在.NET 5中对AutoMapper使用当前身份用户ID

// 定义源对象和目标对象
public class SourceObject
{
    // 源对象的属性
    public string SomeProperty { get; set; }
}

public class DestinationObject
{
    // 目标对象的属性
    public string SomeProperty { get; set; }
    public string UserId { get; set; }
}

// 创建自定义映射配置类
public class MappingProfile : Profile
{
    public MappingProfile()
    {
        CreateMap<SourceObject, DestinationObject>()
            .ForMember(dest => dest.UserId, opt => opt.MapFrom(src => GetCurrentUserId()));
    }

    private string GetCurrentUserId()
    {
        // 使用UserManager<TUser>服务获取当前用户ID
        var userManager = HttpContext.RequestServices.GetService<UserManager<YourUser>>();
        var userId = userManager.GetUserIdAsync(HttpContext.User).Result;
        return userId;
    }
}

// 在Startup.cs中配置AutoMapper
public void ConfigureServices(IServiceCollection services)
{
    services.AddAutoMapper(typeof(Startup));
}

// 在需要使用AutoMapper的地方注入IMapper服务
public class YourService
{
    private readonly IMapper _mapper;

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

    public void YourMethod()
    {
        // 创建源对象
        var source = new SourceObject { SomeProperty = "Value" };

        // 使用AutoMapper进行对象映射
        var destination = _mapper.Map<DestinationObject>(source);

        // 输出目标对象的属性
        Console.WriteLine(destination.SomeProperty);
        Console.WriteLine(destination.UserId);
    }
}