启动时没有加载自动映射配置文件?

msp*_*iuk 8 c# automapper asp.net-core-2.0

我正在使用:

  • AutoMapper 6.1.1
  • AutoMapper.Extensions.Microsoft.DependencyInjection 3.0.1

似乎我的配置文件没有被加载,每次我调用mapper.map我得到AutoMapper.AutoMapperMappingException:'缺少类型映射配置或不支持的映射.

这是我的Startup.cs类的ConfigureServices方法

 // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();

        //register automapper

        services.AddAutoMapper();
        .
        .
    }
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在另一个名为xxxMappings的项目中,我有我的映射配置文件.示例类

public class StatusMappingProfile : Profile
{
    public StatusMappingProfile()
    {
        CreateMap<Status, StatusDTO>()
         .ForMember(t => t.Id, s => s.MapFrom(d => d.Id))
         .ForMember(t => t.Title, s => s.MapFrom(d => d.Name))
         .ForMember(t => t.Color, s => s.MapFrom(d => d.Color));

    }

    public override string ProfileName
    {
        get { return this.GetType().Name; }
    }
}
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并在服务类中以这种方式调用地图

    public StatusDTO GetById(int statusId)
    {
        var status = statusRepository.GetById(statusId);
        return mapper.Map<Status, StatusDTO>(status); //map exception here
    }
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调用statusRepository.GetById后,status具有值

对于我的Profile类,如果不是从Profile继承而是继承MapperConfigurationExpression,我得到了一个单元测试,如下所示,表示映射是好的.

    [Fact]
    public void TestStatusMapping()
    {
        var mappingProfile = new StatusMappingProfile();

        var config = new MapperConfiguration(mappingProfile);
        var mapper = new AutoMapper.Mapper(config);

        (mapper as IMapper).ConfigurationProvider.AssertConfigurationIsValid();
    }
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我的猜测是我的映射没有被初始化.我该怎么检查?我错过了什么吗?我看到了AddAutoMapper()方法的重载

services.AddAutoMapper(params Assembly[] assemblies)
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我应该通过xxxMappings项目中的所有程序集.我怎样才能做到这一点?

msp*_*iuk 10

我明白了.由于我的映射属于不同的项目,我做了两件事

  1. 从我的API项目(Startup.cs所在的位置,添加了对我的xxxMapprings项目的引用)
  2. 在ConfigureServices中,我使用了获取程序集的重载AddAutoMapper:

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();
    
        //register automapper
        services.AddAutoMapper(Assembly.GetAssembly(typeof(StatusMappingProfile))); //If you have other mapping profiles defined, that profiles will be loaded too.
    
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Adr*_*rma 6

当我们在解决方案中的不同项目中映射配置文件时,解决该问题的另一个解决方案是:

services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
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