Tomcat: how to get username

["Joseph Talafous" <jtalafous@lycos.com>]

I'm using the usual FORM based login configuration with my Tomcat Webapp, and it works fine.  I can even logout by using a link to logout.jsp which contains:

USER logged out of MY WEB APP at <%= new java.util.Date()%> 
<% request.getSession(invalidate();%>

This works OK, except I would like to replace USER with the username that was entered in the FORM based (j_username) input by Tomcat.  How do I get at the username?  session.getAttribute() and servletContext.getAttribute() do not appear to have such attributes as "username" set by Tomcat when the username is entered.  

I'm punting, but if anyone knows a simple solution to this, please let me know.  I don't see a solution (after an afternoon of researching the net) and this might be a good feature for a future Tomcat release. 

Cheers,
Joe

FYI: In web.xml:

<!-- Define a security constraint on this application -->
<security-constraint>
  <web-resource-collection>
    <web-resource-name>Entire Application</web-resource-name>
    <url-pattern>/*</url-pattern>
  </web-resource-collection>
  <auth-constraint>
    <!-- This role is not in the default user directory -->
    <role-name>manager</role-name>
  </auth-constraint>
</security-constraint> 			
<!-- Define the login configuration for this application -->
<login-config>
  <auth-method>FORM</auth-method>
  <realm-name>MY WEB APP</realm-name>
</login-config>
<!-- Security roles referenced by this web application -->
<security-role>
  <description>
    The role that is required to log in to the Manager Application
  </description>
  <role-name>manager</role-name>
</security-role>
 



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