Question

我确定我错过了一些简单的事情。首先，我将显示我编写的用于连接管道的所有代码，然后我将显示异常消息。然后，我将阐述我试图解决的问题。

LicenceTrackerProfile

public class LicenceTrackerProfile : Profile
{
    const string LicenceTrackerProfileName = "LicenceTrackerProfile";

    public override string ProfileName
    {
        get { return LicenceTrackerProfileName; }
    }

    protected override void Configure()
    {
        // initialize mappings here
        new ViewModelMappings(this).Initialize();
    }

}

MapperBootstrapper

public class MapperBootstrapper
{
    public void Configure()
    {
        var profile = new LicenceTrackerProfile();
        AutoMapper.Mapper.Initialize(p => p.AddProfile(profile));
    }

}

MappingBase

public abstract class MappingBase
{
    private readonly Profile _profile;

    protected MappingBase(Profile profile)
    {
        _profile = profile;
        _profile.SourceMemberNamingConvention = new PascalCaseNamingConvention();
        _profile.DestinationMemberNamingConvention = new PascalCaseNamingConvention();
    }

    public Profile Profile
    {
        get { return _profile; }
    }
}

UniversalMapper

public class UniversalMapper : IUniversalMapper
{
    private readonly IMappingEngine _mappingEngine;

    public UniversalMapper(IMappingEngine mappingEngine)
    {
        _mappingEngine = mappingEngine;
    }

    public virtual TDestination Map<TSource, TDestination>(TSource source, TDestination destination)
    {
        return _mappingEngine.Map(source, destination);
    }

}

ViewModelMappings

public class ViewModelMappings : MappingBase, IMappingInitializer
{
    private readonly Profile _profile;

    public ViewModelMappings(Profile profile) : base(profile)
    {
        _profile = profile;
        _profile.SourceMemberNamingConvention = new PascalCaseNamingConvention();
        _profile.DestinationMemberNamingConvention = new PascalCaseNamingConvention();

    }

    public void Initialize()
    {
        //  data to domain mappings
        Profile.CreateMap<EFDTO.Enums.FileTypes, Domain.FileTypes>();
        Profile.CreateMap<EFDTO.Licence, Domain.Licence>();
        Profile.CreateMap<EFDTO.LicenceAllocation, Domain.LicenceAllocation>();
        Profile.CreateMap<EFDTO.Person, Domain.Person>();
        Profile.CreateMap<EFDTO.Software, Domain.Software>();
        Profile.CreateMap<EFDTO.SoftwareFile, Domain.SoftwareFile>();
        Profile.CreateMap<EFDTO.SoftwareType, Domain.SoftwareType>();
    }
}

注意，正在调用initialize方法和Configure方法，因此它们不会被错过＆＃34;

异常

缺少类型映射配置或不支持的映射。

映射类型：软件 - ＆gt;软件LicenceTracker.Entities.Software    - ＆GT; LicenceTracker.DomainEntities.Software

目标路径：软件

来源价值：LicenceTracker.Entities.Software

疑难解答 忽略列。我打算忽略列，从所有列开始，然后通过逐个忽略它们来消除它们，直到找到问题列。但是，令我惊讶的是，当我忽略所有列时会发生错误：

Profile.CreateMap<EFDTO.Software, Domain.Software>()
    .ForMember(software => software.Licences, e => e.Ignore())
    .ForMember(software => software.Name, e => e.Ignore())
    .ForMember(software => software.SoftwareFiles, e => e.Ignore())
    .ForMember(software => software.Type, e => e.Ignore())
    .ForMember(software => software.Description, e => e.Ignore())
    .ForMember(software => software.Id, e => e.Ignore())
    .ForMember(software => software.TypeId, e => e.Ignore()
    .ForMember(software => software.ObjectState, e => e.Ignore());

Domain实体具有[DataContract]（在类级别）和[DataMember]（在方法级别）属性。我也将这些属性添加到EF实体中。

除此之外，我没有想法。这一切似乎都正确连线。

我错过了什么？

Answer 1

我回过头来英勇回答我的问题。

问题出在Service中，它创建了UniversalMapper对象（原谅邋code的代码，它还不是最终的）：

public class LicenceTrackerService : ILicenceTrackerService, IDisposable
{
    LicenceTrackerContext context = new LicenceTrackerContext();
    private MapperBootstrapper mapperBootstrapper;
    private IUniversalMapper mapper = new UniversalMapper(Mapper.Engine);
    private IUnitOfWork unitOfWork;

    public LicenceTrackerService()
    {            
        unitOfWork = new UnitOfWork(context, new RepositoryProvider(new RepositoryFactories()));
        mapperBootstrapper  = new MapperBootstrapper();
        mapperBootstrapper.Configure();

        Database.SetInitializer(new LicenceTrackerInitializer());
        context.Database.Initialize(true);
    }

    public int GetNumber()
    {
        return 42;
    }

    public List<LicenceTracker.DomainEntities.Software> GetSoftwareProducts()
    {
        var productsRepo = unitOfWork.Repository<Software>();

        var list = productsRepo.Query().Select().ToList();

        var softwareList = new List<LicenceTracker.DomainEntities.Software>();

        foreach (var software in list)
        {
            var softwareProduct = new LicenceTracker.DomainEntities.Software();
            softwareList.Add(Mapper.Map(software, softwareProduct));
        }

        return softwareList;
    }

    public void Dispose()
    {
        unitOfWork.Dispose();
    }
}

我仍然不确定原因，但是在构造函数之外初始化映射器（默认值样式）并不高兴。通过将该实例化移动到服务的构造函数中，它起作用了：

    private IUniversalMapper mapper;

    public LicenceTrackerService()
    {
        mapper = new UniversalMapper(Mapper.Engine);
        ...
    }

显然有一些关于静态属性（Mapper.Engine）和我不理解的默认实例。

无论如何，因为我计划将UniversalMapper注入服务中，所以没什么大不了的。

修改我现在实际上已经找到了问题。这是订购的事情。使用Automapper，我必须在将Mapper.Engine插入UniversalMapper之前使用Profile初始化映射器。

显然，Mapper.Engine属性的 Get 方面不仅仅是对象的内存引用。是的，快速浏览一下Automapper中的代码即可确认。

因此，将Get属性的结果分配给 UniversalMapper 的 _mappingEngine 字段必须在配置该引擎后发生。

不支持的映射异常 - Automapper中缺少类型映射配置？

1 个答案: