java实训第六天

应用程序类

package qingjiabo.student.app;
import qingjiabo.student.gui.*;
public class Application {

/**
 * 登录用户标识符
 */
public static int id;
/**
 * 登录用户名
 */
public static String username;
/**
 * 登录用户密码
 */
public static String password;
/**
 * 登录窗口
 */
public static LoginFrame loginFrame;
/**
 * 主窗口
 */
public static MainFrame mainFrame;
/**
 * 注册窗口
 */
public static RegisterFrame registerFrame;

}

窗口界面类（JFrame）

GUI：Graphical User Interface 图形用户界面

创建net.hw.student.gui包，在里面先创建三个界面类：LoginFrame、MainFrame与RegisterFrame

（1）LoginFrame

package qingjiabo.student.gui;

import qingjiabo.student.app.Application;
import qingjiabo.student.bean.Status;
import qingjiabo.student.bean.User;
import qingjiabo.student.service.StatusService;
import qingjiabo.student.service.StudentService;
import qingjiabo.student.service.UserService;
import qingjiabo.student.service.impl.StatusServiceImpl;
import qingjiabo.student.service.impl.UserServiceImpl;
import javax.swing.*;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class LoginFrame extends JFrame {
private String username;
private String password;

private JLabel lblUsername;
private JLabel lblPassword;
private JTextField txtUsername;
private JPasswordField txtPassword;

private JButton btnOK;
private JButton btnCancel;
private JButton btnRegister;

private JPanel panel, panel1, panel2, panel3;

/**
 * 构造方法
 *
 * @param title
 */
public LoginFrame(String title) {
    super(title);
    initGUI();
}
/**
 * 初始化图形用户界面
 */
private void initGUI() {
    // 实例化组件（面板与控件）
    panel = (JPanel) getContentPane();
    panel1 = new JPanel();
    panel2 = new JPanel();
    panel3 = new JPanel();

    lblUsername = new JLabel("用户名：");
    lblPassword = new JLabel("密    码：");
    txtUsername = new JTextField(15);
    txtPassword = new JPasswordField(15);
    btnOK = new JButton("确定[O]");
    btnCancel = new JButton("取消[C]");
    btnRegister = new JButton("注册[R]");

    // 将控件添加到三个小面板
    panel1.add(lblUsername);
    panel1.add(txtUsername);
    panel2.add(lblPassword);
    panel2.add(txtPassword);
    panel3.add(btnOK);
    panel3.add(btnCancel);
    panel3.add(btnRegister);

    // 设置主面板为三行一列的网格布局
    panel.setLayout(new GridLayout(3, 1));
    // 将三个小面板依次添加到主面板
    panel.add(panel1);
    panel.add(panel2);
    panel.add(panel3);

    // 设置按钮热键字母
    btnOK.setMnemonic(KeyEvent.VK_O);
    btnCancel.setMnemonic(KeyEvent.VK_C);
    btnRegister.setMnemonic(KeyEvent.VK_R);
    // 设置密码框回显字符
    txtPassword.setEchoChar('*');
    
    // 设置窗口大小
    setSize(250, 200);
    // 设置窗口屏幕居中
    setLocationRelativeTo(null);
    // 设置窗口不可调整大小
    setResizable(false);
    //设置窗口刚好容纳主组键
    pack();
    // 设置窗口可见
    setVisible(true);
    // 设置窗口默认关闭操作
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //【确定】按钮单击事件处理

    btnOK.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            login();
        }
    });

    // 【确定】按钮按键事件处理
    btnOK.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            // 按下回车键，调用登录方法
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                login();
            }
        }
    });

    // 【用户名】文本框按键事件处理
    txtUsername.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            // 判断是否按下回车键
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                // 让密码文本框获取焦点
                txtPassword.requestFocus();
            }
        }
    });

    // 【注册】按钮单击事件处理
    btnRegister.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            // 隐藏登录窗口
            Application.loginFrame.setVisible(false);
            // 创建注册窗口
            Application.registerFrame = new RegisterFrame("用户注册");
        }
    });

    // 【密码】文本框按键事件处理
    txtPassword.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            // 判断是否按了回车键
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                login();
            }
        }
    });

    // 【取消】按钮单击事件处理
    btnCancel.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            System.exit(0);
        }
    });
}

/**
 * 登录方法
 */
private void login() {
    // 获取用户名
    username = txtUsername.getText().trim();
    // 获取密码
    password = new String(txtPassword.getPassword());

    // 创建用户服务对象
    UserService userService = new UserServiceImpl();
    // 调用登录方法，返回登录用户对象
    User user = userService.login(username, password);

    // 判断登录用户是否为空，决定登录是否成功
    if (user != null) {
        // 隐藏登录窗口
        Application.loginFrame.setVisible(false);
        // 定义状态服务对象
        StatusService statusService = new StatusServiceImpl();
        // 获取状态对象
        Status status = statusService.findSTatusById(1);
        // 保存登录用户的信息
        Application.id = user.getId();
        Application.username = user.getUsername();
        Application.password = user.getPassword();
        // 提示用户登录成功
        JOptionPane.showMessageDialog(null,
                "欢迎使用学生信息管理系统" + status.getVersion(),
                "用户登录", JOptionPane.INFORMATION_MESSAGE);
        // 显示系统主窗口
        Application.mainFrame = new MainFrame("");
        // 释放登录窗口
        Application.loginFrame.dispose();
    } else {
        // 隐藏登录窗口
        Application.loginFrame.setVisible(false);
        // 提示用户登录失败，要重新输入用户名或密码
        JOptionPane.showMessageDialog(null,
                "用户名或密码错误，请重新输入！",
                "用户登录", JOptionPane.ERROR_MESSAGE);
        // 显示登录窗口
        Application.loginFrame.setVisible(true);
        // 用户名文本框内容全选
        txtUsername.selectAll();
        // 密码文本框内容全选
        txtPassword.selectAll();
        // 用户名文本框获取焦点
        txtUsername.requestFocus();
    }
}

/**
 * 主方法
 *
 * @param args
 */
public static void main(String[] args) {
    Application.loginFrame = new LoginFrame("用户登录");
}

}

（2）MainFrame

package qingjiabo.student.gui;

import qingjiabo.student.app.Application;
import qingjiabo.student.bean.Status;
import qingjiabo.student.service.StatusService;
import qingjiabo.student.service.impl.StatusServiceImpl;

import javax.swing.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import java.awt.;
import java.awt.event.;
import java.io.IOException;

/**

• 功能：主界面窗口

• 作者：卿加波

• 时间：2019,、07、01
  */
  public class MainFrame extends JFrame {

  /**

  • 菜单部分
    /
    private JMenuBar mnbMain;
    /*
  • 设置菜单
    /
    private JMenu mnuSet;
    private JMenuItem mniSetCollegeInfo;
    private JMenuItem mniSetStatusBar;
    private JMenuItem mniChangePassword;
    private JMenuItem mniExit;
    /*
  • 操作菜单
    /
    private JMenu mnuOperate;
    private JMenuItem mniAddStudent;
    private JMenuItem mniBrowseStudent;
    private JMenuItem mniEditStudent;
    /*
  • 删除菜单
    /
    private JMenu mnuDelStu;
    private JMenuItem mniDelStudentById;
    private JMenuItem mniDelStudentsByClass;
    private JMenuItem mniDelStudentsByDepartment;
    /*
  • 查询菜单
    /
    private JMenu mnuFind;
    private JMenuItem mniFindStudentById;
    private JMenuItem mniFindStudentsByName;
    private JMenuItem mniFindStudentsByClass;
    private JMenuItem mniFindStudentsByDepartment;
    /*
  • 统计菜单
    /
    private JMenu mnuCount;
    private JMenuItem mniCountStudentsBySex;
    private JMenuItem mniCountStudentsByClass;
    private JMenuItem mniCountStudentsByDepartment;
    /*
  • 帮助菜单
    /
    private JMenu mnuHelp;
    private JMenuItem mniHelp;
    private JMenuItem mniAbout;
    /*
  • 面板
    /
    private JPanel panel;
    private JPanel pnlCenter;
    private JPanel pnlSouth;
    /*
  • 状态栏标签
    /
    private JLabel lblStatusBar;
    /*
  • 背景标签
    */
    private JLabel lblBackground;

  /**

  • 图标对象
    /
    private ImageIcon imgCollege;
    private ImageIcon imgExit;
    private ImageIcon imgPassword;
    private ImageIcon imgQuery;
    private ImageIcon imgBrowse;
    private ImageIcon imgCount;
    private ImageIcon imgBackground;
    /*
  • 工具栏
    /
    private JToolBar toolbar;
    /*
  • 按钮
    /
    private JButton btnSetCollege;
    private JButton btnChangePassword;
    private JButton btnFindStudentById;
    private JButton btnExit;
    private JButton btnBrowseStudent;
    private JButton btnCountByDepartment;
    /*
  • 状态对象
    /
    private Status status;
    /*
  • 状态服务对象
    */
    private StatusService statusService;

  /**

  • 构造方法
  • @param title
    */
    public MainFrame(String title) {
    super(title);
    initGUI();
    }

  /**

  • 初始化图形用户界面
    */
    private void initGUI() {
    // 创建主菜单
    mnbMain = new JMenuBar();

    // 创建【设置】菜单及其菜单项
    mnuSet = new JMenu(“系统设置[S]”);
    mnuSet.setMnemonic(KeyEvent.VK_S);
    mniSetCollegeInfo = new JMenuItem(“学校信息”);
    mniSetStatusBar = new JMenuItem(“状态栏信息”);
    mniChangePassword = new JMenuItem(“修改密码”);
    mniExit = new JMenuItem(“退出系统”);

    // 创建【操作】菜单及其菜单项
    mnuOperate = new JMenu(“数据操作[O]”);
    mnuOperate.setMnemonic(KeyEvent.VK_O);
    mniAddStudent = new JMenuItem(“增加学生表记录”);
    mnuDelStu = new JMenu(“删除学生表记录”);
    mniEditStudent = new JMenuItem(“编辑学生表记录”);
    mniBrowseStudent = new JMenuItem(“浏览学生表记录”);

    // 创建【删除学生表记录】的子菜单
    mniDelStudentById = new JMenuItem(“按学号删除”);
    mniDelStudentsByClass = new JMenuItem(“按班级删除”);
    mniDelStudentsByDepartment = new JMenuItem(“按系部删除”);

    // 创建【查询】菜单及其菜单项
    mnuFind = new JMenu(“查询学生[Q]”);
    mnuFind.setMnemonic(KeyEvent.VK_Q);
    mniFindStudentById = new JMenuItem(“按学号查询”);
    mniFindStudentsByName = new JMenuItem(“按姓名查询”);
    mniFindStudentsByClass = new JMenuItem(“按班级查询”);
    mniFindStudentsByDepartment = new JMenuItem(“按系部查询”);

    // 创建【统计】菜单及其菜单项
    mnuCount = new JMenu(“人数统计[C]”);
    mnuCount.setMnemonic(KeyEvent.VK_C);
    mniCountStudentsBySex = new JMenuItem(“按性别统计”);
    mniCountStudentsByClass = new JMenuItem(“按班级统计”);
    mniCountStudentsByDepartment = new JMenuItem(“按系部统计”);

    // 创建【帮助】菜单及其菜单项
    mnuHelp = new JMenu(“帮助[H]”);
    mnuHelp.setMnemonic(KeyEvent.VK_H);
    mniHelp = new JMenuItem(“帮助”);
    mniAbout = new JMenuItem(“关于”);

    // 创建图标对象
    imgCollege = new ImageIcon(“images/college.png”);
    imgPassword = new ImageIcon(“images/password.png”);
    imgQuery = new ImageIcon(“images/query.png”);
    imgBrowse = new ImageIcon(“images/browse.png”);
    imgCount = new ImageIcon(“images/count.png”);
    imgExit = new ImageIcon(“images/exit.png”);

    // 创建工具栏
    toolbar = new JToolBar();
    btnSetCollege = new JButton(“设置学校”, imgCollege);
    btnSetCollege.setToolTipText(“设置学校信息”);
    btnSetCollege.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnSetCollege.setHorizontalTextPosition(AbstractButton.CENTER);
    btnChangePassword = new JButton(“修改密码”, imgPassword);
    btnChangePassword.setToolTipText(“修改用户密码”);
    btnChangePassword.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnChangePassword.setHorizontalTextPosition(AbstractButton.CENTER);
    btnBrowseStudent = new JButton(“浏览学生”, imgBrowse);
    btnBrowseStudent.setToolTipText(“浏览学生记录”);
    btnBrowseStudent.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnBrowseStudent.setHorizontalTextPosition(AbstractButton.CENTER);
    btnFindStudentById = new JButton(“查询学生”, imgQuery);
    btnFindStudentById.setToolTipText(“按学号查询学生记录”);
    btnFindStudentById.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnFindStudentById.setHorizontalTextPosition(AbstractButton.CENTER);
    btnCountByDepartment = new JButton(“统计人数”, imgCount);
    btnCountByDepartment.setToolTipText(“按系部统计学生人数”);
    btnCountByDepartment.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnCountByDepartment.setHorizontalTextPosition(AbstractButton.CENTER);
    btnExit = new JButton(“退出系统”, imgExit);
    btnExit.setToolTipText(“退出系统”);
    btnExit.setVerticalTextPosition(AbstractButton.BOTTOM);
    btnExit.setHorizontalTextPosition(AbstractButton.CENTER);
    toolbar.add(btnSetCollege);
    toolbar.add(btnChangePassword);
    toolbar.add(btnBrowseStudent);
    toolbar.add(btnFindStudentById);
    toolbar.add(btnCountByDepartment);
    toolbar.add(btnExit);

    // 创建面板
    panel = (JPanel) getContentPane();
    pnlCenter = new JPanel();
    pnlSouth = new JPanel();
    pnlSouth.setLayout(new FlowLayout(FlowLayout.LEFT));

    // 创建背景图片
    imgBackground = new ImageIcon(“images\backgroud.jpg”);
    // 创建背景标签
    lblBackground = new JLabel(imgBackground);
    // 创建状态栏标签
    lblStatusBar = new JLabel();

    // 设置菜单栏
    setJMenuBar(mnbMain);
    // 添加【设置】菜单
    mnbMain.add(mnuSet);
    mnuSet.add(mniSetCollegeInfo);
    mnuSet.add(mniSetStatusBar);
    mnuSet.add(mniChangePassword);
    mnuSet.addSeparator();
    mnuSet.add(mniExit);

    // 添加【删除学生表记录】菜单
    mnuDelStu.add(mniDelStudentById);
    mnuDelStu.add(mniDelStudentsByClass);
    mnuDelStu.add(mniDelStudentsByDepartment);

    // 添加【操作】菜单
    mnbMain.add(mnuOperate);
    mnuOperate.add(mniAddStudent);
    mnuOperate.add(mniEditStudent);
    mnuOperate.add(mnuDelStu);
    mnuOperate.add(mniBrowseStudent);

    // 添加【查询】菜单
    mnbMain.add(mnuFind);
    mnuFind.add(mniFindStudentById);
    mnuFind.add(mniFindStudentsByName);
    mnuFind.add(mniFindStudentsByClass);
    mnuFind.add(mniFindStudentsByDepartment);

    // 添加【统计】菜单
    mnbMain.add(mnuCount);
    mnuCount.add(mniCountStudentsBySex);
    mnuCount.add(mniCountStudentsByClass);
    mnuCount.add(mniCountStudentsByDepartment);

    // 添加【帮助】菜单
    mnbMain.add(mnuHelp);
    mnuHelp.add(mniHelp);
    mnuHelp.add(mniAbout);

    // 添加面板
    panel.setLayout(new BorderLayout());
    panel.add(toolbar, “North”);
    panel.add(pnlCenter, “Center”);
    panel.add(pnlSouth, “South”);
    pnlCenter.add(lblBackground);
    pnlSouth.add(lblStatusBar);

    // 非管理员不能设置状态栏
    if (!Application.username.equals(“admin”)) {
    mniSetStatusBar.setEnabled(false);
    mniAddStudent.setEnabled(false);
    mnuDelStu.setEnabled(false);
    mniEditStudent.setEnabled(false);
    }

    // 设置状态栏信息
    setStatusBar();

    // 创建状态服务对象
    statusService = new StatusServiceImpl();
    // 获取状态对象
    status = statusService.findSTatusById(1);

    // 设置窗口尺寸
    setSize(800, 640);

    this.setResizable(false);
    // 设置窗口可见
    setVisible(true);
    // 设置窗口屏幕居中
    setLocationRelativeTo(null);
    // 设置窗口标题
    setTitle(“学生信息管理系统” + status.getVersion());

    // 注册窗口监听器，继承窗口适配器，编写事件处理方法
    addWindowListener(new WindowAdapter() {
    @Override
    public void windowClosing(WindowEvent e) {
    exitSystem();
    }
    });

    // 设置菜单
    // 【设置学校信息】菜单项单击事件
    mniSetCollegeInfo.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new SetCollegeInfoFrame("");
    }
    });

    // 【设置状态栏信息】菜单项单击事件
    mniSetStatusBar.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new SetStatusBarFrame("");
    }
    });

    // 【修改密码】菜单项单击事件
    mniChangePassword.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new ChangePasswordFrame("");
    }
    });

    // 【退出系统】菜单项单击事件
    mniExit.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    exitSystem();
    }
    });

    // 查询菜单
    // 【按学号查询】菜单项单击事件
    mniFindStudentById.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new FindStudentByIdFrame("");
    }
    });

    // 【按姓名查询】菜单项单击事件
    mniFindStudentsByName.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new FindStudentsByNameFrame("");
    }
    });

    // 【按班级查询】菜单项单击事件
    mniFindStudentsByClass.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new FindStudentsByClassFrame("");
    }
    });

    // 【按系部查询】菜单项单击事件
    mniFindStudentsByDepartment.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new FindStudentsByDepartementFrame("");
    }
    });

    // 统计菜单
    // 【按性别统计人数】菜单项单击事件
    mniCountStudentsBySex.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new CountStudentsBySexFrame("");
    }
    });

    // 【按班级统计人数】菜单项单击事件
    mniCountStudentsByClass.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new CountStudentsByClassFrame("");
    }
    });

    // 【按系部统计人数】菜单项单击事件
    mniCountStudentsByDepartment.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new CountStudentsByDepartementFrame("");
    }
    });

    // 【增加学生记录】菜单项单击事件
    mniAddStudent.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    new AddStudentFrame("");
    }
    });

    // 【按学号删除学生记录】菜单项单击事件
    mniDelStudentById.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new DeleteStudentByIdFrame("");
    }
    });

    // 【按班级删除学生记录】菜单项单击事件
    mniDelStudentsByClass.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new DeleteStudentByClassFrame("");
    }
    });

    // 【按系部删除学生记录】菜单项单击事件
    mniDelStudentsByDepartment.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new DeleteStudentsByDepartmentFrame("");
    }
    });

    // 【编辑学生记录】菜单项单击事件
    mniEditStudent.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    new EditStudentFrame("");
    }
    });

    // 【浏览学生记录】菜单项单击事件
    mniBrowseStudent.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    new BrowseStudentsFrame("");
    }
    });

    // 【帮助】菜单单击事件
    mniHelp.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    try {
    Runtime.getRuntime().exec(“cmd /c start help/帮助文档.chm”);
    } catch (IOException e1) {
    JOptionPane.showMessageDialog(null, e1.getMessage(), “学生信息管理系统”, JOptionPane.ERROR_MESSAGE);
    }
    }
    });

    // 【关于】菜单单击事件
    mniAbout.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    JOptionPane.showMessageDialog(null,
    “开发人员：” + status.getCollege() + “_” + status.getAuthor() + “\n联系电话：” + status.getTelephone()
    + “\n电子邮箱：” + status.getEmail(),
    “学生信息管理系统” + status.getVersion(), JOptionPane.INFORMATION_MESSAGE);
    }
    });

    // 工具栏按钮单击事件
    // 【设置学校信息】按钮
    btnSetCollege.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new SetCollegeInfoFrame("");
    }
    });

    // 【修改密码】按钮
    btnChangePassword.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new ChangePasswordFrame("");
    }
    });

    // 【浏览】按钮
    btnBrowseStudent.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new BrowseStudentsFrame("");
    }
    });

    // 【查询】按钮
    btnFindStudentById.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new FindStudentByIdFrame("");
    }
    });

    // 【统计】按钮
    btnCountByDepartment.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    new CountStudentsByDepartementFrame("");
    }
    });

    // 【退出】按钮
    btnExit.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    exitSystem();
    }
    });
    }

  /**

  • 退出系统（询问用户是否要退出）
    */
    private void exitSystem() {
    int choice = JOptionPane.showConfirmDialog(this,
    “您是否要退出系统？”,“学生信息管理系统”, JOptionPane.YES_NO_OPTION);
    if (choice == JOptionPane.YES_OPTION) {
    System.exit(0);
    } else {
    // 卸载当前窗口
    dispose();
    // 重新显示主窗口
    Application.mainFrame = new MainFrame(“学生信息管理系统” + status.getVersion());
    }
    }

  /**

  • 设置状态栏信息
    */
    public void setStatusBar() {
    // 创建状态服务对象
    statusService = new StatusServiceImpl();
    // 获取状态栏对象
    status = statusService.findSTatusById(1);
    // 设置状态栏标签
    lblStatusBar.setText(
    status.getCollege() + “学生信息管理系统” + status.getVersion() + " 作者：" + status.getAuthor() + " 地址："
    + status.getAddress() + " 电话：" + status.getTelephone() + " 邮箱：" + status.getEmail());
    }

  /**

  • 主方法
  • @param args
    */
    public static void main(String[] args) {
    Application.mainFrame = new MainFrame("");
    }

}

（3）RegisterFrame

package qingjiabo.student.gui;
/**

• 功能：注册窗口
• 作者：卿加波
• 时间：2019/017/01
  */

import qingjiabo.student.app.Application;
import qingjiabo.student.bean.User;
import qingjiabo.student.service.UserService;
import qingjiabo.student.service.impl.UserServiceImpl;

import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.sql.Timestamp;
import java.util.Date;

public class RegisterFrame extends JFrame{

/**
 * 标签
 */
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblTelephone;
/**
 * 文本框
 */
private JTextField txtUsername;
private JTextField txtTelephone;
private JPasswordField txtPassword;
/**
 * 按钮
 */
private JButton btnSubmit;
private JButton btnCancel;
private JButton btnLogin;
/**
 * 面板
 */
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;

private String username;
private String password;
private String telephone;
private Date registerTime;

/**
 * 构造方法
 *
 * @param title
 */
public RegisterFrame(String title) {
    super(title);
    initGUI();
}

/**
 * 初始化图形用户界面
 */
private void initGUI() {
    // 创建组件（面板与控件）
    panel = (JPanel) getContentPane();
    panel1 = new JPanel();
    panel2 = new JPanel();
    panel3 = new JPanel();
    panel4 = new JPanel();

    lblUsername = new JLabel("用户名：");
    lblPassword = new JLabel("密    码：");
    lblTelephone = new JLabel("电   话：");
    txtUsername = new JTextField("", 15);
    txtPassword = new JPasswordField("", 15);
    txtTelephone = new JTextField("", 15);
    btnSubmit = new JButton("提交[S]");
    btnCancel = new JButton("取消[C]");
    btnLogin = new JButton("登录[L]");

    // 将控件添加到四个小面板
    panel1.add(lblUsername);
    panel1.add(txtUsername);
    panel2.add(lblPassword);
    panel2.add(txtPassword);
    panel3.add(lblTelephone);
    panel3.add(txtTelephone);
    panel4.add(btnSubmit);
    panel4.add(btnCancel);
    panel4.add(btnLogin);

    // 设置大面板布局，将四个小面板添加到大面板
    panel.setLayout(new GridLayout(4, 1));
    panel.add(panel1);
    panel.add(panel2);
    panel.add(panel3);
    panel.add(panel4);

    // 设置窗口大小
    setSize(250, 200);
    // 设置窗口屏幕居中
    setLocationRelativeTo(null);
    // 设置窗口不可调整大小
    setResizable(false);
    // 设置窗口刚好容纳组件
    pack();
    // 设置窗口标题
    setTitle("用户注册");
    // 设置窗口可见
    setVisible(true);
    // 设置窗口默认关闭操作（卸载当前窗口）
    setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

    // 注册窗口监听器
    addWindowListener(new WindowAdapter() {
        @Override
        public void windowClosing(WindowEvent e) {
            // 卸载当前窗口——注册窗口
            dispose();
            // 让登录窗口可见
            Application.loginFrame.setVisible(true);
        }
    });

    // 【提交】按钮单击事件处理
    btnSubmit.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            register();
        }
    });

    // 【提交】按钮按键事件处理
    btnSubmit.addKeyListener(new KeyAdapter() {
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                register();
            }
        }
    });

    // 【取消】按钮单击事件处理
    btnCancel.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            // 显示登录窗口
            Application.loginFrame.setVisible(true);
            // 卸载当前窗口
            dispose();
        }
    });

    // 【登录】按钮单击事件处理
    btnLogin.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent arg0) {
            // 显示登录窗口
            Application.loginFrame.setVisible(true);
            // 卸载当前窗口
            dispose();
        }
    });

    // 【用户名】文本框按键事件处理
    txtUsername.addKeyListener(new KeyAdapter() {
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                txtPassword.requestFocus();
            }
        }
    });

    // 【密码】文本框按键事件处理
    txtPassword.addKeyListener(new KeyAdapter() {
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == 10) {
                txtTelephone.requestFocus();
            }
        }
    });

    // 【电话】文本框按键事件处理
    txtTelephone.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                btnSubmit.requestFocus();
            }
        }
    });
}

/**
 * 注册方法
 */
private void register() {
    // 获取用户名
    username = txtUsername.getText().trim();
    // 获取密码
    password = new String(txtPassword.getPassword());
    // 获取电话
    telephone = txtTelephone.getText().trim();
    // 定义当前时间为注册时间
    registerTime = new Timestamp(System.currentTimeMillis());

    // 对用户名进行非空校验
    if (username.equals("")) {
        JOptionPane.showMessageDialog(null, "用户名不能为空！", "学生信息管理系统", JOptionPane.WARNING_MESSAGE);
        txtUsername.requestFocus();
        return;
    }

    // 对密码进行非空校验
    if (txtPassword.equals("")) {
        JOptionPane.showMessageDialog(null, "密码不能为空！", "学生信息管理系统", JOptionPane.WARNING_MESSAGE);
        txtPassword.requestFocus();
        return;
    }

    // 定义用户服务对象
    UserService userService = new UserServiceImpl();
    // 创建用户
    User user = new User();
    user.setUsername(username);
    user.setPassword(password);
    user.setTelephone(telephone);
    user.setRegisterTime(registerTime);

    // 添加用户
    int count = userService.addUser(user);

    // 判断是否添加成功
    if (count > 0) {
        setVisible(false);
        JOptionPane.showMessageDialog(null, "恭喜！注册成功！", "学生信息管理系统", JOptionPane.INFORMATION_MESSAGE);
        setVisible(true);
    } else {
        JOptionPane.showMessageDialog(null, "遗憾！注册失败！", "学生信息管理系统", JOptionPane.INFORMATION_MESSAGE);
    }
}

/**
 * 主方法
 *
 * @param args
 */
public static void main(String[] args) {
    Application.registerFrame = new RegisterFrame("");
}

}