映射后返回内容错误（Automapper .NET Core）

Question

我使用自动映射器从实体映射到dto。

在appservice方法中，我需要从数据库获取所有值并将其推送到列表

这是我的方法

 public class ExperienceAppService : IExperience
{
    private readonly ApplicationDbContext _context;
    private readonly IMapper _mapper;

    public ExperienceAppService(ApplicationDbContext context,
        IMapper mapper)
    {
        _context = context;
        _mapper = mapper;
    }

    public async Task<List<ExperienceListDto>> GetExperiences()
    {
        var experiences = await _context.Experiences
            .ProjectTo<ExperienceListDto>(_mapper.ConfigurationProvider)
            .ToListAsync();
        return experiences;
    }

}

这是映射配置文件

 public class MappingsProfile : Profile
{
    public MappingsProfile()
    {
        CreateMap<UserDto, User>();

        #region Experiences

        CreateMap<ExperienceDto, Experience>();
        CreateMap<Experience, ExperienceDto>().ForMember(x => x.Name,
                opt => opt.MapFrom(n => n.Name))
            .ForMember(x => x.City, opt => opt.MapFrom(c => c.City))
            .ForMember(x => x.Price, opt => opt.MapFrom(c => c.Price))
            .ForMember(x => x.Rating, opt => opt.MapFrom(c => c.Rating));

        #endregion
    }
}

这是我在Startup.cs中注册的方式

services.AddMvc().AddJsonOptions(options =>
            {
                options.SerializerSettings.ContractResolver =
                    new CamelCasePropertyNamesContractResolver();
                options.SerializerSettings.ReferenceLoopHandling =
                    ReferenceLoopHandling.Ignore;
            })
            .SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
        //Mapper.Initialize(cfg => cfg.AddProfile<MappingsProfile>());
        services.AddAutoMapper();

我的问题是，作为回应，我收到了这样的文字

{“ stateMachine”：{“ <> 1__state”：0，“ <> t__builder”：{}，“ <> 4__this”：{}}，“上下文”：{}，“ moveNextAction”：{“方法”：{ “名称”：“ MoveNext”，“ 1+AsyncStateMachineBox ”：“ System.Runtime.CompilerServices.AsyncTaskMethodBuilder 1+AsyncStateMachineBox 1 [[System.Collections.Generic.List 1[[TooSeeWeb.Core.DtoModels.Experiences.ExperienceListDto, TooSeeWeb.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[TooSeeWeb.Infrastructure.AppServices.Experiences.ExperienceAppService+<GetExperiences>d__3, TooSeeWeb.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e", "reflectedType": "System.Runtime.CompilerServices.AsyncTaskMethodBuilder 1 + AsyncStateMachineBox 1[[System.Collections.Generic.List 1 [[TooSeeWeb.Core.DtoModels.Experiences.ExperienceListDto，TooSeeWeb.Core，Version = 1.0.0.0，Culture = neut ral，PublicKeyToken = null]]，System.Private.CoreLib，版本= 4.0.0.0，文化=中性，PublicKeyToken = 7cec85d7bea7798e]，[TooSeeWeb.Infrastructure.AppServices.Experiences.ExperienceAppService + d__3，TooSeeWeb.Infrastructure，版本= 1.0。 0.0，Culture = neutral，PublicKeyToken = null]]，System.Private.CoreLib，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = 7cec85d7bea7798e“，” memberType“：8，” metadataToken“：100682290，” module“：{ “ mdStreamVersion”：131072，“ fullyQualifiedName”：“ /usr/local/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Private.CoreLib.dll"，"moduleVersionId"："9aeda1ea-7722- 4ca6-a7ca-c000af27dec0“，” metadataToken“：1，

更多的代码，最后，我从方法中获取值。 我的问题在哪里？

Answer 1

我的问题不在mapper中。 在Controller中，我正在返回这样的列表

    [HttpGet]
    public IActionResult GetExperiences()
    {
        var experiences = _experienceAppService.GetExperiences();
        return Ok(experiences);
    }

代替这个

    [HttpGet]
    public IActionResult GetExperiences()
    {
        var experiences = _experienceAppService.GetExperiences();
        return Ok(experiences.Result);
    }