Microsoft Graph - 访问 OnlineMeetings 成绩单 - 指定的格式“application/octet-stream、application/json”无效

Question

好的，我在控制台应用程序中使用了以下 C# 代码：

var deviceCodeCredential = new DeviceCodeCredential(new DeviceCodeCredentialOptions
{
    AuthorityHost = AzureAuthorityHosts.AzurePublicCloud,
    ClientId = AzureClientID,
    TenantId = AzureTenantID,
    DeviceCodeCallback = (code, cancellation) =>
    {
        Console.WriteLine(code.Message);
        return Task.FromResult(0);
    }
});

var graphClient = new GraphServiceClient(deviceCodeCredential, 
    new[] { "User.Read", "OnlineMeetingTranscript.Read.All" });  
          
var meeting = await graphClient.Me.OnlineMeetings.GetAsync((requestConfiguration) =>
{
    requestConfiguration.QueryParameters.Filter = "joinWebUrl eq '" + TeamsURL + "'";
});

var transcript = await graphClient.Me.OnlineMeetings[meeting.Value[0].Id].Transcripts.GetAsync();

var transcriptText = await graphClient.Me.OnlineMeetings[meeting.Value[0].Id].Transcripts[transcript.Value[0].Id].Content.GetAsync((requestConfiguration) =>
{
    requestConfiguration.Headers.Add("Content-Type", "text/vtt");
});    

/*
API Docuementation suggests I do this: https://learn.microsoft.com/en-us/graph/api/calltranscript-get?view=graph-rest-1.0&tabs=csharp#example-2-get-a-calltranscript-content

However the "QueryParameters" returned is of type "DefaultQueryParameters"(which appears to be empty), so the for "Format" property does exist and the code won't build

var transcriptText = await graphClient.Me.OnlineMeetings[meeting.Value[0].Id].Transcripts[transcript.Value[0].Id].Content.GetAsync((requestConfiguration) =>
{
    requestConfiguration.QueryParameters.Format = "text/vtt";
});    
*/

但是，当我运行此命令而不是接收成绩单时，我收到以下错误：

指定的格式“application/octet-stream、application/json”无效。

我该如何解决这个问题，如何指示图形 API 期望 API 输出“应用程序/八位字节流”。

Answer 1

最初，当我在我的环境中运行您的代码以获取通话记录内容时，我也遇到了同样的错误：

要解决该错误，请使用下面的modified代码，该代码在控制台中提供在线会议记录内容，如下所示：

using System.Text;
using Azure.Identity;
using Microsoft.Graph;
using Microsoft.Graph.Models.ODataErrors;

namespace MSOnlineMeeting
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var scopes = new[] { "User.Read", "OnlineMeetingTranscript.Read.All", "OnlineMeetings.Read" };
            var AzureTenantID = "tenantId";
            var AzureClientID = "appId";

            var options = new DeviceCodeCredentialOptions
            {
                AuthorityHost = AzureAuthorityHosts.AzurePublicCloud,
                ClientId = AzureClientID,
                TenantId = AzureTenantID,
                DeviceCodeCallback = (code, cancellation) =>
                {
                    Console.WriteLine(code.Message);
                    return Task.FromResult(0);
                },
            };

            var deviceCodeCredential = new DeviceCodeCredential(options);
            var graphClient = new GraphServiceClient(deviceCodeCredential, scopes);

            try
            {
                var meetings = await graphClient.Me.OnlineMeetings.GetAsync((requestConfiguration) =>
                {
                    requestConfiguration.QueryParameters.Filter = "joinWebUrl eq 'URL'";
                });

                if (meetings.Value.Count == 0)
                {
                    Console.WriteLine("No meetings found.");
                    return;
                }

                var meetingId = meetings.Value[0].Id;

                var transcripts = await graphClient.Me.OnlineMeetings[meetingId].Transcripts.GetAsync();

                if (transcripts.Value.Count == 0)
                {
                    Console.WriteLine("No transcripts found.");
                    return;
                }

                var transcriptId = transcripts.Value[0].Id;

                var transcriptContentStream = await graphClient.Me.OnlineMeetings[meetingId].Transcripts[transcriptId].Content.GetAsync((requestConfiguration) =>
                {
                    requestConfiguration.Headers.Add("Accept", "text/vtt");
                });

                using (var memoryStream = new MemoryStream())
                {
                    await transcriptContentStream.CopyToAsync(memoryStream);
                    string transcriptText = Encoding.UTF8.GetString(memoryStream.ToArray());
                    Console.WriteLine(transcriptText);
                }
            }
            catch (ODataError odataError)
            {
                Console.WriteLine($"Error Code: {odataError.Error.Code}");
                Console.WriteLine($"Error Message: {odataError.Error.Message}");
            }
        }
    }
}

回复：

参考： 获取通话记录 - Microsoft Graph v1.0