在春季的Java中,特别是在JoinColumn中,如果我们使用JoinColumn例如JoinColumn(name =“ guest_id”)。然后将显示所有访客数据。而我只想检索一个数据,这只是名称。
@Column(name = "guest_id")
private Integer guestId;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "guest_id", insertable = false, updatable = false)
private String guestName;
当邮递员提出要求时,结果将是这样
"guestCard": {
"id": 53,
"idPic": null,
"guestType": null,
"title": "mr",
"name": "RIKO JANUAR",
"phoneNumber": "08100000",
"email": "[email protected]",
"gender": "male",
"bDay": "2019-10-29",
"nationality": "AF",
"idCard": "21321131231",
"validity": "2019-10-29",
"telpFax": null,
"address": "bandung",
"job": "Musician"
}
我想要的是仅显示一个名称。像这样
"guestCard": {
"name": "RIKO JANUAR"
}
我这样尝试过,但是没有用
@Column(name = "guest_id")
private Integer guestId;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "name.guest_id", insertable = false, updatable = false) //this is not work
private String guestName;
最佳答案
忽略要通过关系类上的@JsonIgnoreProperties jackson-annotations隐藏的所有字段。
其他解决方案,创建各种模型类并转移字段。