Jeff, saveToken() - puts a value into the session object keyed under the constant TRANSACTION_TOKEN_KEY.
resetToken() - is used to remove the keyed value from the session Any time a struts form is used the tranaction token is embedded as a hidden field in the form. isTokenValid() only returns true if the token in the request matches the token in the session. Hope this helps. -Steve "Knee, Jeff" <[EMAIL PROTECTED]> wrote: >Matt, > >The example is a bit oblique to me and the Action classes JavaDoc doesn't >elaborate very well... > >FWIW, I only see it used in EditRegistrationAction & SaveRegistrationAction >with very little commenting. Is there a different example I shoud or >location I should be looking at? > >However the code comment does say: >// Set a transactional control token to prevent double posting > >Which is one of the things to look at in my evaluation because this was an >issue I've had to deal with in all of the Servlet/JSP solutions I've done... > >Here is my guess as to what it does: > >Use saveToken() to stash away a hashcode (in the sesssion) of the current >request. > >Use isTokenValid() to see if the saved hashcode matches the current >request's hashcode... if so, this is a duplicate post so then the code >should somehow produce the same response as last time? (I forget the math >term... but basically have f(x) = f(f(x)).) > >Use resetToken() to remove the hashcode (from the session). (If so, why >does it have a request parameter?) > >Are my assumptions correct? > >+= Jeff Knee > >> -----Original Message----- >> From: Matt Raible [mailto:[EMAIL PROTECTED]] >> Sent: Saturday, December 01, 2001 2:01 AM >> To: Struts Users Mailing List >> Subject: Re: Tokens >> >> >> see the example app - they're used to track if the form has >> already been >> submitted and such (back button and reload button issues). >> >> --- Stanley Struts <[EMAIL PROTECTED]> wrote: >> > Hi, what are tokens? Do any of you have a link of a >> > page that discusses what are tokens and what is there >> > use? Thanks! :) >> > >> > __________________________________________________ >> > Do You Yahoo!? >> > Buy the perfect holiday gifts at Yahoo! Shopping. >> > http://shopping.yahoo.com >> > >> > -- >> > To unsubscribe, e-mail: >> <mailto:[EMAIL PROTECTED]> >> > For additional commands, e-mail: >> <mailto:[EMAIL PROTECTED]> >> > >> >> >> __________________________________________________ >> Do You Yahoo!? >> Buy the perfect holiday gifts at Yahoo! Shopping. >> http://shopping.yahoo.com >> >> -- >> To unsubscribe, e-mail: >> <mailto:[EMAIL PROTECTED]> >> For additional commands, e-mail: >> <mailto:[EMAIL PROTECTED]> >> > >-- >To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > > -- __________________________________________________________________ Your favorite stores, helpful shopping tools and great gift ideas. Experience the convenience of buying online with Shop@Netscape! http://shopnow.netscape.com/ Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/ -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
