Need help writing an interceptor to force a user to change their password

[Russell Neufeld]

Hi all,
  
   I'm trying to implement functionality which will force a user to a 
change-password page if a certain bit is set on their user account.  
That is, no matter what action they are attempting to take, I'd like to 
intercept the request and show them a change-password page.  I've 
written a few struts2 interceptors before, but this one has me stumped.  
I can easily get the user principal object and see whether or not I need 
to insert the change-password page, but I'm not sure what to do next.  I 
was thinking about trying to change the action object to one which would 
simply return a string pointing to the change-password jsp, but I don't 
know how to replace the action object on the invocation object (and that 
doesn't seem like a good idea).  I'd prefer not to solve this with a 
redirect because I'd like to use some of the context of current request 
in the rendering of the change-password page.

   Any ideas?  Thanks,

       Russ