学生管理系统（MySQL）v1.0 第六天
1、在gui包里创建并设置学校信息窗口SetCollegeInfoFrame
package net.student.gui;
import net…student.bean.College;
import net.student.service.CollegeService;
import net.student.service.impl.CollegeServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
/**
-
功能：设置学校信息
/
public class SetCollegeInfoFrame 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;
/**
- 构造方法
- @param title
*/
public SetCollegeInfoFrame(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();
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（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！”);
}
}
});
}
/**
- 主方法
- @param args
*/
public static void main(String[] args) {
new SetCollegeInfoFrame("");
}
}
运行程序，效果如下：
- 面板
2、在gui包里创建修改用户密码窗口ChangePasswordFrame
package net.student.gui;
import net.student.app.Application;
import net.student.bean.User;
import net.student.service.UserService;
import net.student.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
/**
-
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.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（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();
}
}
});
}
/**
-
修改密码方法
*/
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);
}
}
}
/**
- 主方法
- @param args
*/
public static void main(String[] args) {
Application.id = 1;
Application.username = “李刚”;
new ChangePasswordFrame("");
}
}
测试，修改id为1的用户李刚的密码，结果如下：
- 面板
3、在gui包里创建浏览学生窗口BrowseStudentsFrame
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.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
/
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 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() - 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(); }});
}
/**
- 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());
}
}
/**
- 主方法
- @param args
*/
public static void main(String[] args) {
new BrowseStudentsFrame("");
}
}
运行程序，效果如下：
- 声明面板
4、添加学生窗口AddStudentFrame
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.student.service.impl.StudentServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
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;
/* - 当前记录行号
/
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（卸载当前窗口）
setDefaultCloseOperation(JFrame.DISPOSE_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);
txtId.requestFocus();
return;
}// 年龄数字校验 if (!isNumber(txtAge.getText().trim())) { JOptionPane.showMessageDialog(null, "注意：年龄全由数字构成！", "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, "添加记录成功！", "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，测试结果如下：
- 声明面板
5、编辑学生窗口EditStudentFrame
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.student.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.regex.Matcher;
import java.util.regex.Pattern;
import java.util.List;
/**
-
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（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() - 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，测试效果如下：
- 声明面板
6、按学号删除学生窗口DeleteStudentByIdFrame
package net.hw.student.gui;
import net.hw.student.bean.Student;
import net.hw.student.service.StudentService;
import net.hw.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
/
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（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 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，测试结果如下：
7、按班级删除学生窗口DeleteStudentsByClass
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.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（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());
if (row <= table.getRowCount()) {
// 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，测试结果如下：
8、按系部删除学生窗口DeleteStudentsByDepartment
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.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(); - 系部标签
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，测试结果如下：
9、按学号查询学生窗口FindStudentById
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.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
/
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（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 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，测试结果如下：
10、按姓名查询学生窗口FindStudentsByName
package net.student.gui;
import net.student.bean.Student;
import net.student.service.StudentService;
import net.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;
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（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();
}
});
// 【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，测试结果如下：
