如何在 c# Microsoft graph api 请求中获取响应头 [英] How to get response header in c# Microsoft graph api request

问题描述

我正在尝试 文件复制 使用微软图形 API 在 c# .net 核心中操作.这是一个异步操作，根据文档，它说它返回 响应头检查操作状态，现在的问题是我需要它的响应头，以便我可以检查文件复制操作的状态，但是每次我将空"作为值时，我都尝试过以下代码，

I am trying to do File Copy operation in c# .net core using Microsoft graph API. It is an asynchronous operation, and by doc, it says it returns a location in the response header to check the status of the operation, Now the issue is I need its response header so that I can check the status of file copy operation but every time I am getting 'null' as value, I have tried following code,

DriveItem response = await graphClient.Sites[siteId].Drive.Items[itemId]
                           .Copy(fileName, parentReference)
                           .Request()
                           .PostAsync();

driveItem 返回 null，但我认为至少它应该返回额外的数据承载响应状态和位置.

The driveItem returns null but I think at least it should have returned the additional data-carrying response status and location.

当我在线使用 graph api 时，它可以正常返回响应和位置，但它没有图形客户端服务.

When I use online graph api it just works fine returning response and location, but it doesn't with graph client service.

推荐答案

显然是 msgraph-sdk-dotnet，至少在3.8.0版本可以复现，在d序列化HTTP响应时出现错误em>.可能将其报告为引用存储库中的错误会更有益.

Apparently it is an issue with msgraph-sdk-dotnet, at least it could be reproduced in 3.8.0 version, the error occurs while deserializing HTTP response. Probably it would be more beneficial to report it as a bug in referenced repository.

同时您可以考虑构建一个请求 复制 DriveItem 端点 并处理响应(包括提取 Location 标头)，如下所示:

Meanwhile you could consider to construct a request for Copy a DriveItem endpoint and process response (including extracting Location header) as demonstrated below:

var message = graphClient.Sites[siteId].Drive.Items[itemId]
                .Copy(fileName, parentReference)
                .Request()
                .GetHttpRequestMessage();

message.Method = HttpMethod.Post;
var body = new DriveItemCopyRequestBody {Name = fileName, ParentReference = parentReference};
message.Content = new StringContent(graphClient.HttpProvider.Serializer.SerializeObject(body));
message.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var response = graphClient.HttpProvider.SendAsync(message).Result;
           
Console.Write(response.Headers.Location);

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