feat: add student page

fix: resolve login issues

src/dao/impl/StudentDAOImpl.java

@@ -15,7 +15,7 @@ public class StudentDAOImpl implements StudentDAO {
     
     @Override
     public int insert(Student student) {
-        String sql = "INSERT INTO students (student_id, name, class_name, contact, college, major, is_graduating) VALUES (?, ?, ?, ?, ?, ?, ?)";
+        String sql = "INSERT INTO students (student_id, name, class_name, contact, college, major, is_graduating, password) VALUES (?, ?, ?, ?, ?, ?, ?, ?)";
         try (Connection conn = DatabaseUtil.getConnection();
              PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
             
@@ -26,6 +26,7 @@ public class StudentDAOImpl implements StudentDAO {
             stmt.setString(5, student.getCollege());
             stmt.setString(6, student.getMajor());
             stmt.setBoolean(7, student.isGraduating());
+            stmt.setString(8, student.getPassword());
             
             int affectedRows = stmt.executeUpdate();
             if (affectedRows == 0) {
@@ -60,7 +61,7 @@ public class StudentDAOImpl implements StudentDAO {
 
     @Override
     public int update(Student student) {
-        String sql = "UPDATE students SET student_id = ?, name = ?, class_name = ?, contact = ?, college = ?, major = ?, is_graduating = ? WHERE id = ?";
+        String sql = "UPDATE students SET student_id = ?, name = ?, class_name = ?, contact = ?, college = ?, major = ?, is_graduating = ?, password = ? WHERE id = ?";
         try (Connection conn = DatabaseUtil.getConnection();
              PreparedStatement stmt = conn.prepareStatement(sql)) {
             
@@ -71,7 +72,8 @@ public class StudentDAOImpl implements StudentDAO {
             stmt.setString(5, student.getCollege());
             stmt.setString(6, student.getMajor());
             stmt.setBoolean(7, student.isGraduating());
-            stmt.setInt(8, student.getId());
+            stmt.setString(8, student.getPassword());
+            stmt.setInt(9, student.getId());
             
             return stmt.executeUpdate();
         } catch (SQLException e) {
@@ -184,6 +186,7 @@ public class StudentDAOImpl implements StudentDAO {
         student.setCollege(rs.getString("college"));
         student.setMajor(rs.getString("major"));
         student.setGraduating(rs.getBoolean("is_graduating"));
+        student.setPassword(rs.getString("password"));
         return student;
     }
 }

src/dao/impl/TeacherDAOImpl.java

@@ -15,7 +15,7 @@ public class TeacherDAOImpl implements TeacherDAO {
 
     @Override
     public int insert(Teacher teacher) {
-        String sql = "INSERT INTO teachers (teacher_id, name, department, contact) VALUES (?, ?, ?, ?)";
+        String sql = "INSERT INTO teachers (teacher_id, name, department, contact, password) VALUES (?, ?, ?, ?, ?)";
         try (Connection conn = DatabaseUtil.getConnection();
              PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
             
@@ -23,6 +23,7 @@ public class TeacherDAOImpl implements TeacherDAO {
             stmt.setString(2, teacher.getName());
             stmt.setString(3, teacher.getDepartment());
             stmt.setString(4, teacher.getContact());
+            stmt.setString(5, teacher.getPassword());
             
             int affectedRows = stmt.executeUpdate();
             if (affectedRows == 0) {
@@ -57,7 +58,7 @@ public class TeacherDAOImpl implements TeacherDAO {
 
     @Override
     public int update(Teacher teacher) {
-        String sql = "UPDATE teachers SET teacher_id = ?, name = ?, department = ?, contact = ? WHERE id = ?";
+        String sql = "UPDATE teachers SET teacher_id = ?, name = ?, department = ?, contact = ?, password = ? WHERE id = ?";
         try (Connection conn = DatabaseUtil.getConnection();
              PreparedStatement stmt = conn.prepareStatement(sql)) {
             
@@ -65,7 +66,8 @@ public class TeacherDAOImpl implements TeacherDAO {
             stmt.setString(2, teacher.getName());
             stmt.setString(3, teacher.getDepartment());
             stmt.setString(4, teacher.getContact());
-            stmt.setInt(5, teacher.getId());
+            stmt.setString(5, teacher.getPassword());
+            stmt.setInt(6, teacher.getId());
             
             return stmt.executeUpdate();
         } catch (SQLException e) {
@@ -175,6 +177,7 @@ public class TeacherDAOImpl implements TeacherDAO {
         teacher.setName(rs.getString("name"));
         teacher.setDepartment(rs.getString("department"));
         teacher.setContact(rs.getString("contact"));
+        teacher.setPassword(rs.getString("password"));
         return teacher;
     }
 }

src/gui/LoginFrame.java

@@ -1,14 +1,15 @@
 package gui;
 
+import model.Student;
+import model.Teacher;
+import service.StudentService;
+import service.TeacherService;
+import service.ServiceFactory;
+
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import util.DatabaseUtil;
 
 public class LoginFrame extends JFrame {
     private JComboBox<String> userTypeComboBox;
@@ -16,76 +17,128 @@ public class LoginFrame extends JFrame {
     private JPasswordField passwordField;
     private JButton loginButton;
     
+    private final StudentService studentService = ServiceFactory.getStudentService();
+    private final TeacherService teacherService = ServiceFactory.getTeacherService();
+
     public LoginFrame() {
-        setTitle("登录");
+        setTitle("平安校园 - 登录");
-        setSize(300, 200);
+        setSize(350, 300);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setLocationRelativeTo(null);
 
-        JPanel panel = new JPanel();
+        // 创建主面板，使用BorderLayout
-        panel.setLayout(new GridLayout(4, 2));
+        JPanel mainPanel = new JPanel(new BorderLayout(20, 20));
+        mainPanel.setBorder(BorderFactory.createEmptyBorder(20, 30, 20, 30));
 
-        panel.add(new JLabel("用户类型:"));
+        // 标题面板
+        JPanel titlePanel = new JPanel();
+        JLabel titleLabel = new JLabel("日常出校申请系统");
+        titleLabel.setFont(new Font("微软雅黑", Font.BOLD, 20));
+        titlePanel.add(titleLabel);
+
+        // 登录表单面板
+        JPanel formPanel = new JPanel(new GridBagLayout());
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+        gbc.insets = new Insets(8, 8, 8, 8);
+        gbc.weightx = 1.0;
+
+        // 用户类型
+        gbc.gridx = 0;
+        gbc.gridy = 0;
+        JLabel userTypeLabel = new JLabel("用户类型:");
+        userTypeLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(userTypeLabel, gbc);
+
+        gbc.gridx = 1;
         userTypeComboBox = new JComboBox<>(new String[]{"学生", "教师"});
-        panel.add(userTypeComboBox);
+        userTypeComboBox.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(userTypeComboBox, gbc);
 
-        panel.add(new JLabel("ID:"));
+        // ID输入框
-        idField = new JTextField();
+        gbc.gridx = 0;
-        panel.add(idField);
+        gbc.gridy = 1;
+        JLabel idLabel = new JLabel("ID:");
+        idLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(idLabel, gbc);
 
-        panel.add(new JLabel("密码:"));
+        gbc.gridx = 1;
-        passwordField = new JPasswordField();
+        idField = new JTextField(20);
-        panel.add(passwordField);
+        idField.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(idField, gbc);
 
+        // 密码输入框
+        gbc.gridx = 0;
+        gbc.gridy = 2;
+        JLabel passwordLabel = new JLabel("密码:");
+        passwordLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(passwordLabel, gbc);
+
+        gbc.gridx = 1;
+        passwordField = new JPasswordField(20);
+        passwordField.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        formPanel.add(passwordField, gbc);
+
+        // 登录按钮面板
+        JPanel buttonPanel = new JPanel();
+        buttonPanel.setBorder(BorderFactory.createEmptyBorder(10, 0, 0, 0));
         loginButton = new JButton("登录");
-        panel.add(loginButton);
+        loginButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        loginButton.setPreferredSize(new Dimension(100, 35));
+        loginButton.setBackground(new Color(52, 152, 219));
+//        loginButton.setForeground(Color.WHITE);
+        loginButton.setFocusPainted(false);
+        buttonPanel.add(loginButton);
 
-        loginButton.addActionListener(new ActionListener() {
+        // 添加事件监听
-            @Override
+        loginButton.addActionListener(e -> handleLogin());
-            public void actionPerformed(ActionEvent e) {
-                handleLogin();
-            }
-        });
 
-        add(panel);
+        // 组装界面
+        mainPanel.add(titlePanel, BorderLayout.NORTH);
+        mainPanel.add(formPanel, BorderLayout.CENTER);
+        mainPanel.add(buttonPanel, BorderLayout.SOUTH);
+
+        add(mainPanel);
     }
 
     private void handleLogin() {
         String userType = (String) userTypeComboBox.getSelectedItem();
-        String id = idField.getText();
+        String id = idField.getText().trim();
         String password = new String(passwordField.getPassword());
 
-        String tableName = "学生".equals(userType) ? "students" : "teachers";
+        if (id.isEmpty() || password.isEmpty()) {
-        String idColumnName = "学生".equals(userType) ? "student_id" : "teacher_id";
+            JOptionPane.showMessageDialog(this, "请输入ID和密码", "提示", JOptionPane.WARNING_MESSAGE);
-        String sql = "SELECT * FROM " + tableName + " WHERE " + idColumnName + " = ? AND password = ?";
+            return;
-
-        try (Connection conn = DatabaseUtil.getConnection();
-             PreparedStatement stmt = conn.prepareStatement(sql)) {
-
-            stmt.setString(1, id);
-            stmt.setString(2, password);
-
-            ResultSet rs = stmt.executeQuery();
-
-            if (rs.next()) {
-                if ("教师".equals(userType)) {
-                    TeacherMainFrame teacherMainFrame = new TeacherMainFrame();
-                    teacherMainFrame.setVisible(true);
-                } else {
-                    // TODO: 打开学生主界面
-                    JOptionPane.showMessageDialog(this, "学生登录成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
         }
+
+        if ("学生".equals(userType)) {
+            Student student = studentService.login(id, password);
+            if (student != null) {
+                StudentMainFrame studentMainFrame = new StudentMainFrame(student);
+                studentMainFrame.setVisible(true);
                 dispose();
             } else {
-                JOptionPane.showMessageDialog(this, "无效的ID或密码", "错误", JOptionPane.ERROR_MESSAGE);
+                JOptionPane.showMessageDialog(this, "无效的学号或密码", "错误", JOptionPane.ERROR_MESSAGE);
+            }
+        } else {
+            Teacher teacher = teacherService.login(id, password);
+            if (teacher != null) {
+                TeacherMainFrame teacherMainFrame = new TeacherMainFrame();
+                teacherMainFrame.setVisible(true);
+                dispose();
+            } else {
+                JOptionPane.showMessageDialog(this, "无效的教师ID或密码", "错误", JOptionPane.ERROR_MESSAGE);
             }
-        } catch (SQLException e) {
-            e.printStackTrace();
-            JOptionPane.showMessageDialog(this, "数据库错误：" + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
         }
     }
 
     public static void main(String[] args) {
+        try {
+            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        
         SwingUtilities.invokeLater(() -> {
             LoginFrame loginFrame = new LoginFrame();
             loginFrame.setVisible(true);

src/gui/RequestDetailDialog.java

@@ -14,11 +14,13 @@ public class RequestDetailDialog extends JDialog {
     private final LeaveRequestService leaveRequestService;
     private LeaveRequest currentRequest;
     private Runnable onApprovalComplete;  // 添加回调接口
+    private boolean isStudent;  // 添加标识是否为学生
 
-    public RequestDetailDialog(JFrame parent, int requestId, Runnable onApprovalComplete) {
+    public RequestDetailDialog(JFrame parent, int requestId, Runnable onApprovalComplete, boolean isStudent) {
         super(parent, "请假详情", true);
         this.leaveRequestService = ServiceFactory.getLeaveRequestService();
         this.onApprovalComplete = onApprovalComplete;
+        this.isStudent = isStudent;
         
         // 根据ID获取请假信息
         this.currentRequest = leaveRequestService.getLeaveRequestById(requestId);
@@ -78,6 +80,33 @@ public class RequestDetailDialog extends JDialog {
 
         // 审批按钮
         JPanel actionButtonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 20, 10));
+        
+        if (isStudent) {
+            // 学生只能看到撤销按钮，且仅在待审批状态下可用
+            if (currentRequest.getStatus() == ApprovalStatus.PENDING) {
+                JButton cancelButton = new JButton("撤销申请");
+                cancelButton.setPreferredSize(new Dimension(100, 30));
+                cancelButton.setBackground(new Color(231, 76, 60));
+                cancelButton.addActionListener(e -> {
+                    int confirm = JOptionPane.showConfirmDialog(
+                        this,
+                        "确定要撤销这条请假申请吗？",
+                        "确认撤销",
+                        JOptionPane.YES_NO_OPTION
+                    );
+                    if (confirm == JOptionPane.YES_OPTION) {
+                        leaveRequestService.cancelLeaveRequest(currentRequest.getId());
+                        dispose();
+                        if (onApprovalComplete != null) {
+                            onApprovalComplete.run();
+                        }
+                        JOptionPane.showMessageDialog(getParent(), "申请已撤销", "提示", JOptionPane.INFORMATION_MESSAGE);
+                    }
+                });
+                actionButtonPanel.add(cancelButton);
+            }
+        } else {
+            // 教师可以看到通过和驳回按钮
             JButton approveButton = new JButton("通过");
             JButton rejectButton = new JButton("驳回");
             
@@ -92,19 +121,12 @@ public class RequestDetailDialog extends JDialog {
             
             // 设置按钮样式
             approveButton.setBackground(new Color(39, 174, 96));
-        // approveButton.setForeground(Color.WHITE);
-        
             rejectButton.setBackground(new Color(231, 76, 60));
-        // rejectButton.setForeground(Color.WHITE);
             
             actionButtonPanel.add(approveButton);
             actionButtonPanel.add(rejectButton);
 
-        // 添加按钮面板
+            // 添加教师审批按钮的事件监听
-        gbc.insets = new Insets(20, 10, 10, 10);
-        mainPanel.add(actionButtonPanel, gbc);
-
-        // 添加事件监听
             approveButton.addActionListener(e -> {
                 // 创建一个自定义对话框
                 JDialog approveDialog = new JDialog(this, "审批意见", true);
@@ -201,6 +223,11 @@ public class RequestDetailDialog extends JDialog {
                 rejectDialog.add(inputPanel);
                 rejectDialog.setVisible(true);
             });
+        }
+
+        // 添加按钮面板
+        gbc.insets = new Insets(20, 10, 10, 10);
+        mainPanel.add(actionButtonPanel, gbc);
 
         // 添加滚动面板
         JScrollPane scrollPane = new JScrollPane(mainPanel);

src/gui/StudentMainFrame.java

@@ -0,0 +1,344 @@
+package gui;
+
+import model.ApprovalStatus;
+import model.LeaveRequest;
+import model.Student;
+import service.LeaveRequestService;
+import service.ServiceFactory;
+
+import javax.swing.*;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.table.TableColumnModel;
+import java.awt.*;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+
+public class StudentMainFrame extends JFrame {
+    private final LeaveRequestService leaveRequestService;
+    private final Student currentStudent;
+    private JTable requestTable;
+    private DefaultTableModel tableModel;
+    private int currentPage = 1;
+    private static final int PAGE_SIZE = 10;
+
+    public StudentMainFrame(Student student) {
+        this.currentStudent = student;
+        leaveRequestService = ServiceFactory.getLeaveRequestService();
+        initComponents();
+        loadLeaveRequests();
+    }
+
+    private void initComponents() {
+        setTitle("平安校园 - 日常出校申请");
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setSize(400, 600);
+        setLocationRelativeTo(null);
+
+        // 主面板
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
+
+        // 顶部面板
+        JPanel topPanel = new JPanel(new BorderLayout());
+        
+        // 标题
+        JLabel titleLabel = new JLabel("日常出校申请记录", SwingConstants.CENTER);
+        titleLabel.setFont(new Font("微软雅黑", Font.BOLD, 18));
+        topPanel.add(titleLabel, BorderLayout.CENTER);
+
+        // 学生信息和申请按钮面板
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 20, 5));
+        
+        // 添加学生信息
+        JLabel studentInfoLabel = new JLabel(String.format("%s - %s", currentStudent.getClassName(), currentStudent.getName()));
+        studentInfoLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        buttonPanel.add(studentInfoLabel);
+
+        // 申请按钮
+        JButton newRequestButton = new JButton("日常出校申请");
+        newRequestButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
+        newRequestButton.setBackground(new Color(52, 152, 219));
+        // newRequestButton.setForeground(Color.WHITE);
+        newRequestButton.setFocusPainted(false);
+        newRequestButton.addActionListener(e -> showNewRequestDialog());
+        
+        buttonPanel.add(newRequestButton);
+        topPanel.add(buttonPanel, BorderLayout.NORTH);
+
+        // 表格
+        String[] columnNames = {"ID", "状态", "申请时间", "外出开始时间", "外出结束时间", "外出事由"};
+        tableModel = new DefaultTableModel(columnNames, 0) {
+            @Override
+            public boolean isCellEditable(int row, int column) {
+                return false;
+            }
+        };
+        requestTable = new JTable(tableModel);
+        requestTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+        
+        // 设置表格样式
+        requestTable.setRowHeight(30);
+        requestTable.getTableHeader().setFont(new Font("微软雅黑", Font.BOLD, 12));
+        requestTable.setFont(new Font("微软雅黑", Font.PLAIN, 12));
+
+        // 设置列宽
+        TableColumnModel columnModel = requestTable.getColumnModel();
+        columnModel.getColumn(0).setPreferredWidth(40);   // ID
+        columnModel.getColumn(1).setPreferredWidth(60);   // 状态
+        columnModel.getColumn(2).setPreferredWidth(100);  // 申请时间
+        columnModel.getColumn(3).setPreferredWidth(100);  // 开始时间
+        columnModel.getColumn(4).setPreferredWidth(100);  // 结束时间
+        columnModel.getColumn(5).setPreferredWidth(100);  // 外出事由
+
+        // 添加表格点击事件
+        requestTable.addMouseListener(new java.awt.event.MouseAdapter() {
+            @Override
+            public void mouseClicked(java.awt.event.MouseEvent evt) {
+                if (evt.getClickCount() == 2) {
+                    int row = requestTable.getSelectedRow();
+                    if (row != -1) {
+                        showRequestDetails(row);
+                    }
+                }
+            }
+        });
+
+        // 分页控制
+        JPanel pagePanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
+        JButton prevButton = new JButton("上一页");
+        JButton nextButton = new JButton("下一页");
+        JLabel pageLabel = new JLabel("1/1");
+        pagePanel.add(prevButton);
+        pagePanel.add(pageLabel);
+        pagePanel.add(nextButton);
+
+        // 分页按钮事件
+        prevButton.addActionListener(e -> {
+            if (currentPage > 1) {
+                currentPage--;
+                loadLeaveRequests();
+            }
+        });
+        
+        nextButton.addActionListener(e -> {
+            List<LeaveRequest> requests = leaveRequestService.getStudentLeaveRequests(currentStudent.getId());
+            int totalPages = (requests.size() + PAGE_SIZE - 1) / PAGE_SIZE;
+            if (currentPage < totalPages) {
+                currentPage++;
+                loadLeaveRequests();
+            }
+        });
+
+        // 布局
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+        mainPanel.add(new JScrollPane(requestTable), BorderLayout.CENTER);
+        mainPanel.add(pagePanel, BorderLayout.SOUTH);
+
+        add(mainPanel);
+    }
+
+    private void showNewRequestDialog() {
+        JDialog dialog = new JDialog(this, "新建日常出校申请", true);
+        dialog.setSize(400, 500);
+        dialog.setLocationRelativeTo(this);
+
+        JPanel panel = new JPanel(new GridBagLayout());
+        panel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+        gbc.insets = new Insets(5, 5, 5, 5);
+
+        // 开始时间
+        gbc.gridx = 0;
+        gbc.gridy = 0;
+        panel.add(new JLabel("开始时间:"), gbc);
+
+        gbc.gridx = 1;
+        SpinnerDateModel startModel = new SpinnerDateModel();
+        JSpinner startTimeSpinner = new JSpinner(startModel);
+        startTimeSpinner.setEditor(new JSpinner.DateEditor(startTimeSpinner, "yyyy-MM-dd HH:mm"));
+        panel.add(startTimeSpinner, gbc);
+
+        // 结束时间
+        gbc.gridx = 0;
+        gbc.gridy = 1;
+        panel.add(new JLabel("结束时间:"), gbc);
+
+        gbc.gridx = 1;
+        SpinnerDateModel endModel = new SpinnerDateModel();
+        JSpinner endTimeSpinner = new JSpinner(endModel);
+        endTimeSpinner.setEditor(new JSpinner.DateEditor(endTimeSpinner, "yyyy-MM-dd HH:mm"));
+        panel.add(endTimeSpinner, gbc);
+
+        // 外出地址
+        gbc.gridx = 0;
+        gbc.gridy = 2;
+        panel.add(new JLabel("外出地址:"), gbc);
+
+        gbc.gridx = 1;
+        JTextField locationField = new JTextField(20);
+        panel.add(locationField, gbc);
+
+        // 事由类型
+        gbc.gridx = 0;
+        gbc.gridy = 3;
+        panel.add(new JLabel("事由类型:"), gbc);
+
+        gbc.gridx = 1;
+        String[] reasonTypes = {"学习", "就医", "办事", "活动", "返乡", "实习", "其他"};
+        JComboBox<String> reasonTypeCombo = new JComboBox<>(reasonTypes);
+        panel.add(reasonTypeCombo, gbc);
+
+        // 详细事由
+        gbc.gridx = 0;
+        gbc.gridy = 4;
+        panel.add(new JLabel("详细事由:"), gbc);
+
+        gbc.gridx = 1;
+        JTextArea reasonArea = new JTextArea(4, 20);
+        reasonArea.setLineWrap(true);
+        reasonArea.setWrapStyleWord(true);
+        JScrollPane scrollPane = new JScrollPane(reasonArea);
+        panel.add(scrollPane, gbc);
+
+        // 是否离津
+        gbc.gridx = 0;
+        gbc.gridy = 5;
+        panel.add(new JLabel("是否离津:"), gbc);
+
+        gbc.gridx = 1;
+        JCheckBox leavingCityCheckBox = new JCheckBox();
+        panel.add(leavingCityCheckBox, gbc);
+
+        // 按钮面板
+        gbc.gridx = 0;
+        gbc.gridy = 6;
+        gbc.gridwidth = 2;
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
+        JButton submitButton = new JButton("提交");
+        JButton cancelButton = new JButton("取消");
+
+        submitButton.addActionListener(e -> {
+            Date startTime = (Date) startTimeSpinner.getValue();
+            Date endTime = (Date) endTimeSpinner.getValue();
+            String location = locationField.getText().trim();
+            String reasonType = (String) reasonTypeCombo.getSelectedItem();
+            String reasonDetail = reasonArea.getText().trim();
+            boolean isLeavingCity = leavingCityCheckBox.isSelected();
+
+            if (location.isEmpty()) {
+                JOptionPane.showMessageDialog(dialog, "请填写外出地址", "提示", JOptionPane.WARNING_MESSAGE);
+                return;
+            }
+
+            if (reasonDetail.isEmpty()) {
+                JOptionPane.showMessageDialog(dialog, "请填写详细事由", "提示", JOptionPane.WARNING_MESSAGE);
+                return;
+            }
+
+            if (startTime.after(endTime)) {
+                JOptionPane.showMessageDialog(dialog, "开始时间不能晚于结束时间", "提示", JOptionPane.WARNING_MESSAGE);
+                return;
+            }
+
+            LeaveRequest request = new LeaveRequest();
+            request.setStudent(currentStudent);
+            request.setStartTime(startTime);
+            request.setEndTime(endTime);
+            request.setLocation(location);
+            request.setReasonType(reasonType);
+            request.setReasonDetail(reasonDetail);
+            request.setLeavingCity(isLeavingCity);
+            request.setStatus(ApprovalStatus.PENDING);
+            request.setRequestTime(new Date());
+
+            // 计算请假时长（小时）
+            double duration = (endTime.getTime() - startTime.getTime()) / (1000.0 * 60 * 60);
+            request.setDuration(duration);
+
+            if (leaveRequestService.submitLeaveRequest(request)) {
+                loadLeaveRequests();
+                dialog.dispose();
+                JOptionPane.showMessageDialog(this, "申请提交成功", "提示", JOptionPane.INFORMATION_MESSAGE);
+            } else {
+                JOptionPane.showMessageDialog(this, "申请提交失败，请稍后重试", "错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+
+        cancelButton.addActionListener(e -> dialog.dispose());
+
+        buttonPanel.add(submitButton);
+        buttonPanel.add(cancelButton);
+        panel.add(buttonPanel, gbc);
+
+        dialog.add(panel);
+        dialog.setVisible(true);
+    }
+
+    private void showRequestDetails(int row) {
+        Long requestId = (Long) tableModel.getValueAt(row, 0);
+        RequestDetailDialog dialog = new RequestDetailDialog(this, requestId.intValue(), this::loadLeaveRequests, true);
+        dialog.setVisible(true);
+    }
+
+    private void loadLeaveRequests() {
+        tableModel.setRowCount(0);
+        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
+        
+        List<LeaveRequest> requests = leaveRequestService.getStudentLeaveRequests(currentStudent.getId());
+        
+        // Calculate total pages
+        int totalRequests = requests.size();
+        int totalPages = (totalRequests + PAGE_SIZE - 1) / PAGE_SIZE;
+        
+        // Update page label
+        Component[] components = getContentPane().getComponents();
+        for (Component comp : components) {
+            if (comp instanceof JPanel) {
+                JPanel panel = (JPanel) comp;
+                for (Component innerComp : panel.getComponents()) {
+                    if (innerComp instanceof JPanel && ((JPanel) innerComp).getComponentCount() == 3) {
+                        JPanel pagePanel = (JPanel) innerComp;
+                        JLabel pageLabel = (JLabel) pagePanel.getComponent(1);
+                        pageLabel.setText(currentPage + "/" + totalPages);
+                        break;
+                    }
+                }
+            }
+        }
+        
+        // Get current page's requests
+        int fromIndex = (currentPage - 1) * PAGE_SIZE;
+        int toIndex = Math.min(fromIndex + PAGE_SIZE, totalRequests);
+        List<LeaveRequest> pageRequests = fromIndex < totalRequests ? requests.subList(fromIndex, toIndex) : requests;
+        
+        for (LeaveRequest request : pageRequests) {
+            tableModel.addRow(new Object[]{
+                Long.valueOf(request.getId()),  
+                request.getStatus().getDescription(),
+                sdf.format(request.getRequestTime()),
+                sdf.format(request.getStartTime()),
+                sdf.format(request.getEndTime()),
+                request.getReasonDetail()
+            });
+        }
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            try {
+                // 使用实际学生数据
+                Student student = ServiceFactory.getStudentService().login("2023208145", "123456");
+                if (student != null) {
+                    new StudentMainFrame(student).setVisible(true);
+                } else {
+                    JOptionPane.showMessageDialog(null, "无法加载学生信息", "错误", JOptionPane.ERROR_MESSAGE);
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+                JOptionPane.showMessageDialog(null, "系统错误: " + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+    }
+}

src/gui/TeacherMainFrame.java

@@ -229,7 +229,8 @@ public class TeacherMainFrame extends JFrame {
         RequestDetailDialog dialog = new RequestDetailDialog(
             this, 
             ((Number)tableModel.getValueAt(row, 0)).intValue(),  // 获取ID
-            () -> loadLeaveRequests()  // 添加刷新列表的回调
+            () -> loadLeaveRequests(),  // 添加刷新列表的回调
+            false  // 教师视角
         );
         dialog.setVisible(true);
     }

src/model/Student.java

@@ -12,6 +12,7 @@ public class Student {
     private String college;      // 学院
     private String major;        // 专业
     private boolean isGraduating; // 是否毕业班
+    private String password;      // 登录密码
 
     // Constructors
     public Student() {}
@@ -26,6 +27,17 @@ public class Student {
         this.isGraduating = isGraduating;
     }
 
+    public Student(String studentId, String name, String className, String contact, String college, String major, boolean isGraduating, String password) {
+        this.studentId = studentId;
+        this.name = name;
+        this.className = className;
+        this.contact = contact;
+        this.college = college;
+        this.major = major;
+        this.isGraduating = isGraduating;
+        this.password = password;
+    }
+
     // Getters and Setters
     public int getId() {
         return id;
@@ -90,4 +102,12 @@ public class Student {
     public void setGraduating(boolean graduating) {
         isGraduating = graduating;
     }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
 }

src/model/Teacher.java

@@ -9,6 +9,7 @@ public class Teacher {
     private String name;         // 教师姓名
     private String department;   // 所属部门
     private String contact;      // 联系方式
+    private String password;     // 登录密码
 
     // Constructors
     public Teacher() {}
@@ -20,6 +21,14 @@ public class Teacher {
         this.contact = contact;
     }
 
+    public Teacher(String teacherId, String name, String department, String contact, String password) {
+        this.teacherId = teacherId;
+        this.name = name;
+        this.department = department;
+        this.contact = contact;
+        this.password = password;
+    }
+
     // Getters and Setters
     public int getId() {
         return id;
@@ -60,4 +69,12 @@ public class Teacher {
     public void setContact(String contact) {
         this.contact = contact;
     }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
 }

src/service/LeaveRequestService.java

@@ -7,6 +7,7 @@ import model.Student;
 import model.ApprovalStatus;
 import java.util.Date;
 import java.util.List;
+import java.util.Calendar;
 
 /**
  * 请假申请服务类
@@ -24,11 +25,13 @@ public class LeaveRequestService {
         // 检查学生是否存在
         Student student = studentService.getStudentById(request.getStudent().getId());
         if (student == null) {
+            System.out.println("提交请假失败：学生不存在，ID=" + request.getStudent().getId());
             return false;
         }
 
         // 检查请假时间是否合理
         if (!isValidLeaveTime(request.getStartTime(), request.getEndTime())) {
+            System.out.println("提交请假失败：请假时间不合理，开始时间=" + request.getStartTime() + "，结束时间=" + request.getEndTime());
             return false;
         }
 
@@ -36,7 +39,13 @@ public class LeaveRequestService {
         request.setStatus(ApprovalStatus.PENDING);
         request.setRequestTime(new Date());
 
-        return leaveRequestDAO.insert(request) > 0;
+        int result = leaveRequestDAO.insert(request);
+        if (result == 0) {
+            System.out.println("提交请假失败：数据库插入失败");
+            return false;
+        }
+        System.out.println("提交请假成功：ID=" + request.getId());
+        return true;
     }
 
     /**
@@ -96,6 +105,27 @@ public class LeaveRequestService {
         return leaveRequestDAO.findById(requestId);
     }
 
+    /**
+     * 撤销请假申请
+     * @param requestId 请假申请ID
+     * @return 是否撤销成功
+     */
+    public boolean cancelLeaveRequest(int requestId) {
+        // 检查请假申请是否存在
+        LeaveRequest request = leaveRequestDAO.findById(requestId);
+        if (request == null) {
+            return false;
+        }
+
+        // 检查是否可以撤销（只有待审批状态可以撤销）
+        if (request.getStatus() != ApprovalStatus.PENDING) {
+            return false;
+        }
+
+        // 删除请假申请
+        return leaveRequestDAO.deleteById(requestId) > 0;
+    }
+
     /**
      * 检查请假时间是否合理
      * @param startTime 开始时间
@@ -103,19 +133,28 @@ public class LeaveRequestService {
      * @return 是否合理
      */
     private boolean isValidLeaveTime(Date startTime, Date endTime) {
-        // 开始时间不能为空
+        // 开始时间和结束时间不能为空
         if (startTime == null || endTime == null) {
             return false;
         }
 
         // 结束时间必须在开始时间之后
-        if (endTime.before(startTime)) {
+        if (endTime.before(startTime) || endTime.equals(startTime)) {
             return false;
         }
 
-        // 开始时间不能是过去的时间
+        // 开始时间不能是过去24小时以前的时间
-        Date now = new Date();
+        Calendar cal = Calendar.getInstance();
-        if (startTime.before(now)) {
+        cal.add(Calendar.HOUR, -24);
+        Date oneDayAgo = cal.getTime();
+        
+        if (startTime.before(oneDayAgo)) {
+            return false;
+        }
+
+        // 请假时长不能超过30天
+        long durationInDays = (endTime.getTime() - startTime.getTime()) / (1000 * 60 * 60 * 24);
+        if (durationInDays > 30) {
             return false;
         }
 

src/service/StudentService.java

@@ -95,4 +95,25 @@ public class StudentService {
     public List<Student> searchStudentsByName(String name) {
         return studentDAO.findByNameLike(name);
     }
+
+    /**
+     * 学生登录
+     * @param studentId 学号
+     * @param password 密码
+     * @return 登录成功返回学生信息，失败返回null
+     */
+    public Student login(String studentId, String password) {
+        Student student = studentDAO.findByStudentId(studentId);
+        System.out.println("Login attempt - StudentID: " + studentId);
+        System.out.println("Student found: " + (student != null));
+        if (student != null) {
+            System.out.println("Stored password: " + student.getPassword());
+            System.out.println("Input password: " + password);
+            System.out.println("Password match: " + password.equals(student.getPassword()));
+        }
+        if (student != null && password.equals(student.getPassword())) {
+            return student;
+        }
+        return null;
+    }
 }

src/service/TeacherService.java

@@ -95,4 +95,25 @@ public class TeacherService {
     public List<Teacher> searchTeachersByName(String name) {
         return teacherDAO.findByNameLike(name);
     }
+
+    /**
+     * 教师登录
+     * @param teacherId 教师工号
+     * @param password 密码
+     * @return 登录成功返回教师信息，失败返回null
+     */
+    public Teacher login(String teacherId, String password) {
+        Teacher teacher = teacherDAO.findByTeacherId(teacherId);
+        System.out.println("Login attempt - TeacherID: " + teacherId);
+        System.out.println("Teacher found: " + (teacher != null));
+        if (teacher != null) {
+            System.out.println("Stored password: " + teacher.getPassword());
+            System.out.println("Input password: " + password);
+            System.out.println("Password match: " + password.equals(teacher.getPassword()));
+        }
+        if (teacher != null && password.equals(teacher.getPassword())) {
+            return teacher;
+        }
+        return null;
+    }
 }