NETCORE - AutoMappper 对象映射

NETCORE - AutoMappper 对象映射

 创建项目 .net6 web api ：NETCORE.TAutoMappper

引用 nuget 包 ： 

AutoMapper.Extensions.Microsoft.DependencyInjection

 

 

 

创建两个类： model 与 dto 的映射

namespace NETCORE.TAutoMappper
{

    public class StudentModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int StudentId { get; set; }
        public int age { get; set; }
    }

    public class StudentDto
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public bool? gender { get; set; }
    }

}

 

 

创建 MapperProfile.cs 类 

using AutoMapper;
using static NETCORE.TAutoMappper.MapperProfile;

namespace NETCORE.TAutoMappper
{
    //要继承AutoMapper的Profile
    public class MapperProfile : Profile
    {
        //构造函数
        public MapperProfile()
        {
            //这里写映射规则
            CreateMap<StudentDto, StudentModel>();
            CreateMap<StudentModel, StudentDto>();
        }
    }
}

 

Program.cs里添加 AutoMapper

builder.Services.AddAutoMapper(typeof(MapperProfile));

 

在需要使用的类的构造函数中，注入AutoMapper

创建 webapi 控制器：ValuesController.cs

using AutoMapper;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace NETCORE.TAutoMappper.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class ValuesController : ControllerBase
    {
        public IMapper Mapper;
        public ValuesController(IMapper mapper)
        {
            Mapper = mapper;
        }

        [HttpGet]
        [Route("testc")]
        public void testc()
        {
            var studentDto = new StudentDto() { Id = 1, Name = "张三", gender = false };
            var studentModel = Mapper.Map<StudentModel>(studentDto);


            var sModel = new StudentModel() { Id = 2, Name = "李四", age = 22 };
            var sDto = Mapper.Map<StudentDto>(sModel);
        }
    }
}

 

 

自定义映射，修改名称

 样例：如需把 Dto 映射到 model

    public class cModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
    }

    public class cDto
    {
        public int Id { get; set; }
        public string FullName { get; set; }
        public string Description { get; set; }
    }

 

配置映射关系

    public class MapperProfile : Profile
    {
        public MapperProfile()
        {
            //这里写映射规则
            CreateMap<cDto, cModel>().ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.FullName));
        }
    }

 

 测试

var dto = new cDto() { Id = 3, FullName = "张三", Description = "cccc" };
var model = Mapper.Map<cModel>(dto);

 

 复杂映射

 样例类：

   public partial class Sence
    {
        public Sence()
        {
            Tilesets = new HashSet<Tileset>();
        }
       　 public long Id { get; set; }
　　　　　　public string? Name { get; set; }
　　　　　　public string? TileSetUrlCesium { get; set; }
　　　　　　public virtual ICollection<Tileset> Tilesets { get; set; }
    }

   public partial class Tileset
    {
        public long Id { get; set; }
        public string? Url { get; set; }
    }
 

 

 

 

   public class SenceInfo
    {
        public SenceInfo()
        {
            tileSetInfos = new List<TileSetInfo>();
        }
        public long Id { get; set; }
        public string Name { get; set; }
        public List<string?> TileSetUrlCesium { get; set; }public List<TileSetInfo> tileSetInfos { get; set; }
    }

    public class TileSetInfo
    {
        public long Id { get; set; }
        public string? Url { get; set; }
        public string? Group { get; set; }
    }

 

 

映射配置

        public MapperProfile()
        {
            //这里写映射规则
            CreateMap<Sence, SenceInfo>().ForMember(dest => dest.tileSetInfos, opt => opt.MapFrom(src => src.Tilesets))
                .AfterMap((source, dest) => { dest.TileSetUrlCesium = source.Tilesets.Select(t => t.Url).Distinct().ToList(); });
            CreateMap<Tileset, TileSetInfo>();

        }

 

 

 

使用：

            var resData = Mapper.Map<SenceInfo>(model);

 

 

 

映射时传入数据

 映射：源（a_notice_renew），结果（ResNoticeRenewInfoUse）

如结果类中有isRead字段，需要在映射时写入

CreateMap<a_notice_renew, ResNoticeRenewInfoUse>().ForMember(dest => dest.isRead, opt => opt.MapFrom((src, dest, destMember, context) => context.Items["isRead"]));

 映射代码

var dto = Mapper.Map<a_notice_renew, ResNoticeRenewInfoUse>(arr[0], opt => opt.AfterMap((src, dest) => dest.isRead = src.cognition.Contains(""))); 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

引用：https://www.dongchuanmin.com/net/1398.html