Spring Abstract Command Controller?

To process request parameters in the controller, then instead of using servlet classes to get request parametersin Abstract controller based controller, you can use AbstractCommandController which has the ability to auto populate request parameters to the data object which is also termed as command object in spring. This controller also offers feature to validate the request parameters. You set the name of the command class using setCommandClass() method in the constructor of the controller. This populated command object is passed to the method handle() which is called by the DispatcherServlet automatically.