在 MySql 中插入数据后，我一直在尝试刷新 JTable，但我无法使其工作。
数据被填充到 agregar JPanel 中，并在单击按钮后保存，在 mysql 控制台中检查，数据被添加到数据库中，但是当我打开表时，除非重新启动程序，否则它不会更新。
这是我的代码:
public class verTodos extends JPanel {
contactoDAO dao = new contactoDAO();
List<contacto> contactos = dao.getAll();
private JTable table;
public verTodos() {
String[] colName = { "Id", "Nombre", "Apellido", "Telefono",
"Direccion", "Email", "Rubro1", "Rubro2", "Rubro3" };
Object[][] obj = new Object[contactos.size()][10];
for (int i = 0; i < contactos.size(); i++) {
contacto c = contactos.get(i);
obj[i][0] = c.getId();
bj[i][1] = c.getNombre();
obj[i][2] = c.getApellido();
obj[i][3] = c.getTelefono();
obj[i][4] = c.getDireccion();
obj[i][5] = c.getEmail();
obj[i][6] = c.getRubro1();
obj[i][7] = c.getRubro2();
obj[i][8] = c.getRubro3();
setBounds(100, 100, 800, 300);
}
DefaultTableModel contactTableModel = new DefaultTableModel(obj,colName);
table = new JTable(contactTableModel);
setLayout(new BorderLayout(0, 0));
contactTableModel.fireTableDataChanged();
contactTableModel.setColumnIdentifiers(colName);
add(table.getTableHeader(), BorderLayout.NORTH);
JScrollPane scrollPane = new JScrollPane();
add(scrollPane, BorderLayout.CENTER);
scrollPane.setViewportView(table);
repaint();
}
}
这是包含 JPanel 的主屏幕:
public class principal extends JFrame {
JFrame frame = new JFrame();
JPanel container = new JPanel();
CardLayout cl = new CardLayout();
private final JMenuBar menuBar = new JMenuBar();
/.....
.....
private final JMenuItem mntmVerTodos = new JMenuItem("Ver todos");
private final JMenuItem mntmAgregar = new JMenuItem("Agregar");
agregar ag = new agregar();
verTodos ver = new verTodos();
...
...
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new principal();
}
});
}
public principal() {
textField.setMaximumSize(new Dimension(300, 500));
textField.setBounds(new Rectangle(0, 0, 30, 0));
textField.setColumns(10);
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
int X = (screen.width / 2) - (1366 / 2);
int Y = (screen.height / 2) - (720 / 2);
frame.setBounds(X, Y, 1363, 720);
container.setLayout(cl);
ver.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
container.add(ver, "ver");
container.add(ag, "ag");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
frame.getContentPane().add(container);
frame.setJMenuBar(menuBar);
menuBar.add(mnNewMenu);
cl.show(container, "ver");
mntmVerTodos.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
cl.show(container, "ver");
}
});
mnContactos.add(mntmVerTodos);
mnContactos.add(mntmAgregar);
mntmModificar.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
cl.show(container, "mod");
}
});
menuBar.add(btn);
frame.setVisible(true);
}
}
最佳答案
数据库更新后，您需要重新填充模型。添加一个刷新按钮，单击该按钮会更新 contactTableModel
关于java - 在mysql数据库中插入数据后刷新JTable，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17931697/