如何使用带有 C# 的 YouTube 数据 API 获取视频状态

Question

我在 3 天内尝试了代码以在我的 YouTube 频道中获取视频状态信息，但没有成功。

下面是我使用的代码，我可以writeln()视频的标题、id、描述，但无法获取视频状态。

private async Task Editvideo()
{
    UserCredential credential;
    using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
    {
        credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
            GoogleClientSecrets.Load(stream).Secrets,
            // This OAuth 2.0 access scope allows for read-only access to the authenticated 
            // user's account, but not other types of account access.
            new[] { YouTubeService.Scope.YoutubeReadonly },
            "user",
            CancellationToken.None,
            new FileDataStore(this.GetType().ToString())
        );
    }

    var youtubeService = new YouTubeService(new BaseClientService.Initializer()
    {
        HttpClientInitializer = credential,
        ApplicationName = this.GetType().ToString()
    });

    var channelsListRequest = youtubeService.Channels.List("contentDetails");
    channelsListRequest.Mine = true;

    // Retrieve the contentDetails part of the channel resource for the authenticated user's channel.
    var channelsListResponse = await channelsListRequest.ExecuteAsync();

    foreach (var channel in channelsListResponse.Items)
    {
        // From the API response, extract the playlist ID that identifies the list
        // of videos uploaded to the authenticated user's channel.
        var uploadsListId = channel.ContentDetails.RelatedPlaylists.Uploads;

        Console.WriteLine("Videos in list {0}", uploadsListId);

        var nextPageToken = "";
        while (nextPageToken != null)
        {
            var playlistItemsListRequest = youtubeService.PlaylistItems.List("snippet");
            playlistItemsListRequest.PlaylistId = uploadsListId;
            playlistItemsListRequest.MaxResults = 50;
            playlistItemsListRequest.PageToken = nextPageToken;

            

            // Retrieve the list of videos uploaded to the authenticated user's channel.
            var playlistItemsListResponse = await playlistItemsListRequest.ExecuteAsync();
            

            foreach (var playlistItem in playlistItemsListResponse.Items)
            {
                // Print information about each video.
                // playlistItem.Status = new PlaylistItemStatus();
                // string videostatus = playlistItem.Status.PrivacyStatus;
                // Console.WriteLine(videostatus);
                Console.WriteLine("{0} ({1})", playlistItem.Snippet.Title, playlistItem.Snippet.ResourceId.VideoId);
            }

            nextPageToken = playlistItemsListResponse.NextPageToken;
        }
    }
}

Answer 1

如果考虑到PlaylistItems.list API 端点的part 请求参数的规范，您的问题的答案是立竿见影的：

part（字符串）

part 参数指定 API 响应将包含的一个或多个 playlistItem 资源属性的逗号分隔列表。

如果参数标识包含子属性的属性，则子属性将包含在响应中。例如，在playlistItem 资源中，snippet 属性包含许多字段，包括title、description、position 和resourceId 属性。因此，如果您设置part=snippet，API 响应将包含所有这些属性。

以下列表包含您可以包含在参数值中的part 名称：

• contentDetails
• id
• snippet
• status

现在，很明显，当需要端点返回status 属性时，part 也应该包含status，如下所示：

var playlistItemsListRequest = youtubeService
        .PlaylistItems.List("snippet,status");            

通过对代码的这种修改，从API获得的响应将包含playlistItem.Status下的查询对象。