创建应用程序类，创建窗口界面类
作者：19计应3班 贾杨庆
在net.jyq.student.apps.创建包app
1. 在net.jyq.student.apps.创建包app
2. 在app包中创建Application
出错了还要创建创建三个类LoginFrame、RegisterFrame和MainFrame
net.jyq.student.apps.创建包gui
3.在gui包中创建三个类LoginFrame、RegisterFrame和MainFrame
在主程序中alter+enter引用这个几个类
创建窗口界面类
1. 创建主界面窗口MainFrame
package net.jyq.student.gui;
import net.jyq.student.app.Application;
import net.jyq.student.bean.Status;
import net.jyq.student.service.StatusService;
import net.jyq.student.service.impl.StatusServiceImpl;
import javax.swing.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class MainFrame extends JFrame {
//声明变量
private Status status;
private StatusService statusService;
//添加一个构造方法
public MainFrame(String title){
super(title);
//初始化图形用户界面
initGUI();
}
//初始化图形用户
public void initGUI(){
//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());
//设置窗口默认关闭方式
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//注册窗口监听器，创建狂口适配器，编写事件处理代码
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,"你要退出系统吗","学生管理系统",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("学生信息管理心态"+status.getVersion());
}
}
//编写主方法，实例化主窗口，设置空标题
public static void main(String[] args) {
Application.mainFrame=new MainFrame("");
}
}
2. 创建用户登录窗口LoginFrame
package net.jyq.student.gui;
import net.jyq.student.app.Application;
import net.jyq.student.bean.Status;
import net.jyq.student.bean.User;
import net.jyq.student.service.StatusService;
import net.jyq.student.service.UserService;
import net.jyq.student.service.impl.StatusServiceImpl;
import net.jyq.student.service.impl.UserServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
public class LoginFrame extends JFrame {
//声明用户登录窗口所需变量
private String username;
private String password;
private JLabel lblUsername;
private JLabel lblPassword;
private JTextField txtusername;
private JPasswordField txtPassword;
private JButton btnok;
private JButton btnCanel;
private JButton btnRegister;
private JPanel panel,panel1,panel2,panel3;
//添加单参构造方法
public LoginFrame(String title){
super(title);
initGUI();
}
//初始化图形界面
private void initGUI(){
//实例化组件
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[0]");
btnCanel=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(btnCanel);
panel3.add(btnRegister);
//设置主面板为三行一列的网格布局
panel.setLayout(new GridLayout(3,1));
//将三个小面板添加D到主面板
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
//设置热键字母，以及密码框的回显字符
btnok.setMnemonic(KeyEvent.VK_O);
btnCanel.setMnemonic(KeyEvent.VK_C);
btnRegister.setMnemonic(KeyEvent.VK_R);
txtPassword.setEchoChar('*');
//设置窗口大小
setSize(250,200);
//设置屏幕居中
setLocationRelativeTo(null);
//设置窗口大小不可调整
setResizable(false);
//设置窗口可见
pack();
setVisible(true);
//设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//确定单击事件处理
btnok.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
login();
}
});
//确定事件处理
btnok.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
//按下回车键，调用登录方法
if(e.getKeyCode()==KeyEvent.VK_ENTER){
login();
}
}
});
}
private void login() {
// 获取用户名
username = txtusername.getText().trim();
// 获取密码
password = new String(txtPassword.getPassword());
// 创建用户服务对象
UserService userService = new UserServiceImpl();
// 调用登录方法，返回登录用户对象
User user = userService.login(username, password);
// 判断登录用户是否为空，决定登录是否成功
if (user != null) {
// 隐藏登录窗口
Application.loginFrame.setVisible(false);
// 定义状态服务对象
StatusService statusService = new StatusServiceImpl();
// 获取状态对象
Status status = statusService.findStatusById(1);
// 保存登录用户的信息
Application.id = user.getId();
Application.username = user.getUsername();
Application.password = user.getPassword();
// 提示用户登录成功
JOptionPane.showMessageDialog(null,
"欢迎使用学生信息管理系统" + status.getVersion(),
"用户登录", JOptionPane.INFORMATION_MESSAGE);
// 显示系统主窗口
Application.mainFrame = new MainFrame("");
// 释放登录窗口
Application.loginFrame.dispose();
} else {
// 隐藏登录窗口
Application.loginFrame.setVisible(false);
// 提示用户登录失败，要重新输入用户名或密码
JOptionPane.showMessageDialog(null,
"用户名或密码错误，请重新输入！",
"用户登录", JOptionPane.ERROR_MESSAGE);
// 显示登录窗口
Application.loginFrame.setVisible(true);
// 用户名文本框内容全选
txtusername.selectAll();
// 密码文本框内容全选
txtPassword.selectAll();
// 用户名文本框获取焦点
txtusername.requestFocus();
}
}
public static void main(String[] args) {
Application.loginFrame=new LoginFrame("用户登录");
}
}
1. 在initGUI()方法里编写【确定】按钮单击事件处理代码
2.在initGUI()方法里编写[用户名]文本框按键事件处理代码
3.在initGUI()方法里编写[密码]文本框按键事件处理代码
4.在initGUI()方法里编写[取消]文本框按键事件处理代码
5.在initGUI()方法里编写[注册]文本框按键事件处理代码
3.创建用户注册窗口RegisterFrame
package net.jyq.student.gui;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.Date;
import java.sql.Timestamp;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import net.jyq.student.app.Application;
import net.jyq.student.bean.User;
import net.jyq.student.service.UserService;
import net.jyq.student.service.impl.UserServiceImpl;
public class RegisterFrame extends JFrame{
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblPhone;
private JTextField txtUsername;
private JTextField txtPhone;
private JPasswordField txtPassword;
private JButton btnSubmit;
private JButton btnCancel;
private JButton btnLogin;
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;
private String username;
private String password;
private String phone;
private Timestamp registerTime;
public RegisterFrame(String title) {
super(title);
initGUI();
}
private void initGUI() {
//创建组件(面板与控件)
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
lblUsername = new JLabel("用户名: ");
lblPassword = new JLabel("密码: ");
lblPhone = new JLabel("电话: ");
txtUsername = new JTextField("",15);
txtPassword = new JPasswordField("",15);
txtPhone = new JTextField("",15);
btnSubmit = new JButton("提交[S]");
btnCancel = new JButton("取消[C]");
btnLogin = new JButton("登录[L]");
//将控件添加到四个小面板
panel1.add(lblUsername);
panel1.add(txtUsername);
panel2.add(lblPassword);
panel2.add(txtPassword);
panel3.add(lblPhone);
panel3.add(txtPhone);
panel4.add(btnSubmit);
panel4.add(btnCancel);
panel4.add(btnLogin);
//设置大面板布局,将四个小面板添加到大面板
panel.setLayout(new GridLayout(4, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);
//设置窗口大小
setSize(250,200);
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口不可调整大小
setResizable(false);
//设置窗口刚好容纳组件
pack();
//设置窗口标题
setTitle("用户注册");
//设置窗口可见
setVisible(true);
//注册窗口监听器
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
//卸载当前窗口---注册可见
dispose();
//让登录窗口可见
Application.loginFrame.setVisible(true);
}
});
//[提交]按钮单击事件处理
btnSubmit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
register();
}
});
//[提交]按钮按键事件处理
btnSubmit.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER) {
register();
}
}
});
//[取消]按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//显示登陆窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});
//[登陆]按钮单击事件处理
btnLogin.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
//显示登陆窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});
//[用户名]文本框按键事件处理
txtUsername.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER)
txtPassword.requestFocus();
}
});
//[密码]文本框按键事件处理
txtPassword.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtPhone.requestFocus();
}
}
});
//[电话]文本框按键事件处理
txtPhone.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
btnSubmit.requestFocus();
}
}
});
}
private void register() {
//获取用户名
username = txtUsername.getText().trim();
//获取密码
password = new String(txtPassword.getPassword());
//获取电话
phone = txtPhone.getText().trim();
//定义当前时间为注册时间
registerTime = new Timestamp(System.currentTimeMillis());
//对用户名进行非空校验
if(username.equals("")) {
JOptionPane.showMessageDialog(null, "用户名不能为空!","学生信息管理系统",JOptionPane.WARNING_MESSAGE);
txtUsername.requestFocus();
return;
}
//对密码进行非空校验
if (txtPassword.equals("")) {
JOptionPane.showMessageDialog(null, "密码不能为空!","学生信息管理系统",JOptionPane.WARNING_MESSAGE);
txtPassword.requestFocus();
return;
}
//定义用户服务对象
UserService userService = new UserServiceImpl();
//创建用户
User user = new User();
user.setUsername(username);
user.setPassword(password);
user.setTelephone(phone);
user.setRegisterTime(registerTime);
//添加用户
int count = userService.addUser(user);
//判断是否添加成功
if (count > 0) {
setVisible(false);
JOptionPane.showMessageDialog(null, "恭喜!注册成功!","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE);
setVisible(true);
}else {
JOptionPane.showMessageDialog(null, "遗憾!注册失败!","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE);
}
}
public static void main(String[] args) {
Application.registerFrame = new RegisterFrame("用户注册");
}
}
4. 创建设置学校信息窗口SetCollegeInfoFrame
package net.jyq.student.gui;
import net.jyq.student.bean.College;
import net.jyq.student.service.CollegeService;
import net.jyq.student.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;
/**
* 功能：设置学校信息
* 作者：华卫
* 日期：2020年06月07日
*/
public class SetCollegeInfoFrame extends JFrame {
JPanel panel;
JPanel pnlNorth;
JPanel panel1;
JPanel panel2;
JPanel panel3;
JPanel panel4;
JPanel panel5;
JPanel pnlCenter;
JPanel pnlSouth;
JLabel lblName;
JLabel lblPresident;
JLabel lblStartTime;
JLabel lblTelephone;
JLabel lblEmail;
JLabel lblAddress;
JLabel lblProfile;
JButton btnSave;
JButton btnExit;
JTextField txtName;
JTextField txtPresident;
JTextField txtStartTime;
JTextField txtTelephone;
JTextField txtEMail;
JTextField txtAddress;
JTextArea txtProfile;
JScrollPane scrollPane;
private CollegeService collegeService;
private College college;
private int id = 1;
public SetCollegeInfoFrame(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();
pnlCenter = new JPanel();
pnlSouth = 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);// 让文本区自动换行
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，将北面板、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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 【关闭】按钮单击事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 关闭窗口
dispose();
}
});
// 【保存】按钮单击事件处理
btnSave.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
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 e) {
// 提示用户更新失败
JOptionPane.showMessageDialog(null, "更新数据失败！");
}
}
});
}
public static void main(String[] args) {
new SetCollegeInfoFrame("设置学校信息");
}
}
5.创建修改用户密码窗口ChangePasswordFrame
package net.jyq.student.gui;
import net.jyq.student.app.Application;
import net.jyq.student.bean.User;
import net.jyq.student.service.UserService;
import net.jyq.student.service.impl.UserServiceImpl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
/**
* 功能：修改用户密码
* 作者：华卫
* 日期：2020年06月07日
*/
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;
public ChangePasswordFrame(String title) {
super(title);
initGUI();
}
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.setEditable(false);
txtPassword = new JPasswordField(20);
txtNewPassword1 = new JPasswordField(20);
txtNewPassword2 = new JPasswordField(20);
btnOK = new JButton("确定[O]");
btnOK.setMnemonic(KeyEvent.VK_O);
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);
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 设置控件属性
txtUsername.setEditable(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();
}
}
});
}
private void changePassword() {
// 获取用户信息
int id = Application.id;
String username = Application.username;
// 保存用户输入的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，请重新输入！", "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！", "设置密码", JOptionPane.WARNING_MESSAGE);
}
}
}
public static void main(String[] args) {
Application.id = 4;
Application.username = "李红";
new ChangePasswordFrame("修改用户密码");
}
}
6.创建浏览学生窗口BrowseStudentsFrame
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.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.util.List;
/**
* 功能：浏览学生记录
* 作者：华卫
* 日期：2020年06月17日
*/
public class BrowseStudentsFrame extends JFrame {
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 JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
private JButton btnTop;
private JButton btnPrevious;
private JButton btnNext;
private JButton btnBottom;
private JButton btnExit;
private int currentRow; // 当前记录行号
private List<Student> students; // 学生列表对象
StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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()) {
// 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();
// 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();
}
});
}
/**
* 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 - 1).getId());
txtName.setText(students.get(currentRow - 1).getName());
txtSex.setText(students.get(currentRow - 1).getSex());
txtAge.setText(students.get(currentRow - 1).getAge() + "");
txtDepartment.setText(students.get(currentRow - 1).getDepartment());
txtClass.setText(students.get(currentRow - 1).getClazz());
txtTelephone.setText(students.get(currentRow - 1).getTelephone());
}
}
public static void main(String[] args) {
new BrowseStudentsFrame("");
}
}
7.创建浏览学生窗口AddStudentFrame
package net.jyq.student.gui;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.Date;
import java.sql.Timestamp;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import net.jyq.student.app.Application;
import net.jyq.student.bean.User;
import net.jyq.student.service.UserService;
import net.jyq.student.service.impl.UserServiceImpl;
public class RegisterFrame extends JFrame{
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblPhone;
private JTextField txtUsername;
private JTextField txtPhone;
private JPasswordField txtPassword;
private JButton btnSubmit;
private JButton btnCancel;
private JButton btnLogin;
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;
private String username;
private String password;
private String phone;
private Timestamp registerTime;
public RegisterFrame(String title) {
super(title);
initGUI();
}
private void initGUI() {
//创建组件(面板与控件)
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
lblUsername = new JLabel("用户名: ");
lblPassword = new JLabel("密码: ");
lblPhone = new JLabel("电话: ");
txtUsername = new JTextField("",15);
txtPassword = new JPasswordField("",15);
txtPhone = new JTextField("",15);
btnSubmit = new JButton("提交[S]");
btnCancel = new JButton("取消[C]");
btnLogin = new JButton("登录[L]");
//将控件添加到四个小面板
panel1.add(lblUsername);
panel1.add(txtUsername);
panel2.add(lblPassword);
panel2.add(txtPassword);
panel3.add(lblPhone);
panel3.add(txtPhone);
panel4.add(btnSubmit);
panel4.add(btnCancel);
panel4.add(btnLogin);
//设置大面板布局,将四个小面板添加到大面板
panel.setLayout(new GridLayout(4, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);
//设置窗口大小
setSize(250,200);
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口不可调整大小
setResizable(false);
//设置窗口刚好容纳组件
pack();
//设置窗口标题
setTitle("用户注册");
//设置窗口可见
setVisible(true);
//注册窗口监听器
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
//卸载当前窗口---注册可见
dispose();
//让登录窗口可见
Application.loginFrame.setVisible(true);
}
});
//[提交]按钮单击事件处理
btnSubmit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
register();
}
});
//[提交]按钮按键事件处理
btnSubmit.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER) {
register();
}
}
});
//[取消]按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//显示登陆窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});
//[登陆]按钮单击事件处理
btnLogin.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
//显示登陆窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});
//[用户名]文本框按键事件处理
txtUsername.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER)
txtPassword.requestFocus();
}
});
//[密码]文本框按键事件处理
txtPassword.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtPhone.requestFocus();
}
}
});
//[电话]文本框按键事件处理
txtPhone.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
btnSubmit.requestFocus();
}
}
});
}
private void register() {
//获取用户名
username = txtUsername.getText().trim();
//获取密码
password = new String(txtPassword.getPassword());
//获取电话
phone = txtPhone.getText().trim();
//定义当前时间为注册时间
registerTime = new Timestamp(System.currentTimeMillis());
//对用户名进行非空校验
if(username.equals("")) {
JOptionPane.showMessageDialog(null, "用户名不能为空!","学生信息管理系统",JOptionPane.WARNING_MESSAGE);
txtUsername.requestFocus();
return;
}
//对密码进行非空校验
if (txtPassword.equals("")) {
JOptionPane.showMessageDialog(null, "密码不能为空!","学生信息管理系统",JOptionPane.WARNING_MESSAGE);
txtPassword.requestFocus();
return;
}
//定义用户服务对象
UserService userService = new UserServiceImpl();
//创建用户
User user = new User();
user.setUsername(username);
user.setPassword(password);
user.setTelephone(phone);
user.setRegisterTime(registerTime);
//添加用户
int count = userService.addUser(user);
//判断是否添加成功
if (count > 0) {
setVisible(false);
JOptionPane.showMessageDialog(null, "恭喜!注册成功!","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE);
setVisible(true);
}else {
JOptionPane.showMessageDialog(null, "遗憾!注册失败!","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE);
}
}
public static void main(String[] args) {
Application.registerFrame = new RegisterFrame("用户注册");
}
}
运行结果
8.创建DeleteStudentByIdFrame方法
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import java.util.List;
/**
* 功能：按学号删除学生记录
* 作者：华卫
* 日期：2020年07月02日
*/
public class DeleteStudentByIdFrame extends JFrame {
private JLabel lblInputId; // 学号标签
private JTextField txtId; // 学号文本框
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private int currentRow; // 当前记录行号
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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<String> currentRow = new Vector<String>();
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("");
}
}
9.创建DeleteStudentsByClassFrame 方法
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import java.util.List;
public class DeleteStudentsByClassFrame extends JFrame {
private JLabel lblInputClass; // 班级标签
private JTextField txtClass; // 班级文本框
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private int currentRow; // 当前记录行号
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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) {
// 获取待删学生班级
String class1 = txtClass.getText().trim();
// 按班级删除学生
int count = studentService.deleteStudentByClass(class1);
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 Class = txtClass.getText().trim();
if (!Class.equals("")) {
students.clear();
List<Student> student = studentService.findStudentByClass(Class);
if (student != null) {
// 将查询到的学生添加到列表
students.addAll(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<String> currentRow = new Vector<String>();
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("");
}
}
10.创建DeleteStudentsByDepartmentFrame
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.service.impl.StudentServiceImpl;
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import java.util.List;
public class DeleteStudentsByDepartmentFrame extends JFrame {
private JLabel lblInputDepartment; // 系部标签
private JTextField txtDepartment; // 系部文本框
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private int currentRow; // 当前记录行号
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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) {
// 获取待删学生系部
String department = txtDepartment.getText().trim();
// 按系部删除学生
int count = studentService.deleteStudentByDpartment(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();
// 清空待删学生系部文本框
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.clear();
List<Student> student = studentService.findStudentByDepartment(Department);
if (student != null) {
// 将查询到的学生添加到列表
students.addAll(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<String> currentRow = new Vector<String>();
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("");
}
}
运行结果
11.创建FindStudentByIdFrame方法
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.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.Vector;
import java.util.List;
/**
* 功能：按学号查询学生记录
* 作者：华卫
* 日期：2020年07月05日
*/
public class FindStudentByIdFrame extends JFrame {
private JLabel lblInputId; // 学号标签
private JTextField txtId; // 学号文本框
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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<String> currentRow = new Vector<String>();
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);
}
}
public static void main(String[] args) {
new FindStudentByIdFrame("");
}
}
运行结果
12.创建FindStudentsByNameFrame
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.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.Vector;
import java.util.List;
/**
* 功能：按学号查询学生记录
* 作者：华卫
* 日期：2020年07月05日
*/
public class FindStudentsByNameFrame extends JFrame {
private JLabel lblInputName; //
private JTextField txtName; //
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
public FindStudentsByNameFrame(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();
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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
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, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String name = txtName.getText().trim();
if (!name.equals("")) {
students.clear();
List<Student>student = studentService.findStudentsByName(name);
if (student != null) {
// 将查询到的学生添加到列表
students.addAll(student);
}
// 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("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<String> currentRow = new Vector<String>();
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);
}
}
public static void main(String[] args) {
new FindStudentsByNameFrame ("");
}
}
运行结果
13.创建FindStudentsByDepartmentFrame方法
package net.jyq.student.gui;
import net.jyq.student.bean.Student;
import net.jyq.student.service.StudentService;
import net.jyq.student.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.Vector;
import java.util.List;
/**
* 功能：按学号查询学生记录
* 作者：华卫
* 日期：2020年07月05日
*/
public class FindStudentsByDepartmentFrame extends JFrame {
private JLabel lblInputDepartment; //
private JTextField txtDepartment; //
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private List<Student> students; // 学生列表
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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
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, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String department= txtDepartment.getText().trim();
if (!department.equals("")) {
students.clear();
List<Student>student = studentService.findStudentByDepartment(department);
if (student != null) {
// 将查询到的学生添加到列表
students.addAll(student);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生姓名！", "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<String> currentRow = new Vector<String>();
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);
}
}
public static void main(String[] args) {
new FindStudentsByDepartmentFrame ("");
}
}
运行结果
14.创建CountStudentsBySexFrame方法
package net.jyq.student.gui;
import net.jyq.student.service.StudentService;
import net.jyq.student.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
* 作者：华卫
* 日期：2020年07月05日
*/
public class CountStudentsBySexFrame extends JFrame {
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private StudentService studentService; // 学生服务对象
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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();
}
}
});
}
public static void main(String[] args) {
new CountStudentsBySexFrame("");
}
}
运行结果
15.创建CountStudentsByClassFrame
package net.jyq.student.gui;
import net.jyq.student.service.StudentService;
import net.jyq.student.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
* 作者：华卫
* 日期：2020年07月05日
*/
public class CountStudentsByClassFrame extends JFrame {
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private StudentService studentService; // 学生服务对象
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();
// 获取按性别统计结果记录行集
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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();
}
}
});
}
public static void main(String[] args) {
new CountStudentsByClassFrame("");
}
}
运行结果
16.创建CountStudentsByDepartmentFrame方法
package net.jyq.student.gui;
import net.jyq.student.service.StudentService;
import net.jyq.student.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 {
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JButton btnPrint;
private JButton btnExit;
private JScrollPane scroller; // 滚动面板
private Vector rows; // 记录行集
private Vector<String> colHead; // 表格列标题
private JTable table; // 表格
private StudentService studentService; // 学生服务对象
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();
// 获取按性别统计结果记录行集
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("按系部统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 【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();
}
}
});
}
public static void main(String[] args) {
new CountStudentsByClassFrame("");
}
}
运行结果
在编写countstudnet这个方法都出现同样的错误
不能识别数据表的字段名称，只能在StudentDaoImpl把计数方法中查找的字段名称改为字段数
总结：此次在编写gui界面，是第一次触碰gui,比较陌生，随时编写的代码越多，也对gui界面有了一定的认识，会编写简单的代码。此次代码也是在这几次中最多的，我曾几次犯了低级错误，打错代码。希望在后面，能越来越流畅。