MVC Autofac依赖注入

通过Dll实现全部类的属性注入,该演示实例主要通过多层架构中单一的对象方式来演示，没有采取接口的方式, 新建AutoFacHelper类，如下代码:

public class AutoFacHelper
    {
        private static IContainer _container;

        public static void InitAutofac()
        {
            var builder = new ContainerBuilder();

            //注册数据库基础操作和工作单元

           

            //注册app层


            builder.RegisterAssemblyTypes(Assembly.Load("MCFrame.Application")).Where(x => x.Namespace == "MCFrame.Application").PropertiesAutowired(PropertyWiringOptions.PreserveSetValues);
            // .AsImplementedInterfaces().InstancePerLifetimeScope();




            //注册Repository
            builder.RegisterAssemblyTypes(Assembly.Load("MCFrame.Repository")).Where(x => x.Namespace == "MCFrame.Repository");
                //.AsImplementedInterfaces().InstancePerLifetimeScope();
           

            builder.RegisterControllers(Assembly.Load("MCFrame.Controllers")).PropertiesAutowired();
            
           
            _container = builder.Build();
           
            DependencyResolver.SetResolver(new AutofacDependencyResolver(_container));

           

        }

        /// <summary>
        /// 从容器中获取对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        public static T GetFromFac<T>()
        {
            return _container.Resolve<T>();
            //   return (T)DependencyResolver.Current.GetService(typeof(T));
        }
    }
在nuget包搜素autofac和autofac.mvc5包安装下载,将需要注入的dll都拷贝到web层bin目录下,

PropertiesAutowired表示通过属性的方式注入

Web层Controller代码如下

 public class HomeController : Controller
    {

      public  UsersApp app { get; set; }
     // public UsersRepository dal { get; set; }
       
        public string Index()
        {



            UsersEntity model = new UsersEntity();
            model.ID = Guid.NewGuid();
            model.UserName = "test";
            model.UserPwd = "1232";
            model.AddTime = DateTime.Now;
            app.AddInfo(model);
            
            return "";
        }
    }

Application(BLL)层代码如下

public class UsersApp
    {

      public UsersRepository dal { get; set; }
        public void AddInfo(UsersEntity entity)
        {

           // UsersRepository rp = new UsersRepository();
            dal.SaveEntity("", entity);
        }
    }