Using struts how to check  user has logged in  and..

In a struts form I want to check whether to user has already logged in. If
not, instead of showing the form I want to forward the user to a login
dialog and he must log in. After the user logged in, I want him to come back to
the form and I have to restore the original parameters of the form.
What is the best solution?

Use Servlet Filter on controller servlet.

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    Searchable thread archive <URL:http://pinehurst.sageit.com/listarchive/>

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