Android Jsoup 从所选元素获取 YouTube 视频 ID

Question

RSS 字符串：

<description>
<a href="https://www.facebook.com/l.php?u=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%39s2zWNZydiI&amp;h=aAQEbhn3&amp;s=1" id="" title="" target="" onclick="LinkshimAsyncLink.referrer_log(this, &quot;https:\/\/www.youtube.com\/watch?v=9s2zNZydiI&quot;, and so on ....... "> 
</description>

Android 解析器代码：

Element imgElement = docHtml.select("a").first();
                    if (imgElement != null) {


                        IDContent = imgElement2.attr("onclick");

                    }

问题：

如何获取 "watch?v=" 和“;”之间的 Youtube ID

Answer 1

使用URLDecoder解码url字符串。

然后使用正则表达式从url

中提取VideoID

public static String getYoutubeVideoId(String youtubeUrl){
  String video_id="";
  if (youtubeUrl != null && youtubeUrl.trim().length() > 0 &&  youtubeUrl.startsWith("http")){ 
    String expression = "^.*((youtu.be"+ "\/)" + "|(v\/)|(\/u\/w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*"; // var  regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
    CharSequence input = youtubeUrl;
    Pattern pattern = Pattern.compile(expression,Pattern.CASE_INSENSITIVE);
    Matcher matcher = pattern.matcher(input);
    if (matcher.matches()){
      String groupIndex1 = matcher.group(7);
      if(groupIndex1!=null && groupIndex1.length()==11)
        video_id = groupIndex1;
     }
   }
  return video_id;
}

Android Jsoup 从所选元素获取 YouTube 视频 ID

Android Jsoup get a YouTubeVideo ID form an selected Element

android

jsoup

element