C# Ioc 介面註冊執行個體以及注入MVC Controller

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當弄一個小程式時，就忽略了使用Ioc這種手段，作為一個帥氣程式員，代碼規範，你懂的~，廢話不多說，快速搭建一個Ioc介面執行個體以及直接注入到 MVC Controller 建構函式中如下：

MVC integration requires the Autofac.Mvc5 NuGet package.

文檔：http://docs.autofac.org/en/latest/integration/mvc.html#register-controllers

代碼如下：

1.首先我們建立一個WebContainer.cs 類檔案，代碼如下：

using System.Web;
using System.Web.Mvc;
using Autofac;
using Autofac.Core;
using Autofac.Integration.Mvc;

namespace Dlw.MiddleService.Ioc
{
public class WebContainer
{
internal static IContainer Container { get; set; }
public static void Initialize(IModule webComponentsModule)
{
var builder = new ContainerBuilder();

builder.RegisterModule(webComponentsModule);
builder.RegisterModule<AutofacWebTypesModule>();
Container = builder.Build();
DependencyResolver.SetResolver(new Autofac.Integration.Mvc.AutofacDependencyResolver(Container));

}
public static T Resolve<T>()
{
// In case of a background thread, the DependencyResolver will not be able to find
// the appropriate lifetime, which will result in an error. That‘s why we fallback to the root container.
// Requesting a type that has been configured to use a "Per Request" lifetime scope, will result in a error
// in case of a background thread

if (HttpContext.Current == null)
return Container.Resolve<T>();

return DependencyResolver.Current.GetService<T>();
}
}
}

對於Resolve靜態方法，用於Controller 之外的地方，用起來很方便。

2.建立一個IocConfig.cs 類檔案，規範一點把這個檔案建立在App_Start folder下，此類繼承Autofac的Model，代碼如下：

using Autofac;
using System.Reflection;
using Autofac.Integration.Mvc;
using Dlw.MiddleService.Sap.Interface;

using Module = Autofac.Module;

namespace Dlw.MiddleService.App_Start
{
public class IocConfig : Module
{
protected override void Load(ContainerBuilder builder)
{
// Register the mvc controllers.
builder.RegisterControllers(Assembly.GetExecutingAssembly());
// Register all interface
builder.RegisterAssemblyTypes(typeof(IStore).Assembly)
.Where(t => typeof(IStore).IsAssignableFrom(t))
.AsImplementedInterfaces().SingleInstance();
}
}
}

3.建立父類介面，Ioc註冊介面的入口

namespace Dlw.MiddleService.Sap.Interface
{
public interface IStore
{
}
}

4.建立介面且繼承Ioc註冊入口 IStore，

namespace Dlw.MiddleService.Sap.Interface
{
public interface IRepository : IStore
{
string Test();
}
}

5.介面實現

namespace Dlw.MiddleService.Sap.Services
{
public class RepositoryImpl : IRepository
{
public string Test()
{
return "Hello World";
}
}
}

6. 在程式集中初始化Ioc且啟動它進行工作

7. MVC Controller 注入

 

去吧少年，Ioc介面執行個體和MVC Controller 參數注入已經完成，Good Luck~

 

C# Ioc 介面註冊執行個體以及注入MVC Controller