JAVA-学生管理系统（最简单的SWING+IO读写文件持久化数据）详细代码及步骤
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2022-10-04 10:38:16
（原创）JAVA-学生管理系统（最简单的SWING+IO读写文件持久化数据）详细代码)一、先看项目运行效果：管理员登录：管理员主页：新增：查改删：二、代码结构三、代码（从上往下）：3.1dao包3.1.1AdminDaopublic class AdminDao {//读取管理员数据public Map readAdmin() {Map map = new HashMap&...
（原创）JAVA-学生管理系统（最简单的SWING+IO读写文件持久化数据）详细代码)
一、先看项目运行效果：
管理员登录：
管理员主页：
新增：
查改删：
二、代码结构
三、代码（从上往下）：
3.1 dao包
3.1.1 AdminDao
public class AdminDao {
//读取管理员数据
public Map<String, String> readAdmin() {
Map<String, String> map = new HashMap<>();
try (BufferedReader br = new BufferedReader(new FileReader("admin.txt"))) {
String line = br.readLine();
String[] textData = null;
while (line != null) {
textData = line.split("\\,");
String name = textData[0];
String password = textData[1];
map.put(name, password);
line = br.readLine();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return map;
}
}
3.1.2 StudentDao
public class StudentDao {
//读取学生数据
public ArrayList<Student> readStudent() {
ArrayList<Student> list = new ArrayList<>();
try (BufferedReader br = new BufferedReader(new FileReader("student.txt"))) {
String line = br.readLine();
String[] textData = null;
while (line != null) {
textData = line.split("\\,");
String name = textData[0];
String age = textData[1];
String address = textData[2];
String tel = textData[3];
Student student = new Student(0, name, age, address, tel);
list.add(student);
line = br.readLine();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return list;
}
//写入学生数据
public int writeStudent(Student student) {
ArrayList<Student> list = readStudent();
list.add(student);
int num = 0;
try {
FileWriter fileWriter = new FileWriter("student.txt");
for (int i = 0; i < list.size(); i++) {
Student stu = list.get(i);
fileWriter.write(
stu.getName() + "," + stu.getAge() + "," + stu.getAddress() + "," + stu.getTel() + "\r\n");
}
fileWriter.flush();
fileWriter.close();
num = 1;
} catch (IOException e) {
e.printStackTrace();
}
return num;
}
//删除学生
public int delStudent(String name) {
ArrayList<Student> list = readStudent();
int num = 0;
for (int i = 0; i < list.size(); i++) {
if (name.equals(list.get(i).getName())) {
list.remove(i);
}
}
try {
FileWriter fileWriter = new FileWriter("student.txt");
for (int i = 0; i < list.size(); i++) {
Student stu = list.get(i);
fileWriter.write(
stu.getName() + "," + stu.getAge() + "," + stu.getAddress() + "," + stu.getTel() + "\r\n");
}
fileWriter.flush();
fileWriter.close();
num = 1;
} catch (IOException e) {
e.printStackTrace();
}
return num;
}
//按名字查找学生
public ArrayList<Student> findStudent(String name) {
ArrayList<Student> list = readStudent();
ArrayList<Student> newlist = new ArrayList<>();
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getName().contains(name)){
newlist.add(list.get(i));
}
}
return newlist;
}
}
3.2 model
3.2.1 Admin
//管理员实体类
public class Admin {
private int id;
private String name;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Admin(int id, String name, String password) {
super();
this.id = id;
this.name = name;
this.password = password;
}
public Admin() {
super();
}
}
3.2.2 student
//学生实体类
public class Student {
private int id;
private String name; //姓名
private String age; //年龄
private String address; //地址
private String tel; //电话
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public Student(int id, String name, String age, String address, String tel) {
super();
this.id = id;
this.name = name;
this.age = age;
this.address = address;
this.tel = tel;
}
public Student() {
super();
}
}
3.3 util包
3.3.1 StringUtil
public class StringUtil {
//判空
public static Boolean isNull(String str) {
if (str == null || "".equals(str.trim())) {
return true;
}
return false;
}
//判断日期格式
public static boolean isValidDate(String str) {
boolean convertSuccess = true;
// 指定日期格式为四位年/两位月份/两位日期
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
// 设置lenient为false.
// 否则SimpleDateFormat会比较宽松地验证日期，比如2007/02/29会被接受，并转换成2007/03/01
format.setLenient(false);
format.parse(str);
} catch (ParseException e) {
// e.printStackTrace();
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
convertSuccess = false;
}
return convertSuccess;
}
//判断是否为数字
public static boolean isNumeric(String str) {
String reg = "^[0-9]+(.[0-9]+)?$";
return str.matches(reg);
}
}
3.4 view
3.4.1 AddStudent
public class AddStudent extends JInternalFrame {
private JTextField name;
private JTextField age;
private JTextField address;
private JTextField tel;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
AddStudent frame = new AddStudent();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public AddStudent() {
setIconifiable(true);
setClosable(true);
setTitle("新增学生");
setBounds(100, 100, 260, 319);
JLabel label = new JLabel("姓名：");
name = new JTextField();
name.setColumns(10);
JLabel label_1 = new JLabel("年龄：");
age = new JTextField();
age.setColumns(10);
JLabel label_2 = new JLabel("住址:");
address = new JTextField();
address.setColumns(10);
JLabel label_3 = new JLabel("电话：");
tel = new JTextField();
tel.setColumns(10);
JButton button = new JButton("提交");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
submit();
}
});
button.setIcon(new ImageIcon(AddStudent.class.getResource("/images/submit.png")));
JButton button_1 = new JButton("重置");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
reset();
}
});
button_1.setIcon(new ImageIcon(AddStudent.class.getResource("/images/reset.png")));
GroupLayout groupLayout = new GroupLayout(getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(38)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING, false)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_3)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(tel))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_2)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(address))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
.addComponent(label_1)
.addComponent(label))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING, false)
.addComponent(age)
.addComponent(name, GroupLayout.DEFAULT_SIZE, 114, Short.MAX_VALUE)))))
.addGroup(groupLayout.createSequentialGroup()
.addGap(29)
.addComponent(button)
.addGap(27)
.addComponent(button_1)))
.addContainerGap(34, Short.MAX_VALUE))
);
groupLayout.setVerticalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(45)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label)
.addComponent(name, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(18)
.addComponent(label_1))
.addGroup(groupLayout.createSequentialGroup()
.addGap(17)
.addComponent(age, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addGap(18)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label_2)
.addComponent(address, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(18)
.addComponent(label_3))
.addGroup(groupLayout.createSequentialGroup()
.addGap(19)
.addComponent(tel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addPreferredGap(ComponentPlacement.RELATED, 37, Short.MAX_VALUE)
.addComponent(button)
.addGap(44))
.addGroup(groupLayout.createSequentialGroup()
.addGap(37)
.addComponent(button_1)
.addContainerGap())))
);
getContentPane().setLayout(groupLayout);
}
//提交
private void submit() {
// TODO Auto-generated method stub
String name = this.name.getText();
String age = this.age.getText();
String address = this.address.getText();
String tel = this.tel.getText();
if (StringUtil.isNull(name)) {
JOptionPane.showMessageDialog(null, "姓名不能为空!");
return;
}
if (StringUtil.isNull(age)) {
JOptionPane.showMessageDialog(null, "年龄不能为空!");
return;
}
if (StringUtil.isNull(address)) {
JOptionPane.showMessageDialog(null, "地址不能为空!");
return;
}
if (StringUtil.isNull(tel)) {
JOptionPane.showMessageDialog(null, "电话不能为空!");
return;
}
Student student = new Student(0, name, age, address, tel);
StudentDao studentDao = new StudentDao();
int num = studentDao.writeStudent(student);
if (num != 0) {
JOptionPane.showMessageDialog(null, "新增成功！");
dispose();
}else {
JOptionPane.showMessageDialog(null, "新增失败！");
}
}
//清空
private void reset() {
// TODO Auto-generated method stub
this.name.setText("");
this.age.setText("");
this.address.setText("");
this.tel.setText("");
}
}
3.4.2 AdminMainPage
public class AdminMainPage extends JFrame {
private JPanel contentPane;
private JDesktopPane table;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
AdminMainPage frame = new AdminMainPage();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public AdminMainPage() {
setTitle("管理员主页");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 931, 705);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu menu = new JMenu("新增学生信息");
menu.setIcon(new ImageIcon(AdminMainPage.class.getResource("/images/register.png")));
menuBar.add(menu);
JMenuItem menuItem_1 = new JMenuItem("新增");
menuItem_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
AddStudent addStudent = new AddStudent();
addStudent.setVisible(true);
table.add(addStudent);
}
});
menu.add(menuItem_1);
JMenu menu_1 = new JMenu("维护学生信息");
menu_1.setIcon(new ImageIcon(AdminMainPage.class.getResource("/images/用户.png")));
menuBar.add(menu_1);
JMenuItem mntmNewMenuItem = new JMenuItem("维护");
mntmNewMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
UpdateStudent updateStudent = new UpdateStudent();
updateStudent.setVisible(true);
table.add(updateStudent);
}
});
menu_1.add(mntmNewMenuItem);
JMenu menu_2 = new JMenu("安全退出");
menu_2.setIcon(new ImageIcon(AdminMainPage.class.getResource("/images/login.png")));
menuBar.add(menu_2);
JMenuItem menuItem = new JMenuItem("退出");
menuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
exit();
}
});
menu_2.add(menuItem);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
table = new JDesktopPane();
table.setBackground(new Color(0, 128, 128));
contentPane.add(table, BorderLayout.CENTER);
// 窗口居中
this.setLocationRelativeTo(null);
}
private void exit() {
// TODO Auto-generated method stub
dispose();
}
}
3.4.3 Login
public class Login extends JFrame {
private JPanel contentPane;
private JTextField username;
private JPasswordField password;
private static Login frame;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
frame = new Login();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Login() {
setTitle("欢迎来到学生管理系统");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
JLabel lblNewLabel = new JLabel("学生管理系统");
lblNewLabel.setIcon(new ImageIcon(Login.class.getResource("/images/学生.png")));
lblNewLabel.setFont(new Font("宋体", Font.BOLD, 20));
JLabel label = new JLabel("\u8D26\u53F7\uFF1A");
label.setIcon(new ImageIcon(Login.class.getResource("/images/user.png")));
label.setFont(new Font("宋体", Font.PLAIN, 14));
username = new JTextField();
username.setColumns(10);
JLabel label_1 = new JLabel("\u5BC6\u7801\uFF1A");
label_1.setIcon(new ImageIcon(Login.class.getResource("/images/password.png")));
label_1.setFont(new Font("宋体", Font.PLAIN, 14));
password = new JPasswordField();
JButton button = new JButton("\u767B\u5F55");
button.setIcon(new ImageIcon(Login.class.getResource("/images/login.png")));
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Login();
}
});
JButton btnNewButton = new JButton("重置");
btnNewButton.setIcon(new ImageIcon(Login.class.getResource("/images/reset.png")));
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
reset();
}
});
GroupLayout gl_contentPane = new GroupLayout(contentPane);
gl_contentPane.setHorizontalGroup(gl_contentPane.createParallelGroup(Alignment.TRAILING).addGroup(gl_contentPane
.createSequentialGroup().addContainerGap(110, Short.MAX_VALUE)
.addGroup(gl_contentPane.createParallelGroup(Alignment.TRAILING)
.addGroup(gl_contentPane.createSequentialGroup().addComponent(button).addGap(18)
.addComponent(btnNewButton).addGap(
120))
.addGroup(gl_contentPane.createSequentialGroup().addGroup(gl_contentPane
.createParallelGroup(Alignment.LEADING).addGroup(gl_contentPane
.createParallelGroup(Alignment.TRAILING, false).addGroup(gl_contentPane
.createSequentialGroup()
.addComponent(label_1, GroupLayout.DEFAULT_SIZE,
GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(ComponentPlacement.UNRELATED).addComponent(password,
GroupLayout.PREFERRED_SIZE, 133, GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup().addComponent(label).addGap(10)
.addComponent(username, GroupLayout.PREFERRED_SIZE, 133,
GroupLayout.PREFERRED_SIZE)))
.addComponent(lblNewLabel)).addGap(120)))));
gl_contentPane
.setVerticalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup().addGap(28).addComponent(lblNewLabel)
.addGap(26)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup().addGap(2)
.addComponent(label))
.addComponent(username, GroupLayout.PREFERRED_SIZE,
GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
.addGap(20)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(label_1, GroupLayout.PREFERRED_SIZE, 16,
GroupLayout.PREFERRED_SIZE)
.addComponent(password, GroupLayout.PREFERRED_SIZE,
GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
.addGap(18)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(btnNewButton).addComponent(button))
.addContainerGap(26, Short.MAX_VALUE)));
contentPane.setLayout(gl_contentPane);
ButtonGroup group = new ButtonGroup();
// 居中显示
this.setLocationRelativeTo(null);
}
private void reset() {
// TODO Auto-generated method stub
this.username.setText("");
this.password.setText("");
}
private void Login() {
// TODO Auto-generated method stub
String username = this.username.getText();
String password = new String(this.password.getPassword());
if (StringUtil.isNull(username)) {
JOptionPane.showMessageDialog(null, "用户名不能为空!");
return;
}
if (StringUtil.isNull(password)) {
JOptionPane.showMessageDialog(null, "密码不能为空!");
return;
}
AdminDao adminDao = new AdminDao();
Map<String, String> map = adminDao.readAdmin();
if (map.get(username) == null) {
JOptionPane.showMessageDialog(null, "账号错误!");
return;
} else {
if (!map.get(username).equals(password)) {
JOptionPane.showMessageDialog(null, "密码错误!");
return;
} else {
JOptionPane.showMessageDialog(null, "登入成功!");
frame.setVisible(false);
AdminMainPage adminMainPage = new AdminMainPage();
adminMainPage.setVisible(true);
}
}
}
}
3.4.4 UpdateStudent
public class UpdateStudent extends JInternalFrame {
private JTextField findname;
private JTable table;
private JTextField name;
private JTextField age;
private JTextField address;
private JTextField tel;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UpdateStudent frame = new UpdateStudent();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public UpdateStudent() {
setTitle("维护学生信息");
setIconifiable(true);
setClosable(true);
setBounds(100, 100, 792, 492);
JScrollPane scrollPane = new JScrollPane();
JLabel label = new JLabel("学生姓名：");
findname = new JTextField();
findname.setColumns(10);
JButton button = new JButton("搜索");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
findStudent();
}
});
button.setIcon(new ImageIcon(UpdateStudent.class.getResource("/images/搜索.png")));
JLabel label_1 = new JLabel("姓名：");
name = new JTextField();
name.setEditable(false);
name.setColumns(10);
JLabel label_2 = new JLabel("年龄：");
age = new JTextField();
age.setColumns(10);
JLabel label_3 = new JLabel("地址：");
address = new JTextField();
address.setColumns(10);
JLabel label_4 = new JLabel("电话：");
tel = new JTextField();
tel.setColumns(10);
JButton button_1 = new JButton("修改");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
updateStudent();
}
});
button_1.setIcon(new ImageIcon(UpdateStudent.class.getResource("/images/submit.png")));
JButton button_2 = new JButton("删除");
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
delStudent();
}
});
button_2.setIcon(new ImageIcon(UpdateStudent.class.getResource("/images/删除(1).png")));
GroupLayout groupLayout = new GroupLayout(getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(109)
.addComponent(label)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(findname, GroupLayout.PREFERRED_SIZE, 158, GroupLayout.PREFERRED_SIZE)
.addGap(18)
.addComponent(button))
.addGroup(groupLayout.createSequentialGroup()
.addGap(101)
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_1)
.addGap(7)
.addComponent(name, GroupLayout.PREFERRED_SIZE, 145, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_2)
.addGap(8)
.addComponent(age, GroupLayout.PREFERRED_SIZE, 146, GroupLayout.PREFERRED_SIZE))
.addComponent(button_1))
.addGap(85)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(button_2)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING, false)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_4)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(tel))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(label_3)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(address, GroupLayout.PREFERRED_SIZE, 169, GroupLayout.PREFERRED_SIZE)))))
.addGroup(groupLayout.createSequentialGroup()
.addGap(71)
.addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, 633, GroupLayout.PREFERRED_SIZE)))
.addContainerGap(72, Short.MAX_VALUE))
);
groupLayout.setVerticalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(47)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label)
.addComponent(findname, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(button))
.addGap(122)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(45)
.addComponent(label_1))
.addGroup(groupLayout.createSequentialGroup()
.addGap(43)
.addComponent(name, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(36)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(age, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(label_4)
.addComponent(tel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addGroup(groupLayout.createSequentialGroup()
.addGap(39)
.addComponent(label_2))))
.addGroup(groupLayout.createSequentialGroup()
.addGap(44)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label_3)
.addComponent(address, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))))
.addGap(62)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(button_1)
.addComponent(button_2)))
.addGroup(groupLayout.createSequentialGroup()
.addGap(90)
.addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, 108, GroupLayout.PREFERRED_SIZE)))
.addContainerGap(60, Short.MAX_VALUE))
);
table = new JTable();
table.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
pickRow();
}
});
table.setModel(new DefaultTableModel(
new Object[][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
},
new String[] {
"\u59D3\u540D", "\u5E74\u9F84", "\u5730\u5740", "\u7535\u8BDD"
}
) {
boolean[] columnEditables = new boolean[] {
false, false, false, false
};
public boolean isCellEditable(int row, int column) {
return columnEditables[column];
}
});
scrollPane.setViewportView(table);
getContentPane().setLayout(groupLayout);
filltable("");
}
private void updateStudent() {
// TODO Auto-generated method stub
String name = this.name.getText();
String age = this.age.getText();
String address = this.address.getText();
String tel = this.tel.getText();
if (StringUtil.isNull(name)) {
JOptionPane.showMessageDialog(null, "姓名不能为空!");
return;
}
if (StringUtil.isNull(age)) {
JOptionPane.showMessageDialog(null, "年龄不能为空!");
return;
}
if (StringUtil.isNull(address)) {
JOptionPane.showMessageDialog(null, "地址不能为空!");
return;
}
if (StringUtil.isNull(tel)) {
JOptionPane.showMessageDialog(null, "电话不能为空!");
return;
}
Student student = new Student(0, name, age, address, tel);
StudentDao studentDao = new StudentDao();
studentDao.delStudent(name);
int num = studentDao.writeStudent(student);
if (num != 0) {
JOptionPane.showMessageDialog(null, "修改成功！");
filltable("");
}else {
JOptionPane.showMessageDialog(null, "修改失败！");
}
}
private void findStudent() {
// TODO Auto-generated method stub
String name = this.findname.getText();
filltable(name);
}
private void delStudent() {
// TODO Auto-generated method stub
int result = JOptionPane.showConfirmDialog(null, "是否删除该学生？");
if (result == 0) {
String name = this.name.getText();
StudentDao studentDao = new StudentDao();
int num = studentDao.delStudent(name);
if (num != 0) {
JOptionPane.showMessageDialog(null, "删除成功！");
filltable("");
cleanPickRow();
}else {
JOptionPane.showMessageDialog(null, "删除失败！");
}
}
}
private void cleanPickRow() {
// TODO Auto-generated method stub
this.name.setText("");
this.age.setText("");
this.address.setText("");
this.tel.setText("");
}
private void pickRow() {
// TODO Auto-generated method stub
int row = table.getSelectedRow();
this.name.setText((String) table.getValueAt(row, 0));
this.age.setText((String) table.getValueAt(row, 1));
this.address.setText((String) table.getValueAt(row, 2));
this.tel.setText((String) table.getValueAt(row, 3));
}
private void filltable(String name) {
// TODO Auto-generated method stub
DefaultTableModel dtm = (DefaultTableModel) table.getModel();
dtm.setRowCount(0);
StudentDao studentDao = new StudentDao();
ArrayList<Student> list = studentDao.findStudent(name);
for (int i = 0; i < list.size(); i++) {
Vector<Object> v = new Vector<>();
v.add(list.get(i).getName());
v.add(list.get(i).getAge());
v.add(list.get(i).getAddress());
v.add(list.get(i).getTel());
dtm.addRow(v);
}
}
}
本文地址：https://blog.csdn.net/weixin_44197478/article/details/107364885