实训6.24:GUI学生信息管理系统
应用程序类：
package net.lcn.student.bean.app;
import net.lcn.student.bean.gui.LoginFrame;
import net.lcn.student.bean.gui.MainFrame;
import net.lcn.student.bean.gui.RegisterFrame;
/**
* 功能：应用程序类
存放全局数据
*2019.6.20
*/
public class Application {
/**
* 登录用户标识符
*/
public static String id;
/**
* 登录用户用户名
*/
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）：
创建net.lcn.student.gui包，在里面先创建三个界面类：LoginFrame、MainFrame与RegisterFrame。
（1）主界面窗口MainFrame:
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import net.lcn.student.bean.bean.Status;
import net.lcn.student.bean.service.StatusService;
import net.lcn.student.bean.service.impl.StatusServiceImpl;
import javax.swing.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
* 功能：主界面窗口
通过菜单系统
调用各个功能模块
*/
public class MainFrame extends JFrame {
private Status status;
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() {
//创建状态服务对象
statusService = new StatusServiceImpl();
//获取对象
status = statusService.findStatusById(1);
//设置窗口尺寸
setSize(800,640);
//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());
//注册窗口试听器，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();
}
});
}
/**
* 退出系统（询问用户是否退出）
*/
private void exitSystem() {
int choice = JOptionPane.showConfirmDialog(this,
"你是否要退出系统？","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();
//创新显示主窗口
Application.mainFrame = new MainFrame("学生信息管理系统 " + status.getVersion());
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
Application.mainFrame = new MainFrame("");
}
}
运行结果：
（2）用户注册窗口RegisterFrame（V1.0）——代码后面会有修改：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import javax.swing.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
- 更能：注册窗口
- 2019.6.24
*/
public class RegisterFrame extends JFrame {
/**
* 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() {
//设置窗口大小
setSize(250,200);
//设置屏幕居中
setLocationRelativeTo(null);
//设置窗口不可调大小
setResizable(false);
//设置窗口标题
setTitle(“用户注册”);
//设置窗口可见
setVisible(true);
//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
disable();
//让登录窗口可见
Application.loginFrame.setVisible(true);
}
});
}
public static void main(String[] args) {
Application.registerFrame = new RegisterFrame("");
}
}
修改部分：修改后则不会报错
运行效果：
（3）用户登录窗口LoginFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
/**
* 功能：登录窗口
*/
public class LoginFrame extends JFrame {
private String usernmae;
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（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络布局
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_0);
btnCancel.setMnemonic(KeyEvent.VK_C);
btnRegister.setMnemonic(KeyEvent.VK_R);
//设置密码框回显示字符
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);
//设置窗口可见
setVisible(true);
//设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
Application.loginFrame = new LoginFrame("用户登录");
}
}
运行效果：
由于行间距太大，界面显得不紧凑，则可以使用以下：
效果如下：
单击【确定】按钮，或当焦点落在【确定】按钮时按回车键，都会调用登录方法login()。
编写登录方法login()：
/**
* 登录方法
*
*/
private void login() {
//获取用户名
usernmae = 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(usernmae, 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);
//提示用户登陆失败，要重新是入户门或密码
JOptionPane.showMessageDialog(null,
"用户名或密码登陆失败，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();
//密码文本框获取焦点
txtPassword.requestFocus();
}
}
运行效果：
输入用户名之后，敲回车让光标跳到密码文本框应该编写一个用户名文本框的按键事件：
编写【密码】文本框按键事件处理代码（敲回车后执行登录方法）：
编写【注册】按钮单击事件处理代码：
测试，单击【注册】按钮能否跳转到注册窗口：
（4）用户注册窗口RegisterFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import net.lcn.student.bean.bean.Status;
import net.lcn.student.bean.bean.User;
import net.lcn.student.bean.service.StatusService;
import net.lcn.student.bean.service.UserService;
import net.lcn.student.bean.service.impl.StatusServiceImpl;
import net.lcn.student.bean.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;
/**
* 功能：登录窗口
*/
public class LoginFrame extends JFrame {
private String usernmae;
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（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络布局
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_0);
btnCancel.setMnemonic(KeyEvent.VK_C);
btnRegister.setMnemonic(KeyEvent.VK_R);
//设置密码框回显示字符
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);
//设置窗口刚好容纳组件
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 keyReleased(KeyEvent e) {
//按下回车键，调用登录方法
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
login();
}
}
});
//[用户名]文本款罕见事件处理
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) {
//让文本框获取焦点
txtPassword.requestFocus();
}
}
});
//[密码]文本框按键事件处理
txtPassword.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
//判断是否按下了回车键
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
login();
}
}
});
//[取消]按键单机事件处理
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
//[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");
}
});
}
/**
* 登录方法
*
*/
private void login() {
//获取用户名
usernmae = 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(usernmae, 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);
//提示用户登陆失败，要重新是入户门或密码
JOptionPane.showMessageDialog(null,
"用户名或密码登陆失败，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();
//密码文本框获取焦点
txtPassword.requestFocus();
}
}
/**
* 主方法
*
* @param args
*/
public static void main (String[]args){
Application.loginFrame = new LoginFrame("用户登录");
}
}
运行效果：先启动登录窗口，单击【注册】按钮，跳转到注册窗口，注册一个新用户，然后以新用户登录系统。
（5）设置学校信息窗口SetCollegeInfoFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.College;
import net.lcn.student.bean.service.CollegeService;
import net.lcn.student.bean.service.impl.CollegeServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class SetCollegeInFrame extends JFrame {
/**
* 面板
*/
JPanel panel;
JPanel pnlNorth;
JPanel panel1;
JPanel panel2;
JPanel panel3;
JPanel panel4;
JPanel panel5;
JPanel pnlCenter;
JPanel pnlSouth;
/**
* 标签
*/
JLabel lblName;
JLabel lblPresident;
JLabel lblStartTime;
JLabel lblTelephone;
JLabel lblEmail;
JLabel lblAddress;
JLabel lblProfile;
/**
* 按钮
*/
JButton btnSave;
JButton btnExit;
/**
* 文本框与文本区
*/
JTextField txtName;
JTextField txtPresident;
JTextField txtStartTime;
JTextField txtTelephone;
JTextField txtEMail;
JTextField txtAddress;
JTextArea txtProfile;
/**
* 滚动面板
*/
JScrollPane scrollPane;
/**
* 学校服务
*/
private CollegeService collegeService;
private College college;
private int id = 1;
/**
* 构造方向
*
* @param title
*/
public SetCollegeInFrame(String title) {
super(title);
initGUI();
}
private void initGUI() {
//创建组件（面板与控件）
panel = (JPanel)getContentPane();
pnlNorth = new JPanel();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel5 = new JPanel();
pnlSouth = new JPanel();
pnlCenter = new JPanel();
lblName = new JLabel("学校名称：");
lblPresident = new JLabel("校 长：");
lblStartTime = new JLabel("建校时间：");
lblTelephone = new JLabel("联系电话：");
lblEmail = new JLabel("电子邮箱：");
lblAddress = new JLabel("通讯地址：");
lblProfile = new JLabel("学校简介：");
txtName = new JTextField(30);
txtPresident = new JTextField(11);
txtStartTime = new JTextField(12);
txtTelephone = new JTextField(11);
txtEMail = new JTextField(12);
txtAddress = new JTextField(30);
txtProfile = new JTextArea(5,37);
txtProfile.setLineWrap(true);//让文本自动换行
scrollPane = new JScrollPane(txtProfile,ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
btnSave = new JButton("保存[S]");
btnSave.setMnemonic(KeyEvent.VK_S);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
//设置大面板布局，将白面板、中面板与南面板添加到大面板
panel.setLayout(new BorderLayout());
panel.add(pnlNorth,"North");
panel.add(pnlCenter,"Center");
panel.add(pnlSouth,"South");
//设置北面板布局，添加五个小面板
pnlNorth.setLayout(new GridLayout(5,1));
pnlNorth.add(panel1);
pnlNorth.add(panel2);
pnlNorth.add(panel3);
pnlNorth.add(panel4);
pnlNorth.add(panel5);
//将控件依次添加到五个小面板
panel1.add(lblName);
panel1.add(txtName);
panel2.add(lblPresident);
panel2.add(txtPresident);
panel2.add(lblStartTime);
panel2.add(txtStartTime);
panel3.add(lblTelephone);
panel3.add(txtTelephone);
panel3.add(lblEmail);
panel3.add(txtEMail);
panel4.add(lblAddress);
panel4.add(txtAddress);
panel5.add(lblProfile);
//将滚动面板添加到中面板
pnlCenter.add(scrollPane);
//将两个按钮添加到南面板
pnlSouth.add(btnSave);
pnlSouth.add(btnExit);
//创建学校服务对象
collegeService = new CollegeServiceImpl();
//获取学校对象
college = collegeService.findCollegeById(id);
//利用学校对象实属性值设置相应控件的内容
txtName.setText(college.getName());
txtPresident.setText(college.getPresident());
txtStartTime.setText(college.getStartTime().toString());
txtTelephone.setText(college.getTelephone());
txtEMail.setText(college.getEmail());
txtAddress.setText(college.getAddress());
txtProfile.setText(college.getProfile());
//设置窗口大小
setSize(450,350);
//设置窗口居中
setLocationRelativeTo(null);
//设置窗口不可调大小
setResizable(false);
//设置窗口刚好容纳组件
pack();
//设置窗口标题
setTitle("设置学校信息");
//设置窗口可见
setVisible(true);
//设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//[关闭]按钮单击事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//关闭窗口
dispose();
}
});
//[保存]按钮单击事件处理
btnSave.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
//修改学校对象属性
college.setName(txtName.getText());
college.setPresident(txtPresident.getText());
college.setStartTime(new Timestamp(
new SimpleDateFormat("yyyy-MM-dd")
.parse(txtStartTime.getText().toString()).getTime()));
college.setTelephone(txtTelephone.getText());
college.setEmail(txtEMail.getText());
college.setAddress(txtAddress.getText());
college.setProfile(txtProfile.getText());
//更新学校信息
collegeService.updateCollege(college);
//提示用户更新成功
JOptionPane.showMessageDialog(null,"更新数据成功");
} catch (ParseException e1) {
//提示用户更新失败
JOptionPane.showMessageDialog(null,"更新数据失败");
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new SetCollegeInFrame("");
}
}
运行程序，效果如下：
（6）修改用户密码窗口ChangePasswordFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import net.lcn.student.bean.bean.User;
import net.lcn.student.bean.service.UserService;
import net.lcn.student.bean.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;
/**
* 功能：修改用户密码
*/
public class ChangePasswordFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
/**
* 标签
*/
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblNewPassword1;
private JLabel lblNewPassword2;
/**
* 文本框
*/
private JTextField txtUsername;
private JPasswordField txtPassword;
private JPasswordField txtNewPassword1;
private JPasswordField txtNewPassword2;
/**
* 按钮
*/
private JButton btnOK;
private JButton btnCancel;
/**
* 用户服务对象
*/
private UserService userService;
/**
* 构造方法
*
* @param title
*/
public ChangePasswordFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
//创建组件（面板与控件）
panel = (JPanel) getContentPane();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
lblUsername = new JLabel("用户名：");
lblPassword = new JLabel("旧密码：");
lblNewPassword1 = new JLabel("新密码:");
lblNewPassword2 = new JLabel("确 认：");
txtUsername = new JTextField(20);
txtUsername.setEnabled(false);
txtPassword = new JPasswordField(20);
txtNewPassword1 = new JPasswordField(20);
txtNewPassword2 = new JPasswordField(20);
btnOK = new JButton("确认[O]");
btnOK.setMnemonic(KeyEvent.VK_0);
btnCancel = new JButton("取消[C]");
btnCancel.setMnemonic(KeyEvent.VK_C);
//设置大面板布局，添加五个小面板
panel.setLayout(new GridLayout(5,1));
panel.add(pnlRow1);
panel.add(pnlRow2);
panel.add(pnlRow3);
panel.add(pnlRow4);
panel.add(pnlRow5);
//将控件添加到五个小面板
pnlRow1.add(lblUsername);
pnlRow1.add(txtUsername);
pnlRow2.add(lblPassword);
pnlRow2.add(txtPassword);
pnlRow3.add(lblNewPassword1);
pnlRow3.add(txtNewPassword1);
pnlRow4.add(lblNewPassword2);
pnlRow4.add(txtNewPassword2);
pnlRow5.add(btnOK);
pnlRow5.add(btnCancel);
//设置窗口不可调整大小
setResizable(false);
//设置窗口刚好容纳组件
pack();
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口标题
setTitle("修改用户密码");
//设置窗口可见
setVisible(true);
//设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//设置控件属性
txtUsername.setEnabled(false);
txtUsername.setText(Application.username);
//[取消]按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
//[确定]按钮单击事件处理
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
changePassword();
}
});
//[确定]按钮按键事件处理
btnOK.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
changePassword();
}
}
});
//【用户名】文本框按键事件处理
txtUsername.addKeyListener(new KeyAdapter() {
@Override
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() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER){
txtNewPassword1.requestFocus();
}
}
});
//[新密码1]文本框按键事件处理
txtNewPassword1.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER) {
txtNewPassword2.requestFocus();
}
}
});
//【新密码2】文本框按键事件处理
txtNewPassword2.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER){
btnOK.requestFocus();
}
}
});
}
/**
* 修改密码方法
*/
private void changePassword() {
//获取用户密码
int id = Application.id;
String username = Application.username;
//保存用户输入旧密码与两个新密码
String password = new String(txtPassword.getPassword());
String newPassword1 = new String(txtNewPassword1.getPassword());
String newPassword2 = new String(txtNewPassword2.getPassword());
//创建学生服务对象
userService = new UserServiceImpl();
if( userService.login(username, password) == null) {
JOptionPane.showMessageDialog(null,"旧密码错误，请重新输入","错误提示",JOptionPane.ERROR_MESSAGE);
txtPassword.requestFocus();
txtPassword.selectAll();
}else if (newPassword1.equals("")) {
JOptionPane.showMessageDialog(null,"新密码不能为空！","错误提示",JOptionPane.ERROR_MESSAGE);
txtNewPassword1.requestFocus();
}else if(newPassword2.equals("")) {
JOptionPane.showMessageDialog(null,"确认密码不能为空！","错误提示",JOptionPane.ERROR_MESSAGE);
txtNewPassword2.requestFocus();
}else if (!newPassword1.equals(newPassword2)) {
JOptionPane.showMessageDialog(null,"两次密码不一致,请从新输入！", "错误提示",JOptionPane.ERROR_MESSAGE);
txtNewPassword1.setText("");
txtNewPassword2.setText("");
txtNewPassword1.requestFocus();
}else {
//按标识符获取用户
User user = userService.findUserById(id);
//修改用户的密码属性
user.setPassword(newPassword1);
//调用用户服务对象的更新方法，更新用户信息
int count = userService.updateUser(user);
if (count > 0) {
JOptionPane.showMessageDialog(null,"密码修改成功","设置密码",JOptionPane.INFORMATION_MESSAGE);
dispose();
}else {
JOptionPane.showMessageDialog(null,"密码修改失败","错误提示",JOptionPane.WARNING_MESSAGE);
}
}
}
public static void main(String[] args) {
Application.id = 2;
Application.username = "王五";
new ChangePasswordFrame("");
}
}
测试，修改id为2的用户王五的密码，结果如下：
（7）浏览学生窗口BrowseStudentsFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.io.FileReader;
import java.util.List;
/**
* 功能：浏览学生记录
*/
public class BrowseStudentsFrame extends JFrame {
/**
* 声明面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
/**
* 声明标签
*/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/**
* 声明文本框
*/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/**
* 声明按钮
*/
private JButton btnTop;
private JButton btnPrevious;
private JButton btnNext;
private JButton btnBottom;
private JButton btnExit;
/**
* 当前记录行数
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public BrowseStudentsFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
//创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号:");
lblName = new JLabel("姓名:");
lblSex = new JLabel("性别:");
lblAge = new JLabel("年龄:");
lblDepartment = new JLabel(" 系部:");
lblClass = new JLabel("班级:");
lblTelephone = new JLabel("电话:");
txtId = new JTextField(40);
txtName = new JTextField(40);
txtSex = new JTextField(40);
txtAge = new JTextField(40);
txtDepartment = new JTextField(40);
txtClass = new JTextField(40);
txtTelephone = new JTextField(40);
txtId.setEditable(false);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
btnTop = new JButton("第一条[T]");
btnPrevious = new JButton("上一条[P]");
btnNext = new JButton("下一条[N]");
btnBottom = new JButton("最后一条[B]");
btnExit = new JButton("退出[X]");
btnTop.setMnemonic(KeyEvent.VK_T);
btnPrevious.setMnemonic(KeyEvent.VK_P);
btnNext.setMnemonic(KeyEvent.VK_N);
btnBottom.setMnemonic(KeyEvent.VK_B);
btnExit.setMnemonic(KeyEvent.VK_X);
//添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7,1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(btnTop);
pnlSouth.add(btnPrevious);
pnlSouth.add(btnNext);
pnlSouth.add(btnBottom);
pnlSouth.add(btnExit);
//设置窗口属性
setSize(500,300);
//设置窗口刚好容纳组件
pack();
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口可见
setVisible(true);
//设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//创建学生服务对象
studentService = new StudentServiceImpl();
//获取全部学生列表
students = studentService.findAllStudents();
//判断是否有学生记录
if (students.size() > 0) {
//设置当前记录号
currentRow = 1;
//设置窗口标题
setTitle("浏览学生表记录" + "&&当前记录: " + currentRow);
//填充窗口各文本框数据
fillFrameDate(currentRow);
}else {
JOptionPane.showMessageDialog(null,"表中没有记录！","浏览学生表记录", JOptionPane.ERROR_MESSAGE);
btnTop.setEnabled(false);
btnPrevious.setEnabled(false);
btnNext.setEnabled(false);
btnBottom.setEnabled(false);
}
//[第一条]按钮单击事件
btnTop.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//设置当前记录号
currentRow = 1;
//填充当前记录数据
fillFrameDate(currentRow);
}
});
//[上一条]按钮单击事件
btnPrevious.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow > 1) {
//设置当前记录号
currentRow--;
//填充当前记录数
fillFrameDate(currentRow);
}else {
JOptionPane.showMessageDialog(null,"已到第一条记录","浏览学生表记录",JOptionPane.ERROR_MESSAGE);
}
}
});
//[下一条]按钮单击事件
btnNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow < students.size() - 1) {
//设置当前记录号
currentRow++;
//填充当前记录数据
fillFrameDate(currentRow);
}else {
JOptionPane.showMessageDialog(null,"已到最后一条记录！" ,"浏览学生表记录",JOptionPane.ERROR_MESSAGE);
}
}
});
//[最后一条]按钮单击事件
btnBottom.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = students.size() - 1;
//填充当前记录书据
fillFrameDate(currentRow);
}
});
//[退出]按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
}
/**
* 将当前记录数据填充窗口各文本框
*
* @param currentRow
*/
private void fillFrameDate(int currentRow) {
if (currentRow > 0) {
setTitle("浏览学生表记录" + "&& 当前记录：" + currentRow);
txtId.setText(students.get(currentRow).getId());
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
}
public static void main(String[] args) {
new BrowseStudentsFrame("");
}
}
运行程序，效果如下：
（8）添加学生窗口AddStudentFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
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;
import java.util.List;
/**
* 功能：添加学生记录
*/
public class AddStudentFrame extends JFrame {
/**
* 声明面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
/**
* 声明标签
*/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/**
* 声明文本框
*/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/**
* 声明按钮
*/
private JButton btnExit;
private JButton btnOK;
private JButton btnCancel;
/**
* 当前记录行数
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 构造方法
*
* @param title
*/
public AddStudentFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
//创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号：");
lblName = new JLabel("姓名：");
lblSex = new JLabel("性别：");
lblAge = new JLabel("年龄：");
lblDepartment = new JLabel("系部：");
lblClass = new JLabel("班级：");
lblTelephone = new JLabel("电话：");
txtId = new JTextField(20);
txtName = new JTextField(20);
txtSex = new JTextField(20);
txtAge = new JTextField(20);
txtDepartment = new JTextField(20);
txtClass = new JTextField(20);
txtTelephone = new JTextField(20);
btnOK = new JButton("确定[O]");
btnCancel = new JButton("取消[C]");
btnExit = new JButton("退出[X]");
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel.setMnemonic(KeyEvent.VK_C);
btnExit.setMnemonic(KeyEvent.VK_X);
//添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7,1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(btnOK);
pnlSouth.add(btnCancel);
pnlSouth.add(btnExit);
// 设置窗口属性
setSize(500, 300);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口刚好容纳组件
pack();
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("添加学生记录");
// 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
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//学号非空校验
if (txtId.getText().trim().equals("")) {
JOptionPane.showMessageDialog(null,"学号不能为空","增加学生记录",JOptionPane.WARNING_MESSAGE);
txtAge.setText("");
txtAge.requestFocus();
return;
}
//创建学生实体
Student student = new Student();
//设置学生实体属性
student.setId(txtId.getText().trim());
student.setName(txtName.getText().trim());
student.setSex(txtSex.getText().trim());
student.setAge(Integer.parseInt(txtAge.getText()));
student.setDepartment(txtDepartment.getText().trim());
student.setClazz(txtClass.getText().trim());
student.setTelephone(txtTelephone.getText().trim());
//创建学生服务对象
StudentService studentService = new StudentServiceImpl();
//添加学生记录
int count = studentService.addStudent(student);
//判断是否添加成功
if (count > 0) {
JOptionPane.showMessageDialog(null,"添加纪录成功","增加学生记录",JOptionPane.INFORMATION_MESSAGE);
txtId.setText("");
txtName.setText("");
txtSex.setText("");
txtAge.setText("");
txtDepartment.setText("");
txtClass.setText("");
txtTelephone.setText("");
txtId.requestFocus();
}else {
JOptionPane.showMessageDialog(null, "添加记录失败！", "增加学生记录", JOptionPane.ERROR_MESSAGE);
}
}
});
// 【取消】按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
txtId.setText("");
txtName.setText("");
txtSex.setText("");
txtAge.setText("");
txtDepartment.setText("");
txtClass.setText("");
txtTelephone.setText("");
txtId.requestFocus();
}
});
// 【退出】按钮单击事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
// 【学号】文本框按键事件处理
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
if (!txtId.getText().trim().equals("")) {
txtName.requestFocus();
}
}
}
});
// 【姓名】文本框按键事件处理
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtSex.requestFocus();
}
}
});
// 【性别】文本框按键事件处理
txtSex.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtAge.requestFocus();
}
}
});
// 【年龄】文本框按键事件处理
txtAge.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtDepartment.requestFocus();
}
}
});
// 【系部】文本框按键事件处理
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtClass.requestFocus();
}
}
});
// 【班级】文本框按键事件处理
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtTelephone.requestFocus();
}
}
});
}
/**
* 判断一个字符串是否全是数字
*
* @param str
* @return
*/
boolean isNumber(String str) {
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) < '0' || str.charAt(i) > '9') {
return false;
}
}
return true;
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new AddStudentFrame("");
}
}
运行程序，效果如下：
（9）编辑学生窗口EditStudentFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
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;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 功能：编辑学生记录
*/
public class EditStudentFrame extends JFrame {
/**
* 声明面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
private JPanel pnlSouth1;
private JPanel pnlSouth2;
/**
* 声明标签
*/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/**
* 声明文本框
*/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/**
* 声明按钮
*/
private JButton btnTop;
private JButton btnPrevious;
private JButton btnNext;
private JButton btnBottom;
private JButton btnExit;
private JButton btnEdit;
private JButton btnOK;
private JButton btnCancel;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public EditStudentFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlSouth.setLayout(new GridLayout(2, 1));
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlSouth1 = new JPanel();
pnlSouth2 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号：");
lblName = new JLabel("姓名：");
lblSex = new JLabel("性别：");
lblAge = new JLabel("年龄：");
lblDepartment = new JLabel("系部：");
lblClass = new JLabel("班级：");
lblTelephone = new JLabel("电话：");
txtId = new JTextField(40);
txtName = new JTextField(40);
txtSex = new JTextField(40);
txtAge = new JTextField(40);
txtDepartment = new JTextField(40);
txtClass = new JTextField(40);
txtTelephone = new JTextField(40);
txtId.setEditable(false);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
btnTop = new JButton("第一条[T]");
btnPrevious = new JButton("上一条[P]");
btnNext = new JButton("下一条[N]");
btnBottom = new JButton("最后一条[B]");
btnExit = new JButton("退出[X]");
btnEdit = new JButton("编辑[E]");
btnOK = new JButton("确定[O]");
btnCancel = new JButton("取消[C]");
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnTop.setMnemonic(KeyEvent.VK_T);
btnPrevious.setMnemonic(KeyEvent.VK_P);
btnNext.setMnemonic(KeyEvent.VK_N);
btnBottom.setMnemonic(KeyEvent.VK_B);
btnExit.setMnemonic(KeyEvent.VK_X);
btnEdit.setMnemonic(KeyEvent.VK_E);
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel.setMnemonic(KeyEvent.VK_C);
// 添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7, 1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(pnlSouth1);
pnlSouth.add(pnlSouth2);
pnlSouth1.add(btnTop);
pnlSouth1.add(btnPrevious);
pnlSouth1.add(btnNext);
pnlSouth1.add(btnBottom);
pnlSouth1.add(btnExit);
pnlSouth2.add(btnEdit);
pnlSouth2.add(btnOK);
pnlSouth2.add(btnCancel);
// 设置窗口属性
setSize(500, 300);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口刚好容纳组件
pack();
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 判断是否有学生记录
if (students.size() > 0) {
// 设置当前记录号
currentRow = 1;
// 设置窗口标题
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
// 填充窗口各文本框数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "表中没有记录！", "浏览学生表记录", JOptionPane.ERROR_MESSAGE);
btnTop.setEnabled(false);
btnPrevious.setEnabled(false);
btnNext.setEnabled(false);
btnBottom.setEnabled(false);
}
// 【第一条】按钮单击事件
btnTop.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【上一条】按钮单击事件
btnPrevious.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow > 1) {
// 设置当前记录号
currentRow--;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到第一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【下一条】按钮单击事件
btnNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow < students.size() - 1) {
// 设置当前记录号
currentRow++;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到最后一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【最后一条】按钮单击事件
btnBottom.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = students.size() - 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
// 【编辑】按钮单击事件
btnEdit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置窗口标题
setTitle("编辑学生表记录" + " && 当前记录：" + currentRow);
txtName.setEditable(true);
txtSex.setEditable(true);
txtAge.setEditable(true);
txtDepartment.setEditable(true);
txtClass.setEditable(true);
txtTelephone.setEditable(true);
btnOK.setEnabled(true);
btnCancel.setEnabled(true);
}
});
// 【确定】按钮单击事件
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 获取当前学生实体
Student student = students.get(currentRow);
if (isNumber(txtAge.getText())) {
if (isLegalTelephone(txtTelephone.getText())) {
// 修改学生实体属性
student.setName(txtName.getText());
student.setSex(txtSex.getText());
student.setAge(Integer.parseInt(txtAge.getText()));
student.setDepartment(txtDepartment.getText());
student.setClazz(txtClass.getText());
student.setTelephone(txtTelephone.getText());
// 更新学生信息
int count = studentService.updateStudent(student);
// 判断是否更新成功
if (count > 0) {
JOptionPane.showMessageDialog(null, "更新记录成功！", "编辑学生记录", JOptionPane.INFORMATION_MESSAGE);
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnEdit.setEnabled(true);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 设置窗口标题
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
} else {
JOptionPane.showMessageDialog(null, "更新记录失败！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(null, "非法手机号！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
txtTelephone.selectAll();
txtTelephone.requestFocus();
}
} else {
JOptionPane.showMessageDialog(null, "年龄必须是数字！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
txtAge.selectAll();
txtAge.requestFocus();
}
}
});
// 【取消】按钮单击事件
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnEdit.setEnabled(true);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
// 恢复文本框修改前的值
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
});
// 【学号】文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtName.requestFocus();
}
}
});
// 【姓名】文本框按键事件
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtSex.requestFocus();
}
}
});
// 【性别】文本框按键事件
txtSex.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtAge.requestFocus();
}
}
});
// 【年龄】文本框按键事件
txtAge.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtDepartment.requestFocus();
}
}
});
// 【系部】文本框按键事件
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtClass.requestFocus();
}
}
});
// 【班级】文本框按键事件
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtTelephone.requestFocus();
}
}
});
}
/**
* 将当前记录数据填充窗口各文本框
*
* @param currentRow
*/
private void fillFrameData(int currentRow) {
if (currentRow > 0) {
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
txtId.setText(students.get(currentRow).getId());
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
}
// 判断一个字符串是否全是数字
private boolean isNumber(String str) {
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) < '0' || str.charAt(i) > '9') {
return false;
}
}
return true;
}
/**
* 判断是否合法手机号
*
* @param telephone
* @return
*/
private boolean isLegalTelephone(String telephone) {
Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0-9]))\\d{8}$");
Matcher m = p.matcher(telephone);
return m.matches();
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new EditStudentFrame("");
}
}
运行程序，效果如下：
（10）按学号删除学生窗口DeleteStudentByIdFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
/**
* 功能：按学号删除学生记录
*/
public class DeleteStudentByIdFrame extends JFrame {
/**
* 学号标签
*/
private JLabel lblInputId;
/**
* 学号文本框
*/
private JTextField txtId;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentByIdFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputId = new JLabel("输入学号：");
txtId = new JTextField(10);
txtId.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputId);
pnlNorth.add(txtId);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按学号删除学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删学生学号
String id = txtId.getText().trim();
// 按学号删除学生
int count = studentService.deleteStudentById(id);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删学生学号文本框
txtId.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 【学号】文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtId.setText(table.getValueAt(row, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String id = txtId.getText().trim();
if (!id.equals("")) {
students.clear();
Student student = studentService.findStudentById(id);
if (student != null) {
// 将查询到的学生添加到列表
students.add(student);
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
txtId.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtId.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new DeleteStudentByIdFrame("");
}
}
运行程序，效果如下：
（11）按班级删除学生窗口DeleteStudentsByClass：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
/**
* 功能：按班级删除学生记录
*/
public class DeleteStudentsByClassFrame extends JFrame {
/**
* 班级标签
*/
private JLabel lblInputClass;
/**
* 班级文本框
*/
private JTextField txtClass;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentsByClassFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputClass = new JLabel("输入班级：");
txtClass = new JTextField(10);
txtClass.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputClass);
pnlNorth.add(txtClass);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级删除学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删班级
String clazz = txtClass.getText().trim();
// 按班级删除学生
int count = studentService.deleteStudentsByClass(clazz);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删班级文本框
txtClass.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 【班级】文本框按键事件
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtClass.setText(table.getValueAt(row, 5).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询班级
String clazz = txtClass.getText().trim();
if (!clazz.equals("")) {
students = studentService.findStudentsByClass(clazz);
if (students.size() > 0) {
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查班级！", "警告", JOptionPane.WARNING_MESSAGE);
txtClass.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtClass.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new DeleteStudentsByClassFrame("");
}
}
运行程序，效果如下：
（12）按系部删除学生窗口DeleteStudentsByDepartment：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
/**
* 功能：按系部删除学生记录
*/
public class DeleteStudentsByDepartmentFrame extends JFrame {
/**
* 系部标签
*/
private JLabel lblInputDepartment;
/**
* 系部文本框
*/
private JTextField txtDepartment;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentsByDepartmentFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputDepartment = new JLabel("输入系部：");
txtDepartment = new JTextField(10);
txtDepartment.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputDepartment);
pnlNorth.add(txtDepartment);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按系部删除学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删系部
String department = txtDepartment.getText().trim();
// 按系部删除学生
int count = studentService.deleteStudentsByDepartment(department);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删班级文本框
txtDepartment.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 【系部】文本框按键事件
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtDepartment.setText(table.getValueAt(row, 4).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询系部
String department = txtDepartment.getText().trim();
if (!department.equals("")) {
students = studentService.findStudentsByDepartment(department);
if (students.size() > 0) {
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查系部！", "警告", JOptionPane.WARNING_MESSAGE);
txtDepartment.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtDepartment.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new DeleteStudentsByDepartmentFrame("");
}
}
运行程序，效果如下：
（13）按学号查询学生窗口FindStudentById
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
/**
* 功能：按学号查询学生记录
*/
public class FindStudentByIdFrame extends JFrame {
/**
* 学号标签
*/
private JLabel lblInputId;
/**
* 学号文本框
*/
private JTextField txtId;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentByIdFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputId = new JLabel("输入学号：");
txtId = new JTextField(10);
txtId.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputId);
pnlNorth.add(txtId);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按学号查询学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnPrint.setEnabled(false);
}
});
// 【学号】文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtId.setText(table.getValueAt(row, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String id = txtId.getText().trim();
if (!id.equals("")) {
students.clear();
Student student = studentService.findStudentById(id);
if (student != null) {
// 将查询到的学生添加到列表
students.add(student);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
txtId.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtId.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new FindStudentByIdFrame("");
}
}
运行程序，效果如下：
（14）按姓名查询学生窗口FindStudentsByName：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
/**
* 功能：按姓名查询学生
*/
public class FindStudentsByNameFrame extends JFrame {
/**
* 姓名标签
*/
private JLabel lblInputName;
/**
* 姓名文本框
*/
private JTextField txtName;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentsByNameFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputName = new JLabel("输入姓名：");
txtName = new JTextField(10);
txtName.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputName);
pnlNorth.add(txtName);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按姓名查询学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 【姓名】文本框按键事件
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtName.setText(table.getValueAt(row, 1).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询姓名
String name = txtName.getText().trim();
if (!name.equals("")) {
// 按姓名查询获取学生列表
students = studentService.findStudentsByName(name);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生姓名！", "警告", JOptionPane.WARNING_MESSAGE);
txtName.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("姓名");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtName.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new FindStudentsByNameFrame("");
}
}
运行程序，效果如下：
（15）按班级查询学生窗口FindStudentsByClass：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
/**
* 功能：按班级查询学生记录
*/
public class FindStudentsByClassFrame extends JFrame {
/**
* 班级标签
*/
private JLabel lblInputClass;
/**
* 班级文本框
*/
private JTextField txtClass;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentsByClassFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputClass = new JLabel("输入班级：");
txtClass = new JTextField(10);
txtClass.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputClass);
pnlNorth.add(txtClass);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级查询学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 【班级】文本框按键事件
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtClass.setText(table.getValueAt(row, 5).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询班级
String clazz = txtClass.getText().trim();
if (!clazz.equals("")) {
// 按班级查询获取学生列表
students = studentService.findStudentsByClass(clazz);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查班级！", "警告", JOptionPane.WARNING_MESSAGE);
txtClass.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("班级");
colHead.add("班级");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtClass.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new FindStudentsByClassFrame("");
}
}
运行程序，效果如下：
bug查询表中的记录，记录里面的信息可以修改。
（16）按系部查询学生窗口FindStudentsByDepartment：
package net.lcn.student.bean.gui;
/**
* 功能：按系部查询学生记录
*/
import net.lcn.student.bean.bean.Student;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
public class FindStudentsByDepartmentFrame extends JFrame {
/**
* 系部标签
*/
private JLabel lblInputDepartment;
/**
* 系部文本框
*/
private JTextField txtDepartment;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentsByDepartmentFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputDepartment = new JLabel("输入系部：");
txtDepartment = new JTextField(10);
txtDepartment.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputDepartment);
pnlNorth.add(txtDepartment);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口大小
setSize(600, 350);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按系部查询学生记录");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 【系部】文本框按键事件
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
doQuery();
}
}
});
// 表格单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtDepartment.setText(table.getValueAt(row, 5).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询系部
String department = txtDepartment.getText().trim();
if (!department.equals("")) {
// 按系部查询获取学生列表
students = studentService.findStudentsByDepartment(department);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查系部！", "警告", JOptionPane.WARNING_MESSAGE);
txtDepartment.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("系部");
colHead.add("系部");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("系部");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtDepartment.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new FindStudentsByDepartmentFrame("");
}
}
运行程序，效果如下：
包含错误：
修改：
正确运行效果：
bug：按系部查询，但是显示的是班级
待解决
（17）按性别统计人数窗口CountStudentsBySex：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
/**
* 功能：按性别统计学生人数
*/
public class CountStudentsBySexFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/**
* 按钮
*/
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsBySexFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取按性别统计结果记录行集
rows = studentService.findRowsBySex();
// 设置表头
colHead.add("性别");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口大小
setSize(300, 200);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按性别统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new CountStudentsBySexFrame("");
}
}
运行程序，效果如下：
（18）按班级统计人数窗口CountStudentsByClass：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
/**
* 功能：按班级统计学生人数
*/
public class CountStudentsByClassFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/**
* 按钮
*/
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsByClassFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取按班级统计结果记录行集
rows = studentService.findRowsByClass();
// 设置表头
colHead.add("班级");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口大小
setSize(300, 200);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new CountStudentsByClassFrame("");
}
}
运行程序，效果如下：
（19）按系部统计人数窗口CountStudentsByDepartment：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.service.StudentService;
import net.lcn.student.bean.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
/**
* 功能：按系部统计学生人数
*/
public class CountStudentsByDepartmentFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/**
* 按钮
*/
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsByDepartmentFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取按系部统计结果记录行集
rows = studentService.findRowsByDepartment();
// 设置表头
colHead.add("系部");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口大小
setSize(300, 200);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new CountStudentsByDepartmentFrame("");
}
}
运行程序，效果如下：
（20）设置状态栏信息窗口SetStatusBarFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import net.lcn.student.bean.bean.Status;
import net.lcn.student.bean.service.StatusService;
import net.lcn.student.bean.service.impl.StatusServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
/**
* 功能：设置状态栏信息
*/
public class SetStatusBarFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;
private JPanel panel5;
/**
* 标签
*/
private JLabel lblCollege;
private JLabel lblVersion;
private JLabel lblAuthor;
private JLabel lblTelephone;
private JLabel lblAddress;
private JLabel lblEmail;
/**
* 文本框
*/
private JTextField txtCollege;
private JTextField txtVersion;
private JTextField txtAuthor;
private JTextField txtTelephone;
private JTextField txtAddress;
private JTextField txtEmail;
/**
* 按钮
*/
private JButton btnSave;
private JButton btnExit;
/**
* 状态服务对象
*/
private StatusService statusService;
/**
* 构造方法
*
* @param title
*/
public SetStatusBarFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel5 = new JPanel();
lblCollege = new JLabel("校名：");
lblVersion = new JLabel("版本：");
lblAuthor = new JLabel("作者：");
lblTelephone = new JLabel("电话：");
lblAddress = new JLabel("地址：");
lblEmail = new JLabel("邮件：");
txtCollege = new JTextField(12);
txtVersion = new JTextField(12);
txtAuthor = new JTextField(12);
txtTelephone = new JTextField(12);
txtAddress = new JTextField(29);
txtEmail = new JTextField(29);
btnSave = new JButton("保存[S]");
btnSave.setMnemonic(KeyEvent.VK_S);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.setLayout(new GridLayout(5, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);
panel.add(panel5);
panel1.add(lblCollege);
panel1.add(txtCollege);
panel1.add(lblVersion);
panel1.add(txtVersion);
panel2.add(lblAuthor);
panel2.add(txtAuthor);
panel2.add(lblTelephone);
panel2.add(txtTelephone);
panel3.add(lblAddress);
panel3.add(txtAddress);
panel4.add(lblEmail);
panel4.add(txtEmail);
panel5.add(btnSave);
panel5.add(btnExit);
// 创建状态服务对象
statusService = new StatusServiceImpl();
// 按标识符获取状态对象
Status status = statusService.findStatusById(1);
if (status != null) {
txtCollege.setText(status.getCollege());
txtVersion.setText(status.getVersion());
txtAuthor.setText(status.getAuthor());
txtAddress.setText(status.getAuthor());
txtTelephone.setText(status.getTelephone());
txtAddress.setText(status.getAddress());
txtEmail.setText(status.getEmail());
}
// 设置窗口属性
setResizable(false);
pack();
setLocationRelativeTo(null);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【关闭】按钮事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【保存】按钮事件处理
btnSave.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 获取状态信息对象
Status status = statusService.findStatusById(1);
// 修改属性值
status.setCollege(txtCollege.getText());
status.setVersion(txtVersion.getText());
status.setAuthor(txtAuthor.getText());
status.setTelephone(txtTelephone.getText());
status.setAddress(txtAddress.getText());
status.setEmail(txtEmail.getText());
// 更新状态记录
int count = statusService.updateStatus(status);
// 判断是否更新成功
if (count > 0) {
Application.mainFrame.setStatusBar();
Application.mainFrame.setTitle("学生信息管理系统" + status.getVersion());
}
}
});
}
}
要等到MainFrame类里写好setStatusBar()方法之后，才能测试该程序。
（21）系统主窗口MainFrame：
package net.lcn.student.bean.gui;
import net.lcn.student.bean.app.Application;
import net.lcn.student.bean.bean.Status;
import net.lcn.student.bean.service.StatusService;
import net.lcn.student.bean.service.impl.StatusServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
/**
* 功能：主界面窗口
通过菜单系统
调用各个功能模块
*/
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/background.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);
// 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 SetCollegeInFrame("");
}
});
// 【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 FindStudentsByDepartmentFrame("");
}
});
// 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 CountStudentsByDepartmentFrame("");
}
});
// 【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 DeleteStudentsByClassFrame("");
}
});
// 【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 SetCollegeInFrame("");
}
});
// 【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 CountStudentsByDepartmentFrame("");
}
});
// 【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("");
}
}
启动登录窗口，成功登录后，可以在主界面里通过菜单系统调用各个功能模块。