[Qualipso-a4] Probando un provider de mbox en Java Mail

[Alvaro del Castillo]

Hola!

Tras leer un poco más sobre Java Mail,
http://java.sun.com/products/javamail/FAQ.html, tiene un API para envío
y recepción de mensajes y, tiene un API a implementar por "proveedores"
de envío y recepción de correo (providers). El provider puede ser POP,
SMTP, IMAP, NNTP ...

En el caso de extracción de la información de los archivos de correos de
una lista de correo, como mailman, nos interesa poder recibir los
mensajes de un provider que trabaje contra un mbox. Por defecto SUN no
proporciona este "provider" por lo que tenemos que utilizar algún otro
producto. Es aquí donde hay que probar como "provider" alguno de los que
se describen en: http://java.sun.com/products/javamail/Third_Party.html

* mstor is a local store provider for JavaMail. Based on the mbox
format, mstor facilitates the storage and retrieval of email messages in
the local filesystem. In addition, mstor supports additional metadata
not inherently supported by the mbox format, and is designed to handle
large mailboxes without a significant degradation in performance.
Available at: http://mstor.sourceforge.net/

* The jmbox project (read jambox) enables developers to use the JavaMail
API to manage mail stored in local repositories like Outlook Express,
Mozilla, Netscape, etc. A JavaMail enabled application needs only to
include the jmbox distribution jar in its classpath to automatically
benefit from local mail management, the same way it would do with POP3
or IMAP remote mail. At the moment jmbox supports navigation and reading
from Outlook Express 5/6 mail (dbx format). Writing into folders and
support for other repositories (mbox) will be added. Available at:
https://jmbox.dev.java.net/.

* PlexMailer offers a set of powerful tools to prevent against
unsolicted emails (SPAM). It supports POP3, IMAP, and MBOX protocols and
can be run as an email client or as a proxy server between a mail server
and another email client. PlexMailer comes with dozens of filters and
hooks to other online resources such as ORBS, MAPS, and DUL to protect
against unsolicited emails and report senders of those emails to
appropriate authorities. It supports Java Web Start for seamless
installation and automatic upgrades for future enhancements and bug
fixes. Available at: http://www.plexobject.com/software/plexmailer/.

* Pooka: An email client using JavaMail and Swing. Supports IMAP
(including disconnected IMAP and IMAP over SSL), POP3, and local mbox
stores. Source is available under the GNU GPL. Available at:
http://www.suberic.net/pooka/. 

* POP3, NNTP and Mbox Providers and JavaMail based EMail client:
http://www.dog.net.uk/knife/

Además tenemos:

http://www.gnu.org/software/classpathx/javamail/javamail.html
Several providers ... The UNIX mbox format


Sería interesante probar la implementación de GNU Javamail, con el
problema para Aperture de ser GPL, y mstor, que tiene una licencia
similar a la BSD.

El uso de estos proveedores es muy sencillo:

------------------------------
Session session = Session.getDefaultInstance(new Properties());
Store store = session.getStore(new URLName("mstor:c:/mailbox/MyStore"));
store.connect();
// read messages from Inbox..
Folder inbox = store.getDefaultFolder().getFolder("Inbox");
inbox.open(Folder.READ_ONLY);
Message[] messages = inbox.getMessages();
-------------------------------

pero habrá que probar  como manejan adjuntos, codificaciones ...


Hasta luego

-- 
Alvaro del Castillo
Project Manager GSyC/LibreSoft 
U. Rey Juan Carlos, C/ Tulipan S/N, 28933 Mostoles, Madrid, Spain
Tel:+34-91-488 85 23 Fax:+34-91-6647494 http://libresoft.es