org.hibernate.MappingException:无法确定类型:在 table:对于列:[org.hibernate.mapping.Column(植物)

org.hibernate.MappingException: Could not determine type for: at table: for columns: [org.hibernate.mapping.Column(plant)

我知道有人问过这个问题 several times 但是,他们没有帮助我。 我有以下测试:

public class PlantCatalogTests {
    @Autowired
    PlantInventoryEntryRepository plantRepo;

    @Test
    public void queryPlantCatalog() {
        assertThat(plantRepo.count(), is(14l)); 
    }

这里是 PlantInventoryEntryRepository

@Repository
public interface PlantInventoryEntryRepository  extends JpaRepository<PlantInventoryEntry, Long> {}

如您所见,此存储库基于 class PlantInventoryEntry

@Entity
@Data
public class PlantInventoryEntry {

      @Id
      @GeneratedValue
      Long id;

      @OneToOne
      PurchaseOrder plant_id;

      String name;
      String description;

      String price;   
}

PurchaseOrder 是另一个 class,我在 PlantInventoryEntry class:

中有一个它的实例作为属性
@Entity
@Data
public class PurchaseOrder {
      @Id
      @GeneratedValue
      Long id;

      List<PlantReservation> reservations;
      PlantInventoryEntry plant;

      LocalDate issueDate;
      LocalDate paymentSchedule;
      @Column(precision=8,scale=2)
      BigDecimal total;

      @Enumerated(EnumType.STRING)
      POStatus status;
      LocalDate startDate;
      LocalDate endDate;
    }

我的主要问题是,当我 运行 我的测试时,我遇到了这个错误:

org.hibernate.MappingException: Could not determine type for: com.example.models.PlantInventoryEntry, at table: purchase_order, for columns: [org.hibernate.mapping.Column(plant)

我该如何修复错误?

您需要在 PlantInventoryEntry[=25] 上使用 @ManyToOne@OneToOne 注释来识别关系=] 在 PurchaseOrder 中,取决于实体之间的实际关系。

编辑: 您很可能需要确定 PlantReservation 列表与 PurchaseOrder[= 之间的关系25=],或者如果它不是由 JPA 管理的,则需要将其标记为 @Transient

@Entity
@Data
public class PurchaseOrder {
      @Id
      @GeneratedValue
      Long id;

      //  You need to set the mappedBy attribute to the field name
      //  of PurchaseOrder in PlantReservation
      //  Update: omit mappedBy if PurchaseOrder is not mapped in PlantReservation
      @OneToMany(mappedBy="order")
      List<PlantReservation> reservations;

      @ManyToOne
      PlantInventoryEntry plant;

      LocalDate issueDate;
      LocalDate paymentSchedule;
      @Column(precision=8,scale=2)
      BigDecimal total;

      @Enumerated(EnumType.STRING)
      POStatus status;
      LocalDate startDate;
      LocalDate endDate;
    }