AutoMapper,远离过时的静态API

Question

我正在使用现有的解决方案.该解决方案使用Windsor IoC.我有一个AutomapperMappings.cs看起来像这样的课程:

public class AutoMapperMappings
{
    public static void Configure()
    {
        AutoMapper.Mapper.Configuration
        .CreateMap<LatestUpdateModel, LatestUpdate>();

        AutoMapper.Mapper.Configuration
        .CreateMap<LatestUpdate, LatestUpdateModel>();

        AutoMapper.Mapper.Configuration
        .CreateMap<DownloadLinkModel, DownloadLink>();

        AutoMapper.Mapper.Configuration
        .CreateMap<DownloadLink, DownloadLinkModel>();

        AutoMapper.Mapper.Configuration
        .CreateMap<NavigationElementModel, NavigationElement>();

        AutoMapper.Mapper.Configuration
        .CreateMap<NavigationElement, NavigationElementModel>();

        AutoMapper.Mapper.Configuration
        .CreateMap<Promobox, PromoboxModel>();

        AutoMapper.Mapper.Configuration
        .CreateMap<PromoboxModel, Promobox>();
    }
}

在我Global.asax,我有以下内容:

protected void Application_Start(object sender, EventArgs e)
{
    IoCContainer();
    ConfigureAutoMapperMappings();
}

protected virtual void ConfigureAutoMapperMappings()
{
    AutoMapperMappings.Configure();
}

以上是给我一个警告说我应该放弃静态API.所以我用Google搜索并做了一些阅读,建议我改变我的意思AutomapperMappings.cs:

public class AutoMapperMappings
{
    public static void Configure()
    {
        var config = new MapperConfiguration(cfg =>
        {
            cfg.CreateMap<LatestUpdateModel, LatestUpdate>();
            cfg.CreateMap<LatestUpdate, LatestUpdateModel>();
            cfg.CreateMap<DownloadLinkModel, DownloadLink>();
            cfg.CreateMap<DownloadLink, DownloadLinkModel>();
            cfg.CreateMap<NavigationElementModel, NavigationElement>();
            cfg.CreateMap<NavigationElement, NavigationElementModel>();
            cfg.CreateMap<Promobox, PromoboxModel>();
            cfg.CreateMap<PromoboxModel, Promobox>();
        });
    }
}

这一切都很好,但变量var config实际上并没有在任何地方使用,所以我确定我需要做更多的东西,但我不知道我需要改变什么和在哪里.

Answer 1

有一个教程"从静态API迁移".

您需要创建mapper对象并将其注册到IoC容器:

public class AutoMapperMappings
{
    public static void Configure(IWindsorContainer container)
    {
        var config = new MapperConfiguration(cfg =>
        {
            cfg.CreateMap<LatestUpdateModel, LatestUpdate>();
            ...
        });

        var mapper = config.CreateMapper();

        // register your mapper here.
        container.Register(Component.For<IMapper>().Instance(mapper));
    }
}

现在,您可以将映射器注入需要映射实体的类:

public class ExampleClass 
{
    private readonly IMapper _mapper;
    public ExampleClass(IMapper mapper)
    {
        _mapper = mapper;
    }

    public void DoWork()
    {
        var model = new LatestUpdateModel();
        ...
        var update = mapper.Map<LatestUpdateModel, LatestUpdate>(model);
    }
}

此迁移将通过创建模拟对象到IMapper接口来帮助您使代码更易于测试.