通过 Spotify API 获取封面艺术

Question

我正在尝试使用 Spotify API 来从他们的响应中提取封面艺术 URL。在这个例子中，我试图从迈克尔杰克逊的“Billie Jean”中获取封面艺术。这似乎很简单，但我根本不是专家 - 我只是在玩弄看看我能不能解决这个问题。

访问以下网址：

https://embed.spotify.com/oembed/?url=spotify:track:5ChkMS8OtdzJeqyybCc9R5&format=json&callback=spotify

返回以下 JSON 响应：

  spotify({"provider_url":"https:\/\/www.spotify.com","version":"1.0","thumbnail_width":300,"height":380,"thumbnail_height":300,"title":"Michael Jackson - Billie Jean - Single Version","width":300,"thumbnail_url":"https:\/\/d3rt1990lpmkn.cloudfront.net\/cover\/e337f3661f68bc4d96a554de0ad7988d65edb25a","provider_name":"Spotify","type":"rich","html":"<iframe src=\"https:\/\/embed.spotify.com\/?uri=spotify:track:5ChkMS8OtdzJeqyybCc9R5\" width=\"300\" height=\"380\" frameborder=\"0\" allowtransparency=\"true\"><\/iframe>"});

我要做的是让 PHP 脚本提取 thumbnail_url 并在文档中回显它。但是，我只收到错误消息。谁能帮助我，并指出我做错了什么？

到目前为止，这是我的脚本：

<?php
$track = "spotify:track:5ChkMS8OtdzJeqyybCc9R5";
$url = "https://embed.spotify.com/oembed/?url=".$track."&format=json&callback=spotify";
$get_data  = file_get_contents($url);
$get_json  = json_decode($get_data);

$cover = $get_json->spotify->thumbnail_url;

echo $cover;
?>

Answer 1

file_get_contents 不起作用的原因是，如果您启用错误报告，您将看到错误：

警告：file_get_contents() [function.file-get-contents]：无法 找到包装器“https” - 您是否忘记启用它 配置PHP？

See answers related to that error here.

因此，无需摆弄 PHP 的最简单的解决方案是使用 cURL 代替 将 CURLOPT_SSL_VERIFYHOST 和 CURLOPT_SSL_VERIFYPEER 属性设置为 false。

所以代码是： See in action!

<?php
$track = "spotify:track:5ChkMS8OtdzJeqyybCc9R5";
$url = "https://embed.spotify.com/oembed/?url=".$track."&format=json";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; curl)");
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$json = curl_exec($ch);
curl_close($ch);

$json  = json_decode($json);

$cover = $json->thumbnail_url;

//https://d3rt1990lpmkn.cloudfront.net/cover/e337f3661f68bc4d96a554de0ad7988d65edb25a
echo $cover;

//Debug - Complete response
echo '<pre>'.print_r($json, true).'</pre>';
/*
stdClass Object
(
    [provider_url] => https://www.spotify.com
    [version] => 1.0
    [thumbnail_width] => 300
    [height] => 380
    [thumbnail_height] => 300
    [title] => Michael Jackson - Billie Jean - Single Version
    [width] => 300
    [thumbnail_url] => https://d3rt1990lpmkn.cloudfront.net/cover/d45aa25bbd45872c0b1e97223af57fe94588820a
    [provider_name] => Spotify
    [type] => rich
    [html] => 
)
*/

Answer 2

看起来您需要设置一个用户代理，而不是 100%，因为我没有检查文档，但是使用 CURL 设置一个用户代理可以让我接收数据。请尝试以下操作：

<?php
$track = "spotify:track:5ChkMS8OtdzJeqyybCc9R5";
$url = "https://embed.spotify.com/oembed/?url=".$track."&format=json";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:x.x.x) Gecko/20041107 Firefox/x.x");
$output = curl_exec($ch);
curl_close($ch);

$get_json  = json_decode($output);
$cover     = $get_json->thumbnail_url;
echo $cover;

使用 CURL 可以更精细地处理您的请求。在这个例子中，我们设置了一个用户代理。

Answer 3

这就是我在 Python 中的做法，这对我来说效果很好。我看到的主要区别是网址中的&callback=，在我写这篇文章的时候似乎是必需的。

import requests
def getArt(spTrackURL,x=False):
    """
        Takes a uri to a spotify track
        -> Use uri to query Spotify web service for album art path
        -> modify art path to produce 300 px image (larger than default, no logo) 
        -> return art path as string
    """
    if (not x):
        log("getArt","for '" + spTrackURL + "' -> Getting cover art from Spotify")
    spEmbedUrl = 'https://embed.spotify.com/oembed/?url=' + spTrackURL + '&callback=?'
    try:
        r = requests.get(spEmbedUrl)
        while (r.text == ''):
            time.sleep(1)
        t = r.text.split(',')
        for i in t:
            if (i.find('thumbnail_url') != -1):
                t = i
        t = t.replace('"thumbnail_url":"','').replace('"', '').replace('\\','').replace('cover','300')
        #print t
    except:
        t = ''
        #print 'something bad happened when getting art, trying again'
        t = getArt(spTrackURL, True)
    return t