问题描述
[
{
"title" : "Article 1","createdDateTime": "2021-04-04T18:41:00"
},{
"title" : "Article 2","createdDateTime": "2021-04-04T18:49:00"
},{
"title" : "Article 3","createdDateTime": "2021-04-04T18:55:00"
}
]
我只想要 15 分钟前创建的文章,例如 datetime 现在是“2021-04-04T19:00:00”,我应该只得到第 2 条和第 3 条。尝试了这个表达式但没有用:
%dw 2.0
output application/json
---
payload filter ((value) -> (value.createdDateTime as: datetime{"yyyy-MM-ddTHH:mm:ss"} <= Now()-|PT15M|))
有没有更好的方法来做到这一点?谢谢!
解决方法
此解决方案使用一个函数来接收列表、时间戳(您可以使用 now())和一个句点。
%dw 2.0
output application/json
fun filterPeriod(list,time,period) =
payload filter ((value) -> (time - (value.createdDateTime
as LocalDateTime { format: "yyyy-MM-dd'T'HH:mm:ss"})) as Number {unit: "milliseconds"} <= period as Number {unit: "milliseconds"} )
---
filterPeriod(payload,|2021-04-04T19:00:00|,|PT15M|)
输出:
[
{
"title": "Article 2","createdDateTime": "2021-04-04T18:49:00"
},{
"title": "Article 3","createdDateTime": "2021-04-04T18:55:00"
}
]
``'