我正在使用C＃的Web应用程序，用户将浏览视频文件，Web应用程序将通过YouTube API V3上传到YouTube。我收到了错误。请告诉我哪里做错了？
错误：System.ArgumentNullException：值不能为null。参数名：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（）位于c：\ code \ google.com \ google-api-dotnet-client \ default \ Tools \ Google.Apis中的Google.Apis.Upload.ResumableUpload1.d__e.MoveNext（）。 Release \ bin \ Debug \ output \ default \ Src \ GoogleApis \ Apis [Media] \ Upload \ ResumableUpload.cs：line 459
我遵循以下几点。
我粘贴在我的代码下面供你参考。
/ * TestFileUploader.aspx * /
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestFileUploader.aspx.cs" Inherits="TestFileUploader" Async="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<form id="qaform" runat="server">
<div>
<p>
<asp:FileUpload runat="server" ID="FileUpload1" onchange="AddEventChoosePicture(this,'FileUpload1')"
Style="width: 100%;" />
</p>
<p>
<asp:Button ID="submit" runat="server" OnClick="submit_Click" Text="Submit" />
</p>
</div>
</form>
</body>
</html>
/ * TestFileUploader.aspx.cs * /
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));
}
}
请告知我哪里做错了？
谢谢，
答案 0 :(得分：0)
您可以尝试以下更改：
自：
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet", uploadedStream, contenttype);
要：
var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", uploadedStream, contenttype);
另外，contenttype是什么？我使用 video / * 作为视频上传的内容类型。
状态代码401错误可能是因为YouTube API尚未获得授权。检查您是否已授权使用YouTube API获取凭据。转到Google Developers Console，然后单击您的项目名称。然后点击＆＃34; API＆＃34;在左侧导航菜单中。检查 YouTube Data API v3 是否已开启。