AutoMapper是一个用于对象映射和类型转换的.NET库。在使用AutoMapper进行实体映射时,我们可能需要将ValueObject映射为目标类型中的一些属性。
以下示例展示了如何在使用AutoMapper时将ValueObject映射为目标类型属性:
public class OrderDto
{
public int Id { get; set; }
public AddressDto ShippingAddress { get; set; }
}
public class AddressDto
{
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
public string ZipCode { get; set; }
}
public class Order
{
public int Id { get; set; }
public Address ShippingAddress { get; set; }
}
public class Address
{
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
public string ZipCode { get; set; }
}
public class AddressConverter : IValueConverter
{
public AddressDto Convert(Address sourceMember, ResolutionContext context)
{
if (sourceMember == null) return null;
return new AddressDto
{
Street = sourceMember.Street,
City = sourceMember.City,
State = sourceMember.State,
ZipCode = sourceMember.ZipCode
};
}
}
public class MappingProfile : Profile
{
public MappingProfile()
{
CreateMap()
.ForMember(dest => dest.ShippingAddress, opt => opt.MapFrom(src => src.ShippingAddress));
CreateMap().ConvertUsing();
}
}
// 在应用程序启动时注册MappingProfile
var mapperConfig = new MapperConfiguration(cfg =>
{
cfg.AddProfile();
});
IMapper mapper = new Mapper(mapperConfig);
// 使用AutoMapper实现实体映射
var order = new Order
{
Id = 1,
ShippingAddress = new Address
{
Street = "123 Main St",
City = "Anytown",
State = "MA",
ZipCode = "12345"
}
};
var orderDto = mapper.Map(order);
// 输出映射结果
Console.WriteLine(orderDto.Id);
Console.WriteLine(orderDto.ShippingAddress.Street);
Console.WriteLine(orderDto.ShippingAddress.City);
Console.WriteLine(orderDto.ShippingAddress.State);
Console.WriteLine(orderDto.ShippingAddress.ZipCode);
在上面的示例中,创建了一个名为MappingProfile
的类,其中定义了如何将Address
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