logger.info(new StringBuilder("Resolving exception of type : ").append(ex.getClass()));
AjaxResponse ajaxResponse = exceptionHandler.handle(request, ex);
if (ajaxResponse != null) {
AjaxResponseSender.sendResponse(response, ajaxResponse);
ModelAndView mv = new ModelAndView();
mv.clear();
return mv;
}
else {
logger.info("Null Ajax response after resolving exception.");
return null;