ASP.NET Core扩展库之实体映射使用详解

  using IHost host = Host.CreateDefaultBuilder()
             // UseExtensions会自动注入Mapper
             .UseExtensions()
             .ConfigureServices(sc =>
             {
               // 通过ConfigureLightweightMapper来配置映射
               sc.ConfigureLightweightMapper(options =>
               {
                //
               });
             })
             .Build();

  //实体转换
  serviceDescriptors.AddLightweightMapper()
    .ConfigureLightweightMapper(options =>
               {
                //
               });

  //实体转换
  serviceDescriptors.AddLightweightMapper()
    .ConfigureLightweightMapper(options =>
    {
      // 通过AddConvert可自定义转换逻辑
      // 以下定义从SourceA转换到TargetB时，自动设置属性C的值
      options.AddConvert<SourceA, TargetB>((mapper, a, b) =>
      {
        b.C = "C";
      });
    });

// 通过IMapperProvider
var mapperProvider = host.Services.GetRequiredService<IMapperProvider>();
var mapper = mapperProvider.GetMapper<SourceA, TargetA>();
var targetA = mapper.Convert(sourceA);

var mapperB = host.Services.GetRequiredService<IMapper<SourceA, TargetB>>();
var targetB = mapperB.Convert(sourceA);

var mapperB = host.Services.GetRequiredService<IMapper<SourceA, TargetB>>();
var targetB1 = new TargetB();
mapperB.CopyTo(sourceA, targetB1);

var mapperB = host.Services.GetRequiredService<IMapper<SourceA, TargetB>>();
 // 只拷贝指定字段之外的属性
var copyProc = mapperB.DefineCopyTo(a =>
new
{
  a.A //忽略属性A
});
var targetB2 = new TargetB();
copyProc(sourceA, targetB2);