AutoMapper的简单使用

1. 第一种方法,推荐!

添加一个功能类

using AutoMapper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AutoMapperTest2
{
    public static class AutoMapperConfig
    {
        public static IMapper Mapper = new Mapper(RegisterMappings());

        public static MapperConfiguration RegisterMappings()
        {
            return new MapperConfiguration(cfg =>
            {
                cfg.CreateMissingTypeMaps = true;
                cfg.AllowNullDestinationValues = false;
                cfg.ForAllPropertyMaps(IsToRepeatedField, (propertyMap, opts) => opts.UseDestinationValue());
                cfg.ForAllPropertyMaps(IsToMapFieldField, (propertyMap, opts) => opts.UseDestinationValue());

                cfg.AddProfile<OutputModels>();
            });

            bool IsToRepeatedField(PropertyMap pm)
            {
                if (pm.DestinationPropertyType.IsConstructedGenericType)
                {
                    var destGenericBase = pm.DestinationPropertyType.GetGenericTypeDefinition();
                    return false;// destGenericBase == typeof(RepeatedField<>);
                }
                return false;
            }

            bool IsToMapFieldField(PropertyMap pm)
            {
                if (pm.DestinationPropertyType.IsConstructedGenericType)
                {
                    var destGenericBase = pm.DestinationPropertyType.GetGenericTypeDefinition();
                    return false;// destGenericBase == typeof(MapField<,>);
                }
                return false;
            }
        }
    }

    public class OutputModels : Profile
    {
        public OutputModels()
        {
        }
    }
}

使用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AutoMapperTest2
{
    class Program
    {
        static void Main(string[] args)
        {
            var src = new source() {
                name = "jeff",
                age  = 1,
                strList = new List<string>() { "1", "2", "3"},
                classList = new List<aaa>()
                {
                    new aaa(){a1="a1", a2=1},
                     new aaa(){a1="a2", a2=2},
                      new aaa(){a1="a3", a2=3},
                }
            };
            var tgt = AutoMapperConfig.Mapper.Map<target>(src);
            if (tgt != null)
                Console.WriteLine($"name = {tgt.name}");
        }
    }

    public class source
    {
        public string name { get; set; }
        public int age { get; set; }
        public List<string> strList { get; set; }
        public List<aaa> classList { get; set; }
    }

    public class target
    {
        public string name { get; set; }
        public int age { get; set; }
        public List<string> strList { get; set; }
        public List<aaa> classList { get; set; }


    }

    public class aaa
    {
        public string a1 { get; set; }
        public int a2 { get; set; }
    }
}

 

 

2. 第二种方法:

添加功能类

using AutoMapper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace TCG.DataCollection.Webservice { public sealed class Mapper { private static readonly Mapper instance = new Mapper(); private Mapper() { this.Init(); } public void Init() { AutoMapper.Mapper.Initialize(cfg => { departmentMapping(cfg); this.employeeMapping(cfg);this.defaultMapping<JobCoder, JobCodeModel>(cfg); this.defaultMapping<EmployeeTerminationData, EmployeeTerminationDataModel>(cfg); this.vestingMapping(cfg); }); } public static Dest Map<Src, Dest>(Src src) { if (instance != null) return AutoMapper.Mapper.Map<Src, Dest>(src); else throw new Exception("Automapper not initialized."); // TODO: 错误信息需集中定义。 } /// <summary> /// 提供默认的类型映射,双向映射,依据属性名称 /// </summary> /// <typeparam name="T1"></typeparam> /// <typeparam name="T2"></typeparam> /// <param name="cfg"></param> private void defaultMapping<T1, T2>(IMapperConfigurationExpression cfg) { cfg.CreateMap<T1, T2>(); cfg.CreateMap<T2, T1>(); } private void departmentMapping(IMapperConfigurationExpression cfg) { cfg.CreateMap<Department, DepartmentModel>() .ForMember(dest => dest.ParentDepartmentCode, options => options.MapFrom(src => string.IsNullOrWhiteSpace(src.ParentDepartmentCode) ? src.DepartmentCode : src.ParentDepartmentCode)); cfg.CreateMap<DepartmentModel, Department>() .ForMember(dest => dest.ParentDepartmentCode, options => options.MapFrom(src => src.ParentDepartmentCode)); } private void vestingMapping(IMapperConfigurationExpression cfg) { cfg.CreateMap<Vesting, VestingModel>() .ForMember(dest => dest.VestingDate, options => options.ResolveUsing<DateTime>(src => this.convertDate(src.VestingDate).GetValueOrDefault())); } private void grantMapping(IMapperConfigurationExpression cfg) { cfg.CreateMap<Grant, GrantModel>() .ForMember(dest => dest.GrantDate, options => options.ResolveUsing<DateTime>(src => { return this.convertDate(src.GrantDate).GetValueOrDefault(); })) .ForMember(dest => dest.GrantType, options => options.ResolveUsing<string>(src => this.convertGrantType(src.GrantType))) .ForMember(dest => dest.IsPerformanceBased, options => options.ResolveUsing<bool>(src => string.Equals(src.IsPerformanceBased, "Y", StringComparison.OrdinalIgnoreCase))); } private void reinstatementMapping(IMapperConfigurationExpression cfg) { cfg.CreateMap<ReinstatementData, ReinstatementDataModel>() .ForMember(dest => dest.ReinstatementDate, options => options.ResolveUsing<DateTime>(src => this.convertDate(src.ReinstatementDate).GetValueOrDefault())) .ForMember(dest => dest.Type, options => options.UseValue<ReinstatementType>(ReinstatementType.R)); } private void employeeMapping(IMapperConfigurationExpression cfg) { cfg.CreateMap<Employee, EmployeeModel>() .ForMember(dest => dest.SAFEforSubsequentSalse, options => options.ResolveUsing<string>(src => string.Equals(src.SAFEforSubsequentSalse, "Y", StringComparison.OrdinalIgnoreCase) ? "1" : string.Empty)); } private DateTime? convertDate(string date) { if (string.IsNullOrEmpty(date)) return null; var year = int.Parse(date.Substring(0, 4)); var month = int.Parse(date.Substring(4, 2)); var day = int.Parse(date.Substring(6, 2)); return new DateTime(year, month, day); } } }

使用时

var model = Mapper.Map<Employee, EmployeeModel>(data);

 

AutoMapper的简单使用

上一篇:EF(EF Core)中的NotMappedAttribute(转载)


下一篇:【转载】C#通过InsertAt方法在DataTable特定位置插入一条数据