Autofac.Core.DependencyResolutionException: An exception was thrown while activating Castle.Proxies.MiniProgramAppServiceProxy.

 DbSet 不加访问修饰符，调用接口会出现如下的问题：

2021-05-18 14:43:17.937 +08:00 [ERR] An exception was thrown while activating Castle.Proxies.MiniProgramAppServiceProxy.
Autofac.Core.DependencyResolutionException: An exception was thrown while activating Castle.Proxies.MiniProgramAppServiceProxy.
---> Autofac.Core.DependencyResolutionException: None of the constructors found with 'Volo.Abp.Autofac.AbpAutofacConstructorFinder' on type 'Castle.Proxies.MiniProgramAppServiceProxy' can be invoked with the available services and parameters:
Cannot resolve parameter 'Volo.Abp.Domain.Repositories.IRepository`2[Wechat.Dung.Beetle.WeChatManagement.MiniPrograms.MiniProgram,System.Guid] repositoryMiniProgram' of constructor 'Void .ctor(Castle.DynamicProxy.IInterceptor[], Volo.Abp.Domain.Repositories.IRepository`2[Wechat.Dung.Beetle.WeChatManagement.MiniPrograms.MiniProgram,System.Guid])'.
at Autofac.Core.Activators.Reflection.ReflectionActivator.GetAllBindings(ConstructorBinder[] availableConstructors, IComponentContext context, IEnumerable`1 parameters)
at Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters)
at Autofac.Core.Activators.Reflection.ReflectionActivator.<ConfigurePipeline>b__11_0(ResolveRequestContext ctxt, Action`1 next)
at Autofac.Core.Resolving.Middleware.DisposalTrackingMiddleware.Execute(ResolveRequestContext context, Action`1 next)
at Autofac.Builder.RegistrationBuilder`3.<>c__DisplayClass41_0.<PropertiesAutowired>b__0(ResolveRequestContext ctxt, Action`1 next)
at Autofac.Core.Resolving.Middleware.ActivatorErrorHandlingMiddleware.Execute(ResolveRequestContext context, Action`1 next)
--- End of inner exception stack trace ---
at Autofac.Core.Resolving.Middleware.ActivatorErrorHandlingMiddleware.Execute(ResolveRequestContext context, Action`1 next)
at Autofac.Builder.RegistrationBuilder`3.<>c__DisplayClass35_0.<OnPreparing>b__0(ResolveRequestContext ctxt, Action`1 next)
at Autofac.Core.Resolving.Middleware.CoreEventMiddleware.Execute(ResolveRequestContext context, Action`1 next)
at Autofac.Core.Resolving.Middleware.SharingMiddleware.Execute(ResolveRequestContext context, Action`1 next)
at Autofac.Core.Resolving.Middleware.CircularDependencyDetectorMiddleware.Execute(ResolveRequestContext context, Action`1 next)
at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, ResolveRequest request)
at Autofac.Core.Resolving.ResolveOperation.ExecuteOperation(ResolveRequest request)
at Autofac.ResolutionExtensions.TryResolveService(IComponentContext context, Service service, IEnumerable`1 parameters, Object& instance)
at Autofac.ResolutionExtensions.ResolveService(IComponentContext context, Service service, IEnumerable`1 parameters)
at Microsoft.AspNetCore.Mvc.Controllers.ServiceBasedControllerActivator.Create(ControllerContext actionContext)
at Microsoft.AspNetCore.Mvc.Controllers.ControllerFactoryProvider.<>c__DisplayClass5_0.<CreateControllerFactory>g__CreateController|0(ControllerContext controllerContext)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextExceptionFilterAsync>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
2021-05-18 14:43:17.990 +08:00 [ERR] ---------- Exception Data ----------
ActivatorChain = Castle.Proxies.MiniProgramAppServiceProxy

实体类映射逐一排查、网上搜索说有可能没有加DbSet导致的，后来排查有加DbSet，只是没有访问修饰符，怀疑是这个原因导致的，加上问题解决，特此记录，避免后续踩坑

上次的这个原因是因为实体类与Dto映射的字段类型不匹配导致的。

 

最后加上访问修饰符
public DbSet<MiniProgram> MiniPrograms { get; set; }