如何将相对URL转换为完整URL？

Question

用一个例子可以更容易地解释这一点.我正试图找到一种方法将相对URL,例如"/Foo.aspx"或"〜/ Foo.aspx"转换为完整的URL,例如http://localhost/Foo.aspx.这样,当我部署到测试或阶段时,网站运行的域名不同,我将获得http://test/Foo.aspx和http://stage/Foo.aspx.

有任何想法吗？

Answer 1

玩这个(从这里修改)

public string ConvertRelativeUrlToAbsoluteUrl(string relativeUrl) {
    return string.Format("http{0}://{1}{2}",
        (Request.IsSecureConnection) ? "s" : "", 
        Request.Url.Host,
        Page.ResolveUrl(relativeUrl)
    );
}

Answer 2

这个被击败了,但我想我会发布自己的解决方案,我认为它比许多其他答案更清晰.

public static string AbsoluteAction(this UrlHelper url, string actionName, string controllerName, object routeValues)
{
    return url.Action(actionName, controllerName, routeValues, url.RequestContext.HttpContext.Request.Url.Scheme);
}

public static string AbsoluteContent(this UrlHelper url, string path)
{
    Uri uri = new Uri(path, UriKind.RelativeOrAbsolute);

    //If the URI is not already absolute, rebuild it based on the current request.
    if (!uri.IsAbsoluteUri)
    {
        Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
        UriBuilder builder = new UriBuilder(requestUrl.Scheme, requestUrl.Host, requestUrl.Port);

        builder.Path = VirtualPathUtility.ToAbsolute(path);
        uri = builder.Uri;
    }

    return uri.ToString();
}

Answer 3

你只需要使用它创建一个新的URI page.request.url然后得到AbsoluteUri它:

New System.Uri(Page.Request.Url, "Foo.aspx").AbsoluteUri

Answer 4

这是我的帮手功能

public string GetFullUrl(string relativeUrl) {
    string root = Request.Url.GetLeftPart(UriPartial.Authority);
    return root + Page.ResolveUrl("~/" + relativeUrl) ;
}