环境是 mvc5. Visual Studio 2017.

引用相关程序集

Nuget 搜索 Autofac, 引用前两个 Autofac 和 Autofac.Mvc5 如图 Nuget

新建测试类

以保存日志为例。新建 ILog.cs 和 DbLog.cs

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public interface ILog
{
    void Save(string message);
}

public class DbLog : ILog
{
    public void Save(string message)
    {
        //TODO.链接数据库 保存日志
    }
}

新建 Autofac.config

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public class AutofacConfig
{
    public static void Register()
    {
        ContainerBuilder builder = new ContainerBuilder();
        //注册控制器
        builder.RegisterControllers(Assembly.GetExecutingAssembly());
        //TODO.在这注册

        //注册日志测试类
        builder.RegisterType<DbLog>().As<ILog>();


        var container = builder.Build();
        //移交Mvc
        DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
    }

}

Controller 中使用

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public class HomeController : Controller
{
    private readonly ILog _log;

    public HomeController(ILog log)
    {
        this._log = log;
    }


    public ActionResult Index()
    {
        _log.Save("Home.Index");
        return View();
    }
}