我的应用程序分为几个模块，我想创建一个新的“确认注册令牌”模块，它独立于“用户”模块的Angular 。您可以猜到，该模块负责通过电子邮件验证令牌启用用户帐户。因此，我创建了一个与用户有一对一关系的实体：

@Entity
public class ConfirmRegistrationToken {
    @Id
    private Long id;
    @MapsId
    @OneToOne(optional = false, fetch = FetchType.LAZY)
    private User user;
    private String token;
    private LocalDateTime expiresAt;
    // setters, getters, etc.

我正在侦听在userservice中发布的onuserregisterevent:

@Transactional
    public UserModel register(UserRegisterModel model) {
        validatorsExecutor.validate(
            new UserRegisterValidator(model, userRepository)
        );
        User user = userRegisterMapper.toObject(model);
        user = userRepository.save(user);
        eventPublisher.publishEvent(new OnUserRegisterEvent(user));
        return userMapper.toModel(user);
    }

然后，在用@transactionaleventlistener注解的侦听器中激发createtoken：

@Component
public class OnUserRegisterListener {
    private final ConfirmRegistrationTokenGenerator tokenGenerator;
    @Autowired
    public OnUserRegisterListener(ConfirmRegistrationTokenGenerator tokenGenerator) {
        this.tokenGenerator = tokenGenerator;
    }
    @TransactionalEventListener
    public void onApplicationEvent(OnUserRegisterEvent event) {
        tokenGenerator.createToken(event.getUser());
    }
}

createtoken方法被注解为@transactional（propagation=propagation.requires\u new），因为我想在新的独立事务中激发此方法：

@Transactional(propagation = Propagation.REQUIRES_NEW)
    public void createToken(User user) {
        ConfirmRegistrationToken token = new ConfirmRegistrationToken();
        token.setUser(user);
        String generatedToken = UUID.randomUUID().toString();
        token.setToken(generatedToken);
        Integer expirationHours = environment.getProperty("user.confirm-registration.expiration-hours", Integer.class, 24);
        token.setExpiresAt(LocalDateTime.now().plus(Duration.ofHours(expirationHours)));
        confirmRegistrationTokenRepository.save(token);
        //TODO implement sending message here
        System.out.println("To confirm your registration, just click here: http://localhost:8080/user/" + user.getId() + "/confirmRegistration/" + generatedToken);
    }

但不幸的是，将令牌保存到数据库不起作用，查询甚至没有发送到数据库：

Hibernate: select user0_.id as id1_3_, user0_.email as email2_3_, user0_.enabled as enabled3_3_, user0_.encoded_password as encoded_4_3_, user0_.name as name5_3_ from users user0_ where user0_.email=?
Hibernate: select user0_.id as id1_3_, user0_.email as email2_3_, user0_.enabled as enabled3_3_, user0_.encoded_password as encoded_4_3_, user0_.name as name5_3_ from users user0_ where user0_.name=?
Hibernate: insert into users (email, enabled, encoded_password, name) values (?, ?, ?, ?)

我已经测试过用@transactional和默认值在其他方法中保存这个令牌，它是有效的，但这里没有，我很困惑，因为这里没有任何异常。我做错什么了吗？