springboot對象為null的屬性在json中不顯示的解決

更新時(shí)間：2023年09月29日 08:30:34 作者：普通還不自信的程序員

這篇文章主要介紹了springboot對象為null的屬性在json中不顯示的解決方案,具有很好的參考價(jià)值,希望對大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教

springboot對象為null的屬性在json中不顯示

springboot框架中在controller層使用@RestController注解，會(huì)將對象自動(dòng)轉(zhuǎn)換為json格式發(fā)送到前端。

對象中會(huì)存在值為null的屬性。

如果不想在json數(shù)據(jù)中顯示值為null的鍵值對，

在配置文件中寫入下面的代碼

spring:
  jackson:
    default-property-inclusion: non-null

或者在實(shí)體類中通過注解@JsonInclude(Include.NON_NULL)

挨個(gè)配置

public class Item {
	private int itemId;
	private String itemName; // 項(xiàng)目uuid
	@JsonInclude(Include.NON_NULL)
	private Area ar; // 區(qū)域
	@JsonInclude(Include.NON_NULL)
	private List<Area> area; // 區(qū)域集合
}

配置前

{
    "status": true,
    "message": "數(shù)據(jù)",
    "data": [
        {
            "itemId": 1,
            "itemName": "4a6494f1-d0f4-476a-9809-d3b09dcfc379",
            "ar": null,
            "area": [
                {
                    "areaId": 1,
                    "areaName": "鋅鍋至出口",
                    "loca": null,
                    "location": [
                        {
                            "locationId": 1,
                            "locationName": "鋅鍋氣刀",
                            "spot": {
                                "picCheck1": "pic1-1",
                                "picCheck2": "pic1-2",
                                "record": "氣刀刀架鋅渣、鋅粉積聚",
                                "responsible": "生產(chǎn)清掃",
                                "examiner": "朱煒毛飛俊潘宏清",
                                "checkTime": "2020-12-25 14:41:59"
                            }
                        }
                    ]
                }
            ]
        }
    ]
}

配置后

{
    "status": true,
    "message": "數(shù)據(jù)",
    "data": [
        {
            "itemId": 1,
            "itemName": "4a6494f1-d0f4-476a-9809-d3b09dcfc379",
            "area": [
                {
                    "areaId": 1,
                    "areaName": "鋅鍋至出口",
                    "location": [
                        {
                            "locationId": 1,
                            "locationName": "鋅鍋氣刀",
                            "spot": {
                                "picCheck1": "pic1-1",
                                "picCheck2": "pic1-2",
                                "record": "氣刀刀架鋅渣、鋅粉積聚",
                                "responsible": "生產(chǎn)清掃",
                                "examiner": "朱煒毛飛俊潘宏清",
                                "checkTime": "2020-12-25 14:41:59"
                            }
                        }
                    ]
                }
            ]
        }
    ]
}