ASP.NET MVC实现依赖注入的完整过程

public class FastControllerFactory : DefaultControllerFactory
  {
    public override IController CreateController(RequestContext requestContext, string controllerName)
    {
      Type type = this.GetControllerType(requestContext, controllerName);
      Object obj = GetControllerInstance(requestContext, type);

      //Controller中标记AutoWired属性的自动注入
      List<FieldInfo> AutoWiredFieldList = type.GetRuntimeFields().Where(f => f.GetCustomAttribute(typeof(AutoWired)) != null).ToList();
      foreach (FieldInfo field in AutoWiredFieldList)
      {
        field.SetValue(obj, InjectUtil.Container.Resolve(field.FieldType));
      }
      return obj as IController;
    }
  }

ControllerBuilder.Current.SetControllerFactory(new FastControllerFactory());

public class InjectUtil
  {
    public static ContainerBuilder Container;
    public static void Init()
    {
      Container = new ContainerBuilder();
       //获取所有程序集
      var assemblies = System.Web.Compilation.BuildManager.GetReferencedAssemblies().Cast<Assembly>().ToArray();
      //注入所有Component组件
      Container.RegisterAssemblyTypes(assemblies, typeof(Component),true);
      Container.Build();
    }
  }

private Object GetInstance(RegisterEntity Entity)
    {
      Object obj = null;
      if (Entity.IsEnableIntercept)
      {
        bool IsExtend = Entity.RealType == Entity.RegistType;
        obj = DynamictProxy.CreateProxyObject(Entity.RealType, Entity.RegistType, Entity.InterceptType, IsExtend, Entity.IsInterceptAllMethod);


      }
      else
      {
        var constructors = Entity.RegistType.GetConstructors();
        obj = constructors[0].Invoke(new Object[] { });
      }
      //这里使用单例模式将实例化Instance存储,提前暴露未进行后续设置的对象实例
      if (!SingleInstanceDic.ContainsKey(Entity.RealType))
      {
        SingleInstanceDic.Add(Entity.RealType, obj);
      }
    
      //如果这个class标记了Component，且有标记了AutoWired的Field，进行自动注入
      if (Entity.RealType.GetCustomAttribute(typeof(Component), true) != null)
      {
        //这里要使用GetRuntimeFields，此方法返回在指定类型上定义的所有字段，包括继承，非公共，实例和静态字段。
        foreach (FieldInfo Field in Entity.RealType.GetRuntimeFields())
        {
          if (Field.GetCustomAttribute(typeof(AutoWired), true) != null)
          {
            Type FieldType = Field.FieldType;
            if (Contains(FieldType))
            {
              //判断单例存储中是否包含，如果有，取出赋值，这里可以防止循环依赖导致的死循环
              if (SingleInstanceDic.ContainsKey(FieldType))
              {
                Field.SetValue(obj, SingleInstanceDic[FieldType]);
              }
              else
              {
                Field.SetValue(obj, Resolve(FieldType));
              }
              
            }
          }
        }
      }
      return obj;

    }

 private AuthUtil @AuthUtil = InjectUtil.Container.Resolve<AuthUtil>();