namespace S2S.WebApi

{

    public class WebApiApplication : System.Web.HttpApplication

    {

        protected void Application_Start()

        {

            //----AutoFac  DI------

            var builder = new ContainerBuilder();

            SetupResolveRules(builder);

            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());               //RegisterApiControllers方法

            var container = builder.Build();

            HttpConfiguration config = GlobalConfiguration.Configuration;//注意此处HttpConfiguration类的 config对象，一定不要new,要从GlobalConfiguration获取

            config.DependencyResolver = (new AutofacWebApiDependencyResolver(container));      //注意此处与MVC依赖注入不同

            //---------------------------------------------------------

            AreaRegistration.RegisterAllAreas();

            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);

            RouteConfig.RegisterRoutes(RouteTable.Routes);

            BundleConfig.RegisterBundles(BundleTable.Bundles);

            AreaRegistration.RegisterAllAreas();

            GlobalConfiguration.Configure(WebApiConfig.Register);

            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);

            RouteConfig.RegisterRoutes(RouteTable.Routes);

            BundleConfig.RegisterBundles(BundleTable.Bundles);

        }

          /// <summary>

       ///  AutoFac

        /// </summary>

        /// <param name="builder"></param>

        private static void SetupResolveRules(ContainerBuilder builder)

        {

            var assembly = Assembly.Load("s2s.BLL");   //根据程序集名称加载程序集

            builder.RegisterAssemblyTypes(assembly).SingleInstance();//每次都返回同一个实例

            builder.RegisterAssemblyTypes(assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces();

        }

    }

}