n002213f n002213f - 26 days ago 10x
Java Question

JBoss JAAS custom Login Module Error messages

I have an application that makes used of a custom login module of JBoss. Authentication can fail for a wide variety of reasons and i have to display these to the user instead of the usual

Inavlid username / password

Is there a way to get error message from the login message? I think the best would be to through an exception since authenticate returns a boolean, however i can't figure how to catch it after authentication. Any pointers welcomes.


Used valve org.jboss.web.tomcat.security.ExtendedFormAuthenticator and grabbed j_exception from the session.


  1. http://books.zkoss.org/wiki/Small_Talks/2009/August/Form_Based_Login_with_JAAS_on_JBoss_and_ZK
  2. http://community.jboss.org/wiki/ExtendedFormAuthenticator