我可以将AutoMapper与Blazor一起使用吗

Question

我可以将AutoMapper 8.0.1与Blazor服务器应用程序一起使用吗？我试过了，但我的代码总是遇到错误：

缺少类型映射配置或不支持的映射。映射类型：对象->Object System.Object->系统对象

我已经将映射程序添加到启动文件：

services.AddAutoMapper(typeof(Startup));

我已经创建了配置文件：

public class MyProfile : Profile
{
public MyProfile()
{
CreateMap<District, DistrictModel>();
}
}

我试着用它：

[Inject]
protected IMapper Mapper { get; set; }
District district = DistrictService.FindDistrictById(districtId);
DistrictModel model = Mapper.Map<DistrictModel>(district);

AssertConfigurationIsValid方法给出：

Cannot find any profiles with the name 'MyProfile'. (Parameter 'profileName')

Answer 1

Startup.cs

var mapperConfiguration = new MapperConfiguration(configuration =>
{
configuration.AddProfile(new MyProfile());
});
var mapper = mapperConfiguration.CreateMapper();
services.AddSingleton(mapper);

Answer 2

在启动时将其添加到您的服务中：

它是可重复使用且更清洁的

public void ConfigureServices(IServiceCollection services)
{
services.AddAutoMapper(Assembly.GetExecutingAssembly());
}

将这些添加到项目中的接口和类中

public interface IMapFrom<T>
{
void Mapping(Profile profile) => profile.CreateMap(typeof(T), GetType());
}

using AutoMapper;
using System;
using System.Linq;
using System.Reflection;
public class MappingProfile : Profile
{
public MappingProfile()
{
ApplyMappingsFromAssembly(Assembly.GetExecutingAssembly());
}
private void ApplyMappingsFromAssembly(Assembly assembly)
{
var types = assembly.GetExportedTypes()
.Where(t => t.GetInterfaces()
.Any(i =>i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMapFrom<>)))
.ToList();
foreach (var type in types)
{
var instance = Activator.CreateInstance(type);
var methodInfo = type.GetMethod("Mapping")
?? type.GetInterface("IMapFrom`1").GetMethod("Mapping");
methodInfo?.Invoke(instance, new object[] { this });
}
}
}

您的模型或视图模型：

public class District : IMapFrom<District>
{
public string PhoneNumber { get; set; }
public string Password { get; set; }
public void Mapping(Profile profile)
{
profile.CreateMap<District, DistrictModel>();
}
}