如何在signalR HubClass中使用UrlHelper [英] How use UrlHelper in signalR HubClass

问题描述

我有一个由Hub驱动的Chat类. 我想知道是否有一种通过URLHelper构建URL的方法，例如:Url.Action("action"，"Controller").

I have a Chat class drived from Hub. I want to know if thers a way to built URL by URLHelper like : Url.Action("action","Controller").

因为我可以从2个抽象类(集线器，控制器)派生该类，所以我不知道是否有其他方法来构建完整的URls而不是Hard代码.

as i can derived the class from 2 abstract classes (Hub, Controller) i dont know if thers other way to build complete URls and not Hard code.

推荐答案

我目前在我的Hub中使用此代码，我敢肯定有更好的方法来做到这一点，但这是可行的.

I use this code in my Hub currently, I'm sure there is a better way to do this, but this works.

注意:如果要使用完全限定的网址，请确保正确设置了域(example.com).

Note: If you want a a fully qualified url, make sure you set the domain correctly (example.com).

protected virtual UrlHelper Url
{
    get
    {
        var httpContext = HttpContext.Current;

        if (httpContext == null)
        {
            var request = new HttpRequest("/", "http://example.com", "");
            var response = new HttpResponse(new StringWriter());
            httpContext = new HttpContext(request, response);
        }

        var httpContextBase = new HttpContextWrapper(httpContext);
        var routeData = new RouteData();
        var requestContext = new RequestContext(httpContextBase, routeData);

        return new UrlHelper(requestContext);
    }
}

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