@Column 省略背上的锅

今天修改实体类时项目启动报错：

org.hibernate.MappingException: Unable to find column with logical name: product_type_id in org.hibernate.mapping.Table(product_type_view) and its related supertables and secondary tables

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添加一对多后启动报错，添加@Column后，正常启动

@Getter
@Setter
@Entity
@Table(name = "product_type_view")
public class ProductTypeView {

  /** 产品类型id {@link ProductType#id} */
  @Id
  @Column(name = "product_type_id")
  private Long productTypeId;

  /** 产品类型名 */
  private String productTypeName;
  /**
   * 父级产品id {@link ProductType#parentId}

   * （若为顶级产品类型，则此项为0{@link ProductType#DEFAULT_TOP_PARENT_ID}）
   */
  @Column(name = "super_type_id")
  private Long superTypeId;

  /** 级联查询数据结构 级联查询成功 */
  @OneToMany(targetEntity = ProductTypeView.class, fetch = FetchType.LAZY)
  @JoinColumn(name = "super_type_id", referencedColumnName = "product_type_id")
  List childProductTypeList = new ArrayList<>();
}

 

（此为jpa的自关联查询，一对多且自身维护外键，不能同时添加@ManyToOne，否则报错无法启动项目）

 

--------------项目试用JPA自关联查询，此外附上--------------------------------------

自关联sql查询语句示例：

SELECT
--     pa.id as id,
--     pa.product_type_name AS pa_type_name,
--     pb.parent_id AS parent_id,
--     pb.id as pb_id,
--     pb.product_type_name as pb_type_name

*
FROM
    `product_type_view` AS pa
    JOIN product_type_view AS pb ON pa.product_type_id=pb.super_type_id