是否可以在 AuditorAwareImpl 类中使用存储库？

Question

我想在数据库中实现对谁以及何时创建/更新实体的引用。 createdAt 和 updatedAt 日期已经生效。

但是我可以看到，当我设置断点时，getCurrentAuditor 方法的返回被调用了大约十次，直到响应到达客户端。并且响应是 CONFLICT HttpStatus-Code 的错误。

我有一个名为 BaseEntity 的类，其中定义了属性。

在下面查看我的课程：

class AuditorAwareImpl implements AuditorAware<Person> {

    @Autowired
    private PersonRepository personRepo;

    @Override
    public Optional<Person> getCurrentAuditor() {
        return Optional.of(personRepo.findByUserPrincipalName(SecurityContextHolder.getContext().getAuthentication().getName() + "@email.com"));
    }
}

@Configuration
@EnableJpaAuditing(auditorAwareRef = "auditorProvider")
class JpaConfig {
    @Bean
    public AuditorAware<Person> auditorProvider() {
        return new AuditorAwareImpl();
    }
}

@Data
@Getter
@Setter
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public abstract class BaseEntity implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", updatable = false, nullable = false)
    protected Long id;

    @CreatedDate
    private Date createdAt;

    @CreatedBy
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(referencedColumnName="id")
    private Person createdBy;

    @LastModifiedDate
    private Date updatedAt;

    @LastModifiedBy
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(referencedColumnName="id")
    private Person updatedBy;

    @PrePersist
    protected void prePersist() {
        if (this.createdAt == null) createdAt = new Date();
        if (this.updatedAt == null) updatedAt = new Date();
    }

    @PreUpdate
    protected void preUpdate() {
        this.updatedAt = new Date();
    }

    @PreRemove
    protected void preRemove() {
        this.updatedAt = new Date();
    }

}

从 Zorglube 编辑 v1（对我不起作用）

class AuditorAwareImpl implements AuditorAware<Person> {

    @Autowired
    private ApplicationContext context;

    @Override
    public Optional<Person> getCurrentAuditor() {
        PersonRepository personRepo = context.getBean(PersonRepository.class);
        return Optional.of(personRepo.findByUserPrincipalName(SecurityContextHolder.getContext().getAuthentication().getName() + "@email.com"));
    }
}

Answer 1

试试这个：

class AuditorAwareImpl implements AuditorAware<Person> {

    @Override
    public Optional<Person> getCurrentAuditor() {
        PersonRepository personRepo = ApplicationContextProvider.getApplicationContext().getBean(PersonRepository.class)
        return Optional.of(personRepo.findByUserPrincipalName(SecurityContextHolder.getContext().getAuthentication().getName() + "@email.com"));
    }
}


@Component(value = "applicationContextProvider")
public class ApplicationContextProvider implements ApplicationContextAware {

    private static class AplicationContextHolder {
        private static final InnerContextResource CONTEXT_PROV = new InnerContextResource();
    }

    private static final class InnerContextResource {

        private ApplicationContext context;

        private void setContext(ApplicationContext context) {
            this.context = context;
        }
    }

    public static ApplicationContext getApplicationContext() {
        return AplicationContextHolder.CONTEXT_PROV.context;
    }

    @Override
    public void setApplicationContext(ApplicationContext ac) {
        AplicationContextHolder.CONTEXT_PROV.setContext(ac);
    }

}