In a simple web api application, I have an OData v3 controller and a Web Api controller both using Autofac. After I got Odata working, my Web Api injection has stopped working with:
An error occurred when trying to create a controller of type 'UsersController'.
Make sure that the controller has a parameterless public constructor.
I've troubleshooted autofac a hundred times and this one has me stumped. I've confirmed that both of the dependencies can be resolved.
Nuget packages installed into Visual Studio 2012:
- Autofac.WebApi2 3.4.0
- Autofac 3.5.2
- Microsoft.Data.Edm 5.6.4
- Microsoft.AspNet.WebApi 5.2.3
- Microsoft.Data.OData 5.6.4
Background information: In Visual Studio 2.12 I started with Web Api 2.2, then added Odata v1-3. At this point, both controllers worked. When I installed Autofac, I started getting a message in both controller responses of a missing reference to Microsoft.Odata.Core 6.11. After I installed Microsoft.Odata.Core 6.11 alongside 5.6.4, Odata started working, but Web Api broke.
I have to use Odata v3 to get Excel support. I know Odata v3 is working because Excel is still able to pull data.
ContainerConfig.cs
var builder = new ContainerBuilder();
var config = GlobalConfiguration.Configuration;
builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly())
.AsImplementedInterfaces();
builder.RegisterWebApiFilterProvider(config);
var container = builder.Build();
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
Web Api 2.2 controller:
public class UsersController : ApiController
{
private readonly IUserService _users;
UsersController(IUserService users)
{
_users = users;
}
}
Odata controller:
public class InsightsController : ODataController
{
private readonly IInsightService _insightService;
public InsightsController(IInsightService insightService)
{
_insightService = insightService;
}
}
