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.
The Spring Validator interface is not tied down to Spring MVC, so You can definitely use it in a standalone application. The only difference would be that you will need to get a reference to the Validator and invoke the validate method yourself.
Perhaps something like -
If you do a search in Spring forums or documentation, you should be able to find some examples.