java - Spring Boot JPA 保留具有空列的父级的子级

Question

我有一个奇怪的问题。我有实体公司、分支机构和地址。公司有分支机构列表，每个分支机构都有地址。我试图保留地址实体之前不存在的分支，但地址保留为空列。

@Data
@Entity
@Indexed
@Table(name = "company")
public class Company {

    @Id
    @GeneratedValue(generator = "UUID")
    @GenericGenerator(
            name = "UUID",
            strategy = "org.hibernate.id.UUIDGenerator"
    )
    private String id;

    @Field
    @Column(name = "full_name", nullable = false, unique = true)
    private String fullName;

    @OneToMany(mappedBy = "company")
    private Set<Branch> branches;

}

@Data
@Entity
@Table(name = "branch")
public class Branch {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;

    @Column
    private String phone;

    @Column
    private String email;

    @OneToOne(cascade = CascadeType.PERSIST)
    @JoinColumn(name = "address_id", referencedColumnName = "id")
    private Address address;

    @ManyToOne
    @JoinColumn(name = "company_id", referencedColumnName = "id")
    private Company company;
}

@Entity
@Table(name = "address")
public class Address {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;

    @Column
    private String street;


    @OneToOne(mappedBy = "address")
    private Company company;

    @OneToOne(mappedBy = "address")
    private Branch branch;
}

服务...

    public Integer addBranch(BranchDto branchDto) {
        Branch branch = modelMapper.map(branchDto, Branch.class);

        Company company = companyRepository.getCompanyById(branchDto.getCompanyId());
        branch.setCompany(company);

        return branchRepository.save(branch).getId();
    }

D 到...

@Data
@JsonInclude(JsonInclude.Include.NON_NULL)
public class BranchDto {

    private Integer id;

    private String phone;

    private String email;

    private AddressDto address;

    private String companyId;
}

这就是效果...

调试器...

有什么问题吗？你能帮我吗？

Answer 1

您正在使用具有相同 ID 的“mappedBy”，它仅适用于他找到的第一个。

尝试更换其他id。