Question

我从nuget更新了我的automapper 4.2.1，它是安装automapper 6.1.1版本。在旧版本中，所有映射都能正常工作，但是当我更新我的automapper库时，映射不起作用，它表示缺少类型映射配置或不支持的映射。使用Mapper.Map<Class1,Class2>(result)时映射类型。我在global.asax中使用配置文件进行配置。我的项目是C＃MVC，这是我的代码;

在Global.asax

中

 public class MvcApplication : HttpApplication
    {
        protected void Application_Start()
        {
           AutoMapperConfigurations.Configure();
        }
    }

我的Mapper配置

public class AutoMapperConfigurations
    {
        public static void Configure()
        {

            Mapper.Initialize(cfg =>
            {
                cfg.AddProfile<ModeltoDTOMappingsProfile>();
                cfg.AddProfile<DTOtoDTOModelMappingsProfile>();
                cfg.AddProfile<DTOtoViewModelMappingsProfile>();
                //cfg.ForAllMaps((tm, me) => me.ForAllMembers(option => option.Condition((source, destination, sourceMember) => sourceMember != null)));
            });


            Mapper.AssertConfigurationIsValid();
   }

这是我的一个个人资料示例代码

public class DTOtoViewModelMappingsProfile: Profile
    {

        public DTOtoViewModelMappingsProfile()
        {

            Mapper.Initialize(cfg =>
            {
                // Also I tried these one but It didn't work

                //cfg.CreateMissingTypeMaps = true;
                //cfg.AllowNullCollections = true;
                //cfg.AllowNullDestinationValues = false;
                //cfg.ForAllMaps((tm, me) => me.ForAllMembers(option => option.Condition((source, destination, sourceMember) => sourceMember != null)));

    #region Category

                cfg.CreateMap<TreeCategoryViewModel, TreeCategoryDtos>()
                    .ForMember(dest => dest.T_C_ID, opt => opt.MapFrom(src => src.CId))
                    .ForMember(dest => dest.T_C_DESC, opt => opt.MapFrom(src => src.CDesc))
                    .ForMember(dest => dest.T_C_INUSE, opt => opt.MapFrom(src => src.CInuse))
                    .ForMember(dest => dest.T_IS_TECH, opt => opt.MapFrom(src => src.IsTech))
                    .ForMember(dest => dest.T_IS_BRANCH, opt => opt.MapFrom(src => src.IsBranch))
                    .ForMember(dest => dest.T_IS_MARKETING, opt => opt.MapFrom(src => src.IsMarketing))
                    .ForMember(dest => dest.T_IS_SUPPORT, opt => opt.MapFrom(src => src.IsSupport))
                    .ForMember(dest => dest.T_C_LEVEL, opt => opt.MapFrom(src => src.CLevel))
                    .ForMember(dest => dest.T_C_ORDER, opt => opt.MapFrom(src => src.COrder))
                    .ForMember(dest => dest.T_C_PARENT, opt => opt.MapFrom(src => src.CParent))
                    .ForMember(dest => dest.TREE_CATEGORY1, opt => opt.ResolveUsing(src => src.TreeCategoryDtos1))
                    .ForMember(dest => dest.TREE_CATEGORY2, opt => opt.ResolveUsing(src => src.TreeCategoryDtos2))
                    ;

                cfg.CreateMap<TreeCategoryDtos, TreeCategoryViewModel>()
                    .ForMember(dest => dest.CId, opt => opt.MapFrom(src => src.T_C_ID))
                    .ForMember(dest => dest.CDesc, opt => opt.MapFrom(src => src.T_C_DESC))
                    .ForMember(dest => dest.CInuse, opt => opt.MapFrom(src => src.T_C_INUSE))
                    .ForMember(dest => dest.IsTech, opt => opt.MapFrom(src => src.T_IS_TECH))
                    .ForMember(dest => dest.IsBranch, opt => opt.MapFrom(src => src.T_IS_BRANCH))
                    .ForMember(dest => dest.IsMarketing, opt => opt.MapFrom(src => src.T_IS_MARKETING))
                    .ForMember(dest => dest.IsSupport, opt => opt.MapFrom(src => src.T_IS_SUPPORT))
                    .ForMember(dest => dest.CLevel, opt => opt.MapFrom(src => src.T_C_LEVEL))
                    .ForMember(dest => dest.COrder, opt => opt.MapFrom(src => src.T_C_ORDER))
                    .ForMember(dest => dest.CParent, opt => opt.MapFrom(src => src.T_C_PARENT))
                    .ForMember(dest => dest.TreeCategoryDtos1, opt => opt.ResolveUsing(src => src.TREE_CATEGORY1))
                    .ForMember(dest => dest.TreeCategoryDtos2, opt => opt.ResolveUsing(src => src.TREE_CATEGORY2))
                    ;

                #endregion

            });

            Mapper.AssertConfigurationIsValid();
        }

在控制器

中

var result = Mapper.Map<TreeCategoryViewModel,TreeCategoryDtos>(treeCategories);

这一行是例外。为什么我收到此错误？。（缺少类型映射配置或不支持的映射。映射类型：TreeCategoryViewModel - ＆gt; TreeCategoryDtos Project.Models.ViewModel.TreeCategoryViewModel - ＆gt; Project.BusinessLayer.CategoriesBL.Dtos.TreeCategoryDtos）

现在错误消息已更改。这就是我现在得到的“ Mapper未初始化。使用适当的配置调用Initialize。如果您尝试通过容器或其他方式使用映射器实例，请确保您没有对静态Mapper.Map的任何调用。方法，如果您正在使用ProjectTo或UseAsDataSource扩展方法，请确保传入适当的IConfigurationProvider实例。“

但错误来自这个类。在我的模型映射中。

public class ModeltoDTOMappingsProfile : Profile
    {
        public ModeltoDTOMappingsProfile()
        {
                 CreateMap<TREE_CATEGORY, TreeCategoryDtos>();
                 CreateMap<TreeCategoryDtos, TREE_CATEGORY>()
                    .ForMember(dest => dest.G_MARK_FOR_DELETE, opt => opt.Ignore())
                    .ForMember(dest => dest.L_INSERTDATE, opt => opt.Ignore())
                    .ForMember(dest => dest.L_INSERTUSER, opt => opt.Ignore())
                    .ForMember(dest => dest.L_UPDATEDATE, opt => opt.Ignore())
                    .ForMember(dest => dest.L_UPDATEUSER, opt => opt.Ignore());

        }
    }

我正在使用AutomapperConfigurations在global.asax中调用我的个人资料。您可以在上面看到这些代码

Answer 1

您必须只使用此代码拨打Mapper.Initialize 一次，每次加载配置文件时都要覆盖配置。

您的个人资料应继承自Profile - 请参阅the documentation

如何在解决方案中将Automapper 4.2.1升级到6.1.1。我错过了什么？

1 个答案: