c# - autofac 不适用于 azure 网站上的 WebAPI 2

Question

我正在尝试在 azure 上设置我的 Web api，一切都在本地工作文件，但是当我部署到 azure 时，我收到以下错误消息:

An error occurred when trying to create a controller of type 'DestinationController'. Make sure that the controller has a parameterless public constructor.

该网站是一个普通的 azure 网站，而不是工作规则。

这是我的 Autofac Bootstrap 类:

var builder = new ContainerBuilder();
        builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
        builder.RegisterType<UnitOfWork>().As<IUnitOfWork>().InstancePerRequest();
        builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>().InstancePerRequest();
        builder.RegisterAssemblyTypes(typeof(DestinationRepository).Assembly).Where(t => t.Name.EndsWith("Repository")).AsImplementedInterfaces().InstancePerRequest();
        builder.RegisterAssemblyTypes(typeof(DestinationService).Assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces().InstancePerRequest();

        builder.RegisterWebApiFilterProvider(GlobalConfiguration.Configuration);
        IContainer container = builder.Build();

        // Create the depenedency resolver.
        var resolver = new AutofacWebApiDependencyResolver(container);

        // Configure Web API with the dependency resolver.
        GlobalConfiguration.Configuration.DependencyResolver = resolver;

还有我的 Controller :

public class DestinationController : ApiController
{
    private readonly IDestinationService _destinationService;

    public DestinationController(IDestinationService destinationService)
    {
        this._destinationService = destinationService;
    }}

感谢您的帮助。

Answer 1

打开自定义错误消息后，我发现如果注入(inject)的依赖项之一抛出异常，您将收到上面的错误消息。但原始错误消息将位于内部异常中，您可以通过从 web.config 关闭自定义错误来看到该消息