如何使用java从URL获取youtube视频ID？

Question

我想用java从youtube的URL获取v = id

示例Youtube URL格式:

http://www.youtube.com/watch?v=u8nQa1cJyX8&a=GxdCwVVULXctT2lYDEPllDR0LRTutYfW http://www.youtube.com/watch?v=u8nQa1cJyX8 http://youtu.be/0zM3nApSvMg http://www.youtube.com/user/IngridMichaelsonVEVO#p/a/u/1/KdwsulMb8EQ http://youtu.be/dQw4w9WgXcQ http://www.youtube.com/embed/dQw4w9WgXcQ http://www.youtube.com/v/dQw4w9WgXcQ http ://www.youtube.com/e/dQw4w9WgXcQ http://www.youtube.com/watch?v=dQw4w9WgXcQ http://www.youtube.com/?v=dQw4w9WgXcQ http://www.youtube.com/watch？feature = player_embedded&v = dQw4w9WgXcQ http://www.youtube.com/?feature=player_embedded&v=dQw4w9WgXcQ http://www.youtube.com/user/IngridMichaelsonVEVO#p/u/11/KdwsulMb8EQ http:// www .youtube-nocookie.com/v/6L3ZvIMwZFM？版本= 3&HL = EN_US&相对= 0

或任何其他youtube格式包含网址中的视频ID

我正在尝试: -

  Pattern compiledPattern = Pattern.compile("(?<=v=).*?(?=&|$)",Pattern.CASE_INSENSITIVE);      
        Matcher matcher = compiledPattern.matcher(sourceUrl);
        if(matcher.find()){
            setVideoId(matcher.group());
        }

它不仅适用于一个URL: -

http://youtu.be/6UW3xuJinEg

Answer 1

下面的代码将提取以下类型网址的视频ID.

http://www.youtube.com/watch?v=dQw4w9WgXcQ&a=GxdCwVVULXctT2lYDEPllDR0LRTutYfW
http://www.youtube.com/watch?v=dQw4w9WgXcQ 
http://youtu.be/dQw4w9WgXcQ 
http://www.youtube.com/embed/dQw4w9WgXcQ
http://www.youtube.com/v/dQw4w9WgXcQ 
http://www.youtube.com/e/dQw4w9WgXcQ
http://www.youtube.com/watch?v=dQw4w9WgXcQ
http://www.youtube.com/watch?feature=player_embedded&v=dQw4w9WgXcQ
http://www.youtube-nocookie.com/v/6L3ZvIMwZFM?version=3&hl=en_US&rel=0

String pattern = "(?<=watch\\?v=|/videos/|embed\\/|youtu.be\\/|\\/v\\/|\\/e\\/|watch\\?v%3D|watch\\?feature=player_embedded&v=|%2Fvideos%2F|embed%\u200C\u200B2F|youtu.be%2F|%2Fv%2F)[^#\\&\\?\\n]*";

        Pattern compiledPattern = Pattern.compile(pattern);
        Matcher matcher = compiledPattern.matcher(url); //url is youtube url for which you want to extract the id.
        if (matcher.find()) {
             return matcher.group();
        }

Answer 2

我找到了这个问题的解决方案..我扩展了该URL..及其工作..

public static String expandUrl(String shortenedUrl)  {
        URL url;
        String expandedURL = "";
        try {
            url = new URL(shortenedUrl);
            // open connection
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY); 
            // stop following browser redirect
            httpURLConnection.setInstanceFollowRedirects(false);
            // extract location header containing the actual destination URL
            expandedURL = httpURLConnection.getHeaderField("Location");
            httpURLConnection.disconnect();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }    
         return expandedURL;
    }