My line of code that gives errors and builds: var app = builder.Build();

My ApplicationServiceRegister class:

 public static IServiceCollection AddApplicationServices(this IServiceCollection services)
        {
            services.AddAutoMapper(Assembly.GetExecutingAssembly());
            services.AddMediatR(Assembly.GetExecutingAssembly());

            services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
            services.AddTransient(typeof(IPipelineBehavior<,>), typeof(AuthorizationBehavior<,>));
            services.AddTransient(typeof(IPipelineBehavior<,>), typeof(CachingBehavior<,>));
            services.AddTransient(typeof(IPipelineBehavior<,>), typeof(CacheRemovingBehavior<,>));
            services.AddTransient(typeof(IPipelineBehavior<,>), typeof(LoggingBehavior<,>));
            services.AddTransient(typeof(IPipelineBehavior<,>), typeof(RequestValidationBehavior<,>));

            
            services.AddScoped<IAuthService, AuthManager>();
            services.AddScoped<IUserService, UserManager>();

            services.AddSingleton<LoggerServiceBase, FileLogger>();

            return services;
        }

Error Output:

System.AggregateException: 'Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: MediatR.IRequestHandler2[Application.Feature.Auths.Commands.Register.RegisterCommand,Application.Feature.Auths.Dtos.RegisteredDto] Lifetime: Transient ImplementationType: Application.Feature.Auths.Commands.Register.RegisterCommand RegisterCommandHandler': Unable to resolve service for type 'Core.Security.JWT.TokenOptions' while attempting to activate 'Application.Service.AuthService.AuthManager'.) (Error while validating the service descriptor 'ServiceType: MediatR.IRequestHandler2

I dwelt on the possibility of a bug with Dependency Injection, but I didn't see a problem.

CodePudding user response：

Your AuthManager probably requires a parameter in the constructor TokenOptions, which is not registered.

If you want to make this work you also have to register the TokenOptions in the DI, before adding the AuthManager to the DI.

var options = new TokenOptions(...);
services.AddSingleton(typeof(TokenOptions), options);

CodePudding user response：

Like @rotgers said you are probably missing some constructor parameter that the AuthManager is expecting. You need to register said parameter in the services container so it is available for AuthManager.