JPA Hibernate 带@EmbeddedId 的 Clildren 未加载到 Weblogic 服务器上，但已加载到集成测试中

Question

我有 JPA 和 Hibernate 的问题，我有 2 个实体，它们是一对多的关系。 在使用 H2 进行集成测试的本地主机上，一切正常（加载子项），当部署到使用 Oracle 作为 DB 的 weblogic 服务器时，子项未加载。 对此有什么想法吗？ 实体定义是：

@Entity
@Table(name = "TB_MASTER")
@Data
@ToString
@NoArgsConstructor
public class Case implements Serializable {
 private static final long serialVersionUID = 1919288768119684307463L;

 @Id
 @Column(name = "ID", nullable = false, length = 55)
 private String id;
 @Column(name = "CODE_ADR", nullable = false, length = 100)

 @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true, mappedBy = "id.masterId")
 @EqualsAndHashCode.Exclude
 private Set<MasterReference> references = new TreeSet<>();

}

EmbeddedId class：

@Data
@AllArgsConstructor
@EqualsAndHashCode
@NoArgsConstructor
@Embeddable
public class MasterReferenceId implements Serializable, Comparable {
 @ManyToOne(optional = false)
 @JoinColumn(name = "MASTER_ID", nullable = false)
 @ToString.Exclude
 @EqualsAndHashCode.Exclude
 private Master masterId;

 @Column(name = "REF", nullable = false, length = 42)
 private String reference;

 @Column(name = "SHORCUT", nullable = false, length = 100)
 private String shortcut;

 @Column(name = "REF_DATE")
 private Date refDate;

 @Column(name = "REF_BACK", length = 1)
 @Convert(converter = BooleanToNumberConverter.class)
 private Boolean refBack;

 @Column(name = "REF_DATA_ROW", length = 2000)
 private String refDataRow;

 @Override
 public int compareTo(Object o) {
     if (o instanceof MasterReferenceId && ((MasterReferenceId) o).getReference() != null && ((MasterReferenceId) o).getReference() != null) {
        return ((MasterReferenceId) o).getReference().compareTo(this.getReference());
    }
     return 0;
 }
}

子实体：

 @Entity
 @Table(name = "TB_MASTER_REFERENCE")
 @Data
 @ToString
 @NoArgsConstructor
 public class MasterReference implements Serializable, Comparable {

  private static final long serialVersionUID = -517596820344348395356L;

  @EmbeddedId
  private MasterReferenceId id;

  @Column(name = "UPDATE_DATE", nullable = false)
  private Date updateDate;


  @Column(name = "COMMENTS", length = 4000)
  private String comments;

  @Override
  public int compareTo(Object o) {
    if (o instanceof MasterReference && ((MasterReference) o).getId() != null) {
        return ((MasterReference) o).getId().compareTo(this.getId());
    }
    return 0;
  }
 }

Answer 1

试试这个：

public class MasterReference implements Serializable, Comparable {

  @EmbeddedId
  private MasterReferenceId id;

  @ManyToOne(optional = false)
  @JoinColumn(name = "MASTER_ID", nullable = false)
  @MapsId("masterId")
  private Master masterId;

  ..
}

public class MasterReferenceId implements Serializable, Comparable {

  private String masterId;
  ..
}

将引用上的 OneToMany 中的 mappedBy 更改为仅“masterId”，以便它使用引用映射而不是尝试使用 embeddedId。