Autofac 依赖注入

简单了解：https://www.cnblogs.com/WeiGe/p/3871451.html

 项目代码：GitHub

owin+webapi中使用Autofac:

添加Nuget包：

Autofac
Autofac.WebApi2.Owin

owin中添加：

 //注册依赖注入
            ContainerBuilder builder = new ContainerBuilder();
            // Register your Web API controllers.
            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
            
            builder.RegisterType<JwtUserRepository>().As<IJwtUserRepository>();
            builder.RegisterType<JwtUserService>().As<IJwtUserService>();

            // Run other optional steps, like registering filters,
            // per-controller-type services, etc., then set the dependency resolver
            // to be Autofac.
            IContainer container = builder.Build();
            config.DependencyResolver = new AutofacWebApiDependencyResolver(container);

            // OWIN WEB API SETUP:

            // Register the Autofac middleware FIRST, then the Autofac Web API middleware,
            // and finally the standard Web API middleware.
            app.UseAutofacMiddleware(container);
            app.UseAutofacWebApi(config);

①在Repository 仓储中写逻辑代码，Service  应用中调用仓储代码

列如：

②webapi中