Automapper 和 Autofac

Automapper and Autofac

我正在尝试让 Automapper 在 ASP.Net MVC 应用程序中与 Autofac 配合使用。

我已按照回答中的说明进行操作:Autofac 3 and Automapper

但是它在第一次调用 _mapper.Map<>(...)

时失败了

Autofac 是这样设置的:

builder.RegisterType<EntityMappingProfile>().As<Profile>();

builder.Register(ctx => new ConfigurationStore(new TypeMapFactory(), MapperRegistry.Mappers))
    .AsImplementedInterfaces()
    .SingleInstance()
    .OnActivating(x =>
    {
        foreach (var profile in x.Context.Resolve<IEnumerable<Profile>>())
        {
            x.Instance.AddProfile(profile);
        }
    });

builder.RegisterType<MappingEngine>().As<IMappingEngine>();

然后在我的业务层我有这样的服务:

public class LinkService : ILinkService
{
    private readonly ILinkRepository _linkRepository;
    private readonly IMappingEngine _mapper;
    public LinkService(ILinkRepository linkRepository, IMappingEngine mapper)
    {
        _linkRepository = linkRepository;
        _mapper = mapper;

    }

    public IEnumerable<LinkEntity> Get()
    {
        var links = _linkRepository.Get().ToList();
        return _mapper.Map<IEnumerable<Link>, IEnumerable<LinkEntity>>(links);
    }

    public LinkEntity GetById(int id)
    {
        var link = _linkRepository.GetById(id);
        return _mapper.Map<Link, LinkEntity>(link);
    }
}

_mapper.Map<IEnumerable<Link>, IEnumerable<LinkEntity>>的调用 失败:

Missing type map configuration or unsupported mapping.

我有什么地方可能出错的想法吗?

您缺少创建 Mapper,创建映射 Link 到 LinkEntityMappingProfile 中的实体:

  internal class EntityMappingProfile :Profile
{
    protected override void Configure()
    {
        base.Configure();
        this.CreateMap<Link, LinkEntity>();
    }
}