c# - 只获取 src 值

Question

我在数据库中有一个始终带有标签的字段。还有很多文字..

例如:

Hey there.. whats up?
<img src="http://cdn.theatlantic.com/static/infocus/ngpc112812/s_n01_nursingm.jpg" alt="" />
.. and this is my photo!..

我只需要得到

src

我试过了:

public string LinkPicCorrect(string path)
{
    //string input = "[img]http://imagesource.com[/img]";
    string pattern = @"\<img>([^\]]+)\\/>";
    string result = Regex.Replace(path, pattern, m =>
    {
        var url = m.Groups[1].Value;
        // do something with url here
        // return the replace value
        return @"<img src=""" + url + @""" border=""0"" />";
    },
        RegexOptions.IgnoreCase);

    result = "<img src='" + result + "'/>";

    return result;
}

但是我有一个解析错误:

Exception Details: System.ArgumentException: parsing "\([^]]+)\/>" - Reference to undefined group name img.

不知道我的代码是否是正确的路径...

Answer 1

这个问题已经有人问过here .

string matchString = Regex.Match(original_text, "<img.+?src=[\"'](.+?)[\"'].+?>", RegexOptions.IgnoreCase).Groups[1].Value;