Types of Controller?

Controllers are components that are being called by the Dispatcher Servlet for doing any kind of Business Logic. Spring Distribution already comes with a variety of Controller Components each doing a specific purpose. All Controller Components in Spring implement the org.springframework.web.servlet.mvc.Controller interface.
SimpleFormController, AbstractController, AbstractCommandController, CancellableFormController, AbstractCommandController, MultiActionController, 
ParameterizableViewController, ServletForwardingController, ServletWrappingController, 
UrlFilenameViewController.