在Mvc.Controller使用服务器 [英] Using Server in Mvc.Controller

问题描述

我从 Mvc.Controller 我自己继承了 App.Controller 然后我所有的控制器继承。我写了使用接口的提供者和执行为为MyService 和构造函数的服务器的属性 Mvc.Controller 是的HttpServerUtilityBase 。

I have my own inherited App.Controller from Mvc.Controller which then all of my controllers inherit from. I wrote a provider utilizing an interface and implemented it as MyService and the constructor takes the Server property of Mvc.Controller which is of HttpServerUtilityBase.

不过，我实例为MyService 在 App.Controller 的构造。问题是，控制器的服务器属性是施工时空 为MyService 。我已经使用公共控制器（）：基地（）{} 去建造基地。然而，服务器遗体空。

However, I instantiate MyService in App.Controller's constructor. The problem is that the Server property of the Controller is null when constructing MyService. I have used public Controller () : base() { } to get the base to be constructed. However, Server remains null.

我想避免 Web.HttpContext.Current.Server 如果可能的话。

I would like to avoid Web.HttpContext.Current.Server if possible.

有没有人有这个问题的一个变通？

Has any one have a work around for this problem?

编辑：好了，我已经实现tvanfosson的建议，当我的应用程序构建为MyService 在属性 GET 方法服务器仍是空。

Well, I have implemented tvanfosson's suggestion, and when my app constructs MyService in the property get method, Server is still null.

编辑2：没关系，我是个混日子。我不得不使用其他控制器 服务器藏汉并没有改变。结案。

Edit 2: Nevermind, I was a goof. I had another Controller using Server aswell and did not change that. Case closed.

推荐答案

使用延​​迟初始化来构建你的服务。

Use delayed initialization to construct your service.

private MyService service;
public MyService Service
{
    get
    {
         if (this.service == null)
         {
             this.service = new MyService(this.Server);
         }
         return this.service;
    }
}

那么，你的服务没有实际实例化，直到它在控制器的行动，并通过当时的服务器属性已设置时使用。

Then, your service isn't actually instantiated until it is used in the controller action and by that time the Server property has been set.

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