DependencyResolver.SetResolver 不工作 [英] DependencyResolver.SetResolver Not working

问题描述

我正在尝试使用 Dependency.SetResolver 方法并使用 autofac 与 autofac mvc 5 集成在新应用上设置容器.

I'm trying to set the container on a new app using the Dependency.SetResolver method and using autofac with autofac mvc 5 integration.

问题是设置解析器似乎没有任何作用.将始终使用默认解析器，并且始终期望使用默认构造函数.

The problem is that setting the resolver doesn't appear to do anything. The default resolver will always be used and will always expect a default constructor.

有什么想法吗?

编辑 - global.asax.cs，我已将其简化为:

Edit - The global.asax.cs, I've simplified it down to:

var b = new ContainerBuilder();  
b.RegisterType<UserInfo>().As<IUserSession>().InstancePerHttpRequest();  
var container = b.Build();  
DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

并且 HomeController 在其构造函数中接受一个 IUserSession.抛出的异常是没有为此对象定义无参数构造函数."从System.Web.Mvc.DefaultControllerActivator.Create"抛出

And HomeController takes an IUserSession in its constructor. The exception thrown is "No parameterless constructor defined for this object." Thrown from "System.Web.Mvc.DefaultControllerActivator.Create"

推荐答案

您忘记注册控制器:

b.RegisterControllers(typeof(MvcApplication).Assembly);

有关 Autofac 的更多信息维基页面

More info on Autofac wiki page

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