具有自定义查询和复合主键的 JpaRepository：错误未知列

Question

我有一个带有复合主键的 SQL 服务器实体。

这就是实体：

@Entity
@Table(name = "plz", schema = "dbo")
@IdClass(plzId.class)
public class Plz {

  @Id
  @Column(name = "plz", columnDefinition = "NCHAR(5)")
  private String plz;

  @Id
  @Column(name = "ort", columnDefinition = "NCHAR(30)")
  private String ort;

  @Column(name = "gueltigbis")
  private Date gueltigBis;

  @Column(name = "gueltigvon")
  private Date gueltigVon;

  @Id
  @Column(name = "value", columnDefinition = "NCHAR(5)")
  private String value;
}

这是 ID Class:

@Data
@EqualsAndHashCode
public class plzId implements Serializable {

  private String plz;
  private String ort;
  private String value;
}

那就是JpaRepository

public interface PlzRepository extends JpaRepository<Plz, PlzId> {

  @Query(value = "SELECT value, ort FROM dbo.plz WHERE plz = :plz AND gueltigvon <= :bezugsdatum AND gueltigbis >= :bezugsdatum",
    nativeQuery = true
  )
  List<Plz> findByPlzDatum(@Param("plz") String plz, @Param("bezugsdatum") Date bezugsdatum);
}

但是当执行这个查询时我得到一个错误：列名无效：plz

Answer 1

终于找到解决方案了:-) select 没有返回完整的键/对象。对象验证失败，不存在合适的构造函数。

具有自定义查询和复合主键的 JpaRepository：错误未知列

JpaRepository with custom Query and Composite Primary Key: error unknown column

java

hibernate

spring-data-jpa

spring-boot