mailauthenticator.java

Java网络编程实例第7章实例.rar

package receivemail_authentic;

import javax.mail.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class MailAuthenticator extends Authenticator{
   private JDialog passwordDialog=new JDialog(new JFrame(),true);
   private JLabel mainLabel=new JLabel("请输入你的用户名和密码：");
   private JLabel userLabel=new JLabel("用户名：");
   private JLabel passwordLabel=new JLabel("密   码：");
   private JTextField usernameField=new JTextField(20);
   private JPasswordField passwordField=new JPasswordField(20);
   private JButton okButton=new JButton("确定");
   public MailAuthenticator() {
    this("");
   }
   public MailAuthenticator(String username) {
   Container pane=passwordDialog.getContentPane() ;
   pane.setLayout(new GridLayout(4,1));
   pane.add(mainLabel);
   JPanel p2=new JPanel();
   p2.add(userLabel);
   p2.add(usernameField);
   usernameField.setText(username);
   pane.add(p2);
   JPanel p3=new JPanel();
   p3.add(passwordLabel);
   p3.add(passwordField);
   pane.add(p3);
   JPanel p4=new JPanel();
   p4.add(okButton);
   pane.add(p4);
   passwordDialog.pack();

   ActionListener al=new HideDialog();
   okButton.addActionListener(al);
   usernameField.addActionListener(al);
   passwordField.addActionListener(al);

   }
  class HideDialog implements ActionListener{
     public void actionPerformed(ActionEvent e){
        passwordDialog.hide();
     }
  }
  public PasswordAuthentication getPasswordAuthentication(){
     passwordDialog.show();
     String password=new String(passwordField.getPassword());
     String username=usernameField.getText();
     passwordField.setText("");
     return new PasswordAuthentication(username,password);
  }
}