使用MS Graph SDK获取mailboxSettings时遇无效用户等错误求助

使用MS Graph API实现后端接口，通过客户端凭证流获取其他用户的邮箱设置（用于读取外出消息），已为应用授予MailboxSettings.Read和MailboxSettings.ReadWrite应用类型权限。

测试环境 #

• 免费Azure账户，登录账户为test@hotmail.com，Azure域为testhotmail.onmicrosoft.com
• 已在Azure中创建用户client@testhotmail.onmicrosoft.com

Graph Explorer测试结果 #

成功调用的接口 #

https://graph.microsoft.com/v1.0/users/test@hotmail.com
https://graph.microsoft.com/v1.0/users/test@hotmail.com/mailboxSettings
https://graph.microsoft.com/v1.0/users/client@testhotmail.onmicrosoft.com

调用失败的接口及错误信息 #

调用https://graph.microsoft.com/v1.0/users/client@testhotmail.onmicrosoft.com/mailboxSettings返回错误：

{
"error": {
"code": "ErrorInvalidUser",
"message": "The requested user 'client@testhotmail.onmicrosoft.com' is invalid."
} }

MS Graph SDK测试结果 #

3a. 获取client用户信息成功 #

执行以下代码可正常获取client@testhotmail.onmicrosoft.com的用户信息：

var scopes = new[] { "https://graph.microsoft.com/.default" };
    
var options = new TokenCredentialOptions
{
   AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
};
    
var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);
    
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);
    
var user = await graphClient.Users["client@testhotmail.onmicrosoft.com"].Request().GetAsync();

3b. 获取test用户信息失败 #

执行以下代码获取test@hotmail.com用户信息时返回错误：

Microsoft.Graph.ServiceException: 'Code: Request_ResourceNotFound
Message: Resource 'test@hotmail.com' does not exist or one of its
queried reference-property objects are not present.

代码：

var user = await graphClient.Users["test@hotmail.com"].Request().GetAsync();

获取邮箱设置的SDK调用错误 #

调用test用户邮箱设置失败 #

执行以下代码返回错误：

Microsoft.Graph.ServiceException: 'Code: ErrorInvalidUser Message: The
requested user 'test@hotmail.com' is invalid.

代码：

var scopes = new[] { "https://graph.microsoft.com/.default" };
    
var options = new TokenCredentialOptions
{
   AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
};
    
var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);
    
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

var mail = await graphClient.Users["test@hotmail.com"].Request().Select("MailboxSettings").GetAsync();

调用client用户邮箱设置失败 #

执行以下代码返回错误：

Microsoft.Graph.ServiceException: 'Code: ResourceNotFound Message:
Resource could not be discovered.

代码：

var mail = await graphClient.Users["client@testhotmail.onmicrosoft.com"].Request().Select("MailboxSettings").GetAsync();

内容的提问来源于stack exchange，提问作者Sang