怎么在webapi2中实现autofac的注入，求完整解决方法

var builder = new ContainerBuilder()

HttpConfiguration config = GlobalConfiguration.Configuration

builder.RegisterType<HomeController>()

builder.RegisterApiControllers(Assembly.GetExecutingAssembly())

builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly()).As<IPerson>() .InstancePerApiRequest()

var container = builder.Build()

config.DependencyResolver = new AutofacWebApiDependencyResolver(container)

DependencyResolver.SetResolver(new AutofacDependencyResolver(container))

依赖注入依靠的是向注入服务（对于你来说就是Autofac）提前注册类型。所以如果你要注入一个Func，那就要先注册：

builder.Register<Func<...>>(typeof(该代理的实例))

总的来说，和注册接口也没什么区别。

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