net core 3.1 webapi的开发遇到的问题

public interface IRepositoryFactory
    {
        IRepository CreateRepository(IPreschoolEducationOnlineDBContext dataContext) where T : class;
    }

 public class RepositoryFactory : IRepositoryFactory
    {
        public IRepository CreateRepository(IPreschoolEducationOnlineDBContext dataContext) where T : class
        {
            return new Repository(dataContext);
        }
    }

public class Repository : IRepositorywhere T : class
    {
        private readonly PreschoolEducationOnlineDBContext preschoolEducationOnlineDBContext;

        private readonly DbSet dbset;
        public Repository(IPreschoolEducationOnlineDBContext _preschoolEducationOnlineDBContext)
        {
            preschoolEducationOnlineDBContext = _preschoolEducationOnlineDBContext as PreschoolEducationOnlineDBContext;
            dbset = preschoolEducationOnlineDBContext.Set();
        }
}

services.AddScoped();
            services.AddScoped();

 foreach (var item in GetClassName("PreschoolEducationOnline.Service"))
            {
                {
                    foreach (var typeArray in item.Value)
                    {
                        if (item.Key == typeof(Service.Interface.IBaseService))
                        {
                            continue;
                        }
                        services.AddScoped(typeArray, item.Key);
                    }
                }
                services.AddMvc().AddNewtonsoftJson(options =>
                {
                    options.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.DefaultContractResolver();
                    options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
                    options.SerializerSettings.Formatting = Formatting.Indented;
                    options.SerializerSettings.DateFormatString = "yyyy-MM-dd";
                }).SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
            }



Dictionary GetClassName(string assemblyName)
        {
            if (!String.IsNullOrEmpty(assemblyName))
            {
                Assembly assembly = Assembly.Load(assemblyName);
                List ts = assembly.GetTypes().ToList();

                var result = new Dictionary();
                foreach (var item in ts.Where(s => !s.IsInterface))
                {
                    var interfaceType = item.GetInterfaces();
                    result.Add(item, interfaceType);
                }
                return result;
            }
            return new Dictionary();
        }