C#使用YouTube V3 API添加评论

本文关键字：添加 评论 API V3 使用 YouTube | 更新日期: 2023-09-27 18:28:54

我正在使用C#并使用YouTube V3 API。我正试图在视频中插入评论，但每当我这样做时，我都会收到"{"Object reference not set to an instance of an object."}"的异常。每当我运行类似于上面代码的东西时，就会发生这种情况：

public void AddComment()
{
    CommentThread commentToAdd = new CommentThread();
    commentToAdd.Snippet.IsPublic = true;
    commentToAdd.Snippet.TopLevelComment.Snippet.TextOriginal = "Test";
    commentToAdd.Snippet.VideoId = "kc-LBxBcyG8";
    commentToAdd.Snippet.TopLevelComment.Snippet.VideoId = "kc-LBxBcyG8";
    CommentThreadsResource.InsertRequest ins = JKYouTube.NewYouTubeService().CommentThreads.Insert(commentToAdd, "snippet");
    var insertedComment = ins.Execute();
}

我将其与谷歌浏览器进行比较，并使用相同的属性，浏览器实际上在我的程序失败的地方添加了注释。https://developers.google.com/youtube/v3/docs/commentThreads/insert

一旦到达的第二行代码commentToAdd.Snippet.IsPublic = true;

它只会出错，并继续上面的每一行。

如有任何帮助，我们将不胜感激。

C#使用YouTube V3 API添加评论

您的问题在于Snippet是null。

从您提供的API链接中获取，您需要首先创建一个CommentSnippet。

在谷歌提供的例子中：

// Insert channel comment by omitting videoId.
// Create a comment snippet with text.
CommentSnippet commentSnippet = new CommentSnippet();
commentSnippet.setTextOriginal(text);

首先，用一些文本创建一个CommentSnippet，然后我们创建一个顶级注释：

// Create a top-level comment with snippet.
Comment topLevelComment = new Comment();
topLevelComment.setSnippet(commentSnippet);

然后，将您的topLevelComment添加到CommentThreadSnippet:

// Create a comment thread snippet with channelId and top-level
// comment.
CommentThreadSnippet commentThreadSnippet = new CommentThreadSnippet();
commentThreadSnippet.setChannelId(channelId);
commentThreadSnippet.setTopLevelComment(topLevelComment);

当你终于有了CommentThreadSnippet时，你可以把它添加到CommentThread:中

// Create a comment thread with snippet.
CommentThread commentThread = new CommentThread();
commentThread.setSnippet(commentThreadSnippet);

遵循这些步骤不应为您提供NRE

非常感谢您的帮助。设法完成了。

async Task AddVideoCommentAsync(string commentToAdd, string videoID)
    {
        CommentSnippet commentSnippet = new CommentSnippet();
        commentSnippet.TextOriginal = commentToAdd;
        Comment topLevelComment = new Comment();
        topLevelComment.Snippet = commentSnippet;
        CommentThreadSnippet commentThreadSnippet = new CommentThreadSnippet();
        commentThreadSnippet.VideoId = videoID;
        commentThreadSnippet.TopLevelComment = topLevelComment;
        CommentThread commentThread = new CommentThread();
        commentThread.Snippet = commentThreadSnippet;
        var youtubeService = await NewYouTubeService();
        CommentThreadsResource.InsertRequest insertComment = youtubeService.CommentThreads.Insert(commentThread, "snippet");
        await insertComment.ExecuteAsync();
    }
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