目的是使用 YouTube API 创建一个稍后观看按钮。当用户单击按钮时，视频将保存到用户的“稍后观看”播放列表中。类似于在您自己的网站上实现 Facebook 赞按钮时的工作方式。
到目前为止，我们在 API 文档中有两个官方条目：
我们在 API 文档中有许多 PHP code samples。
如何使用 PHP 或/和 javascript 来实现？
【问题讨论】：
标签： javascript php video youtube youtube-api
正在检索“稍后观看”播放列表：
正如其他人指出的那样，YouTube 不再允许这样做
将视频添加到同一个列表中非常简单：
curl --request POST \
'https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&key=[YOUR_API_KEY]' \
--header 'Authorization: Bearer [YOUR_ACCESS_TOKEN]' \
--header 'Accept: application/json' \
--header 'Content-Type: application/json' \
--data '{"snippet":{"playlistId":"WL","position":0,"resourceId":{"kind":"youtube#video","videoId":"M7FIvfx5J10"}}}' \
--compressed
您可以在此处找到 Javascript 代码 sn-p 等：https://developers.google.com/youtube/v3/docs/playlistItems/insert
【讨论】：
稍后观看播放列表是 ID 为 WL 的播放列表。您可以像添加其他 Youtube 播放列表一样向该播放列表添加视频。
您首先需要转到您的Google developer console：
Oauth Client ID
然后您可以使用下面的代码进行身份验证，检索具有https://www.googleapis.com/auth/youtube 范围的访问令牌，然后将视频添加到您稍后观看的播放列表中。
对于以下 Javascript 和 PHP 示例，当按下按钮时，如果尚未经过身份验证，它会登录用户并将视频添加到经过身份验证的用户的稍后观看播放列表中。
这是基于 Google here 提供的 api-samples。
Here 是带有source code 的现场演示（如下）
Here 是一个小提琴。替换您的客户端 ID 并在开发者控制台中添加为授权的 JavaScript 来源：https://fiddle.jshell.net
<!doctype html>
<html>
<head>
<title>Add to Watch Later playlist</title>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<style>
.btn-tech {
color: #2c3e50;
border: solid 2px #2c3e50;
background: transparent;
transition: all 0.3s ease-in-out;
margin: 20px;
border-radius: 20% 20% 20% 20%;
}
.btn-tech:hover,
.btn-tech:active,
.btn-tech.active {
color: #FFFFFF;
background: #2c3e50;
cursor: pointer;
}
</style>
</head>
<body>
<div id="watch_later">
<div id="buttons">
<label>Enter Video ID you want to add to Watch Later playlist :
<input id="video-id" value='T4ZE2KtoFzs' type="text" />
</label>
</div>
<div class="like">
<a id="fb-link">
<span class="btn-tech fa-stack fa-3x">
<i class="fa fa-thumbs-up fa-stack-1x"></i>
</span>
</a>
</div>
<div id="playlist-container">
<span id="status"></span>
</div>
<p>
<a href="https://www.youtube.com/playlist?list=WL">check your watch later playlist</a>
</p>
</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
var OAUTH2_CLIENT_ID = '28993181493-c9o6hdll3di0ssvebfd4atf13edqfu9g.apps.googleusercontent.com';
var OAUTH2_SCOPES = [
'https://www.googleapis.com/auth/youtube'
];
var init = false;
googleApiClientReady = function() {
gapi.auth.init(function() {
window.setTimeout(checkAuth, 1);
});
}
function checkAuth() {
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: true
}, handleAuthResult);
}
// Handle the result of a gapi.auth.authorize() call.
function handleAuthResult(authResult) {
$('.like').off('click');
$('.like').click(function(e) {
if (authResult && !authResult.error) {
addVideoToPlaylist();
} else {
init = true;
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: false
}, handleAuthResult);
}
return false;
});
if (authResult && !authResult.error) {
// Authorization was successful. Hide authorization prompts and show
// content that should be visible after authorization succeeds.
$('.pre-auth').hide();
$('.post-auth').show();
loadAPIClientInterfaces();
$('#add_to_wl').click(function(e) {
addVideoToPlaylist();
});
}
}
function loadAPIClientInterfaces() {
gapi.client.load('youtube', 'v3', function() {
if (init) {
init = false;
addVideoToPlaylist();
}
});
}
// Add a video ID specified in the form to the playlist.
function addVideoToPlaylist() {
addToPlaylist($('#video-id').val());
}
// Add a video to a playlist. The "startPos" and "endPos" values let you
// start and stop the video at specific times when the video is played as
// part of the playlist. However, these values are not set in this example.
function addToPlaylist(id, startPos, endPos) {
var details = {
videoId: id,
kind: 'youtube#video'
}
if (startPos != undefined) {
details['startAt'] = startPos;
}
if (endPos != undefined) {
details['endAt'] = endPos;
}
var request = gapi.client.youtube.playlistItems.insert({
part: 'snippet',
resource: {
snippet: {
playlistId: "WL",
resourceId: details
}
}
});
request.execute(function(response) {
console.log(response);
if (!response.code) {
$('#status').html('<pre>Succesfully added the video : ' + JSON.stringify(response.result) + '</pre>');
} else if (response.code == 409) {
$('#status').html('<p>Conflict : this video is already on your Watch Later playlist</p>');
} else if (response.code == 404) {
$('#status').html('<p>Not Found : this video hasnt been found</p>');
} else {
$('#status').html('<p>Error : code ' + response.code + '</p>');
}
});
}
</script>
<script src="https://apis.google.com/js/client.js?onload=googleApiClientReady"></script>
</body>
</html>
用您自己的客户 ID 替换 OAUTH2_CLIENT_ID
在 API 响应中，我检查以下状态代码：
409 : 该视频已在播放列表中404 : 找不到视频安装 google-api 客户端：
composer require google/apiclient:~2.0
php脚本watchlater.php：
<?php
/**
* Library Requirements
*
* 1. Install composer (https://getcomposer.org)
* 2. On the command line, change to this directory (api-samples/php)
* 3. Require the google/apiclient library
* $ composer require google/apiclient:~2.0
*/
if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
throw new \Exception('please run "composer require google/apiclient:~2.0" in "' . __DIR__ .'"');
}
require_once __DIR__ . '/vendor/autoload.php';
session_start();
$response = "";
/*
* You can acquire an OAuth 2.0 client ID and client secret from the
* {{ Google Cloud Console }} <{{ https://cloud.google.com/console }}>
* For more information about using OAuth 2.0 to access Google APIs, please see:
* <https://developers.google.com/youtube/v3/guides/authentication>
* Please ensure that you have enabled the YouTube Data API for your project.
*/
$OAUTH2_CLIENT_ID = 'YOUR_CLIENT_ID';
$OAUTH2_CLIENT_SECRET = 'YOUR_CLIENT_SECRET';
$client = new Google_Client();
$client->setClientId($OAUTH2_CLIENT_ID);
$client->setClientSecret($OAUTH2_CLIENT_SECRET);
$client->setScopes('https://www.googleapis.com/auth/youtube');
$redirect = filter_var('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'],
FILTER_SANITIZE_URL);
$client->setRedirectUri($redirect);
// Define an object that will be used to make all API requests.
$youtube = new Google_Service_YouTube($client);
// Check if an auth token exists for the required scopes
$tokenSessionKey = 'token-' . $client->prepareScopes();
if (isset($_GET['code'])) {
if (strval($_SESSION['state']) !== strval($_GET['state'])) {
die('The session state did not match.');
}
$client->authenticate($_GET['code']);
$_SESSION[$tokenSessionKey] = $client->getAccessToken();
header('Location: ' . $redirect);
}
if (isset($_SESSION[$tokenSessionKey])) {
$client->setAccessToken($_SESSION[$tokenSessionKey]);
}
// Check to ensure that the access token was successfully acquired.
if ($client->getAccessToken()) {
try {
$videoId = "";
if (isset($_GET['video'])){
$videoId = $_GET['video'];
}
else if(isset($_SESSION['video'])){
$videoId = $_SESSION['video'];
}
if(isset($videoId) && !isset($_GET['state'])) {
file_put_contents('php://stderr', print_r("adding video to watch later playlist " . $videoId . "\n", TRUE));
$playlistId = "WL";
// 5. Add a video to the playlist. First, define the resource being added
// to the playlist by setting its video ID and kind.
$resourceId = new Google_Service_YouTube_ResourceId();
$resourceId->setVideoId($videoId);
$resourceId->setKind('youtube#video');
// Then define a snippet for the playlist item. Set the playlist item's
// title if you want to display a different value than the title of the
// video being added. Add the resource ID and the playlist ID retrieved
// in step 4 to the snippet as well.
$playlistItemSnippet = new Google_Service_YouTube_PlaylistItemSnippet();
$playlistItemSnippet->setTitle('First video in the test playlist');
$playlistItemSnippet->setPlaylistId($playlistId);
$playlistItemSnippet->setResourceId($resourceId);
// Finally, create a playlistItem resource and add the snippet to the
// resource, then call the playlistItems.insert method to add the playlist
// item.
$playlistItem = new Google_Service_YouTube_PlaylistItem();
$playlistItem->setSnippet($playlistItemSnippet);
$playlistItemResponse = $youtube->playlistItems->insert(
'snippet,contentDetails', $playlistItem, array());
$response = json_encode($playlistItem);
$_SESSION['video'] = "";
}
else{
file_put_contents('php://stderr', print_r("no video was specified", TRUE));
}
} catch (Google_Service_Exception $e) {
$response = htmlspecialchars($e->getMessage());
} catch (Google_Exception $e) {
$response = htmlspecialchars($e->getMessage());
}
$_SESSION[$tokenSessionKey] = $client->getAccessToken();
} else {
if(isset($_GET['video'])){
$_SESSION["video"] = $_GET['video'];
// If the user hasn't authorized the app, initiate the OAuth flow
$state = mt_rand();
$client->setState($state);
$_SESSION['state'] = $state;
$authUrl = $client->createAuthUrl();
header('Location: ' . $authUrl);
}
}
?>
<!doctype html>
<html>
<head>
<title>Add to Watch Later playlist</title>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<style>
.btn-tech {
color: #2c3e50;
border: solid 2px #2c3e50;
background: transparent;
transition: all 0.3s ease-in-out;
margin: 20px;
border-radius: 20% 20% 20% 20%;
}
.btn-tech:hover,
.btn-tech:active,
.btn-tech.active {
color: #FFFFFF;
background: #2c3e50;
cursor: pointer;
}
</style>
</head>
<body>
<div id="watch_later">
<form id="form" action="watchlater.php"">
<label>Enter Video ID you want to add to Watch Later playlist :
<input id="video-id" name="video" value='T4ZE2KtoFzs' type="text" />
</label>
<div>
<span class="btn-tech fa-stack fa-3x" onclick="javascript:document.getElementById('form').submit();">
<i class="fa fa-thumbs-up fa-stack-1x"></i>
</span>
</div>
</form>
<div id="playlist-container">
<?php echo $response ?>
</div>
<p>
<a href="https://www.youtube.com/playlist?list=WL">check your watch later playlist</a>
</p>
</div>
</body>
</html>
将$OAUTH2_CLIENT_ID 和$OAUTH2_CLIENT_SECRET 替换为它们各自的值。另外，你必须在谷歌控制台设置一个redirect_uri，这里是http://localhost/watchlater.php
在PHP版本中，您可以看到我将视频ID存储在$_SESSION["video"]中，以便在google身份验证重定向到watchlater.php时能够立即添加它
这是该项目的 google 控制台Oauth Client ID 屏幕（适用于上述 Javascript 和 PHP 版本）：
请注意：
CLIENT_ID 并设置 Javascript OriginCLIENT_ID，CLIENT_SECRET，设置Javascript Origin并设置重定向URI测试注意，我注意到如果您想重新添加视频，手动删除视频可能需要一些时间
【讨论】：
videoId会在之后添加到播放列表中，然后可以添加更多视频而无需登录弹出窗口
Authorized redirect URIs 不需要，因为您不想在身份验证成功时将用户重定向到另一个页面。您必须使用基本 URI 指定一个 Authorized JavaScript origins，在我的情况下，https://bertrandmartel.github.io 是 this demo。对于上面的小提琴链接，您可以使用https://fiddle.jshell.net
我不知道这是否会对您有很大帮助，因为我从未使用过 Youtube 的 API。但是请查看this 回答，了解如何使用 Youtube 的 API v3 获取稍后观看的播放列表。
然后您可以查看来自 Youtube 文档的 this，用于将元素插入给定的播放列表。
无论如何我不确定这是否可行（你可以试一试），因为September 15, 2016 revision：
参考列表中的第2.2点：
频道资源的 contentDetails.relatedPlaylists.watchHistory 和 contentDetails.relatedPlaylists.watchLater 属性现在分别包含所有频道的 HL 和 WL 值。
需要明确的是，这些属性仅对检索有关用户自己频道的数据的授权用户可见。属性始终包含值 HL 和 WL，即使对于检索有关用户自己的频道的数据的授权用户也是如此。因此，无法通过 API 检索观看历史记录和稍后观看的播放列表 ID。
此外，为频道的观看历史记录或稍后观看的播放列表检索播放列表详细信息 (playlists.list) 或播放列表项 (playlistItems.list) 的请求现在返回空列表。此行为适用于新值 HL 和 WL，以及您的 API 客户端可能已存储的任何观看历史记录或稍后观看的播放列表 ID。
【讨论】：