How to inject different dependencies into WebApi Controller using StructureMap

Question

Currently I have an MVC application which also contains WebApi controllers.

I've set-up StructureMap to initialize using default conventions which handles service dependencies for both MVC and WebApi. This all works perfectly.

However, I have one Authentication service dependency which should be injected for WebApi and a different implementation for MVC. Since StructureMap has the same initialization bootstrap code, how do I switch depending on whether the request coming in is a WebApi endpoint or and Mvc controller endpoint?

jaffa · Accepted Answer · 2012-05-10 14:37:45Z

1

Don't know if this is the best way of achieving this but I use the ObjectFactory.Configure method to override the initialization registries on boot-up but do this inside each SetResolver on Mvc's DependencyResolver.SetResolver and on WebApi's GlobalConfiguration.Configuration.ServiceResolver.SetResolver.

e.g.

 ObjectFactory.Configure(x => x.For<IAuthenticationService>() 
                        .Use(s => s.GetInstance<IMvcAuthenticationService>()));

and

 ObjectFactory.Configure(x => x.For<IAuthenticationService>() 
                        .Use(s => s.GetInstance<IWebApiAuthenticationService>()));

answered May 10, 2012 at 14:37

jaffa

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