com.interface21.web.servlet.mvc
Interface Controller

All Known Implementing Classes:

AbstractController, BurlapServiceExporter, DemoController, HessianServiceExporter, MultiActionController

public interface Controller

Simple MVC controller interface. Most similar to a Struts Action.

An implementation of the Controller interface is a reusable, threadsafe object that handles multiple HTTP requests throughout the lifecycle of an application. Controllers are normally JavaBeans, allowing for easy and consistent configuration on application startup.

This is the core interface of the default MVC workflow.

Version:

$Id: Controller.java,v 1.4 2003/06/06 16:15:08 jhoeller Exp $

Author:

Rod Johnson

Method Summary

ModelAndView

handleRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process the request and return a ModelAndView object which the DispatcherServlet will render.

Method Detail

handleRequest

public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest request,
                                  javax.servlet.http.HttpServletResponse response)
                           throws javax.servlet.ServletException,
                                  java.io.IOException

Process the request and return a ModelAndView object which the DispatcherServlet will render. A null return is not an error. It indicates that this object completed request processing itself, thus there is no ModelAndView to render.

Parameters:

request - current HTTP request

response - current HTTP response

Returns:

a ModelAndView to render, or null if handled directly