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 = "";
             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);
         }
     }