识别URL的正则表达式 [英] Regular expression for recognizing url

问题描述

我想，以获得从输入字符串的所有链接创建一个正则表达式的URL。
正则表达式应该认识到的URL地址的格式如下：

• HTTP（S）：//www.webpage.com


• HTTP（S）：//webpage.com


• www.webpage.com

和还更复杂的网址，如：
- http://www.google.pl/#sclient=psy&hl=pl&site=&source = HP&安培; q =正则表达式+网址&安培; PBX = 1&安培; OQ =正则表达式+网址&安培; AQ = F&放大器;空气质量指数= G1&安培; AQL =安培; gs_sm = E&安培; gs_upl = 1582l3020l0l3199l9l6l0l0l0l0l255l1104l0.2.3l5l0&安培; BAV = on.2，或。 。r_gc.r_pw&安培; FP = 30a1604d4180f481&安培;白车身= 1680&安培;波黑= 935

我有以下有一个

 （（www\ | HTTPS | FTP |鼠|远程登录|档案|注意事项| MS-HELP）：（（//）|（\\\ \\\\））+ [\w\d：？＃@％/; $（）〜_ \ +  -  = \\\&放大器;] *）
  

但它不能识别以下模式：www.webpage.com。 ？是否有人可以帮助我建立一个适当的正则表达式

编辑：
它应该致力于找到一个适当的链接，此外地方在这样一个适当的索引链接：

 私人只读正则表达式RE_URL =新的正则表达式（@（（HTTPS | FTP |地鼠|远程登录|档案|注意事项| MS-帮助）：（（//）|（\\\\））+ [\w\d：＃@％/; $（）〜_？ \ +  -  = \\\&放大器;] *），RegexOptions.Multiline）; 
的foreach（赛比赛中（RE_URL.Matches（新文本）））
 {
 //从最后一个位置复制原始字符串到比赛
如果（match.Index！ = last_pos）
 {
 VAR raw_text = new_text.Substring（last_pos，match.Index  -  last_pos）; 
 text_block.Inlines.Add（新润（raw_text））; 
} 
 
 //创建匹配
无功链接一个超链接=新的超链接（新润（match.Value））
 {
 NavigateUri =新的URI（match.Value）
}; 
 link.Click + = OnUrlClick; 
 
 text_block.Inlines.Add（链接）; 
 
 //更新最后匹配位置
 last_pos = match.Index + match.Length; 
} 
  

解决方案

我刚刚写了一个博客帖子上承认在最常用格式的URL，如：

www.google.com
http://www.google.com
至mailto：[e-mail]
[e-mail]
www.url-with-querystring.com/?url=has-querystring

使用正则表达式是 /（（（[A-ZA-Z] {3,9} :(？：\ / ？？？？\ /））（： - ;：&安培; = \ \ + $，\w] + @）[A-ZA-Z0-9 .-] + |（：WWW | [ - ;：&安培; = \ \ + $，\w] + @）[A-ZA-Z0-9 .-] +）（（？：\ / [\ +〜％\ / .\w -_] *）\ ??（： - \ + =放;;％@ \w _] *）＃（？：？？？？[\w] *））） / 不过，我会建议你得的 http://blog.mattheworiordan.com/post/13174566389/url-regular-expression-for-links-with-or-without-the 沿看到一个完整的工作示例在情况下，你需要扩展或调整它的正则表达式的说明。

I want to create a Regex for url in order to get all links from input string. The Regex should recognize the following formats of the url address:

• http(s)://www.webpage.com
• http(s)://webpage.com
• www.webpage.com

and also the more complicated urls like: - http://www.google.pl/#sclient=psy&hl=pl&site=&source=hp&q=regex+url&pbx=1&oq=regex+url&aq=f&aqi=g1&aql=&gs_sm=e&gs_upl=1582l3020l0l3199l9l6l0l0l0l0l255l1104l0.2.3l5l0&bav=on.2,or.r_gc.r_pw.&fp=30a1604d4180f481&biw=1680&bih=935

I have the following one

((www\.|https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))+[\w\d:#@%/;$()~_?\+-=\\\.&]*)

but it does not recognize the following pattern: www.webpage.com. Can someone please help me to create an appropriate Regex?

EDIT: It should works to find an appropriate link and moreover place a link in an appropriate index like this:

private readonly Regex RE_URL = new Regex(@"((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))+[\w\d:#@%/;$()~_?\+-=\\\.&]*)", RegexOptions.Multiline);
foreach (Match match in (RE_URL.Matches(new_text)))
            {
                // Copy raw string from the last position up to the match
                if (match.Index != last_pos)
                {
                    var raw_text = new_text.Substring(last_pos, match.Index - last_pos);
                    text_block.Inlines.Add(new Run(raw_text));
                }

                // Create a hyperlink for the match
                var link = new Hyperlink(new Run(match.Value))
                {
                    NavigateUri = new Uri(match.Value)
                };
                link.Click += OnUrlClick;

                text_block.Inlines.Add(link);

                // Update the last matched position
                last_pos = match.Index + match.Length;
            }

解决方案

I've just written up a blog post on recognising URLs in most used formats such as:

www.google.com http://www.google.com mailto:[e-mail] [e-mail] www.url-with-querystring.com/?url=has-querystring

The regular expression used is /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)/ however I would recommend you got to http://blog.mattheworiordan.com/post/13174566389/url-regular-expression-for-links-with-or-without-the to see a complete working example along with an explanation of the regular expression in case you need to extend or tweak it.

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