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我正在使用Url.RouteUrl("My_Route", new RouteValueDictionary(new { some = "value" }),"http","hostname"),现在我需要从 url 获取主机名,但只是顶级域。例如,我正在使用 ui.foo.local 运行我的网站,并且我需要将 url 路由到 foo.local。在 mvc 或 c# 中是否有内置的方法来执行此操作?

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1 回答 1

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我遇到了这个问题,并写了一个小域 Url 拆分器类,因为我找不到任何简单的方法来做到这一点。没有花太长时间,很高兴得到一些反馈。你像这样使用它:

var splitter = new DomainSplitter("http://stackoverflow.com");
var domain = splitter.DomainPart;

课程在这里:

public  class DomainSplitter {
    public string DomainPart { get; private set; }
    public string SubDomainPart { get; private set; }
    public string SchemePart { get; private set; }
    public string QueryPart { get; private set; }

    public DomainSplitter(string url) {

        if (string.IsNullOrEmpty(url)) {
            throw new Exception("urlString or expected sub domain were null or empty");
        }

        if (url.Contains("://")) {
            ShemePart = url.Split(':')[0] + "://";
            url = url.Remove(0, FirstPart.Length);
        }


        var endOfDomainIndex = url.IndexOfAny("?/".ToCharArray());
        if (endOfDomainIndex == -1) {
            endOfDomainIndex = url.Length;
        }

        int startOfDomainIndex;
        var domainStub = url.Substring(0, endOfDomainIndex);
        var noOfDots = domainStub.Length - domainStub.Replace(".", "").Length;
        switch (noOfDots) {
            case 0:
                startOfDomainIndex = 0;
                break;

            case 1:
                startOfDomainIndex = 0;
                if (url.Contains("localhost")) {
                    startOfDomainIndex = url.IndexOf(".") + 1;
                }
                break;

            default:
                startOfDomainIndex = url.IndexOf(".") + 1;
                break;
        }

        if (url.Contains("?")) {
            QueryPart = "?" + url.Split('?')[1];    
        }
        else {
            QueryPart = "";
        }

        SubDomainPart = startOfDomainIndex > 0 ? url.Substring(0, startOfDomainIndex - 1) : "";
        DomainPart = url.Substring(startOfDomainIndex, endOfDomainIndex - startOfDomainIndex);


    }
}
于 2012-09-10T19:49:46.517 回答