在需要时让AutoMapper使用IoC容器注入依赖项 [英] Having AutoMapper to inject dependencies using an IoC Container when needed

问题描述

我几乎已经尝试了所有方法，但是当B没有无参数构造函数时，我无法让AutoMapper映射A => B.

我正在使用Unity，所有的依赖项都可以方便地注册，但是，我如何对AutoMapper说:嘿，如果目标实例在构造函数中需要一些依赖项，请Unity进行构建，然后再进行映射./p>

我尝试过

 Mapper.Initialize(configuration =>
        {
            configuration.ConstructServicesUsing(container.Resolve);
            configuration.CreateMap<Person, PersonViewModel>();
        });

但是它不起作用:(

实际上，我撒了谎.我没有使用Unity.我正在使用 Grace ，但不想提出一个相对未知的容器来询问高级主题:)

我已经解决了这个问题，它像丝绸一样光滑.确切的代码是这样的.请记住，我正在使用Grace IoC容器(我强烈建议使用).

Bootstrapper.Instance.Configure(new CompositionRoot());

        Mapper.Configuration.ConstructServicesUsing(type => Bootstrapper.Instance.Container.Locate(type));
        Mapper.CreateMap<Person, PersonViewModel>()
            .ConstructUsingServiceLocator();

解决方案

像这样:

configuration.CreateMap<Person, PersonViewModel>()
    .ConstructUsingServiceLocator();

对应该由服务定位器创建的每个映射执行此操作.

I have tried almost everything, but I cannot get AutoMapper to map A => B when B doesn't have a parameterless constructor.

I'm using Unity and all the dependencies are registered conveniently but, how do I say to AutoMapper "hey, if the target instance needs some dependency in the constructor, ask Unity to build it, and do the mapping later.

I've tried with

 Mapper.Initialize(configuration =>
        {
            configuration.ConstructServicesUsing(container.Resolve);
            configuration.CreateMap<Person, PersonViewModel>();
        });

But it doesn't work :(

EDIT: In fact, I lied a bit. I'm not using Unity. I'm using Grace, but didn't want to come up with a relatively unknown container asking about advances topics :)

I've solved the problem and it works as smooth as silk. The exact code is like this. Keep in mind that I'm using the Grace IoC Container (which I eagerly recommend).

Bootstrapper.Instance.Configure(new CompositionRoot());

        Mapper.Configuration.ConstructServicesUsing(type => Bootstrapper.Instance.Container.Locate(type));
        Mapper.CreateMap<Person, PersonViewModel>()
            .ConstructUsingServiceLocator();

解决方案

Like this:

configuration.CreateMap<Person, PersonViewModel>()
    .ConstructUsingServiceLocator();

Do this for each mapping that should be created by your service locator.

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