Spring Boot JPA@CreatedDate @LastModifiedDate not

问题:

I am writing an app with Spring Boot + JPA, using a Postgres database. I have a User Entity and I am trying to get a timestamp when the user record is saved and/or modified. This is not working. The record that is being saved has "null" for both createdDate and lastModifiedDate.

Here is all the relevant code in Kotlin:

@Entity
@Table(name = "app_user")
@EntityListeners(AuditingEntityListener::class)
data class User(
        @Id
        @GeneratedValue(strategy = GenerationType.AUTO)
        @Column(name = "id")
        val id: UUID? = null,

        @NotNull
        @Column(unique = true)
        val email: String,
        val name: String,
        private val password: String,

        @CreatedDate
        @Column(name = "created_date", nullable = false, updatable = false)
        var createdDate: LocalDateTime? = null,

        @LastModifiedDate
        @Column(name = "last_modified_date", nullable = false)
        var lastModifiedDate: LocalDateTime? = null
)

My SQL queries to add the date fields look like this:

ALTER TABLE app_user
ADD COLUMN last_modified_date TIMESTAMP,
ADD COLUMN created_date TIMESTAMP;

I also have a configuration class

@Configuration
@EnableJpaAuditing(auditorAwareRef = "auditorProvider")
class JpaAuditingConfiguration {

    @Bean
    fun auditorProvider(): AuditorAware<String> {
        return AuditorAware { Optional.of(SecurityContextHolder.getContext().authentication.name) }
    }

}

And my test class:

  @Autowired
    private lateinit var userRepository: UserRepository

    val user = User(
            email = "email",
            name = "name",
            password = "password"
    )

    @Test
    fun `it sets the timestamps when a user is created`() {
        userRepository.save(user)
        user.let {
            assertThat(it.createdDate).isNotNull()
            assertThat(it.lastModifiedDate).isNotNull()
        }
    }

UPDATE:

It seems the problem only happens in tests. It seems to be fine when i execute the same code to create a user in the development environment and not in tests.

Do i need some additional config in the tests?

UPDATE 2

I also tried to use the entity manager like this:

@Autowired
lateinit var entityManager: TestEntityManager

Then in the test do:

entityManager.persist(user)
entityManager.flush()

And also

entityManager.persistAndFlush(user)

Still is not populating the timestamps.

回答1:

The AuditingEntityListener methods are called in the @PrePersist and @PreUpdate phase.

This means they are called just before the insert or update SQL statements are executed.

Read more about JPA events in the Hibernate doc: https://docs.jboss.org/hibernate/orm/5.2/userguide/html_single/Hibernate_User_Guide.html#events-jpa-callbacks

Unit Tests

When using in Tests you have to enable auditing as well on the test

@DataJpaTest
@RunWith(SpringRunner.class)
@EnableJpaAuditing
public class EntityListenerTest {

回答2:

My prefered solution is a set of multiple annotations to ensure test of @CreatedBy or @CreatedDate:

@RunWith(SpringRunner.class)
@DataJpaTest
@Import(JPAConfig.class)
@WithMockUser(username = "testuser")
public class MYRepositoryTest {
...
}

My Entities looks like:

@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public class AbstractEntity {

    @CreatedBy
    private String createdBy;

    @CreatedDate
    private Date createdOn;

    @LastModifiedDate
    private Date updatedOn;

    @LastModifiedBy
    private String updatedBy;
}

My JPA configuration is:

@Configuration
@EnableJpaAuditing(auditorAwareRef = "auditorAware")
public class JPAConfig {

    @Bean
    public AuditorAware<String> auditorAware() {
        return () -> Optional.of(((User)     SecurityContextHolder.getContext().getAuthentication().getPrincipal()).getUsername());
    }
}

Now your audit fields also created during JPA test:

assertThat(result.getCreatedBy()).isNotNull().isEqualTo("testuser");
assertThat(result.getCreatedOn()).isNotNull();
assertThat(result.getUpdatedBy()).isNotNull().isEqualTo("testuser");
assertThat(result.getUpdatedOn()).isNotNull();

回答3:

I had similar issue (Spring Boot 2.2.1 and JUnit5) with null values. Adding @EnableJpaAuditing to test class did not work.

My example (did not copy everything):

@Getter(AccessLevel.PROTECTED)
@Setter(AccessLevel.PROTECTED)
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public class Auditable<U> {

    @CreatedBy
    @Column(name = "created_by", nullable = false)
    private U createdBy;

    @CreatedDate
    @Column(name = "created", nullable = false)
    private OffsetDateTime created;
}

and respective class:

@Getter
@Setter
@Entity
@Table(name="survey_records")
public class SurveyRecord extends Auditable<String> implements Serializable {

I had following configuration for auditing:

@Configuration
@EnableJpaAuditing(auditorAwareRef = "auditorProvider", dateTimeProviderRef = "auditingDateTimeProvider")
public class JpaAuditingConfiguration {

    @Bean(name = "auditingDateTimeProvider")
    public DateTimeProvider dateTimeProvider() {
        return () -> Optional.of(OffsetDateTime.now());
    }

    @Bean
    public AuditorAware<String> auditorProvider() {

To get @CreatedBy and @CreatedDate working inside test only @Import was needed

@DataJpaTest
@Import(JpaAuditingConfiguration.class)
class SurveyRecordRepositoryTest {

Used references:

• https://springbootdev.com/2018/03/13/spring-data-jpa-auditing-with-createdby-createddate-lastmodifiedby-and-lastmodifieddate/

• https://github.com/spring-projects/spring-boot/issues/10743#issuecomment-416777423