processFormSubmission not being called - spring

Question

I am new to spring. I am creating a simple login page. But the processFormSubmission() is not being called. But the showForm() is working.
public class LoginController extends SimpleFormController
{
private LoginService loginService;
private String loginView;
public LoginService getLoginService() {
return loginService;
}
public void setLoginService(LoginService loginService) {
this.loginService = loginService;
}
public String getLoginView() {
return loginView;
}
public void setLoginView(String loginView) {
this.loginView = loginView;
}
public LoginController() {
setBindOnNewForm(true);
}
#Override
protected ModelAndView processFormSubmission(HttpServletRequest request,
HttpServletResponse response, Object command, BindException errors)
throws Exception
{
TraceUser tr = (TraceUser) command;
System.out.println(tr);
//loginService.
return super.processFormSubmission(request, response, command, errors);
}
#Override
protected ModelAndView showForm(HttpServletRequest request,
HttpServletResponse response, BindException errors)
throws Exception {
ModelAndView mav = new ModelAndView();
mav.addObject("traceUser", new TraceUser());
mav.setViewName(getLoginView());
return mav;
}
}
And please help me out with how should the ModelAndView object should be processed further.

Answer 1

First of all, the use of the Controller API has been left aside in favor of the new annotation-based controllers (see the #RequestMapping annotation) and classes like SimpleFormController have been deprecated since quite a while now.
However, to answer your question, I assume your form does not declare method="post" and by default, the SFC will consider only POST requests as form submissions (see the isFormSubmission() method in AbstractFormController). Is this the case ?