.NET CORE中使用AutoMapper进行对象映射的方法

简介

AutoMapper uses a fluent configuration API to define an object-object mapping strategy. AutoMapper uses a convention-based matching algorithm to match up source to destination values. AutoMapper is geared towards model projection scenarios to flatten complex object models to DTOs and other simple objects, whose design is better suited for serialization, communication, messaging, or simply an anti-corruption layer between the domain and application layer.

官网：http://automapper.org/

文档：https://automapper.readthedocs.io/en/latest/index.html

GitHub：https://github.com/AutoMapper/AutoMapper/blob/master/docs/index.rst

平台支持：

• .NET 4.6.1+
• .NET Standard 2.0+ https://docs.microsoft.com/en-us/dotnet/standard/net-standard

使用

Nuget安装

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AutoMapper  
AutoMapper.Extensions.Microsoft.DependencyInjection //依赖注入AutoMapper，需要下载该包。

在Startup中添加AutoMapper

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public void ConfigureServices(IServiceCollection services)
{
 services.AddMvc();
 //添加对AutoMapper的支持
 services.AddAutoMapper();
}

创建AutoMapper映射规则

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public class AutoMapperConfigs:Profile
{
 //添加你的实体映射关系.
 public AutoMapperConfigs()
 {
  CreateMap<DBPoundSheet, PoundSheetViewModel>();
  CreateMap<PoundSheetViewModel, DBPoundSheet>();
 }
}

在构造函数中注入你的IMapper

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IMapper _mapper;

public PoundListController(IMapper mapper)
{
 _mapper = mapper;
}

单个对象转换

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//typeof(model)="PoundSheetViewModel"
DBPoundSheet dBPoundSheet = _mapper.Map<DBPoundSheet>(model);

集合对象转换

总结

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最后

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