public class AutoFacController : Controller

    {

        public IPeople _people;

        public AutoFacController(IPeople people)

        {

            _people = people;

        }

        // GET: AutoFac

        public ActionResult Index()

        {

            ViewBag.test = _people.Getpeople();

            return View();

        }

    }

using Autofac;

using Autofac.Integration.Mvc;

            //创建autofac管理注册类的容器实例

            var builder = new ContainerBuilder();

            //下面就需要为这个容器注册它可以管理的类型

            //builder的Register方法可以通过多种方式注册类型,之前在控制台程序里面也演示了好几种方式了。

            builder.RegisterType<People>().As<IPeople>();

            //builder.RegisterType<DefaultController>().InstancePerDependency();

            //使用Autofac提供的RegisterControllers扩展方法来对程序集中所有的Controller一次性的完成注册

            builder.RegisterControllers(Assembly.GetExecutingAssembly());

            //生成具体的实例

            var container = builder.Build();

            //下面就是使用MVC的扩展 更改了MVC中的注入方式.

            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

    public class AutofacConfig

    {

        /// <summary>

        /// 负责调用autofac框架实现业务逻辑层和数据仓储层程序集中的类型对象的创建

        /// 负责创建MVC控制器类的对象(调用控制器中的有参构造函数),接管DefaultControllerFactory的工作

        /// </summary>

        public static void Register()

        {

            //实例化一个autofac的创建容器

            var builder = new ContainerBuilder();

            //告诉Autofac框架，将来要创建的控制器类存放在哪个程序集 (Wchl.CRM.WebUI)

            Assembly controllerAss = Assembly.Load("Wchl.WMBlog.WebUI");

            builder.RegisterControllers(controllerAss);

            //告诉autofac框架注册数据仓储层所在程序集中的所有类的对象实例

            Assembly respAss = Assembly.Load("Wchl.WMBlog.Repository");

            //创建respAss中的所有类的instance以此类的实现接口存储

            builder.RegisterTypes(respAss.GetTypes()).AsImplementedInterfaces();

            //告诉autofac框架注册业务逻辑层所在程序集中的所有类的对象实例

            Assembly serpAss = Assembly.Load("Wchl.WMBlog.Services");

            //创建serAss中的所有类的instance以此类的实现接口存储

            builder.RegisterTypes(serpAss.GetTypes()).AsImplementedInterfaces();

            // builder.RegisterType<>().As<>();

            //创建一个Autofac的容器

            var container = builder.Build();

            //将MVC的控制器对象实例 交由autofac来创建

            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

        }

    }

        protected void Application_Start(object sender, EventArgs e)

        {

            AutofacConfig.Register();

        }

using Autofac.Integration.WebApi;

  var builder = new ContainerBuilder();

  // Get your HttpConfiguration.

  var config = GlobalConfiguration.Configuration;

  // Register your Web API controllers.

  builder.RegisterApiControllers(Assembly.GetExecutingAssembly());

  // OPTIONAL: Register the Autofac filter provider.

  builder.RegisterWebApiFilterProvider(config);

  // Set the dependency resolver to be Autofac.

  var container = builder.Build();

  config.DependencyResolver = new AutofacWebApiDependencyResolver(container);