Youtube api YouTube API textDisplay对于所有评论均为空

我们有一个网站，几个月来一直在使用YouTube API加载视频评论，没有问题。这个周末，我们注意到所有评论的评论文本都消失了，所有视频都是如此！作者信息、publishdAt等都很顺利，但snippet.textDisplay对于每条评论都是空白的。如果我在YouTube.com上观看视频，评论就可以了

API URL示例：

部分JSON返回：

{
 "kind": "youtube#commentThreadListResponse",
 "etag": "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/HnKLJJvaX5o82p7SOXqZoax63Pk\"",
 "nextPageToken": "Cg0QvLX3nrHpygIgACgBEhQIAxDQibyJ2oDKAhiwy_Dp193CAhgCIBEo_dG1q83Pj81Z",
 "pageInfo": {
  "totalResults": 17,
  "resultsPerPage": 20
 },
 "items": [
  {
   "kind": "youtube#commentThread",
   "etag": "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/Fme5IvQu6tqWHp4YOLrYer7CIV0\"",
   "id": "z12mcbxpbsvvvjpep22qufvxxsqiith5g04",
   "snippet": {
    "videoId": "1nFywcC37i0",
    "topLevelComment": {
     "kind": "youtube#comment",
     "etag": "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/ldVLSDtTKPhMl-FtaJHj6FzFBxs\"",
     "id": "z12mcbxpbsvvvjpep22qufvxxsqiith5g04",
     "snippet": {
      "authorDisplayName": "Tea Culture",
      "authorProfileImageUrl": "https://lh3.googleusercontent.com/-gnq7syMNFPM/AAAAAAAAAAI/AAAAAAAABcY/GOY--FZpe0w/photo.jpg?sz=50",
      "authorChannelUrl": "http://www.youtube.com/channel/UCLTjm6qRUveEL2-q0UcFjWQ",
      "authorChannelId": {
       "value": "UCLTjm6qRUveEL2-q0UcFjWQ"
      },
      "videoId": "1nFywcC37i0",
      "textDisplay": "",
      "authorGoogleplusProfileUrl": "https://plus.google.com/113856310904021846289",
      "canRate": false,
      "viewerRating": "none",
      "likeCount": 1,
      "publishedAt": "2015-12-29T08:58:47.729Z",
      "updatedAt": "2015-12-29T08:58:47.729Z"
     }
    },
    "canReply": false,
    "totalReplyCount": 0,
    "isPublic": true
   }
  },
  {
   "kind": "youtube#commentThread",
   "etag": "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/74T1pezkd-XvwRlS2TdnS55rMLU\"",
   "id": "z12egnvgnxubg1fcz23njpizuseusp52v",
   "snippet": {
    "videoId": "1nFywcC37i0",
    "topLevelComment": {
     "kind": "youtube#comment",
     "etag": "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/Qo_wbi2gLLivL4wxv762XrTrOTc\"",
     "id": "z12egnvgnxubg1fcz23njpizuseusp52v",
     "snippet": {
      "authorDisplayName": "speeedskater",
      "authorProfileImageUrl": "https://lh6.googleusercontent.com/-vfRKsopq1lU/AAAAAAAAAAI/AAAAAAAAABM/L0ASWMo0cAg/photo.jpg?sz=50",
      "authorChannelUrl": "http://www.youtube.com/channel/UCsb8wbZeHZTta_yZ_YN1mag",
      "authorChannelId": {
       "value": "UCsb8wbZeHZTta_yZ_YN1mag"
      },
      "videoId": "1nFywcC37i0",
      "textDisplay": "",
      "authorGoogleplusProfileUrl": "https://plus.google.com/113292370824207410602",
      "canRate": false,
      "viewerRating": "none",
      "likeCount": 0,
      "publishedAt": "2015-12-03T05:25:02.538Z",
      "updatedAt": "2015-12-03T05:25:02.538Z"
     }
    },
    "canReply": false,
    "totalReplyCount": 0,
    "isPublic": true
   }
  },
  ...

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这似乎是最近的一个bug；我将在上关注报告，并实施暂时将textFormat用作纯文本的解决方法。

如果需要使用textFormat html，您可以通过请求注释列表来接收注释。将筛选器id设置为commentThreads列表响应中找到的topLevelComment的id

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有几个bug报告似乎与此问题（以及时间）相匹配。例如#7969。解决方法似乎是将textFormat用作纯文本，但这显然并不理想！