Microsoft Graph 下载文件内容返回 404 [英] Microsoft Graph download file content returns 404

问题描述

我尝试使用 Grpah API 下载文件.

I tried to download a file with Grpah API.

使用 API 浏览器测试，https://graph.microsoft.io/en-us/graph-explorer#

Tested with API browser, https://graph.microsoft.io/en-us/graph-explorer#

运行以下请求，获取文件/文件夹项目信息列表，

Ran following request, got list of file/folder item information,

https://graph.microsoft.com/v1.0/me/drive/root/children

对于其中一个文件项目，我能够获取项目信息.

And for one of the file item, I was able to get item information.

https://graph.microsoft.com/beta/me/drive/items/_an_item_id

但以下返回 HTTP 404.

But following returns HTTP 404.

https://graph.microsoft.com/beta/me/drive/items/_an_item_id/content

出现这种症状的原因是什么?

What will be the cause for this symptom?

推荐答案

不支持向 https://graph.microsoft.com/beta/me/drive/items/ 执行请求/content 端点通过 Graph Explorer.

It is not supported to perform request to https://graph.microsoft.com/beta/me/drive/items/<itemid>/content endpoint via Graph Explorer.

通过 Grath Explorer 发送到 https://graph.microsoft.com/beta/me/drive/items/<itemid>/content 端点的请求作为 预检请求.服务器以 302-Redirect 响应，但由于 CORS 行为.

The request sent to https://graph.microsoft.com/beta/me/drive/items/<itemid>/content endpoint via Grath Explorer is issued as a preflight request. The server responds with 302-Redirect but redirects are not allowed for preflighted requests due to CORS behavior.

这里有一个关于如何下载文件的解决方法

Here is a workaround on how to download a file

以下驱动项资源请求:

https://graph.microsoft.com/beta/me/drive/items/<itemId>

返回 @microsoft.graph.downloadUrl 注释，其中包含文件资源的实际链接.

returns @microsoft.graph.downloadUrl annotation which contains the actual link to file resource.

检索驱动器项资源后，对来自 @microsoft.graph.downloadUrl 的 url 执行另一个 GET 请求以返回实际文件.

Once the drive item resource is retrieved, perform another GET request to url from @microsoft.graph.downloadUrl to return the actual file.

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