StructureMap + MVC4 + WebApi

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http.Dependencies;
using StructureMap;

public class StructureMapResolver : IDependencyScope, IDependencyResolver
{
	private readonly IContainer _container;
	private readonly bool _isContainerOwner;

	public StructureMapResolver(IContainer container) : this(container, false)
	{
	}

	public StructureMapResolver(IContainer container, bool isContainerOwner)
	{
		_container = container;
		_isContainerOwner = isContainerOwner;
	}

	public IDependencyScope BeginScope()
	{
		return new StructureMapResolver(_container.GetNestedContainer(), isContainerOwner: true);
	}

	public object GetService(Type serviceType)
	{
		if (serviceType == null)
		{
			return null;
		}

		if (serviceType.IsAbstract || serviceType.IsInterface)
		{
			return _container.TryGetInstance(serviceType);
		}

		return _container.GetInstance(serviceType);
	}

	public IEnumerable<object> GetServices(Type serviceType)
	{
		return _container.GetAllInstances(serviceType).Cast<object>();
	}

	public void Dispose()
	{
		if (_isContainerOwner)
		{
			_container.Dispose();
		}
	}
}