Vaadin - Using Acegi, Spring Security good Tutorial?


I’m just getting started with Vaadin and authentification/security is an important issue that I need to take into account.

At the moment I can’t just go on and use a simple custom built authentification as I need to keep doors open to different types of authentification requirements (custom built, directories, etc.)

I tought that Spring Security would be a good thing to build on top.

However, I couldn’t find any good end-to-end tutorials or best practice articles.

Any suggestions?