Spring Redirect After Post With Flash Scope

redirect-after-post-flash-scope.java

@RequestMapping(value = "/hola", method = RequestMethod.GET)
public String hola(Model model,
	@ModelAttribute("command") Object command,
	BindingResult results,
	RedirectAttributes redirectAttributes ) {

	model.addAttribute("command", command);
	ValidationUtils.invokeValidator(validator, command, results);
	if (results.hasErrors()) {
		redirectAttributes.addFlashAttribute("errors", results.getAllErrors());
		return "redirect:/ganador/error";
	}
	return "hola";
}

@RequestMapping(value =  "/error" )
public String error(Model model,
	@ModelAttribute("command") Object command,
	BindingResult results,
	RedirectAttributes ra) {
	
	for( ObjectError error : ((List<ObjectError>)model.asMap().get("errors"))){
		results.addError(error);
	}
	return "error";
}