Hibernate Validator integration for struts2.
A fork of full-hibernate-plugin-for-struts2 .
Alternative Tutorial Here
DRY - Don't Repeat Yourself!
This feature allow the use of the fantastic Hibernate Validator Framework with very simple use of annotations in your Actions. This plugin is compatible with Hibernate Validator 3.1.0 and 4.0.2 (since 2.2 version).
WikiMore about Hibernate Validator .