Ninject.MVC3，的NuGet，WebActivator噢，我的 [英] Ninject.MVC3, Nuget, WebActivator oh my

问题描述

我想设置Ninject做一个简单的测试，以及演示使用的NuGet了易于安装。我想解决一个示例服务。

 公共接口ITestService
{
    串的GetMessage（）;
}
公共类TestService的：ITestService
{
    公共字符串的GetMessage（）{返回的Hello World; }
}
 

我运行的NuGet安装封装NinjectMVC3 ....好听滴NinjectMVC3.cs到我App_Start文件夹，装饰着一些WebActivator属性，把它全部调入。

接下来添加我在NinjectMVC3.RegisterServices方法绑定：

 私有静态无效RegisterServices（内核的iKernel）
{
   kernel.Bind＆所述; ITestService方式＆gt;（）到＆lt; TestServiceOne＆GT;（）;
}
 

现在我想'使用'Ninjet来解决我的ITestService。

 公众的ActionResult指数（）
{
  // [Ninject，给我我需要的服务]
  ITestService服务=？  ViewBag.Message = service.GetMessage（）;
  返回查看（）;
}
 

有另一部分设置Ninject？
我是否需要提供一个解析器？

什么是code，我需要解决我ITestService。

thanksasking帮助»

** * * * * * * * * * * *更新：* * * * * * * * * * * * * * * * **

感谢您对'的控制器构造'注入的巨大反应。
简单地增加与ITestServcice作为参数的构造.... BAMM！

 私人ITestService _service;公众的HomeController（ITestService服务）
{
  _Service =服务
}
公众的ActionResult指数（）
{
  ViewBag.Message = _service.GetMessage（）;
  返回查看（）;
}
 

现在什么是理想的解决方案，当我需要直接得到内核。

  VAR内核= ... //去抓住从内核????? （感谢犹大）。
ITestService服务= kernel.Get＆LT; ITestService＆GT;（）;
 

我可以看到NinjectMVC3类创建内核，但不持有或接触到它的引用，也可以找到一个明显的类/法得到内核。

我假设你是一个Ninject方式得到它，但不能肯定。

** * * * * * * * * * * *（最终）更新：* * * * * * * * * * * * * * * * **

有关问题的答案和意见再次感谢....

更正：该NinjectMVC3类创建内核，并持有确实参考了引导程序，它作为一个的iKernel就可以了。

所以我增加了一个解析的方法给App_Start / NinjectMVC3类...伟大工程。

 公共静态类NinjectMVC3 ///由NinjectMVC3的NuGet Packagae创建
{
   //添加方法，以提供一个全球性的解析器。
   公共静态ŧ解决＆LT; T＆GT;（）
   {
       返回bootstrapper.Kernel.Get＆LT; T＆GT;（）;
   }
}
 

解决方案

添加ITestService作为构造参数到控制器：

私人ITestService服务;公共myController的（ITestService服务）
{
   this.service =服务;
}公众的ActionResult指数（）
{
  ViewBag.Message = this.service.GetMessage（）;
  返回查看（）;
}

Ninject自动注入ITestService到控制器。然后使用服务领域的指数方法内。

---

另外，如果你不想Ninject注入到你的控制器构造，可以保持周围创建了内核，那么你的指数方法里面，你叫kernel.Get＆LT; ITestService＆GT;（）抢一个实例：

公众的ActionResult指数（）
{
  VAR内核= ... //去抓住我们的应用程序启动时创建回内核。
  ITestService服务= kernel.Get＆LT; ITestService＆GT;（）;  ViewBag.Message = service.GetMessage（）;
  返回查看（）;
}

看一看 Ninject依赖注入在控制器MVC3 。

I want to setup Ninject to do a simple test, as well as demonstrate the ease-of-setup using Nuget. I want to resolve a sample service.

public interface ITestService
{
    string GetMessage();
}
public class TestService : ITestService 
{
    public string GetMessage() { return "hello world"; }
}

I run the NuGet Install-Package NinjectMVC3 .... it nicely drops NinjectMVC3.cs into my App_Start folder, decorated with some WebActivator attributes to get it all loaded.

Next I add my binding in the NinjectMVC3.RegisterServices method:

private static void RegisterServices(IKernel kernel)
{
   kernel.Bind<ITestService>().To<TestServiceOne>();
}

Now I want to 'use' Ninjet to resolve my ITestService.

public ActionResult Index()
{
  //[Ninject, give me the service I need]
  ITestService service = ??? 

  ViewBag.Message = service.GetMessage();
  return View();
}

Is there another part to setting up Ninject? Do I need to provide a resolver?

What is the code I need to resolve my ITestService.

thanksasking help »

** * * * * * * * * * * * Update: * * * * * * * * * * * * * * * * **

Thanks for the great responses regarding 'controller constructor' injection. Simply adding a constructor with the ITestServcice as a param .... BAMM !!!

private ITestService _service;

public HomeController(ITestService service)
{
  _service = service
}
public ActionResult Index()
{
  ViewBag.Message = _service.GetMessage();
  return View();
}

Now what is the ideal solution for, when I need to get the Kernel directly.

var kernel = ... // Go grab the kernel from ????? (thanks Judah).
ITestService service = kernel.Get<ITestService>();

I can see the NinjectMVC3 class creates the Kernel, but does not hold or expose a reference to it, nor can I find a obvious class/method to 'get the kernel'.

I assume thee is a Ninject way to get it, but not sure.

** * * * * * * * * * * * (Final) Update: * * * * * * * * * * * * * * * * **

Thanks again for the answers and comments ....

Correction: The NinjectMVC3 class creates the Kernel, and does hold reference to the 'Bootstrapper', which as a IKernel on it.

So I added a 'resolve' method to the App_Start/NinjectMVC3 class ... works great.

public static class NinjectMVC3 /// created by the NinjectMVC3 NuGet  Packagae
{
   // add method to provide a global resolver.   
   public static T Resolve<T>()
   {
       return bootstrapper.Kernel.Get<T>();
   }
}

解决方案

Add the ITestService as a constructor parameter to your controller:

private ITestService service;

public MyController(ITestService service)
{
   this.service = service;
}

public ActionResult Index()
{
  ViewBag.Message = this.service.GetMessage();
  return View();
}

Ninject will automatically inject the ITestService into your controller. Then use the service field inside your Index method.

---

Alternately, if you don't want Ninject to inject into your controller constructor, you can keep around the kernel you create, then inside your Index method, you call kernel.Get<ITestService>() to grab an instance:

public ActionResult Index()
{
  var kernel = ... // Go grab the kernel we created back in app startup.
  ITestService service = kernel.Get<ITestService>();

  ViewBag.Message = service.GetMessage();
  return View();
}

Have a look at Ninject dependency inject for controllers in MVC3.

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