mailutilities.java

一个用java写的mail.里面的代码值得我们去研究！学习。

/*
** $Id: MailUtilities.java,v 1.5 2001/05/07 12:37:22 kunugi Exp $
**
** Copyright (c) 2000-2001 Jeff Gay
** on behalf of ICEMail.org <http://www.icemail.org>
** Copyright (c) 1998-2000 by Timothy Gerard Endres
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
*/

package org.icemail.mail;

import javax.mail.AuthenticationFailedException;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Store;

import javax.swing.JOptionPane;

import org.icemail.util.ComponentFactory;


/**
 * General mail store and folder utilities.
 */
public class MailUtilities
{
  private
  MailUtilities()
  { }

// used by SendMessageThread.java
// used by StoreTreeNode.java
// used by MailEventThread.java
// used by FolderTreePanel.java
// used by FolderTreeNode.java
  static public void
  setStoreConnected( Store store ) throws MessagingException {
    synchronized ( store ) {
      if ( ! store.isConnected() ) {
        for ( ; ; ) {
          try {
            store.connect();
            MailEventThread.getInstance().addStore( store );
            break;
          } catch ( AuthenticationFailedException ex ) {
            // UNDONE
            // I think what I need to do here is to somehow remove and
            // reinstall this node. This should cause the tree to decide
            // to call loadChildren() again when we are opened again.
            //
            if ( store.isConnected() )
              store.close();

            Object[] xargs = new Object[1];
            xargs[0] = ex.toString();
            int option =
              ComponentFactory.showDialog( ICEMail.getBundle(), "MailUtilities.Authenticate",
                                           0, JOptionPane.ERROR_MESSAGE, xargs );

            if ( option != JOptionPane.YES_OPTION ) {
              throw ex;
            }
          }
        }
      }
    }
  }

// used by FolderTableModel.java
// used by FolderTreePanel.java
// used by MailEventThread.java
// MessagePanel.java
// QuickViewer.java
  static public void
  setFolderOpenAndReady( Folder f, int perm ) throws MessagingException {
    MailUtilities.setStoreConnected( f.getStore() );

    synchronized ( f ) {
      if ( ! f.isOpen() ) {
        System.err.println( "OPEN FOLDER '" + f.getFullName() + "'" );
        f.open( perm );
      }
    }
  }

  /**
   * Save the given message to the given folder.
   */
  static public void
  saveMessage( Message message, String path )
    throws MessagingException {
    int xindex = path.indexOf( "/" );

    if ( xindex > 0 ) {
      String xstoreName = path.substring( 0, xindex );
      String xfolderPath = path.substring( xindex + 1 );

      Store xstore = FolderTreePanel.getInstance().getStore( xstoreName );
      if ( xstore != null ) {
        MailUtilities.setStoreConnected( xstore );

        Folder xfolder = xstore.getFolder( xfolderPath );
        if ( xfolder != null && xfolder.exists() ) {
          MailUtilities.setFolderOpenAndReady( xfolder, Folder.READ_WRITE );

          Message[] xmessages = { message };
          xfolder.appendMessages( xmessages );

          xfolder.close( false );
        } else {
          Object[] xargs = new Object[1];
          xargs[0] = xfolderPath;
          String xstring =
            ICEMail.getBundle().getFormatString( "Exception.missingFolder", xargs );
          throw new MessagingException( xstring );
        }
      } else {
        Object[] xargs = new Object[1];
        xargs[0] = xstoreName;
        String xstring =
          ICEMail.getBundle().getFormatString( "Exception.missingStore", xargs );
        throw new MessagingException( xstring );
      }
    } else {
      Object[] xargs = new Object[1];
      xargs[0] = path;
      String xstring =
        ICEMail.getBundle().getFormatString( "Exception.invalidFolderPath", xargs );
      throw new MessagingException( xstring );
    }
  }

}