对于自动映射器 9.0.0：

public static IEnumerable<Type> GetAutoMapperProfilesFromAllAssemblies()
    {
        foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
        {
            foreach (var aType in assembly.GetTypes())
            {
                if (aType.IsClass && !aType.IsAbstract && aType.IsSubclassOf(typeof(Profile)))
                    yield return aType;
            }
        }
    }

MapperProfile:

public class OrganizationProfile : Profile
{
  public OrganizationProfile()
  {
    CreateMap<Foo, FooDto>();
    // Use CreateMap... Etc.. here (Profile methods are the same as configuration methods)
  }
}

在你的初创公司:

services.AddAutoMapper(GetAutoMapperProfilesFromAllAssemblies()
            .ToArray());

在控制器或服务中: 注入映射器:

private readonly IMapper _mapper;

用法:

var obj = _mapper.Map<TDest>(sourceObject);

我想明白了!细节如下:

Add the main AutoMapper Package to your solution via NuGet. Add the AutoMapper Dependency Injection Package to your solution via NuGet. Create a new class for a mapping profile. (I made a class in the main solution directory called MappingProfile.cs and add the following code.) I'll use a User and UserDto object as an example. public class MappingProfile : Profile { public MappingProfile() { // Add as many of these lines as you need to map your objects CreateMap<User, UserDto>(); CreateMap<UserDto, User>(); } } Then add the AutoMapperConfiguration in the Startup.cs as shown below: public void ConfigureServices(IServiceCollection services) { // .... Ignore code before this // Auto Mapper Configurations var mapperConfig = new MapperConfiguration(mc => { mc.AddProfile(new MappingProfile()); }); IMapper mapper = mapperConfig.CreateMapper(); services.AddSingleton(mapper); services.AddMvc(); } To invoke the mapped object in code, do something like the following: public class UserController : Controller { // Create a field to store the mapper object private readonly IMapper _mapper; // Assign the object in the constructor for dependency injection public UserController(IMapper mapper) { _mapper = mapper; } public async Task<IActionResult> Edit(string id) { // Instantiate source object // (Get it from the database or whatever your code calls for) var user = await _context.Users .SingleOrDefaultAsync(u => u.Id == id); // Instantiate the mapped data transfer object // using the mapper you stored in the private field. // The type of the source object is the first type argument // and the type of the destination is the second. // Pass the source object you just instantiated above // as the argument to the _mapper.Map<>() method. var model = _mapper.Map<UserDto>(user); // .... Do whatever you want after that! } }

使用ASP使用AutoMapper。净的核心。

步骤1。从NuGet包中安装AutoMapper.Extensions.Microsoft.DependencyInjection。

步骤2。在“解决方案”中创建一个文件夹以保存名称为“Mappings”的映射。

步骤3。添加映射文件夹后，我们添加了一个名为“MappingProfile”的类，这个名称可以是唯一的，很好理解。

在本课程中，我们将维护所有映射。

步骤4。在启动“ConfigureServices”时初始化映射器

在启动类，我们需要初始化配置文件，我们已经创建和注册AutoMapper服务。

  Mapper.Initialize(cfg => cfg.AddProfile<MappingProfile>());

  services.AddAutoMapper();

显示ConfigureServices方法的代码片段，其中我们需要初始化和注册AutoMapper。

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }


    public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<CookiePolicyOptions>(options =>
        {
            // This lambda determines whether user consent for non-essential cookies is needed for a given request.
            options.CheckConsentNeeded = context => true;
            options.MinimumSameSitePolicy = SameSiteMode.None;
        });


        // Start Registering and Initializing AutoMapper

        Mapper.Initialize(cfg => cfg.AddProfile<MappingProfile>());
        services.AddAutoMapper();

        // End Registering and Initializing AutoMapper

        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

    }}

第5步。得到的输出。

为了获得映射结果，我们需要调用AutoMapper.Mapper.Map并传递正确的目的地和源。

AutoMapper.Mapper.Map<Destination>(source);

CodeSnippet

    [HttpPost]
    public void Post([FromBody] SchemeMasterViewModel schemeMaster)
    {
        if (ModelState.IsValid)
        {
            var mappedresult = AutoMapper.Mapper.Map<SchemeMaster>(schemeMaster);
        }
    }

我用这种方式解决了它(类似于上面，但我觉得这是一个更干净的解决方案)。net Core 3.x

创建MappingProfile.cs类并使用Maps填充构造函数(我计划使用一个类来保存所有映射)

    public class MappingProfile : Profile
    {
        public MappingProfile()
        {
            CreateMap<Source, Dest>().ReverseMap();
        }
    }

在Startup.cs中，添加下面的内容以添加到DI(程序集参数用于保存映射配置的类，在我的例子中，它是MappingProfile类)。

//add automapper DI
services.AddAutoMapper(typeof(MappingProfile));

在Controller中，像使用其他DI对象一样使用它

    [Route("api/[controller]")]
    [ApiController]
    public class AnyController : ControllerBase
    {
        private readonly IMapper _mapper;

        public AnyController(IMapper mapper)
        {
            _mapper = mapper;
        }
        
        public IActionResult Get(int id)
        {
            var entity = repository.Get(id);
            var dto = _mapper.Map<Dest>(entity);
            
            return Ok(dto);
        }
    }

关于这个问题的答案， 不需要在控制器构造函数中指定IMapper映射器参数。

您可以使用Mapper，因为它是代码任何位置的静态成员。

public class UserController : Controller {
   public someMethod()
   {
      Mapper.Map<User, UserDto>(user);
   }
}

Asp。Net Core 2.2与AutoMapper.Extensions.Microsoft.DependencyInjection。

public class MappingProfile : Profile
{
  public MappingProfile()
  {
      CreateMap<Domain, DomainDto>();
  }
}

在Startup.cs

services.AddAutoMapper(typeof(List.Handler));