錯誤查找 object Spring JPA：“通過反射訪問持久屬性的字段時出錯”

Question

我有以下課程：

@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;
  }

  ...

}

和，

@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;
  }

  ...

}

我還定義了存儲庫：

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

當我嘗試撥打電話時，

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

它返回錯誤：

org.hibernate.property.access.spi.PropertyAccessException：訪問字段時出錯 [私有 java.lang.String gcs.fds.focusoc.adapter.OrbitAdapter.id] 由持久屬性的反射 [gcs.fds#.focus編號]：02035A"

我嘗試了很多我發現的不同解決方案，但它對我不起作用。 有什么幫助嗎？

Answer 1

我解決了！

使用表名更改 @Table 的類的注釋 @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;
  }

  ...

}

和，

@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;
  }

  ...

}

這樣做會返回錯誤，

java.lang.IllegalArgumentException：參數值 [02035A] 與預期類型不匹配 [gcs.fds.focusoc.adapter.OrbitAdapter (n/a)]

所以我在 Repository 中添加了注解 @Query 以指定必須在數據庫中搜索哪些內容，

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);
}

並解決了！