Question

我有以下课程：

@Entity(name = "focusoc_orbit")
@Data
public class OrbitAdapter extends Adapter{

  @Id
  private String              id;

  ...

  public String getId() {
    return id;
  }

  public void setId(String id) {
    this.id = id;
  }

  ...

}

然后

@Entity(name = "focusoc_conjunction")
@Data
public class ConjunctionAdapter extends Adapter {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Long         id;

  @ManyToOne
  @JoinColumn(name = "target_id")
  private OrbitAdapter target;

  @ManyToOne
  @JoinColumn(name = "chaser_id")
  private OrbitAdapter chaser;

  ...
  public OrbitAdapter getTarget(){
    return target;
  }
  public void setTarget(OrbitAdapter target){
    this.target = target;
  }
  public String getChaserId(){
    return chaserId;
  }
  public void setChaser(OrbitAdapter chaser){
    this.chaser = chaser;
  }

  ...

}

我还定义了存储库：

public interface ConjunctionRepository extends PagingAndSortingRepository<ConjunctionAdapter, Long> {
  public ConjunctionAdapter findByTargetAndChaserAndTimeOfCloseApproach(String target, String chaser, Date timeOfCloseApproach);
}

当我尝试拨打电话时，

ConjunctionAdapter c = conjunctionRepository.findByTargetAndChaserAndTimeOfCloseApproach(targetId, chaserId, timeOfCloseApproach());

它返回错误：

org.hibernate.property.access.spi.PropertyAccessException：错误访问字段[私有java.lang.String gcs.fds.focusoc.adapter.OrbitAdapter.id]通过反射进行持久化属性[gcs.fds.focusoc.adapter.OrbitAdapter＃id]：02035A“

我尝试了很多发现的不同解决方案，但对我而言不起作用。有帮助吗？

Answer 1

我解决了！

使用表名称更改@Table类的注释@Data。所以，

@Entity
@Table(name = "focusoc_orbit")
public class OrbitAdapter extends Adapter{

  @Id
  private String              id;

  ...

  public String getId() {
    return id;
  }

  public void setId(String id) {
    this.id = id;
  }

  ...

}

然后

@Entity
@Table(name = "focusoc_conjunction")
public class ConjunctionAdapter extends Adapter {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Long         id;

  @ManyToOne
  @JoinColumn(name = "target_id")
  private OrbitAdapter target;

  @ManyToOne
  @JoinColumn(name = "chaser_id")
  private OrbitAdapter chaser;

  ...
  public OrbitAdapter getTarget(){
    return target;
  }
  public void setTarget(OrbitAdapter target){
    this.target = target;
  }
  public String getChaserId(){
    return chaserId;
  }
  public void setChaser(OrbitAdapter chaser){
    this.chaser = chaser;
  }

  ...

}

执行此操作会返回错误

java.lang.IllegalArgumentException：参数值[02035A]没有匹配预期的类型[gcs.fds.focusoc.adapter.OrbitAdapter（n / a）]

因此我将注释@Query添加到存储库中，以指定必须在数据库中搜索哪些内容，

public interface ConjunctionRepository extends PagingAndSortingRepository<ConjunctionAdapter, Long> {

  @Query("SELECT c FROM ConjunctionAdapter c WHERE c.target.id = :target AND c.chaser.id = :chaser AND c.timeOfCloseApproach = :timeOfCloseApproach")
  public ConjunctionAdapter findByTargetAndChaserAndTimeOfCloseApproach(String target, String chaser, Date timeOfCloseApproach);
}

解决了！

错误查找对象Spring JPA：“通过反射访问持久性属性时出错”

1 个答案: