WebAPI + APIController with structureMap

问题

Im trying to use StructureMap to initialize my ValuesController that derivate from ApiController but i'm getting an exception that says:

The IControllerFactory '...CustomControllerFactory' did not return a controller for the name 'api'.

Here is the code..

public class CustomControllerFactory : DefaultControllerFactory
{
    protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
    {
        if (controllerType == null)
            return null;

        return (Controller)ConcretizationsManager.GetInstance(controllerType);
    }
}

basically ConcretizationsManager is a wrapper of StructureMap.. This method always runs ok for Controllers of Controller type, but for APIController dont.

Anyone to get me to the right direction? Very thanks

回答1:

For the Web API I am using Custom ServiceActivator like this (i.e. different factory then for MVC):

public class ServiceActivator : IHttpControllerActivator
{
    public ServiceActivator(HttpConfiguration configuration) {}    

    public IHttpController Create(HttpRequestMessage request
        , HttpControllerDescriptor controllerDescriptor, Type controllerType)
    {
        var controller = Factory.CreateInstance(controllerType) as IHttpController;
        return controller;
    }
}

Where Factory is my wrapper of the Sturcturemap API

And in the App_Start\WebApiConfig.cs I do register that like this:

config.Services.Replace(typeof(IHttpControllerActivator), new ServiceActivator(config));

回答2:

There is first party support for this with StructureMap 3

nuget install Structuremap.WebApi2

StructureMap 4 has been released and could be used also, however there may be slight tweaks needed. I have not confirmed for myself.

来源：https://stackoverflow.com/questions/18896758/webapi-apicontroller-with-structuremap