public void validateStep3(Object command, Errors errors) {
FullUser fullUser = (FullUser) command;
if (fullUser.getFavorites() == null || fullUser.getFavorites().size() == 0) {
errors.rejectValue("favorites", "required.favorites", "至少需要选择一个爱好");
}
}
public void validateStep1(Object command, Errors errors) {
FullUser fullUser = (FullUser) command;
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "userName", "required.username", "用户名必须填写");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "required.password", "密码不能为空");
validateEmail(fullUser.getEmail(), errors);
}