c#之如何使此正则表达式正确匹配

鉴于此正则表达式：

^((https?|ftp):(\/{2}))?(((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]?))|(((([a-zA-Z0-9]+)(\.)*?))(\.)([a-z]{2} 
|com|org|net|gov|mil|biz|info|mobi|name|aero|jobs|museum){1}) 

重新格式化以提高可读性：

@"^((https?|ftp):(\/{2}))?" + // http://, https://, ftp:// - Protocol Optional 
@"(" + // Begin URL payload format section 
@"((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]?)" + // IPv4 Address support 
@")|("+ // Delimit supported payload types 
@"((([a-zA-Z0-9]+)(\.)*?))(\.)([a-z]{2}|com|org|net|gov|mil|biz|info|mobi|name|aero|jobs|museum){1}" + // FQDNs 
@")"; // End URL payload format section 

如何在此“失败”测试用例中使其失败（即不匹配）？

http://www.google

当我在TLD部分中指定{1}时，我认为如果没有扩展名它将失败。我错了吗？

编辑：这些是我的通过条件：


“ http://www.zi255.com?Req=Post&PID=4”，
“ http://www.zi255.com?Req=Post&ID=4”，
“ http://www.zi255.com/?Req=Post&PID=4”，
“ http://www.zi255.com?Req=Post&PostID=4”，
“ http://www.zi255.com/?Req=Post&ID=4”
“ http://www.zi255.com?Req=Post&Post=4”，
“ http://www.zi255.com?Req=Post&Entry=4”，
“ http://www.zi255.com?PID=4”
“ http://www.zi255.com/Post.aspx?Req=Post&ID=4”，
“ http://www.zi255.com/Post.aspx?Req=Post&PID=4”，
“ http://www.zi255.com/Post.aspx?Req=Post&Post=4”，
“ http://www.zi255.com/Post.aspx?Req=Post&Title=Random%20Post%20Name”
“ http://www.zi255.com/?Req=Post&Title=Random%20Post%20Name”，
“ http://www.zi255.com?Req=Post&Title=Random%20Post%20Name”，
“ http://www.zi255.com?Req=Post&PostID=4”，
“ http://www.zi255.com?Req=Post&Post=4”，
“ http://www.zi255.com?Req=Post&Entry=4”，
“ http://www.zi255.com?PID=4”
“ http://www.zi255.com”，
“ http://www.damnednice.com”


这些是我的失败条件：


“ http://.com”，
“ http://.com/”，
“ http：/www.google.com”，
“ http：/www.google.com/”，
“ http://www.google”，
“ http://www.googlecom”，
“ http://www.google.c”，
“ .com”，
“ https://www ...”

请您参考如下方法:

我会提出另一个建议。您可能需要结合使用内置的System.Uri类的解析和几个目标正则表达式（或在适当时进行简单的字符串检查）。

例：

string uriString = "..."; 
 
Uri uri; 
if (!Uri.TryCreate(uriString, UriKind.Absolute, out uri)) 
{ 
    // Uri is totally invalid! 
} 
else 
{ 
    // validate the scheme 
    if (!uri.Scheme.Equals("http", StringComparison.OrdinalIgnoreCase)) 
    { 
        // not http! 
    } 
 
    // validate the authority ('www.blah.com:1234' portion) 
    if (uri.Authority // ...) 
    { 
    } 
 
    // ... 
}