问题
I've been using the following method to retrieve all video IDs, titles, and default thumbnail images contained within a specific YouTube playlist for use in a dynamic playlist carousel (The IDs are then passed to an array which is used to dynamically create a thumbnail carousel. Note the 'playlist' variable is defined via an externalized XML value):
// 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 has depricated the v1-2 APIs and the method is longer working. Does the YouTube API v3 provide an equivalent method? Specifically replacing the call:
var playListURL = 'http://gdata.youtube.com/feeds/api/playlists/' + playlist + '?v=2&alt=json&callback=?';
回答1:
You will need to switch to the new PlaylistItems/list endpoint to get video information from a playlist.
Request:
HTTP GET: GET https://www.googleapis.com/youtube/v3/playlistItems?part=snippet%2C+id&playlistId=PLCJLiJ8uSJrCpxwz4lmnz1NvvF2SzXbhk&key={YOUR_API_KEY}
Response (for 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 value for each object in the items array should be the videoId value that you want.
来源：https://stackoverflow.com/questions/30653208/retrieve-video-ids-contained-in-a-playlist-youtube-api-v3