ASP.NET Core 3.x RESTful API学习记录--AutoMapper简单使用

1. nueget 引用  AutoMapper.Extensions.Microsoft.DependencyInjection

注册 AutoMapper

services.AddAutoMapper(typeof(ServiceProfile));

建 ServiceProfile 类 继承Profile

public class ServiceProfile : Profile
  {
      public ServiceProfile()
      {
          
          CreateMap<User, UserDto>()
              .ForMember(des=>des.UserName,opt=>opt.MapFrom(src=>src.Name));//如果映射属性名不一致用mapfrom 修改 属性一样去掉ForMember
      }
  }

在需要使用的地方注入IMapper

public class UserService{

 private IMapper _mapper;
 public UserService(IMapper mapper){
_mapper=mapper;
}

  public List<UserDto> QueryByName(string userName) {
          
           var res = this.queryBll.Query(userName);
           return _mapper.Map<List<User>, List<UserDto>>(res);
       }

}

 知识来源草根专栏 感谢杨旭大佬

更多用法请看官方文档 https://docs.automapper.org/en/stable/