Mapper已初始化

Question

我有一个3层架构Web Api解决方案，里面有3个项目：数据，业务和表示层。我需要在两个业务和表示层中初始化两个不同的映射器。

我已经创建了一个静态类和方法来初始化业务逻辑中的一个映射器：

using AutoMapper;
using Shop.BLL.DTOModels;
using Shop.DAL.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Shop.BLL.InitMapper
{
    public static class InitializeMapperBLL
    {
        public static void RegisterMappings()
        {
            Mapper.Initialize(cfg => cfg.CreateMap<Category, DTOCategoryModel>());
        }
    }
}

并称之为：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Shop.DAL.Repositories;
using AutoMapper;
using Shop.BLL.DTOModels;
using Shop.DAL.Models;
using Shop.BLL.Interfaces;
using Shop.DAL.Interfaces;
using Shop.BLL.InitMapper;

namespace Shop.BLL.Services
{
    public class CategoryService : ICategoryService
    {
        IUnitOfWork Database { get; set; }

        public CategoryService(IUnitOfWork uow)
        {
            Database = uow;
        }

        public IEnumerable<DTOCategoryModel> GetCategories()
        {
//I call it here
            InitializeMapperBLL.RegisterMappings();

            return Mapper.Map<IEnumerable<Category>, List<DTOCategoryModel>>(Database.Categories.GetAll());
        }
        public void Dispose()
        {
            Database.Dispose();
        }


    }
}

在表示层我做同样的事情：

using AutoMapper;
using Shop.API.ViewModels;
using Shop.BLL.DTOModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Shop.API.MapperInit
{
    public static class InitializeMapperAPI
    {
        public static void RegisterMappings()
        {
            Mapper.Initialize(cfg => cfg.CreateMap<DTOCategoryModel, CategoryViewModel>());
        }
    }
}

并调用Global.asax

protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            GlobalConfiguration.Configure(WebApiConfig.Register);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
      //here I call it
            InitializeMapperAPI.RegisterMappings();

            CreateKernel();
        }

我已经初始化了错误Mapper。您必须为每个应用程序域/进程调用一次Initialize。

如何解决这个问题呢？