanel.add(passwordField);
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// Buttons
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JPanel buttonPanel = new JPanel(new FlowLayout());
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JButton loginButton = new JButton("登录");
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JButton registerButton = new JButton("注册");
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loginButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
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registerButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
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buttonPanel.add(loginButton);
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buttonPanel.add(registerButton);
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formPanel.add(new JLabel()); // Empty cell
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formPanel.add(buttonPanel);
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mainPanel.add(formPanel, BorderLayout.CENTER);
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// Add action listeners
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loginButton.addActionListener(new LoginAction());
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registerButton.addActionListener(e -> {
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NavigationController.showRegisterView();
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});
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// Enter key support
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usernameField.addActionListener(new LoginAction());
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passwordField.addActionListener(new LoginAction());
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add(mainPanel);
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}
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private class LoginAction implements ActionListener {
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@Override
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public void actionPerformed(ActionEvent e) {
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String username = usernameField.getText().trim();
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String password = new String(passwordField.getPassword());
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if (username.isEmpty() || password.isEmpty()) {
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JOptionPane.showMessageDialog(LoginView.this,
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"请输入用户名和密码", "错误", JOptionPane.ERROR_MESSAGE);
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return;
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}
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User user = userController.login(username, password);
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if (user != null) {
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JOptionPane.showMessageDialog(LoginView.this,
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"登录成功！", "成功", JOptionPane.INFORMATION_MESSAGE);
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// 修改：传递用户信息到主界面
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NavigationController.showMainView(user);
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} else {
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JOptionPane.showMessageDialog(LoginView.this,
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"用户名或密码错误", "错误", JOptionPane.ERROR_MESSAGE);
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}
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}
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}
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}
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