我想使用Automapper将UTC的所有日期时间转换为本地时间,但我需要将接口注入ITypeConverter ...我在运行应用程序时收到此错误:MissingMethodException:没有为此对象定义的无参数构造函数。使用ITypeConverter的AutoMapper依赖注入
我认为问题是依赖注入代码!
任何人都可以帮到我吗?
UserRepository:
public class UserRepository : IUserRepository
{
private static readonly MapperConfiguration Config = new MapperConfiguration(cfg =>
{
cfg.CreateMap<User, User>();
cfg.CreateMap<DateTime?, DateTime?>().ConvertUsing<UtcToLocalConverter>();
});
public List<User> GetById(string[] ids)
{
var result = BuildQuery().Where(w => ids.Contains(w.UserName)).ToList();
var mapper = Config.CreateMapper();
return mapper.Map<List<User>>(result); // Throws error !!!
}
#region Helper
private IQueryable<User> BuildQuery()
{
return Settings.EpedDb.User;
}
#endregion
}
转换
public class UtcToLocalConverter : ITypeConverter<DateTime?, DateTime?>
{
public UtcToLocalConverter(IBaseSettings baseClass) // I tried to inject here!!!
{
Settings = baseClass;
}
private IBaseSettings Settings { get; }
public DateTime? Convert(DateTime? source, DateTime? destination, ResolutionContext context)
{
if (source == null) return null;
var tzi = TimeZoneInfo.FindSystemTimeZoneById(Settings.UserData.TimeZone);
return TimeZoneInfo.ConvertTime(DateTime.SpecifyKind((DateTime)source, DateTimeKind.Utc), tzi);
}
}
请不要将代码作为截图图像发布。您是否可以将相关代码复制并粘贴到您的问题中? –
@NateBarbettini谢谢你的建议!你怎么看待这件事? – JhobanyPena