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问题描述
我正在使用 C# 处理 Web 应用程序，用户将在其中浏览视频文件，Web 应用程序将通过 YouTube API V3 上传到 YouTube.我收到错误.请指教我哪里做错了?
错误:System.ArgumentNullException:值不能为空.参数名称: baseUri at Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task) at Microsoft.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Microsoft.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult() at Google.Apis.Upload.ResumableUpload1.d__e.MoveNext() in c:\code\google.com\google-api-dotnet-client\default\Tools\Google.Apis.Release\bin\Debug\output\default\Src\GoogleApis\Apis[Media]\Upload\ResumableUpload.cs:line 459
我遵循了以下几点.
为 Web 应用程序创建 ClientID 并从 API 访问页面下载 client_secrets.json 文件.
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet", uploadStream, contenttype);
致:
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", uploadStream, contenttype);
另外，内容类型是什么?我使用 video/* 作为视频上传的内容类型.
状态码 401 错误可能是因为 YouTube API 尚未获得授权.检查您是否已为您的凭据授权 YouTube API.转到 Google Developers Console 并点击您的项目名称.然后单击左侧导航菜单中的API".检查 YouTube Data API v3 是否已开启.
I am working with Web application with C# where user will browse a video file and web application will upload to YouTube via YouTube API V3. I am getting the error. Please advice where i am doing wrong?
Error: System.ArgumentNullException: Value cannot be null. Parameter name: baseUri at Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task) at Microsoft.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Microsoft.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult() at Google.Apis.Upload.ResumableUpload1.d__e.MoveNext() in c:\code\google.com\google-api-dotnet-client\default\Tools\Google.Apis.Release\bin\Debug\output\default\Src\GoogleApis\Apis[Media]\Upload\ResumableUpload.cs:line 459
I followed the below points.
Created ClientID for Webapplication and downloaded client_secrets.json file from API Access page.
using System;
using System.Web;
using System.IO;
using QA.credential;
using Google.Apis.Auth.OAuth2;
using Google.Apis.YouTube.v3;
using Google.Apis.Services;
using Google.Apis.YouTube.v3.Data;
using Google.Apis.Upload;
public partial class TestFileUploader : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void submit_Click(object sender, EventArgs e)
{
try
{
if (FileUpload1.HasFile)
{
String FileUpload1_Ext = System.IO.Path.GetExtension(this.FileUpload1.PostedFile.FileName);
UploadVideos(FileUpload1.FileContent, FileUpload1.PostedFile.ContentType);
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
private async void UploadVideos(Stream uploadedStream, String contenttype)
{
try
{
UserCredential credential;
String clientsecretkeypath = HttpContext.Current.Server.MapPath("~/client_secrets.json");
using (var stream = new FileStream(clientsecretkeypath, FileMode.Open, FileAccess.Read))
{
credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
new[] { YouTubeService.Scope.YoutubeUpload },
"user", System.Threading.CancellationToken.None);
}
// Create the service.
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
//ApiKey = "AIzaSyAFxuAA4r4pf6VX75zEwCrIh5z4QkzOZ6M",
HttpClientInitializer = credential,
ApplicationName = PhotoandVideoupload.applicationname
});
var video = new Video();
video.Snippet = new VideoSnippet();
video.Snippet.Title = "My Test Movie";
video.Snippet.Description = "My description";
video.Snippet.Tags = new string[] { "Autos" };
video.Snippet.CategoryId = "2";
video.Status = new VideoStatus();
video.Status.PrivacyStatus = "unlisted";
// Using snippet,status below throws 401(UnAuthorized issue).
// Using snippet alone throws 404(Bad Request).
//In both case, Null Exception throws for parameter baseURI.
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet", uploadedStream, contenttype);
videosInsertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
videosInsertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;
Google.Apis.Upload.IUploadProgress progress = await videosInsertRequest.UploadAsync();
switch (progress.Status)
{
case UploadStatus.Uploading:
Response.Write(String.Format("{0} bytes sent.", progress.BytesSent));
break;
case UploadStatus.Failed:
Response.Write(String.Format("{0}<br/>", progress.Exception.Message));
Response.Write(String.Format("{0}<br/>", progress.Exception.StackTrace));
break;
}
// Also tried to read file from server path instead of uploading via fileupload control.
/*
using (var fileStream = new FileStream(HttpContext.Current.Server.MapPath("~/1.mp4"), FileMode.Open))
{
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", fileStream, contenttype);
videosInsertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
videosInsertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;
await videosInsertRequest.UploadAsync();
}
*/
}
catch (Exception ex)
{
Response.Write(ex.Message + " " + ex.StackTrace);
}
finally
{
}
}
void videosInsertRequest_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
{
switch (progress.Status)
{
case UploadStatus.Uploading:
Response.Write(String.Format("{0} bytes sent.", progress.BytesSent));
break;
case UploadStatus.Failed:
Response.Write(String.Format("{0}<br/>", progress.Exception.Message));
Response.Write(String.Format("{0}<br/>", progress.Exception.StackTrace));
break;
}
}
void videosInsertRequest_ResponseReceived(Video video)
{
Response.Write(String.Format("Video id '{0}' was successfully uploaded.", video.Id));
}
}
Please advice where i am doing wrong?
Thanks,
解决方案
You might try the following change:
From:
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet", uploadedStream, contenttype);
To:
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", uploadedStream, contenttype);
Also, what is in contenttype? I use video/* as the contenttype for video uploads.
The status code 401 error may be because the YouTube API has not been authorized. Check that you have authorized the YouTube API for your credentials. Go to Google Developers Console and click on your project name. Then click on "APIs" in the left navigation menu. Check to see that YouTube Data API v3 is On.
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