code: public ModelAndView handleRequest(HttpServletRequest request,
  			HttpServletResponse response) throws Exception {
  
  		String requestedPath = (StringUtils.isEmpty(mapping)) ? helper
  				.getPathWithinApplication(request) : helper
  				.getPathWithinServletMapping(request);
  
  		if (StringUtils.isNotEmpty(controllerMapping)) {
  			requestedPath = requestedPath.substring(controllerMapping.length());
  		}
  
  		requestHandler.processRequest(requestedPath, request, response);
  		return null;
  	}
docs: /*
  (non-Javadoc)
  
  @see
  org.springframework.web.servlet.mvc.Controller#handleRequest(javax.servlet
  .http.HttpServletRequest, javax.servlet.http.HttpServletResponse)