如何使用容器，而不是在ObjectFactory的StructureMap ServiceActivator？ [英] How to use Container instead of ObjectFactory in StructureMap ServiceActivator?

问题描述

当在使用的WebAPI实现StructureMap DI，我们使用了 ServiceActivator 在

When implementing DI in WebAPI with StructureMap, we used the ServiceActivator found in

• Configuring依赖注入与ASP.NET的WebAPI 2.1


• 的WebAPI + APIController与structureMap

• Configuring Dependency Injection with ASP.NET WebAPI 2.1
• WebAPI + APIController with structureMap

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

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

但是现在有了新的 StructureMap ，我ReSharper的建议：

But now with the new StructureMap, my ReSharper suggested:

班StructureMap.ObjectFactory已过时：ObjectFactory的将在未来的4.0版本StructureMap来去除。赞成容器类的未来工作的用法

Class 'StructureMap.ObjectFactory' is obsolete: ObjectFactory will be removed in a future 4.0 release of StructureMap. Favor the usage of the Container class for future work

在集装箱智能感知给了我只有非常有限的信息。

The intellisense on Container gave me only very limited information.

我们怎么改写我们的 ServiceActivator 与容器类？

How are we supposed to rewrite our ServiceActivator with the Container class?

推荐答案

东西是怎么回事走。如果你不使用某种类型的服务定位器，你将不得不实现自己的的ObjectFactory 为的这里引用：

The static stuff is going away. If your not using a Service Locator of some type you're going to have implement your own "ObjectFactory" as referenced here:

public static class ObjectFactory
{
    private static readonly Lazy<Container> _containerBuilder =
            new Lazy<Container>(defaultContainer, LazyThreadSafetyMode.ExecutionAndPublication);

    public static IContainer Container
    {
       get { return _containerBuilder.Value; }
    }

     private static Container defaultContainer()
     {
        return new Container(x =>
        {
               // default config
         });
     }
}

更新：我的previous答案是错的。感谢@JoeMighty的抬起头。

Update: My previous answer was wrong. Thanks @JoeMighty for the heads up.

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