遇到InvalidOperationException: unable to resolve service for type 'microsoft.ext 这个异常时,通常表明在ASP.NET Core应用程序的依赖注入(DI)容器中缺少对某个服务的注册,或者服务注册的方式不正确。这个异常经常发生在尝试通过构造函数注入一个未注册的服务时。以下是一些步骤和建议,帮助你诊断和解决这个问题: 1. ...
InvalidOperationException: Unable to resolve service for type 'FW.BLL.UserManager' while attempting to activate 'FW.WebCoreApp.Controllers.UserController'. 解决方法是需要在StartUp的 ConfigureServices(IServiceCollection services)里面注册一下。 services.AddScoped<UserManager>(); 或者 services.AddTransient<U...
增加了 builder.Services.AddScoped<IFlowCoefficient, FlowCoefficientManageService>(); 仍无效 提示错误 改为builder.Services.AddScoped(typeof(FlowCoefficientManageService));
当遇到Unable to resolve service for type时,要考虑到接口方法是否已经注入: 例如: Unable to resolve service for type 'SaasTestDemo.Application.Queries.IChannelQuery' while attempting to activate 'SaasTestDemo.API.Controllers.ChannelController'. IChannelQuery没有注入到startup中,需添加: 又如Unable to r...
这个代码片段告诉ASP.NET Core在“/swagger”路径下启用Swagger UI,并指定Swagger JSON文件的位置。 结论 通过按照上述步骤,我们就可以成功解决“无法解析类型’Swashbuckle.AspNetCore.Swagger.ISwaggerP’的服务”错误。这个错误通常发生在我们没有正确地将Swashbuckle.AspNetCore库添加到项目中时。
System.InvalidOperationException: Unable to resolve service for type 'System.Net.Http.HttpClient' while attempting to activate 'AutoStateTransitions.Repos.RulesRepo'. at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.CreateArgumentCallSites(Type serviceType, Type implementationType, CallSite...
'InvalidOperationException: Unable to resolve service for type 'BookStoreAPI.Repository.IRepository.IAuthorRepository' while attempting to activate 'BookStoreAPI.Controllers.AuthorsController'.If I give different actioname [CreateAuthor changed into CreateAuthorGUI in BookWeb] it will work. So The ...
即:Unable to resolve service for type 'Swashbuckle.AspNetCore.Swagger.ISwaggerProvider' while attempting to Invoke middleware 'Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware'. 如果不注册Swagger,应用程序即可正常显示,但是为了让前端人员查看接口文档,还是需要进行配置Swagger,那如何解决?
Version v2.3.5 Platform .NET 8 / Windows 11 Steps to reproduce I have written a minimal code to reproduce this issue. Please try running it. using CliFx; using CliFx.Attributes; using CliFx.Exceptions; using CliFx.Infrastructure; using M...
Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbContext' while attempting to activate xxx 解决办法 由于底层类的构造函数依赖的是DbContext类,注入的是MyDbContext类,所以无法解析DbContext.需多加一行下面红色的代码 // 注册DbContext...