This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
No because Struts is a Web Framework that the Controller is a Front Controller Servlet. You can have Actions call EJBs if you want, but be careful and use the common design patterns for this like ServiceLocator, and Business Delegate.