OneToMany映射仅返回映射字段的ID

Question

我想询问一个人，并得到以下回应:

{
    "id": 186506,
    "first_name": "JANE",
    "last_name": "DOE",
    "pidm": 324950
}

但在需要时，我还想包含phone字段，并获得如下内容：

{
    "id": 186506,
    "phones": [
        {
            "id": 329815,
            "phone_number": "1234567890"
        },
        {
            "id": 329816,
            "phone_number": "0987654321"
        }
    ],
    "first_name": "JANE",
    "last_name": "DOE",
    "pidm": 324950
}

但是，我得到的只是手机ID，就像这样：

{
    "id": 186506,
    "phones": [
        {
            "id": 329815
        },
        {
            "id": 329816
        }
    ],
    "first_name": "JANE",
    "last_name": "DOE",
    "pidm": 324950
}

这是两个有问题的领域：

@Entity
@Table(name="PERSON")
class Person implements Serializable {

    @Id
    @Column(name="person_id")
    Long id

    @Column(name="person_pidm")
    Long pidm

    @Column(name="person_first_name")
    String first_name

    @Column(name="person_last_name")
    String last_name

    @OneToMany(mappedBy="pidm")
    private List<SprteleDetail> phones

    List<SprteleDetail> getPhones() {
        return phones
    }
}

java prettyprint-override">@Entity
@Table(name="TELEPHONE")
class Telephone implements Serializable {

    @Id
    @Column(name="telephone_id")
    Long id

    @Column(name="telephone_phone_number")
    String phone_number

    @ManyToOne
    @JoinColumn(name="telephone_pidm", referencedColumnName="person_pidm")
    private Person pidm;

}

Answer 1

试试这个

@ManyToOne
@JoinColumn(name="telephone_pidm", referencedColumnName="person_pidm")
@JsonBackReference //try this
private Person pidm;

Answer 2

在json like中您想要的字段上添加< code>@JsonBackReference

 @ManyToOne
 @JsonBackReference
 @JoinColumn(name="telephone_pidm", referencedColumnName="person_pidm")
 private Person pidm;

Answer 3

@ManyToOne
@JoinColumn(name="telephone_pidm", referencedColumnName="person_pidm")
@JsonIgnore //try this
private Person pidm;