If you need to send text message to Jabber, this connector is done for you.
You need to add next jar files in order to execute this connector:
smack.jar
smackx.jar
from http://www.igniterealtime.org/downloads/download-landing.jsp?file=smack/smack_3_1_0.zip
This connector is in category “Messaging”
Repository URL : http://community.bonitasoft.com/project/xmpp-connector