C#图API调用委托

调用Graph API请求

我正在尝试使用c#和控制台应用程序调用委托调用。这是我目前收到的错误代码：generalException\r\n消息：发送请求时出错。\r\n“

这是一个试图调用graph api的c#控制台

static void Main(string[] args)
        {
            try
            {
                RunAsync().GetAwaiter().GetResult();
            }
            catch(Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.WriteLine("Press any key to exit");
            Console.ReadKey();
        }

        private static async Task RunAsync()
        {
            string secretKey = <secretKey>;
            string appId = <clientID>;
            string tenantId = <tenantID>;
            string tokenUrl = "https://login.microsoftonline.com/common/oauth2/v2.0/token";
            List<string> scopeURL = new List<string>();
            scopeURL.Add("https://graph.microsoft.com/.default");

            Console.WriteLine("Enter a username");
            string username = Console.ReadLine();
            Console.WriteLine("Enter a password");
            var password = GetConsoleSecurePassword();

            var httpClient = new HttpClient();

            IPublicClientApplication publicClientApplication = PublicClientApplicationBuilder
            .Create(appId)
            .WithTenantId(tenantId)
            .Build();

            UsernamePasswordProvider authProvider = new UsernamePasswordProvider(publicClientApplication, scopeURL);

            GraphServiceClient graphClient = new GraphServiceClient(authProvider);
            try
            {
                User me = await graphClient.Me.Request()
                            .WithUsernamePassword(username, password)
                            .GetAsync();

                var books = await graphClient.BookingBusinesses.Request().GetAsync();
                foreach (var book in books)
                {
                    Console.WriteLine(book.DisplayName);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }

        private static SecureString GetConsoleSecurePassword()
        {
            SecureString pwd = new SecureString();
            while (true)
            {
                ConsoleKeyInfo i = Console.ReadKey(true);
                if (i.Key == ConsoleKey.Enter)
                {
                    break;
                }
                else if (i.Key == ConsoleKey.Backspace)
                {
                    pwd.RemoveAt(pwd.Length - 1);
                    Console.Write("\b \b");
                }
                else
                {
                    pwd.AppendChar(i.KeyChar);
                    Console.Write("*");
                }
            }
            return pwd;
        }

static void Main（字符串[]args）
{
尝试
{
RunAsync（）.GetAwaiter（）.GetResult（）；
}
捕获（例外情况除外）
{
控制台写入线（例如消息）；
}
Console.WriteLine（“按任意键退出”）；
Console.ReadKey（）；
}
专用静态异步任务RunAsync（）
{
字符串secretKey=；
字符串appId=；
字符串tenantId=；
字符串标记URL=”https://login.microsoftonline.com/common/oauth2/v2.0/token";
List scopeURL=new List（）；
scopeURL.Add（“https://graph.microsoft.com/.default");
Console.WriteLine（“输入用户名”）；
字符串username=Console.ReadLine（）；
Console.WriteLine（“输入密码”）；
var password=GetConsoleSecurePassword（）；
var httpClient=新的httpClient（）；
IPPublicClient应用程序publicClientApplication=PublicClientApplicationBuilder
.Create（appId）
.WithTenantId（tenantId）
.Build（）；
UsernamePasswordProvider authProvider=新的UsernamePasswordProvider（publicClientApplication，scopeURL）；
GraphServiceClient graphClient=新的GraphServiceClient（authProvider）；
尝试
{
User me=wait graphClient.me.Request（）
.WithUsernamePassword（用户名、密码）
.GetAsync（）；
var books=await-graphClient.bookingbusiness.Request（）.GetAsync（）；
foreach（账簿中的var账簿）
{
Console.WriteLine（book.DisplayName）；
}
}
捕获（例外情况除外）
{
控制台写入线（例如消息）；
}
}
私有静态SecureString GetConsoleSecurePassword（）
{
SecureString pwd=新SecureString（）；
while（true）
{
ConsoleKeyInfo i=Console.ReadKey（true）；
如果（i.Key==ConsoleKey.Enter）
{
打破
}
else if（i.Key==ConsoleKey.Backspace）
{
pwd.RemoveAt（pwd.Length-1）；
Console.Write（“\b\b”）；
}
其他的
{
pwd.AppendChar（i.KeyChar）；
控制台。写（“*”）；
}
}
返回pwd；
}

我真的很想打电话给bookingBusiness，但我甚至无法阅读我的用户

这是我的申请许可。我错过了什么？

如所问

Message: An error occurred sending the request.

 ---> Microsoft.Graph.Auth.AuthenticationException: Code: generalException
Message: Unexpected exception returned from MSAL.

 ---> MSAL.NetCore.4.19.0.0.MsalServiceException:
        ErrorCode: service_not_available
Microsoft.Identity.Client.MsalServiceException: Service is unavailable to process the request
   at Microsoft.Identity.Client.Http.HttpManager.ExecuteWithRetryAsync(Uri endpoint, IDictionary`2 headers, HttpContent body, HttpMethod method, ICoreLogger logger, Boolean doNotThrow, Boolean retry)
   at Microsoft.Identity.Client.Http.HttpManager.ExecuteWithRetryAsync(Uri endpoint, IDictionary`2 headers, HttpContent body, HttpMethod method, ICoreLogger logger, Boolean doNotThrow, Boolean retry)
   at Microsoft.Identity.Client.Http.HttpManager.SendGetAsync(Uri endpoint, IDictionary`2 headers, ICoreLogger logger)
   at Microsoft.Identity.Client.WsTrust.WsTrustWebRequestManager.GetMexDocumentAsync(String federationMetadataUrl, RequestContext requestContext)
   at Microsoft.Identity.Client.WsTrust.CommonNonInteractiveHandler.PerformWsTrustMexExchangeAsync(String federationMetadataUrl, String cloudAudienceUrn, UserAuthType userAuthType, String username, SecureString password)
   at Microsoft.Identity.Client.Internal.Requests.UsernamePasswordRequest.FetchAssertionFromWsTrustAsync()
   at Microsoft.Identity.Client.Internal.Requests.UsernamePasswordRequest.ExecuteAsync(CancellationToken cancellationToken)
   at Microsoft.Identity.Client.Internal.Requests.RequestBase.RunAsync(CancellationToken cancellationToken)
   at Microsoft.Identity.Client.ApiConfig.Executors.PublicClientExecutor.ExecuteAsync(AcquireTokenCommonParameters commonParameters, AcquireTokenByUsernamePasswordParameters usernamePasswordParameters, CancellationToken cancellationToken)
   at Microsoft.Graph.Auth.UsernamePasswordProvider.GetNewAccessTokenAsync(AuthenticationProviderOption msalAuthProviderOption)
        StatusCode: 500
        ResponseBody: <?xml version="1.0" encoding="utf-8" ?><s:Value xmlns:s="http://www.w3.org/2003/05/soap-envelope">s:Receiver</s:Value>
        Headers: Cache-Control: private
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Mon, 28 Sep 2020 12:48:52 GMT

   --- End of inner exception stack trace ---
   at Microsoft.Graph.Auth.UsernamePasswordProvider.GetNewAccessTokenAsync(AuthenticationProviderOption msalAuthProviderOption)
   at Microsoft.Graph.Auth.UsernamePasswordProvider.AuthenticateRequestAsync(HttpRequestMessage httpRequestMessage)
   at Microsoft.Graph.AuthenticationHandler.SendAsync(HttpRequestMessage httpRequestMessage, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
   at Microsoft.Graph.HttpProvider.SendRequestAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at Microsoft.Graph.HttpProvider.SendRequestAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
   at Microsoft.Graph.HttpProvider.SendAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
   at Microsoft.Graph.BaseRequest.SendRequestAsync(Object serializableObject, CancellationToken cancellationToken, HttpCompletionOption completionOption)
   at Microsoft.Graph.BaseRequest.SendAsync[T](Object serializableObject, CancellationToken cancellationToken, HttpCompletionOption completionOption)
   at Microsoft.Graph.UserRequest.GetAsync(CancellationToken cancellationToken)
   at ConsoleGraph.Program.ClientDelegateApp(String clientId, String tenantId, String secretKey, List`1 scopes) in D:\src\ConsoleGraph\ConsoleGraph\Program.cs:line 61

消息：发送请求时出错。
--->Microsoft.Graph.Auth.AuthenticationException:代码：generalException
消息：MSAL返回意外异常。
--->MSAL.NetCore.4.19.0.0.MsalServiceException:
错误代码：服务不可用
Microsoft.Identity.Client.MsalServiceException:服务无法处理请求
位于Microsoft.Identity.Client.Http.HttpManager.ExecuteWithRetryAsync（Uri端点、IDictionary`2头、HttpContent正文、HttpMethod方法、ICoreLogger记录器、布尔doNotThrow、布尔重试）
位于Microsoft.Identity.Client.Http.HttpManager.ExecuteWithRetryAsync（Uri端点、IDictionary`2头、HttpContent正文、HttpMethod方法、ICoreLogger记录器、布尔doNotThrow、布尔重试）
位于Microsoft.Identity.Client.Http.HttpManager.SendGetAsync（Uri端点，IDictionary`2头，ICoreLogger记录器）
位于Microsoft.Identity.Client.WsTrust.WsTrustWebRequestManager.GetMexDocumentAsync（字符串federationMetadataUrl，RequestContext RequestContext）
位于Microsoft.Identity.Client.WsTrust.CommonNonInteractiveHandler.PerformWStrustExexChangeAsync（String federationMetadataUrl、String CloudAudienceUrl、UserAuthType UserAuthType、String用户名、SecureString密码）
在Microsoft.Identity.Client.Internal.Requests.UsernamePasswordRequest.FetchAssertionFromWsTrustAsync（）中
位于Microsoft.Identity.Client.Internal.Requests.UsernamePasswordRequest.ExecuteAsync（CancellationToken CancellationToken）
位于Microsoft.Identity.Client.Internal.Requests.RequestBase.RunAsync（CancellationToken CancellationToken）
位于Microsoft.Identity.Client.ApiConfig.Executors.PublicClientExecutor.ExecuteAsync（AcquireTokenCommonParameters commonParameters、AcquireTokenByUsernamePasswordParameters usernamePasswordParameters、CancellationTokenCancellationToken）
位于Microsoft.Graph.Auth.UsernamePasswordProvider.GetNewAccessTokenAsync（AuthenticationProviderOption msalAuthProviderOption）
状态代码：500
响应体：s:接收器
标头：缓存控制：专用
服务器：Microsoft IIS/10.0
X-AspNet-Version:4.0.30319
X-Powered-By:ASP.NET
日期：2020年9月28日星期一12:48:52 GMT
---内部异常堆栈跟踪的结束---
位于Microsoft.Graph.Auth.UsernamePasswordProvider.GetNewAccessTokenAsync（AuthenticationProviderOption msalAuthProviderOption）
位于Microsoft.Graph.Auth.UsernamePasswordProvider.AuthenticateRequestsAsync（HttpRequestMessage HttpRequestMessage）
位于Microsoft.Graph.AuthenticationHandler.SendAsync（HttpRequestMessage HttpRequestMessage，CancellationToken CancellationToken）
位于System.Net.Http.HttpClient.FinishSendAsyncBuffered（任务'1 sendTask，HttpRequestMessage请求，取消令牌源cts，布尔处理）
在Microsoft.Graph.HttpProvider.SendRequestAsync（HttpRequestMessage请求，HttpCompletionOption completionOption，CancellationToken CancellationTok