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在ASP.NET核心中配置automapper

automapper-8 asp.net-core-2.2 automapper

1

Jeremie de Vos · 技术社区 · 7 年前

我正在尝试使用automapper 8.0.0来填充 WorkViewModel . 此列表正在从 Work 使用实体框架从数据库中类。

初始化时出现问题的原因是引发以下错误:

InvalidOperationException:映射器未初始化

我做错什么了?

我已经设置了以下代码!

创业公司

services.AddAutoMapper();

正在调用的函数:

public async Task<IEnumerable<WorkViewModel>> GetAllAsync()
{
    IList<Work> works = await _context.Work.ToListAsync();

    IList<WorkViewModel> viewModelList = Mapper.Map<IList<Work>, IList<WorkViewModel>>(works);

    return viewModelList;
}

配置:

public class MappingProfile : Profile
{
    public MappingProfile()
    {
        Mapper.Initialize(cfg =>
        {
            cfg.CreateMap<WorkViewModel, Work>();
        });
    }
}

WorkViewModel:

public class WorkViewModel
{
    public int WorkID { get; set; }
    public string Name { get; set; }
    public byte[] Tumbmail { get; set; }
    public string Discription { get; set; }

    public string Client { get; set; }
    public DateTime Date { get; set; }
    public string PreviewLink { get; set; }
    public string GitLink { get; set; }
    public string DownloadLink { get; set; }

    public int DetailID { get; set; }
    public byte[] Banner { get; set; }
    public string Documentation { get; set; }

    public int CategoryID { get; set; }
    public string Category { get; set; }
}

工作模式:

public class Work
{
    [Key]
    public int WorkID { get; set; }

    [Display(Name = "Project Name")]
    public string Name { get; set; }

    [Display(Name = "Client name")]
    public string Client { get; set; }

    [Display(Name = "Description")]
    public string Discription { get; set; }

    [Display(Name = "Date")]
    public DateTime Date { get; set; }

    [Display(Name = "Thumbmail")]
    public byte[] Tumbmail { get; set; }

    [Display(Name = "Preview Link")]
    public string PreviewLink { get; set; }

    [Display(Name = "Git Link")]
    public string GitLink { get; set; }

    [Display(Name = "DownloadLink")]
    public string DownloadLink { get; set; }


    public WorkCategory workCategory { get; set; }
    public WorkDetailed WorkDetailed { get; set; }
}

1 回复 | 直到 7 年前

1

-1

TanvirArjel 7 年前

只增加 services.AddAutoMapper(); 到 ConfigureServices 方法不适用于您。您必须配置 AutoMapper 如下:

public void ConfigureServices(IServiceCollection services)
{
   // Auto Mapper Configurations
    var mappingConfig = new MapperConfiguration(mc =>
    {
        mc.AddProfile(new MappingProfile());
    });

    IMapper mapper = mappingConfig.CreateMapper();
    services.AddSingleton(mapper);

    services.AddMvc();
}

也别忘了安装 AutoMapper.Extensions.Microsoft.DependencyInjection NuGET包。