What's the difference between ModelAndView and ModelMap? [duplicate]

Answer 1

@coder247 Someone correct me if I'm wrong, but you don't need to return a ModelMap. Add your attributes to your ModelMap and simply return a String which is the View name.

This is an excellent article that explains how to do this and more... http://www.mkyong.com/spring-mvc/spring-mvc-form-handling-annotation-example/

Answer 2

ModelAndView, as its name suggests, contains the model, and the name of the view. ModelMap, in contract, only contains information about the model.

Your example would have been written (in "old" Spring) as

 public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
 {
  return new ModelAndView("setup", ORDER, new Order());
 }