This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Though technically in terms of web containers, this is not possible. You could do stuff like persist the session in database, possibly on the other side, do read from the DB, and do your stuff. Just a cheat solution.