求一简单正则表达式,在线等到,马上给分

[king951789]

已经获取了一个页面的html代码的字符串形式,假高赋给变量strHtml,现在我想在strHtml中间截取一个字符串,该字符串在形如:http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swf的链接字符串中,其中2181918是一串不固定长度的随页面URL变化而变化的数字,XMTAwMjExNTI是一串不固定长度的随页面URL变化而变化的字符串,最终我想得到XMTAwMjExNTI这个串,请问应该怎么写一个正则表达式来达到目的?

[priwilliam]

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[Gangzai1983]

做人要厚道!!!!

[guyan033]

string str ="http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swf"

Regex reg = "http://www.tvgood.com/player.php/Type/Folder/Fid/\d*Ob/1/Pt/0/sid/(?<XMTname>.*)?=/v.swf";

太长了点

[conan304]

有什么规律没？
substring可以么？

[guyan033]

string str ="http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swf" ;
System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex ( "http://www.tvgood.com/player.php/Type/Folder/Fid/\\d*/Ob/1/Pt/0/sid/(?<XMTname>.*?)=/v.swf");
string XMTAwMjExNTI = reg.Match(str).Groups["XMTname"].ToString();

[wangkun9999]

"(?<=XMTAwMjExNTI=/)(\w+)(=\"|\s)"

[priwilliam]

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[ZengHD]

 string str = "23424http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swfFSFSFSDFSFSFSA";
            string strReg = "(?<url>http://.*?/v.swf)";

            Regex r = new Regex(strReg, RegexOptions.Multiline | RegexOptions.IgnoreCase);
            MatchCollection mc = r.Matches(str);
            foreach(Match m in mc)
            {
                MessageBox.Show(m.Groups["url"].Value);
            } 

[jinlibing110]

[Quote=引用 4 楼 conan304 的回复:]
有什么规律没？
substring可以么？
[/Quote]


顶，这个需要一个规则。不然没法做

[caibirdyb]

C# code

string strUrl = @"http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swf";
char[] cr = "//".ToCharArray();
string[] strs = new string[strUrl.Split(cr).Length ];
strs = strUrl.Split(cr);

[caibirdyb]

刚才没有把代码拷贝完全。
如果格式固定的化，可以用下面这段代码：最后一行就是需要的字符串
string strUrl = @"http://www.tvgood.com/player.php/Type/Folder/Fid/2181918/Ob/1/Pt/0/sid/XMTAwMjExNTI=/v.swf";
char[] cr = "//".ToCharArray();
string[] strs = new string[strUrl.Split(cr).Length ];
strs = strUrl.Split(cr);
strs[strs.Length-2].ToString();////需要的字符串