检索播放列表中包含的视频 ID - YouTube API v3

我一直在使用以下方法来检索特定 YouTube 播放列表中包含的所有视频 ID、标题和默认缩略图，以便在动态播放列表轮播中使用（然后将 ID 传递到一个数组，该数组用于动态创建缩略图轮播。请注意，“播放列表”变量是通过外部化 XML 值定义的）：

// Get YouTube Playlist values
var playListURL = 'http://gdata.youtube.com/feeds/api/playlists/' + playlist + '?v=2&alt=json&callback=?';
var videoURL = 'http://www.youtube.com/watch?v=';
$.getJSON(playListURL, function(data) {
var list_data = "";
$.each(data.feed.entry, function(i, item) {
    var feedTitle = item.title.$t;
    var feedURL = item.link[1].href;
    var fragments = feedURL.split("/");
    var videoID = fragments[fragments.length - 2];
    var thumb = ""+ videoID +"/sddefault.jpg";
    if (videoID !='videos') {
        yt_videos.push(videoID);
    }
    yt_thumb.push(thumb);
    yt_title.push(feedTitle);
});
$(list_data).appendTo(".cont");
populateCarousel();
});

YouTube 已经废弃了 v1-2 API，并且该方法的工作时间更长。 YouTube API v3 是否提供等效方法？具体替换调用：

var playListURL = 'http://gdata.youtube.com/feeds/api/playlists/' + playlist + '?v=2&alt=json&callback=?';

您将需要切换到新的播放列表项目/列表 https://developers.google.com/youtube/v3/docs/playlistItems/list端点从播放列表获取视频信息。

Request:

HTTP GET: GET https://www.googleapis.com/youtube/v3/playlistItems?part=snippet%2C+id&playlistId=PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk&key={YOUR_API_KEY}

响应（对于id= PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk):

{
 "kind": "youtube#playlistItemListResponse",
 "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/pBQT3k1NWD9D6HOvzNhT4QS1-W0\"",
 "nextPageToken": "CAUQAA",
 "pageInfo": {
  "totalResults": 10,
  "resultsPerPage": 5
 },
 "items": [
  {

   "kind": "youtube#playlistItem",
   "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/wu_RMwA6QYinWSMrYXyOugKDbyI\"",
   "id": "PLl3eZeHB033DOxfNMOVENodvC_4QtQ-r2bxEjeNprDxQ",
   "snippet": {
    "publishedAt": "2014-12-10T21:16:39.000Z",
    "channelId": "UCVUx0VcNxnHx7ZjuZK5Sthw",
    "title": "Private video",
    "description": "This video is private.",
    "channelTitle": "Late Show with David Letterman",
    "playlistId": "PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk",
    "position": 0,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "4bVgilYncao"
    }
   }
  },
  {

   "kind": "youtube#playlistItem",
   "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/DPNyicQckvtlwgMTintYEwYsE6g\"",
   "id": "PLl3eZeHB033DOxfNMOVENoaZ-Ybk0W0zkTL1Sliq5xeA",
   "snippet": {
    "publishedAt": "2014-12-10T21:16:58.000Z",
    "channelId": "UCVUx0VcNxnHx7ZjuZK5Sthw",
    "title": "David Letterman Announces His Retirement from the Late Show",
    "description": "David Letterman announces that he will retire from the Late Show in 2015.\n\nLive on Letterman is up for a Webby award! Let your voice be heard and vote now! http://bit.ly/1l4oktE #WebbyAwards",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/H9eYkpgeeI8/default.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/H9eYkpgeeI8/mqdefault.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": "https://i.ytimg.com/vi/H9eYkpgeeI8/hqdefault.jpg",
      "width": 480,
      "height": 360
     },
     "standard": {
      "url": "https://i.ytimg.com/vi/H9eYkpgeeI8/sddefault.jpg",
      "width": 640,
      "height": 480
     },
     "maxres": {
      "url": "https://i.ytimg.com/vi/H9eYkpgeeI8/maxresdefault.jpg",
      "width": 1280,
      "height": 720
     }
    },
    "channelTitle": "Late Show with David Letterman",
    "playlistId": "PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk",
    "position": 1,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "H9eYkpgeeI8"
    }
   }
  },
  {

   "kind": "youtube#playlistItem",
   "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/aL6XWPV0PoM50wQcyclAxsvtWy4\"",
   "id": "PLl3eZeHB033DOxfNMOVENobu4IxNcwxZw1eEEoLqHjhY",
   "snippet": {
    "publishedAt": "2014-12-10T21:17:14.000Z",
    "channelId": "UCVUx0VcNxnHx7ZjuZK5Sthw",
    "title": "Private video",
    "description": "This video is private.",
    "channelTitle": "Late Show with David Letterman",
    "playlistId": "PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk",
    "position": 2,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "ONgN2Hgz3XE"
    }
   }
  },
  {

   "kind": "youtube#playlistItem",
   "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/YF1JYH8bTG20vjuPLeMR-2xkxjo\"",
   "id": "PLl3eZeHB033DOxfNMOVENoQncF7sXo86YALoy5U4yqlU",
   "snippet": {
    "publishedAt": "2014-12-10T21:17:30.000Z",
    "channelId": "UCVUx0VcNxnHx7ZjuZK5Sthw",
    "title": "David Letterman - Future Islands: \"Seasons (Waiting On You)\"",
    "description": "Making their network TV debut, Future Islands performed \"Seasons (Waiting On You)\" from their album, \"Singles.\"",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/1Ee4bfu_t3c/default.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/1Ee4bfu_t3c/mqdefault.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": "https://i.ytimg.com/vi/1Ee4bfu_t3c/hqdefault.jpg",
      "width": 480,
      "height": 360
     }
    },
    "channelTitle": "Late Show with David Letterman",
    "playlistId": "PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk",
    "position": 3,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "1Ee4bfu_t3c"
    }
   }
  },
  {

   "kind": "youtube#playlistItem",
   "etag": "\"dhbhlDw5j8dK10GxeV_UG6RSReM/_Ft_7ujRwQbP7-altelmVnzwQx0\"",
   "id": "PLl3eZeHB033DOxfNMOVENoYQ9Z55P4r2KhvkV5yx-okc",
   "snippet": {
    "publishedAt": "2014-12-10T21:17:47.000Z",
    "channelId": "UCVUx0VcNxnHx7ZjuZK5Sthw",
    "title": "Private video",
    "description": "This video is private.",
    "channelTitle": "Late Show with David Letterman",
    "playlistId": "PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk",
    "position": 4,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "Bzr5VtFvSyw"
    }
   }
  }
 ]
}

The id中每个对象的值items数组应该是videoId您想要的值。