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.
There should not be an issue to use SOA. But why would like to use Spring framework when JEE already has CDI?
Just to be on the safer side use the standard Java/JEE(5/6) components rather than similar open source frameworks otherwise be ready to provide very good justification why you are using Open source components.