使用Unity的InjectionFactory进行依赖注入遇到如下提示：
‘InjectionFactory’ is obsolete: ‘InjectionFactory has been deprecated and will be removed in next release. Please use IUnityContainer.RegisterFactory(…) method instead.
提示InjectionFactory将被淘汰的注入代码：
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| var container = new UnityContainer();
container.RegisterType<IAnimal, Cat>("Cat", new InjectionConstructor());
container.RegisterType<IAnimal, Dog>("Dog", new InjectionConstructor());
container.RegisterType<List<IAnimal>>(
"AnimalList",
new InjectionFactory(
m => new List<IAnimal>
{
m.Resolve<IAnimal>("Cat"),
m.Resolve<IAnimal>("Dog"),
}
)
);
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改为RegisterFactory之后的注入代码：
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| container.RegisterFactory<List<IAnimal>>(
"AnimalList",
m => new List<IAnimal>
{
m.Resolve<IAnimal>("Cat"),
m.Resolve<IAnimal>("Dog"),
}
);
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两段代码比较，区别在于将"RegisterType"方法替换为"RegisterFactory"方法，并将InjectionFactory这层的wrapper去除即可。
比较下RegisterType和RegisterFactory的构造函数，也可以看出diff:
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| IUnityContainer RegisterType<T>(this IUnityContainer container, string name, params InjectionMember[] injectionMembers);
InjectionFactory(Func<IUnityContainer, object> factoryFunc);
IUnityContainer RegisterFactory<TInterface>(this IUnityContainer container, string name, Func<IUnityContainer, object> factory, IFactoryLifetimeManager lifetimeManager = null);
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