使用 Jolt 从 JSON 输出中删除空值
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【中文标题】使用 Jolt 从 JSON 输出中删除空值【英文标题】：Remove null values from JSON output using Jolt 【发布时间】：2022-01-19 18:35:36 【问题描述】：您能否建议我一种从 json 输出中删除 null 值的方法，如下所述：
输入
"userId": "1",
"age": "20",
"desc1": "value desc1",
"desc2": "value desc2",
"desc3": "value desc3",
"desc4": "value desc4",
"desc5": "value desc5",
"desc6": "value desc6",
"desc7": "value desc7"
规格
[
"operation": "shift",
"spec":
"desc4": "test4",
"desc5": "test5",
"desc6": "test6",
"desc1|desc2|desc3":
"$": "additionalInformationList[#2].typeCode",
"@": "additionalInformationList[#2].value"
]
输出
"test4": "value desc4",
"test5": "value desc5",
"test6": "value desc6",
"additionalInformationList": [null,null,null,
"typeCode": "desc1",
"value": "value desc1"
,
"typeCode": "desc2",
"value": "value desc2"
,
"typeCode": "desc3",
"value": "value desc3"
]
有什么建议如何删除空值吗？
【问题讨论】：
【参考方案1】：确实够用了
[
"operation": "shift",
"spec":
"desc*": "&",
"desc1|desc2|desc3":
"$": "additionalInformationList[#2].typeCode",
"@": "additionalInformationList[#2].value"
,
"operation": "remove",
"spec":
"desc7": ""
]
如果您不使用 test 重命名 desc 属性以获取
"additionalInformationList" : [
"typeCode" : "desc1",
"value" : "value desc1"
,
"typeCode" : "desc2",
"value" : "value desc2"
,
"typeCode" : "desc3",
"value" : "value desc3"
],
"desc4" : "value desc4",
"desc5" : "value desc5",
"desc6" : "value desc6"
对于目前的情况，可以使用
[
"operation": "shift",
"spec":
"desc*": "test&",
"desc1|desc2|desc3":
"$": "additionalInformationList[#2].typeCode",
"@": "additionalInformationList[#2].value"
,
"operation": "shift",
"spec":
"test*":
"$": "@(0)"
,
"*": "&"
,
"operation": "modify-overwrite-beta",
"spec":
"*desc*": "=split('desc',@(1,&))"
,
"operation": "modify-overwrite-beta",
"spec":
"*desc*": "=join('',@(1,&))"
,
"operation": "shift",
"spec":
"*desc*":
"$": "@(0)"
,
"*": "&"
,
"operation": "remove",
"spec":
"test7": ""
]
通过单独编写 desc4、desc5 和 desc6 属性的键值对来缩短大小写可能是
[
"operation": "shift",
"spec":
"desc4": "test4",
"desc5": "test5",
"desc6": "test6",
"desc*":
"$": "&.code",
"@": "&.value"
,
"operation": "remove",
"spec":
"desc7": ""
,
"operation": "shift",
"spec":
"test*": "&",
"*": "additionalInformation[]"
]
【讨论】：
非常感谢@Barbaros，很有帮助以上是关于使用 Jolt 从 JSON 输出中删除空值的主要内容，如果未能解决你的问题，请参考以下文章
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