本文翻译自：Getting full URL of action in ASP.NET MVC [duplicate]

Is there a built-in way of getting the full URL of an action? 是否有内置的方法来获取操作的完整URL？

I am looking for something like GetFullUrl("Action", "Controller") that would return something like http://www.fred.com/Controller/Action . 我正在寻找像GetFullUrl("Action", "Controller")东西，它会返回像http://www.fred.com/Controller/Action 。

The reason I am looking for this is to avoid hardcoding URLs in automated emails that are generated so that the URLs can always be generated relative to the current location of the site. 我正在寻找这个的原因是为了避免在生成的自动电子邮件中硬编码URL，以便始终可以相对于站点的当前位置生成URL。

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#1楼

参考：https://stackoom.com/question/8Pgd/获取ASP-NET-MVC中的完整操作URL-重复

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#2楼

There is an overload of Url.Action that takes your desired protocol (eg http, https) as an argument - if you specify this, you get a fully qualified URL. Url.Action过载会将您所需的协议（例如http，https）作为参数 - 如果您指定此参数，则会获得完全限定的URL。

Here's an example that uses the protocol of the current request in an action method: 这是一个在动作方法中使用当前请求的协议的示例：

var fullUrl = this.Url.Action("Edit", "Posts", new { id = 5 }, this.Request.Url.Scheme);

HtmlHelper (@Html) also has an overload of the ActionLink method that you can use in razor to create an anchor element, but it also requires the hostName and fragment parameters. HtmlHelper（@Html）也有一个ActionLink方法的重载，您可以在razor中使用它来创建一个锚元素，但它还需要hostName和fragment参数。 So I'd just opt to use @Url.Action again: 所以我只是选择再次使用@ Url.Action：

<span>Copy<a href='@Url.Action("About", "Home", null, Request.Url.Scheme)'>this link</a> and post it anywhere on the internet!
</span>

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#3楼

This question is specific to ASP .NET however I am sure some of you will benefit of system agnostic javascript which is beneficial in many situations. 这个问题是ASP .NET特有的，但我相信你们中的一些人会受益于系统无关的javascript，这在很多情况下是有益的。

UPDATE: The way to get url formed outside of the page itself is well described in answers above. 更新：在上面的答案中很好地描述了在页面外部形成url的方法。

Or you could do a oneliner like following: 或者你可以做一个如下的oneliner：

new UrlHelper(actionExecutingContext.RequestContext).Action("SessionTimeout", "Home", new {area = string.Empty}, actionExecutingContext.Request.Url!= null? actionExecutingContext.Request.Url.Scheme : "http"
);

from filter or: 来自过滤器或：

new UrlHelper(this.Request.RequestContext).Action("Details", "Journey", new { area = productType }, this.Request.Url!= null? this.Request.Url.Scheme : "http"
);

However quite often one needs to get the url of current page, for those cases using Html.Action and putting he name and controller of page you are in to me feels awkward. 然而，通常需要获取当前页面的URL，因为对于那些使用Html.Action并且将他的名字和控制器放在我身上感觉很尴尬。 My preference in such cases is to use JavaScript instead. 在这种情况下，我的偏好是使用JavaScript代替。 This is especially good in systems that are half re-written MVT half web-forms half vb-script half God knows what - and to get URL of current page one needs to use different method every time. 这在半重写的系统中特别好。一半的网络形式一半vb-脚本一半上帝知道什么 - 并且要获得当前页面的URL每次需要使用不同的方法。

One way is to use JavaScript to get URL is window.location.href another - document.URL 一种方法是使用JavaScript获取URL，另一种是window.location.href - document.URL

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#4楼

This may be just me being really, really picky, but I like to only define constants once. 这可能只是我真的，​​非常挑剔，但我喜欢只定义一次常量。 If you use any of the approaches defined above, your action constant will be defines multiple times. 如果您使用上面定义的任何方法，您的动作常量将定义多次。

To avoid this, you can do the following: 为避免这种情况，您可以执行以下操作：

    public class Url{public string LocalUrl { get; }public Url(string localUrl){LocalUrl = localUrl;}public override string ToString(){return LocalUrl;}}public abstract class Controller{public Url RootAction => new Url(GetUrl());protected abstract string Root { get; }public Url BuildAction(string actionName){var localUrl = GetUrl() + "/" + actionName;return new Url(localUrl);}private string GetUrl(){if (Root == ""){return "";}return "/" + Root;}public override string ToString(){return GetUrl();}}

Then create your controllers, say for example the DataController: 然后创建你的控制器，例如DataController：

    public static readonly DataController Data = new DataController();public class DataController : Controller{public const string DogAction = "dog";public const string CatAction = "cat";public const string TurtleAction = "turtle";protected override string Root => "data";public Url Dog => BuildAction(DogAction);public Url Cat => BuildAction(CatAction);public Url Turtle => BuildAction(TurtleAction);}

Then just use it like: 然后就像使用它：

    // GET: Data/Cat[ActionName(ControllerRoutes.DataController.CatAction)]public ActionResult Etisys(){return View();}

And from your .cshtml (or any code) 从您的.cshtml（或任何代码）

<ul><li><a href="@ControllerRoutes.Data.Dog">Dog</a></li><li><a href="@ControllerRoutes.Data.Cat">Cat</a></li>
</ul>

This is definitely a lot more work, but I rest easy knowing compile time validation is on my side. 这肯定是更多的工作，但我很容易知道编译时验证在我身边。

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#5楼

这就是你需要做的。

@Url.Action(action,controller, null, Request.Url.Scheme)

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#6楼

I was having an issue with this, my server was running behind a load balancer. 我遇到了这个问题，我的服务器在负载均衡器后面运行。 The load balancer was terminating the SSL/TLS connection. 负载均衡器正在终止SSL / TLS连接。 It then passed the request to the web servers using http. 然后它使用http将请求传递给Web服务器。

Using the Url.Action() method with Request.Url.Schema, it kept creating a http url, in my case to create a link in an automated email (which my PenTester didn't like). 在Request.Url.Schema中使用Url.Action（）方法，它一直在创建一个http url，在我的例子中，在自动电子邮件中创建一个链接（我的PenTester不喜欢）。

I may have cheated a little, but it is exactly what I needed to force a https url: 我可能有一点作弊，但这正是我需要强制https网址：

<a href="@Url.Action("Action", "Controller", new { id = Model.Id }, "https")">Click Here</a>

I actually use a web.config AppSetting so I can use http when debugging locally, but all test and prod environments use transformation to set the https value. 我实际上使用web.config AppSetting所以我可以在本地调试时使用http，但所有测试和prod环境都使用转换来设置https值。