public Object resolveArgument(
MethodParameter parameter,
ModelAndViewContainer mavContainer,
NativeWebRequest webRequest,
WebDataBinderFactory binderFactory)
throws Exception {
ModelMap model = mavContainer.getModel();
if (model.size() > 0) {
List<String> keys = new ArrayList<String>(model.keySet());
String lastKey = keys.get(model.size() - 1);
if (isBindingResultKey(lastKey)) {
return model.get(lastKey);
}
}
throw new IllegalStateException(
"Errors/BindingResult argument declared "
+ "without preceding model attribute. Check your handler method signature!");
}
