我有一個 ASP.NET Core API，我正在嘗試將 FluentValidation 與 Mediatr 一起使用。當前，當控制器方法嘗試在它生成的 mediatr 實例上調用 Send 時：拋出的異常：Microsoft.Extensions.DependencyInjection.dll 中的“System.InvalidOperationException”：“嘗試激活‘GetApplicationQueryValidator’時無法解析‘GetApplicationQuery’類型的服務?！辈樵?、驗證器和響應類如下所示：public class GetApplicationQuery : IRequest<Response>{    private string _name;    public GetApplicationQuery(string name)    {        _name = name;    }    public string Name { get { return _name; } }}public class GetApplicationQueryHandler : IRequestHandler<GetApplicationQuery, Response>{    public GetApplicationQueryHandler() { }    public async Task<Response> Handle(GetApplicationQuery request, CancellationToken cancellationToken)    {        return new Response("yadda yadda");                }}public class GetApplicationQueryValidator : AbstractValidator<GetApplicationQuery>{    public GetApplicationQueryValidator(GetApplicationQuery request)    {           RuleFor(m => m.Name).MinimumLength(30).WithMessage("Name must be greater than 30 characters, long");    }}public class Response{    private readonly IList<string> _messages = new List<string>();    public IEnumerable<string> Errors { get; }    public object Result { get; }    public Response() => Errors = new ReadOnlyCollection<string>(_messages);    public Response(object result) : this() => Result = result;    public Response AddError(string message)    {        _messages.Add(message);        return this;    }}我在 Startup 類中的配置如下所示：public void ConfigureServices(IServiceCollection services){    AddMediatr(services);    services.AddMvc().AddFluentValidation(fv =>         {            fv.RegisterValidatorsFromAssemblyContaining<Startup>();            fv.RunDefaultMvcValidationAfterFluentValidationExecutes = false;        }).SetCompatibilityVersion(CompatibilityVersion.Version_2_2);           }