从 URI 中删除子域 [英] Remove subdomains from URI
本文介绍了从 URI 中删除子域的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想从 URI 中删除子域名.
I want to remove subdomain names from a URI.
示例:我想从 Uri "subdomain.sub2.baseurl.com" 返回 'baseurl.com'.
Example: I want to return 'baseurl.com' from the Uri "subdomain.sub2.baseurl.com".
有没有办法使用 URI 类来做到这一点,或者 Regex 是唯一的解决方案?
Is there a way of doing this using URI class or is Regex the only solution?
谢谢.
推荐答案
这应该可以搞定:
var tlds = new List<string>()
{
//the second- and third-level TLDs you expect go here, set to null if working with single-level TLDs only
"co.uk"
};
Uri request = new Uri("http://subdomain.domain.co.uk");
string host = request.Host;
string hostWithoutPrefix = null;
if (tlds != null)
{
foreach (var tld in tlds)
{
Regex regex = new Regex($"(?<=\\.|)\\w+\\.{tld}$");
Match match = regex.Match(host);
if (match.Success)
hostWithoutPrefix = match.Groups[0].Value;
}
}
//second/third levels not provided or not found -- try single-level
if (string.IsNullOrWhiteSpace(hostWithoutPrefix))
{
Regex regex = new Regex("(?<=\\.|)\\w+\\.\\w+$");
Match match = regex.Match(host);
if (match.Success)
hostWithoutPrefix = match.Groups[0].Value;
}
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