使用Cinchoo ETL将Microsoft Graph JSON转换为CSV。

Question

我正试图将一个JSON文件（一个Microsoft.Graph.Event）转换为CSV文件。我正在使用Cinchoo ETL来做这件事。这里是我所指的URL。

https:/www.codeproject.comArticles1193650Cinchoo-ETL-Quick-Start-Converting-JSON-to-CSV-Fil

这是我的代码。

            using (var csv = new ChoCSVWriter(path + calendarId + ".csv").WithFirstLineHeader())
            {
                using (var json = new ChoJSONReader(path + calendarId + ".json")
                    .WithField("id")
                    .WithField("iCalUId")
                    .WithField("isAllDay")
                    .WithField("isCancelled")
                    .WithField("isOrganizer")
                    .WithField("isOnlineMeeting")
                    .WithField("onlineMeetingProvider")
                    .WithField("type")
                    .WithField("startTime", jsonPath: "$.start.dateTime")
                    .WithField("endTime", jsonPath: "$.end.dateTime")
                    .WithField("location", jsonPath: "$.location.displayname")
                    .WithField("locationType", jsonPath: "$.location.locationType")
                    .WithField("organizer", jsonPath: "$.organizer.emailAddress.name")
                    .WithField("recurrence", jsonPath: "$.recurrence.pattern.type")
                    )
                {
                    csv.Write(json);
                }
            }

虽然我得到了一个CSV文件 大部分的标题和值都是正确的 但有些是奇怪的。一些标题在后面得到了一个"_0"，一些值只是重复了前一列，而不是它应该是什么。csv文件的快照

我已经检查了我事先写好的JSON文件，但他们就很好。我使用的是.Net Core 3.1。

我只是一个初学者，任何帮助或建议都非常感激。谢谢你的帮助。

EDIT添加CSV的快照，其中一些值只是重复之前的列 "startTime"，而不是它应该是什么。

这就是预期的CSV输出。

这是JSON文件的一部分

  "start": {
    "dateTime": "2020-05-17T00:00:00.0000000",
    "timeZone": "UTC",
    "@odata.type": "microsoft.graph.dateTimeTimeZone"
  },
  "end": {
    "dateTime": "2020-05-18T00:00:00.0000000",
    "timeZone": "UTC",
    "@odata.type": "microsoft.graph.dateTimeTimeZone"
  },
  "location": {
    "displayName": "asdfads",
    "locationType": "default",
    "uniqueId": "b0fd5377-937d-4fb2-b70a-0a696972b46c",
    "uniqueIdType": "locationStore",
    "@odata.type": "microsoft.graph.location"
  },

Answer 1

在这里，我取了一个JSON样本，来自

https:/docs.microsoft.comen-usgraphapicalendar-post-events?view=graph-rest-1.0&tabs=http。

用于测试它。

下面是代码，使用 ChoETL v1.2.0.2 (最新)。

StringBuilder csv = new StringBuilder();

using (var w = new ChoCSVWriter(csv)
    .WithFirstLineHeader()
    )
{
    using (var r = new ChoJSONReader(@"C:\Projects\GitHub\ChoETL\src\Test\ChoJSONReaderTest\sample41.json")
        .WithField("id")
        .WithField("iCalUId")
        .WithField("isAllDay")
        .WithField("isCancelled")
        .WithField("isOrganizer")
        .WithField("isOnlineMeeting")
        .WithField("onlineMeetingProvider")
        .WithField("type")
        .WithField("startTime", jsonPath: "$.start.dateTime", isArray: false)
        .WithField("endTime", jsonPath: "$.end.dateTime", isArray: false)
        .WithField("location", jsonPath: "$.location.displayname")
        .WithField("locationType", jsonPath: "$.location.locationType", isArray: false)
        .WithField("organizer", jsonPath: "$.organizer.emailAddress.name", isArray: false)
        .WithField("recurrence", jsonPath: "$.recurrence.pattern.type")
    )
    {
        w.Write(r);
    }
}

Console.WriteLine(csv.ToString());

输出：

id,iCalUId,isAllDay,isCancelled,isOrganizer,isOnlineMeeting,onlineMeetingProvider,type,startTime,endTime,location,locationType,organizer,recurrence
AAMkAGViNDU7zAAAAA7zAAAZb2ckAAA=,040000008200E641B4C,False,False,True,False,unknown,singleInstance,3/15/2019 12:00:00 PM,3/15/2019 2:00:00 PM,,default,Megan Bowen,

UPDATE:这里是更新后的代码，以改变字段的顺序，并得到与会者的计数。

StringBuilder csv = new StringBuilder();

using (var w = new ChoCSVWriter(csv)
    .WithFirstLineHeader()
    )
{
    using (var r = new ChoJSONReader(@"C:\Projects\GitHub\ChoETL\src\Test\ChoJSONReaderTest\sample41.json")
        .WithField("startTime", jsonPath: "$.start.dateTime", isArray: false)
        .WithField("endTime", jsonPath: "$.end.dateTime", isArray: false)
        .WithField("id")
        .WithField("iCalUId")
        .WithField("isAllDay")
        .WithField("isCancelled")
        .WithField("isOrganizer")
        .WithField("isOnlineMeeting")
        .WithField("onlineMeetingProvider")
        .WithField("type")
        .WithField("location", jsonPath: "$.location.displayname")
        .WithField("locationType", jsonPath: "$.location.locationType", isArray: false)
        .WithField("organizer", jsonPath: "$.organizer.emailAddress.name", isArray: false)
        .WithField("recurrence", jsonPath: "$.recurrence.pattern.type")
        .WithField("attendees", jsonPath: "$.attendees[*]", valueConverter: o => ((IList)o).Count)
    )
    {
        w.Write(r);
    }
}

Console.WriteLine(csv.ToString());