如何在Web API控制器中获取基本URL？

Question

我知道我可以Url.Link()用来获取特定路由的URL,但是如何在Web API控制器中获取Web API基本URL？

Answer 1

在对url" http:// localhost:85458/api/ctrl / " 的请求的action方法中

var baseUrl = Request.RequestUri.GetLeftPart(UriPartial.Authority) ;

这将得到你 http:// localhost:85458

Answer 2

你可以使用()的VirtualPathRoot属性HttpRequestContextrequest.GetRequestContext().VirtualPathRoot

Answer 3

Url.Content("~/")

为我工作!

Answer 4

这是我使用的:

Uri baseUri = new Uri(Request.RequestUri.AbsoluteUri.Replace(Request.RequestUri.PathAndQuery, String.Empty));

然后,当我将它与另一个相对路径组合时,我使用以下内容:

string resourceRelative = "~/images/myImage.jpg";
Uri resourceFullPath = new Uri(baseUri, VirtualPathUtility.ToAbsolute(resourceRelative));

Answer 5

我将此服务注入我的控制器.

 public class LinkFactory : ILinkFactory
 {
    private readonly HttpRequestMessage _requestMessage;
    private readonly string _virtualPathRoot;


    public LinkFactory(HttpRequestMessage requestMessage)
    {
        _requestMessage = requestMessage;
        var configuration = _requestMessage.Properties[HttpPropertyKeys.HttpConfigurationKey] as HttpConfiguration;
        _virtualPathRoot = configuration.VirtualPathRoot;
        if (!_virtualPathRoot.EndsWith("/"))
        {
            _virtualPathRoot += "/";
        }
    }

    public Uri ResolveApplicationUri(Uri relativeUri)
    {

        return new Uri(new Uri(new Uri(_requestMessage.RequestUri.GetLeftPart(UriPartial.Authority)), _virtualPathRoot), relativeUri);
    }

}

Answer 6

在 .NET Core WebAPI（3.0 及以上版本）中：

var requestUrl = $"{Request.Scheme}://{Request.Host.Value}/";


     

Answer 7

使用Url帮助程序类中的以下代码段

Url.Link("DefaultApi", new { controller = "Person", id = person.Id })

完整的文章可在此处获取:http: //blogs.msdn.com/b/roncain/archive/2012/07/17/using-the-asp-net-web-api-urlhelper.aspx

这是官方的方式,不需要任何帮助或解决方法.如果你看一下这种方法就像ASP.NET MVC

Answer 8

new Uri(Request.RequestUri, RequestContext.VirtualPathRoot)