AutoFact問題請教

.net core autofac

tenno081 2022-04-26 11:03:12 ‧ 791 瀏覽

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昨天我的問題暫時解了
但目前遇到一個新的問題好像是跟AutoFac有關
我執行後會跑出這樣的錯誤

 None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type 'Service.UserService' can be invoked with the available services and parameters:

我雖然有查過但還是看不出個所以然，想請問這個問題該如何解呢?

這是我程式架構

Startup

 public void ConfigureContainer(ContainerBuilder builder)
        {
           
            builder.RegisterModule(new AutofacModuleRegister());
        }

AutofacModuleRegister

public class AutofacModuleRegister : Autofac.Module
    {
        protected override void Load(ContainerBuilder builder)
        {
            var BasePath = AppContext.BaseDirectory;
            var ServiceDll = Path.Combine(BasePath, "Service.dll");
            var RepositoryDll = Path.Combine(BasePath, "Repository.dll");

            var AssemblysServices = Assembly.LoadFrom(ServiceDll);
            builder.RegisterAssemblyTypes(AssemblysServices)
                   .AsImplementedInterfaces()
                   .InstancePerDependency();

            var AssemblysRepository = Assembly.LoadFrom(RepositoryDll);
            builder.RegisterAssemblyTypes(AssemblysRepository)
                       .AsImplementedInterfaces()
                       .InstancePerDependency();
        }
    }

我是採用Dll批量注入

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1 個回答

w4560000

iT邦研究生 5 級 ‧ 2022-04-26 14:17:35

最佳解答

針對昨天你發問的問題，我發了兩個PR 解法，供你參考看看
https://github.com/Jarkwoof/BoardCore/pulls

Autofac的問題，是因為你的Repository是泛型要另外註冊，PR的Commit可以查看

builder.RegisterGeneric(typeof(BaseRepository<>)).As(typeof(IBaseRepository<>))
                .AsImplementedInterfaces()
                .InstancePerLifetimeScope();