具有正确令牌的 ResourceNotFound Microsoft Graph Api

我想在没有用户的情况下在我的应用程序中使用 microsoft graph API.因为我使用此 url 通过租户 ID (a8ef7dd1-217d-430f-9ba0-4dd465b9098d) 获得访问令牌

I want to use microsoft graph API in my application without user. For I got access token by tenant id (a8ef7dd1-217d-430f-9ba0-4dd465b9098d) using this url

https://login.microsoftonline.com/a8ef7dd1-217d-430f-9ba0-4dd465b9098d/oauth2/v2.0/token

我在此请求后看到了正确的结果.在我尝试让用户使用此 url 之后https://graph.microsoft.com/v1.0/users

I see correct result after this request. Afte that I try to get user using this url https://graph.microsoft.com/v1.0/users

它对我来说也很好用.响应示例:{"@odata.context":"https://graph.microsoft.com/v1.0/$metadata#users","value":[{"businessPhones":[],"displayName":"IOTA CLM","givenName":"IOTA","jobTitle":null,"邮件":null,"mobilePhone":null,"officeLocation":null,"preferredLanguage":null,"surname":"CLM","userPrincipalName":"clm-iota_outlook.com#EXT#@clmiotaoutlook.onmicrosoft.com","id":"50ecbaed-9cee-411f-abb6-5e53e2a1051a"}]}

It also works fine for me. Example response: {"@odata.context":"https://graph.microsoft.com/v1.0/$metadata#users","value":[{"businessPhones":[],"displayName":"IOTA CLM","givenName":"IOTA","jobTitle":null,"mail":null,"mobilePhone":null,"officeLocation":null,"preferredLanguage":null,"surname":"CLM","userPrincipalName":"clm-iota_outlook.com#EXT#@clmiotaoutlook.onmicrosoft.com","id":"50ecbaed-9cee-411f-abb6-5e53e2a1051a"}]}

但是如果我尝试使用下一个获取请求获取邮件文件夹

But if I try to get mailFolders using next get request

https://graph.microsoft.com/v1.0/users/50ecbaed-9cee-411f-abb6-5e53e2a1051a/mailFolders

我看到 404 错误:

I see 404 error :

"code": "ResourceNotFound","message": "无法发现资源."

"code": "ResourceNotFound", "message": "Resource could not be discovered."

我错过了什么?