using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)
(?<protocol> (?<=^|[^a-z]) [a-z]+? : )
(?<domain> (?:[a-z\-]+\.)+[a-z\-]+ )
(?<ip> (?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?) )
(?<port> (?<!\s):\d+(?=\/|$|\s))
(?<pathquery>[A-Za-z\d\!\*\(\)\;\:\@\&\=\+\$\,\/\?\#\[\]\%\{\}\|\\\^\`\~]+)
(?<url> (?&protocol) (?: (?:\/\/) (?: (?&domain) | (?&ip) ) (?&port)? )? (?&pathquery))
)
(?&url)";
string input = @"http://en.wikipedia.org/wiki/A#CITEREFSimpsonWeiner1989里面找 以上URL
下载地址magnet:?xt=urn:btih:65F16B126D8A656E4FC825DE204EBFAF04B070FC里面找 以上URL
magnet:
net:
以下URLhttps://en.wikipedia.org/wiki/A#CITEREFSimpsonWeiner1989里面找 以上URL
http://192.168.1.1/里面找
'https://en.wikipedia.org/wiki/A/////#CITEREFSimpsonWeiner1989'
http://192.168.1.1:80/ 里面找
以下URL
https://google.com/search?q=%E5%9F%9F%E5%90%8D#newwindow=1&q=%E5%9F%9F%E5%90%8D+%E5%AD%97%E7%AC%A6
http://en.wikipedia.org/wiki/A#CITEREFSimpsonWeiner1989
magnet:?xt=urn:btih:65F16B126D8A656E4FC825DE204EBFAF04B070FC
https://en.wikipedia.org/wiki/A#CITEREFSimpsonWeiner1989
http://192.168.1.1/
https://en.wikipedia.org/wiki/A/////#CITEREFSimpsonWeiner1989
http://192.168.1.1:80/
https://google.com/search?q=%E5%9F%9F%E5%90%8D#newwindow=1&q=%E5%9F%9F%E5%90%8D+%E5%AD%97%E7%AC%A6
";
RegexOptions options = RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace | RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx