Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package cz.muni.fi.pa165.bookingmanager.validators; import cz.muni.fi.pa165.bookingmanager.api.dto.UserTO; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import org.springframework.validation.Validator; /** * @author mstana */ public class UserValidator implements Validator { @Override public boolean supports(Class aClass) { return UserTO.class.isAssignableFrom(aClass); } @Override public void validate(Object o, Errors errors) { UserTO user = (UserTO) o; ValidationUtils.rejectIfEmptyOrWhitespace(errors, "firstName", "user.validation.error.firstName"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "lastName", "user.validation.error.lastName"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "email", "user.validation.error.email"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "username", "user.validation.error.username"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "user.validation.error.password"); } }