无法解析来自根提供商的作用域服务 'FluentValidation.IValidatorFactory'

Question

我有一个问题运行我从另一个承包商那里接管的应用程序。我已经添加了现有项目引用（在这些项目之前是托管在私有提要上的 NuGet 包）。这些包是用.net5.0写的，应用程序主要代码是netcore3.1，我不得不升级包和投影。现在，当我的应用收到任何 HTTP 请求时，我遇到了以下问题：

         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteValidator.ValidateResolution(Type serviceType, IServiceScope scope, IServiceScope rootScope)
         at Microsoft.Extensions.DependencyInjection.ServiceProvider.Microsoft.Extensions.DependencyInjection.ServiceLookup.IServiceProviderEngineCallback.OnResolve(Type
 serviceType, IServiceScope scope)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineSco
pe)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
         at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.ConstructorMatcher.CreateInstance(IServiceProvider provider)
         at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.CreateInstance(IServiceProvider provider, Type instanceType, Object[] parameters)
         at Swashbuckle.AspNetCore.SwaggerGen.ConfigureSwaggerGeneratorOptions.CreateFilter[TFilter](FilterDescriptor filterDescriptor)
         at Swashbuckle.AspNetCore.SwaggerGen.ConfigureSwaggerGeneratorOptions.<>c__DisplayClass4_0.<Configure>b__2(FilterDescriptor filterDescriptor)
         at System.Collections.Generic.List`1.ForEach(Action`1 action)
         at Swashbuckle.AspNetCore.SwaggerGen.ConfigureSwaggerGeneratorOptions.Configure(SwaggerGeneratorOptions options)
         at Microsoft.Extensions.Options.OptionsFactory`1.Create(String name)
         at Microsoft.Extensions.Options.OptionsManager`1.<>c__DisplayClass5_0.<Get>b__0()
         at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
         at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
         at System.Lazy`1.CreateValue()
         at System.Lazy`1.get_Value()
         at Microsoft.Extensions.Options.OptionsCache`1.GetOrAdd(String name, Func`1 createOptions)
         at Microsoft.Extensions.Options.OptionsManager`1.Get(String name)
         at Microsoft.Extensions.Options.OptionsManager`1.get_Value()
         at Microsoft.Extensions.DependencyInjection.SwaggerGenServiceCollectionExtensions.<>c.<AddSwaggerGen>b__0_1(IServiceProvider s)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext co
ntext)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverConte
xt context)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext co
ntext)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scop
e)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineSco
pe)
         at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
         at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.GetService(IServiceProvider sp, Type type, Type middleware)
         at lambda_method2(Closure , Object , HttpContext , IServiceProvider )
         at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.<>c__DisplayClass5_1.<UseMiddleware>b__2(HttpContext context)
         at Microsoft.AspNetCore.HostFiltering.HostFilteringMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Hosting.HostingApplication.ProcessRequestAsync(Context context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)

我检查了 FluentValidation 配置，它类似于 FV 文档。我运行没有想法:(

Answer 1

我在与 Swashbuckle 结合使用时遇到了完全相同的问题，并且在我不使用最新版本时它起作用了：

<PackageReference Include="FluentValidation.AspNetCore" Version="9.5.4" />
<PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="5.6.3" />

Answer 2

如果您在 AddSwaggerGen 内调用 AddFluentValidationRules，请尝试删除它（它已标记为已过时），而是在您的服务集合上调用 services.AddFluentValidationRulesToSwagger()。这为我解决了问题。

无法解析来自根提供商的作用域服务 'FluentValidation.IValidatorFactory'

Cannot resolve scoped service 'FluentValidation.IValidatorFactory' from root provider

fluentvalidation

swashbuckle

asp.net-core

.net-5