Question

我们正在使用StructureMap 3.1.6.186，并且遇到覆盖特定插件的问题。在我们的例子中，我们有一个控制台应用程序，我们正在部署到远程服务器。控制台应用程序对实现的依赖性非常高，需要在服务器上安装一些不需要的COM对象。由于我们确实知道在控制台应用程序中实际上没有使用此特定依赖项，因此我们尝试使用我在控制台应用程序主Program.cs中创建的虚假实现来覆盖有问题的特定实现（IImageManipulator）。这样可以减少在服务器上安装这些com对象的需要，并且不会破坏控制台应用程序。

正如您将从下面的代码和注释中看到的那样，容器构造函数底部的IImageManipulator的显式注册和构造容器后的映射注入似乎都没有按预期工作。有趣的是，当我在控制台应用程序中获得IImageManipulator的实例时，它为我提供了所需的FakeImageManipulator实现。但是，当我获得IEndItemService的实例时，底层实现是我不想要的另一种类型。

任何想法如何覆盖特定接口的所有实现，即使有其他注册表已注册此接口？万分感谢！

public class FakeImageManipulator : IImageManipulator
    {
        public Dictionary<ImageMetaDataEnum, string> GetMetaData(Image image, params ImageMetaDataEnum[] desiredMetaData)
        {
            throw new NotImplementedException();
        }
    }

    public override void ProgramLogic()
    {
        IContainer container = new Container(registry =>
        {
            registry.ForSingletonOf<ITypeResolver>().Use<StructureMapTypeResolver>();
            registry.ForSingletonOf<ILogger>().Use(() => MessageLogger.GetInstance());
            registry.ForSingletonOf<IConfigParser>().Use(() => ConfigParser.GetInstance());

            registry.Scan(scan =>
            {
                scan.AssemblyContainingType<ServiceRegistry>();
                scan.LookForRegistries();
            });

            //--hoping this would override anything that was already set in another registry
            registry.For<IImageManipulator>().Use(() => new FakeImageManipulator());
        });

        container.Model.For<IImageManipulator>().Default.EjectAndRemove();

        //--hoping this would override anything that was already set in another registry
        container.Inject(typeof(IImageManipulator), new FakeImageManipulator());

        //--this gets back the FakeImageManipulator as expected
        IImageManipulator actualImplementation = container.TryGetInstance<IImageManipulator>();

        //--the implementation of IImageManipulator created in here is NOT a FakeImageManipulator like I want, but is
        // instead the instance that is registered in some down stream registry
        var someOtherImplementationThatUsesAnIImageManipulatorDownStream = container.GetInstance<IEndItemsService>();

}

修改：另请参阅此google小组帖子，该帖子是同一个问题：https://groups.google.com/forum/#!topic/structuremap-users/RAR_0JbOVGQ

如何覆盖StructureMap 3插件映射

0 个答案: