This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
I'm using Struts with Flash right now. It's really no different from using Flash with PHP, Java Servlets, Perl, Python, whatever. The Flash movie is delivered to the browser and may begin sending XML-over-HTTP requests back to the server. There's nothing Struts-specific about that.