對於DTO和Entity之間的轉換一般我們都會採用AutoMapper來使用,當然AutoMapper也確實比較好用。
首先我們要通過nuget安裝AutoMapper.Extensions.Microsoft.DependencyInjection
我們採用的是AutoMapper 9.0跟之前的用法可能有點區別
首先創建配置文件AutoMapConfig,通過繼承Profile來實現,我們將sys_user 和sys_userDto進行對應關係的配置,加上ReverseMap()作用是雙向映射
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using AutoMapper;
using MyMis.DTO;
using MyMis.Entities;
namespace MyMis.Web.Configuration {
public class AutoMapConfig : Profile {
public AutoMapConfig() {
CreateMap<sys_user, sys_userDto>().ReverseMap();
}
}
}
然後對配置文件進行加載,在Startuup文件中ConfigureServices方法中加入如下代碼
//配置AutoMapper
services.AddAutoMapper(typeof(AutoMapConfig));
使用方法的話可以注入IMapper接口,通過IMapper來進行,並不像之前的版本通過Mapper靜態方法來實現,不過使用起來也挺方便的
using System;
using System.Collections.Generic;
using System.Text;
using MyUtility.Interface;
using MyMis.IRepository;
using MyMis.IService;
using MyMis.Entities;
using System.Linq;
using AutoMapper;
using MyMis.DTO;
using MyUtility.AutoMapper;
namespace MyMis.Service {
public class TestService : ITestService {
//註冊IMapper
private readonly IMapper _mapper;
private Isys_userRepository _sys_userRepository;
public TestService(Isys_userRepository sys_userRepository,
IMapper Mapper) {
_sys_userRepository = sys_userRepository;
_mapper = Mapper;
}
public string Show(string str) {
var name = _sys_userRepository.Where(b => b.account == str).SingleOrDefault().name;
return $"this is :{str} and name is:{name}";
}
public sys_userDto GetUser(string str) {
var q = _sys_userRepository.Where(b => b.account == str).SingleOrDefault();
var dto = _mapper.Map<sys_user, sys_userDto>(q);//_mapper.Map<sys_userDto>(q);
//var dto = q.MapTo<sys_userDto>();
return dto;
}
}
}