从URI中删除子域
本文关键字:删除 URI | 更新日期: 2023-09-27 18:27:03
我想从URI中删除子域名称。
示例:我想从Uri"sub2.baseurl.com子域"返回'baseurl.com'。
有没有一种使用URI类实现这一点的方法,或者Regex是唯一的解决方案?
谢谢。
这应该可以完成:
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;
}