Configuring MVC 4 with StructureMap

June 25, 2012UncategorizedJim Geurts

I started a new MVC4 project and wanted to use StructureMap for my IOC container of choice. I followed Phil’s post about wiring up dependency resolvers in mvc 4, but I kept getting the following error: “StructureMapDependencyResolver does not appear to implement Microsoft.Practices.ServiceLocation.IServiceLocator.
Parameter name: commonServiceLocator”

Took a little digging, but I found the CommonServiceLocator project from the Microsoft Patterns and Practice group. That project has a StructureMap implementation of the IServiceLocator interface for StructureMap. After I installed the CommonServiceLocator nuget, I was able to reference IServiceLocator in my code. Taking the code from the CommonServiceLocator implementation, I ended up with the following:

using System; using System.Collections.Generic; using System.Linq; using Microsoft.Practices.ServiceLocation; using StructureMap; // This is part of MvcKickstart (https://nuget.org/packages/mvckickstart) namespace MvcKickstart.Infrastructure { /// <summary> /// Wrapper for IDependencyScope, so that StructureMap plays nicely with built in mvc4 dependency resolution. /// </summary> public class StructureMapDependencyScope : ServiceLocatorImplBase { protected readonly IContainer Container; public StructureMapDependencyScope(IContainer container) { if (container == null) throw new ArgumentNullException("container"); Container = container; } public new object GetService(Type serviceType) { if (serviceType == null) return null; try { return serviceType.IsAbstract || serviceType.IsInterface ? Container.TryGetInstance(serviceType) : Container.GetInstance(serviceType); } catch { return null; } } /// <summary> /// When implemented by inheriting classes, this method will do the actual work of resolving /// the requested service instance. /// </summary> /// <param name="serviceType">Type of instance requested.</param> /// <param name="key">Name of registered service you want. May be null.</param> /// <returns> /// The requested service instance. /// </returns> protected override object DoGetInstance(Type serviceType, string key) { if (string.IsNullOrEmpty(key)) { return GetService(serviceType); } return Container.TryGetInstance(serviceType, key); } /// <summary> /// When implemented by inheriting classes, this method will do the actual work of /// resolving all the requested service instances. /// </summary> /// <param name="serviceType">Type of service requested.</param> /// <returns> /// Sequence of service instance objects. /// </returns> protected override IEnumerable<object> DoGetAllInstances(Type serviceType) { return Container.GetAllInstances(serviceType).Cast<object>(); } public IEnumerable<object> GetServices(Type serviceType) { return Container.GetAllInstances(serviceType).Cast<object>(); } public void Dispose() { Container.Dispose(); } } }

The following code will setup mvc to use structuremap as the dependency resolver. Add the webactivator nuget and toss the following file in your app_start folder:

Hope this helps someone looking to do the same!

5 thoughts on “Configuring MVC 4 with StructureMap”

Steve says:

July 18, 2012 at 7:23 am

Your .Cast() extension method isn’t included here, or its namespace isn’t if it’s a built-in method.

Is there a working MVC4RC project you can point to that shows everything wired up, perhaps on Github?

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Steve says:

July 18, 2012 at 7:24 am

Ah, using System.Linq; solves the Cast issue – http://msdn.microsoft.com/en-us/library/bb341406.aspx

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Saver says:

September 26, 2013 at 5:36 pm

And … of course you would also need the following line in global.cs : )

GlobalConfiguration.Configuration.DependencyResolver = new StructureMapDependencyResolver(ObjectFactory.Container);

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1. Jim Geurts says:
  
  September 27, 2013 at 9:23 am
  
  More recent code is available at: https://github.com/jgeurts/MvcKickstart/blob/master/Modules/MvcKickstart/Infrastructure/StructureMapDependencyResolver.cs
  
  Also, the dependency resolver is set via WebActivator: https://github.com/jgeurts/MvcKickstart/blob/master/Modules/MvcKickstart/Nuget/App_Start/IocConfig.cs.pp
  
  Installing the MVCKickstart nuget will auto wire all of that up for you.
  
  Reply

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Configuring MVC 4 with StructureMap

5 thoughts on “Configuring MVC 4 with StructureMap”

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