用Java实现E-mail客户端.rar_java E-ma_java mail_java mail api_javamail_

import java.awt.*; import java.awt.event.*; import java.net.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.swing.*; import javax.swing.event.*; // The E-mail Client. public class EmailClient extends JFrame { // Message table's data model. private MessagesTableModel tableModel; // Table listing messages. private JTable table; // This the text area for displaying messages. private JTextArea messageTextArea; /* This is the split panel that holds the messages table and the message view panel. */ private JSplitPane splitPane; // These are the buttons for managing the selected message. private JButton replyButton, forwardButton, deleteButton; // Currently selected message in table. private Message selectedMessage; // Flag for whether or not a message is being deleted. private boolean deleting; // This is the JavaMail session. private Session session; // Constructor for E-mail Client. public EmailClient() { // Set application title. setTitle("E-mail Client"); // Set window size. setSize(640, 480); // Handle window closing events. addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { actionExit(); } }); // Setup file menu. JMenuBar menuBar = new JMenuBar(); JMenu fileMenu = new JMenu("File"); fileMenu.setMnemonic(KeyEvent.VK_F); JMenuItem fileExitMenuItem = new JMenuItem("Exit", KeyEvent.VK_X); fileExitMenuItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { actionExit(); } }); fileMenu.add(fileExitMenuItem); menuBar.add(fileMenu); setJMenuBar(menuBar); // Setup buttons panel. JPanel buttonPanel = new JPanel(); JButton newButton = new JButton("New Message"); newButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { actionNew (); } }); buttonPanel.add(newButton); // Setup messages table. tableModel = new MessagesTableModel(); table = new JTable(tableModel); table.getSelectionModel().addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent e) { tableSelectionChanged(); } }); // Allow only one row at a time to be selected. table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); // Setup E-mails panel. JPanel emailsPanel = new JPanel(); emailsPanel.setBorder( BorderFactory.createTitledBorder("E-mails")); messageTextArea = new JTextArea(); messageTextArea.setEditable(false); splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, new JScrollPane(table), new JScrollPane(messageTextArea)); emailsPanel.setLayout(new BorderLayout()); emailsPanel.add(splitPane, BorderLayout.CENTER); // Setup buttons panel 2. JPanel buttonPanel2 = new JPanel(); replyButton = new JButton("Reply"); replyButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { actionReply(); } }); replyButton.setEnabled(false); buttonPanel2.add(replyButton); forwardButton = new JButton("Forward"); forwardButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { actionForward(); } }); forwardButton.setEnabled(false); buttonPanel2.add(forwardButton); deleteButton = new JButton("Delete"); deleteButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { actionDelete(); } }); deleteButton.setEnabled(false); buttonPanel2.add(deleteButton); // Add panels to display. getContentPane().setLayout(new BorderLayout()); getContentPane().add(buttonPanel, BorderLayout.NORTH); getContentPane().add(emailsPanel, BorderLayout.CENTER); getContentPane().add(buttonPanel2, BorderLayout.SOUTH); } // Exit this program. private void actionExit() { System.exit(0); } // Create a new message. private void actionNew () { sendMessage(MessageDialog.NEW, null); } // Called when table row selection changes. private void tableSelectionChanged() { /* If not in the middle of deleting a message, set the selected message and display it. */ if (!deleting) { selectedMessage = tableModel.getMessage(table.getSelectedRow()); showSelectedMessage(); updateButtons(); } } // Reply to a message. private void actionReply() { sendMessage(MessageDialog.REPLY, selectedMessage); } // Forward a message. private void actionForward() { sendMessage(MessageDialog.FORWARD, selectedMessage); } // Delete the selected message. private void actionDelete() { deleting = true; try { // Delete message from server. selectedMessage.setFlag(Flags.Flag.DELETED, true); Folder folder = selectedMessage.getFolder(); folder.close(true); folder.open(Folder.READ_WRITE); } catch (Exception e) { showError("Unable to delete message.", false); } // Delete message from table. tableModel.deleteMessage(table.getSelectedRow()); // Update GUI. messageTextArea.setText(""); deleting = false; selectedMessage = null; updateButtons(); } // Send the specified message. private void sendMessage(int type, Message message) { // Display message dialog to get message values. MessageDialog dialog; try { dialog = new MessageDialog(this, type, message); if (!dialog.display()) { // Return if dialog was cancelled. return; } } catch (Exception e) { showError("Unable to send message.", false); return; } try { // Create a new message with values from dialog. Message newMessage = new MimeMessage(session); newMessage.setFrom(new InternetAddress(dialog.getFrom())); newMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(dialog.getTo())); newMessage.setSubject(dialog.getSubject()); newMessage.setSentDate(new Date()); newMessage.setText(dialog.getContent()); // Send new message. Transport.send(newMessage); } catch (Exception e) { showError("Unable to send message.", false); } } // Show the selected message in the content panel. private void showSelectedMessage() { // Show hour glass cursor while message is loaded. setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)); try { messageTextArea.setText( getMessageContent(selectedMessage)); messageTextArea.setCaretPosition(0); } catch (Exception e) { showError("Unabled to load message.", false); } finally { // Return to default cursor. setCursor(Cursor.getDefaultCursor()); } } /* Update each button's state based off of whether or not there is a message currently selected in the table. */ private void updateButtons() { if (selectedMessage != null) { replyButton.setEnabled(true); forwardButton.setEnabled(true); deleteButton.setEnabled(true); } else { replyButton.setEnabled(false); forwardButton.setEnabled(false); deleteButton.setEnabled(false); } } // Show the application window on the screen. public void show() { super.show(); // Update the split panel to be divided 50/50. splitPane.setDividerLocation(.5); } // Connect to e-mail server. public void connect() { // Display connect dialog. ConnectDialog dialog = new ConnectDialog(this); dialog.show();