Regex解析Youtube url与CSV视频ID

本文关键字：CSV 视频 ID url 解析 Youtube Regex | 更新日期: 2023-09-27 18:03:17

我试图抓取以逗号分隔格式的YouTube视频id。

url: http://www.youtube.com/watch?v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io

期望输出:

ClcKC_U_7fM, ujmoYyEyDP8, cwRFjWdxeRQ, Z4BKV121mP4, T241s7O7-Io

I tried following 

Regex regexPattern = new Regex(@"""[^""'r'n]*""|'[^''r'n]*'|[^,'r'n]*");
    Match matchResults = regexPattern.Match(url);
    while (matchResults.Success) 
    {
        Console.WriteLine(matchResults.Value);
        matchResults = matchResults.NextMatch();
    }

输出
http://www.youtube.com/watch?v=ClcKC_U_7fM
ujmoYyEyDP8
cwRFjWdxeRQ
Z4BKV121mP4
T241s7O7-Io

我尝试了其他方法

 var regex = new Regex(@"(?:.+?)?(?:''/v''/|watch''/|''?v=|''&v=|youtu''.be''/|''/v=|^youtu''.be''/)([a-zA-Z0-9_-]{11})+");
            foreach (Match match in regex.Matches(url))
            {
                //Console.WriteLine(match);
                foreach (var groupdata in match.Groups.Cast<Group>().Where(groupdata => !groupdata.ToString().StartsWith("http://") && !groupdata.ToString().StartsWith("https://") && !groupdata.ToString().StartsWith("youtu") && !groupdata.ToString().StartsWith("www.")))
                {
                    groupdata.ToString();
                    Console.WriteLine(groupdata.ToString());
                }
            }

输出
ClcKC_U_7fM

对得到以下结果有什么想法吗?

ClcKC_U_7fM, ujmoYyEyDP8, cwRFjWdxeRQ, Z4BKV121mP4, T241s7O7-Io

更新

我忘了提到各种url模式

1) http://www.youtube.com/watch?v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io
2) http://www.youtube.com/embed/watch?feature=player_embedded&v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io
3) http://www.youtube.com/watch?v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io&feature=related

谢谢

Regex解析Youtube url与CSV视频ID

使用OP发布的原始代码，将以下代码替换为正则表达式(?<=(v=)|,)[^(,|&)]* 

string url = "http://www.youtube.com/watch?v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io";
Regex regexPattern = new Regex("(?<=(v=)|,)[^(,|&)]*");
Match matchResults = regexPattern.Match(url);
while (matchResults.Success)
{
    Console.WriteLine(matchResults.Value);
    matchResults = matchResults.NextMatch();
}
输出:

ClcKC_U_7fM
ujmoYyEyDP8
cwRFjWdxeRQ
Z4BKV121mP4
T241s7O7-Io

如果您先在=符号处分割url，然后使用简单的字符串分割，可能会更容易。

string url = "http://www.youtube.com/embed/watch?feature=player_embedded&v=ClcKC_U_7fM,ujmoYyEyDP8,cwRFjWdxeRQ,Z4BKV121mP4,T241s7O7-Io";
string[] s1 = url.Split('?');
string[] queries = s1[1].Split('&');
foreach (string query in queries)
{
    if (query.ToLower().StartsWith("v="))
    {
        string[] s2 = query.Split('=');
        string[] s3 = s2[1].Split(',');
        foreach (string s in s3)
        {
            Console.WriteLine(s);
        }
        break;
    }
}
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