ASP.Net WebApi2 中的 Mediatr 实现

Question

我正在尝试在 ASP.Net Web Api 中实现 mediatr 模式。

得到以下错误：

找不到请求类型的处理程序 MediatR.IRequestHandler`2[Orion_API.Campaigns.GetCampaigns.GetCampaignsRequest,System.Collections.Generic.List`1[Orion_API.Campaigns.GetCampaigns.GetCampaignsResponse]]。 向容器注册您的处理程序。

我的引导类如下：

builder.RegisterApiControllers(Assembly.GetExecutingAssembly());

builder.RegisterGeneric(typeof(GenericRepository<>))
       .As(typeof(IGenericRepository<>))
       .InstancePerRequest();

builder.RegisterType<Mediator>().As<IMediator>().InstancePerLifetimeScope();

builder.Register<ServiceFactory>(context =>
{
    var componentContext = context.Resolve<IComponentContext>();
    return t => {
        object o;

        return componentContext.TryResolve(t, out o) ? o : null;
    };
});


//Set the dependency resolver to be Autofac.  
Container = builder.Build();

Answer 1

builder.RegisterApiControllers(Assembly.GetExecutingAssembly());

    builder.RegisterGeneric(typeof(GenericRepository<>))
           .As(typeof(IGenericRepository<>))
           .InstancePerRequest();

    builder.RegisterType<Mediator>().As<IMediator>().InstancePerLifetimeScope();

    builder.Register<ServiceFactory>(context =>
    {
        var componentContext = context.Resolve<IComponentContext>();
        return t => {
            object o;

            return componentContext.TryResolve(t, out o) ? o : null;
        };
    });