在swing中登录和注销
我已经制作了一个包含用户名和密码的表单…并提交按钮所以点击提交后…我必须在单独的程序中进行validation部分，在获得结果为true时将允许用户导航到内部主页…添加禁用登录页面。如果登录详细信息错误，将显示消息对话框..显示错误的用户名和密码..
public void actionPerformed(ActionEvent ae) { if (ae.getSource() == submit) { //to do... } } 不知道如何validation用户详细信息，可以肯定地说，您不希望在EDT的上下文中调用它。
相反，我已经使用SwingWorker为我做了工作（你必须填写）。 它只是将一个true值或false值返回给EDT。
如果登录失败，我们只会显示一个显示“登录失败”消息的JOptionPane 。 否则我们可以简单地处理登录对话框……
import java.awt.BorderLayout; import java.awt.Component; import java.awt.EventQueue; import java.awt.Frame; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.concurrent.ExecutionException; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingUtilities; import javax.swing.SwingWorker; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class TestLogin { public static void main(String[] args) { new TestLogin(); } public TestLogin() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { } JDialog frame = new JDialog((Frame) null, "Login", true); frame.setLayout(new BorderLayout()); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); System.exit(0); } }); } public class TestPane extends JPanel { public TestPane() { setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; gbc.insets = new Insets(4, 4, 4, 4); gbc.anchor = GridBagConstraints.WEST; add(new JLabel("User Name:"), gbc); gbc.gridy++; add(new JLabel("Password:"), gbc); gbc.gridx++; gbc.gridy = 0; add(new JTextField(10), gbc); gbc.gridy++; add(new JPasswordField(10), gbc); JButton okay = new JButton("Okay"); JButton cancel = new JButton("Cancel"); gbc.gridx = 0; gbc.gridy++; gbc.anchor = GridBagConstraints.CENTER; add(okay, gbc); gbc.gridx++; add(cancel, gbc); okay.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { setFormEnabled(false); new LoginWorker().execute(); } }); cancel.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { SwingUtilities.windowForComponent((Component) e.getSource()).dispose(); } }); } protected void setFormEnabled(boolean enabled) { for (Component comp : getComponents()) { comp.setEnabled(enabled); } } protected void loginSuccessful() { SwingUtilities.windowForComponent(this).dispose(); } protected void loginFailed() { JOptionPane.showMessageDialog(this, "Login failed", "Fail", JOptionPane.ERROR_MESSAGE); setFormEnabled(true); } public class LoginWorker extends SwingWorker { @Override protected Boolean doInBackground() throws Exception { boolean login = false; Thread.sleep(5000); login = (int) Math.round(Math.random() * 1) == 0 ? false : true; return login; } @Override protected void done() { try { Boolean login = get(); if (login) { loginSuccessful(); } else { loginFailed(); } } catch (InterruptedException ex) { ex.printStackTrace(); loginFailed(); } catch (ExecutionException ex) { ex.printStackTrace(); loginFailed(); } } } } }