@Component
public class DataInitializer implements ApplicationRunner {

    @Autowired
    UserRepository userRepository;

    public void run(ApplicationArguments args) {
        userRepository.deleteAll();
        userRepository.save(new User("user1", Validator.encryptPassword("user1")));
        userRepository.save(new User("user2", Validator.encryptPassword("user2")));
        userRepository.save(new User("user3", Validator.encryptPassword("user3")));

    }
}