Dependency injection 某些服务无法使用库NetCore.AutoRegisterDi构建
我正在开发基于asp.net core 3.1 GraphQL的API。我使用下面的参考文章在API层中设置自动DI配置,并使用了nuget包:NetCore.AutoRegisterDi 下面是代码详细信息: 代码:Dependency injection 某些服务无法使用库NetCore.AutoRegisterDi构建,dependency-injection,c#-8.0,asp.net-core-3.1,graphql-dotnet,netcore.autoregisterdi,Dependency Injection,C# 8.0,Asp.net Core 3.1,Graphql Dotnet,Netcore.autoregisterdi,我正在开发基于asp.net core 3.1 GraphQL的API。我使用下面的参考文章在API层中设置自动DI配置,并使用了nuget包:NetCore.AutoRegisterDi 下面是代码详细信息: 代码: public virtual void ConfigureServices(IServiceCollection services) => services .AddGraphQLResolvers()
public virtual void ConfigureServices(IServiceCollection services) => services
.AddGraphQLResolvers()
.AddProjectRepositories();
System.AggregateException
HResult=0x80131500
Message=Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.ICountriesResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.CountriesResolver':
Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.) (Error while validating the service descriptor 'ServiceType:
Author.Query.New.API.GraphQL.Resolvers.ICountryGroupsResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.CountryGroupsResolver': Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryGroupService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.CountryGroupsResolver'.) (Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.IDisclaimerResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.DisclaimerResolver': Unable to resolve service for type 'Author.Query.Persistence.Interfaces.IDisclaimerService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.DisclaimerResolver'.)
Source=Microsoft.Extensions.DependencyInjection
StackTrace:
at Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor(IEnumerable`1 serviceDescriptors, ServiceProviderOptions options)
at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection services, ServiceProviderOptions options)
at Microsoft.Extensions.DependencyInjection.DefaultServiceProviderFactory.CreateServiceProvider(IServiceCollection containerBuilder)
at Microsoft.Extensions.Hosting.Internal.ServiceFactoryAdapter`1.CreateServiceProvider(Object containerBuilder)
at Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider()
at Microsoft.Extensions.Hosting.HostBuilder.Build()
at Author.Query.New.API.Program.Main(String[] args) in /src/QueryStack/Author.Query.New.API/Program.cs:line 15
Inner Exception 1:
InvalidOperationException: Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.ICountriesResolver Lifetime: Scoped ImplementationType:
Author.Query.New.API.GraphQL.Resolvers.CountriesResolver':
Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate
'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.
Inner Exception 2:
InvalidOperationException: Unable to resolve service for type
'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate
'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.
Startup.cs:
public virtual void ConfigureServices(IServiceCollection services) => services
.AddGraphQLResolvers()
.AddProjectRepositories();
System.AggregateException
HResult=0x80131500
Message=Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.ICountriesResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.CountriesResolver':
Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.) (Error while validating the service descriptor 'ServiceType:
Author.Query.New.API.GraphQL.Resolvers.ICountryGroupsResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.CountryGroupsResolver': Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryGroupService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.CountryGroupsResolver'.) (Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.IDisclaimerResolver Lifetime: Scoped ImplementationType: Author.Query.New.API.GraphQL.Resolvers.DisclaimerResolver': Unable to resolve service for type 'Author.Query.Persistence.Interfaces.IDisclaimerService' while attempting to activate 'Author.Query.New.API.GraphQL.Resolvers.DisclaimerResolver'.)
Source=Microsoft.Extensions.DependencyInjection
StackTrace:
at Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor(IEnumerable`1 serviceDescriptors, ServiceProviderOptions options)
at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection services, ServiceProviderOptions options)
at Microsoft.Extensions.DependencyInjection.DefaultServiceProviderFactory.CreateServiceProvider(IServiceCollection containerBuilder)
at Microsoft.Extensions.Hosting.Internal.ServiceFactoryAdapter`1.CreateServiceProvider(Object containerBuilder)
at Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider()
at Microsoft.Extensions.Hosting.HostBuilder.Build()
at Author.Query.New.API.Program.Main(String[] args) in /src/QueryStack/Author.Query.New.API/Program.cs:line 15
Inner Exception 1:
InvalidOperationException: Error while validating the service descriptor 'ServiceType: Author.Query.New.API.GraphQL.Resolvers.ICountriesResolver Lifetime: Scoped ImplementationType:
Author.Query.New.API.GraphQL.Resolvers.CountriesResolver':
Unable to resolve service for type 'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate
'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.
Inner Exception 2:
InvalidOperationException: Unable to resolve service for type
'Author.Query.Persistence.Interfaces.ICountryService' while attempting to activate
'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'.
projectservicecolectionextensions.cs
public static class ProjectServiceCollectionExtensions
{
public static IServiceCollection AddProjectRepositories(this IServiceCollection services) =>
services.RegisterAssemblyPublicNonGenericClasses(Assembly.GetAssembly(typeof(CommonService)))
.Where(c => c.Name.EndsWith("Persistence"))
.AsPublicImplementedInterfaces(ServiceLifetime.Scoped);
public static IServiceCollection AddGraphQLResolvers(this IServiceCollection services) =>
services
.AddScoped<ICountriesResolver, CountriesResolver>()
.AddScoped<ICountryGroupsResolver, CountryGroupsResolver>()
.AddScoped<IDisclaimerResolver, DisclaimerResolver>();
}
public class CountriesResolver : Resolver, ICountriesResolver
{
private readonly ICountryService _countryService;
private readonly IHttpContextAccessor _accessor;
private readonly IDataLoaderContextAccessor _dataLoaderContextAccessor;
public CountriesResolver(ICountryService countryService, IHttpContextAccessor accessor, IDataLoaderContextAccessor dataLoaderContextAccessor)
{
_countryService = countryService ?? throw new ArgumentNullException(nameof(countryService));
_accessor = accessor;
_dataLoaderContextAccessor = dataLoaderContextAccessor;
}
public void Resolve(GraphQLQuery graphQLQuery)
{
var language = _accessor.HttpContext.Items["language"] as LanguageDTO;
graphQLQuery.FieldAsync<ResponseGraphType<CountryResultType>>("countriesresponse", arguments: new QueryArguments(new QueryArgument<IdGraphType>{Name = "pageNo", Description = "page number"}, new QueryArgument<IdGraphType>{Name = "pageSize", Description = "page size"}), resolve: async context =>
{
var pageNo = context.GetArgument<int>("pageNo") == 0 ? 1 : context.GetArgument<int>("pageNo");
var pageSize = context.GetArgument<int>("pageSize") == 0 ? 100 : context.GetArgument<int>("pageSize");
if (language != null)
{
var loader = _dataLoaderContextAccessor.Context.GetOrAddLoader("GetAllCountries", () => _countryService.GetAllCountriesAsync(language, pageNo, pageSize));
var list = await context.TryAsyncResolve(async c => await loader.LoadAsync());
return Response(list);
}
return null;
}
, description: "All Countries data");
}
}
using Author.Query.Persistence.DTO;
using System.Threading.Tasks;
namespace Author.Query.Persistence.Interfaces
{
public interface ICommonService
{
LanguageDTO GetLanguageFromLocale(string locale);
Task<LanguageDTO> GetLanguageFromLocaleAsync(string locale);
}
}
namespace Author.Query.Persistence
{
public class CommonService : ICommonService
{
private readonly AppDbContext _dbContext;
private readonly IOptions<AppSettings> _appSettings;
private readonly IMapper _mapper;
private readonly ICacheService<Languages, LanguageDTO> _cacheService;
public CommonService(AppDbContext dbContext, IOptions<AppSettings> appSettings, IMapper mapper, ICacheService<Languages, LanguageDTO> cacheService)
{
_dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
_appSettings = appSettings;
_mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
_cacheService = cacheService ?? throw new ArgumentNullException(nameof(cacheService));
}
//public Languages GetLanguageFromLocale(string locale)
public LanguageDTO GetLanguageFromLocale(string locale)
{
return GetLanguagesByFilter(GetFilterValues(locale, true).ToArray());
}
}
}
namespace Author.Query.Persistence.Interfaces
{
public interface ICountryService
{
Task<CountryResult> GetAllCountriesAsync(LanguageDTO language, int pageNo, int pageSize);
Task<CountryDTO> GetCountryAsync(LanguageDTO language, int countryId);
}
}
namespace Author.Query.Persistence
{
public class CountryService : ICountryService
{
private readonly AppDbContext _dbContext;
private readonly IOptions<AppSettings> _appSettings;
private readonly ICacheService<Images, ImageDTO> _cacheService;
public CountryService(TaxathandDbContext dbContext, IOptions<AppSettings> appSettings, ICacheService<Images, ImageDTO> cacheService)
{
_dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
_cacheService = cacheService ?? throw new ArgumentNullException(nameof(cacheService));
_appSettings = appSettings;
}
public async Task<CountryResult> GetAllCountriesAsync(LanguageDTO language, int pageNo, int pageSize)
{
var localeLangId = language.LanguageId;
var dftLanguageId = int.Parse(_appSettings.Value.DefaultLanguageId);
// By default pick the localLanguage value
var countries = await GetAllCountriesDataAsync(localeLangId, pageNo, pageSize);
// If localLanguage data is not available then pull the data based on default language
if (countries.Countries.Count == 0)
{
countries = await GetAllCountriesDataAsync(dftLanguageId, pageNo, pageSize);
}
return countries;
}
public async Task<CountryDTO> GetCountryAsync(LanguageDTO language, int countryId)
{
var localeLangId = language.LanguageId;
var dftLanguageId = int.Parse(_appSettings.Value.DefaultLanguageId);
//var country = new CountryDTO();
// By default pick the localLanguage value
var country = await GetCountryDetailsAsync(countryId, localeLangId);
// If localLanguage data is not available then pull the data based on default language
if (country == null)
{
country = await GetCountryDetailsAsync(countryId, dftLanguageId);
}
return country;
}
private async Task<CountryDTO> GetCountryDetailsAsync(int countryId, int languageId)
{
var images = await _cacheService.GetAllAsync("imagesCacheKey");
var country = await _dbContext.Countries.AsNoTracking().FirstOrDefaultAsync(c => c.CountryId.Equals(countryId) && c.IsPublished.Equals(true) && c.LanguageId.Equals(languageId));
if (country == null)
{
return null;
}
var countryDTO = new CountryDTO{Uuid = country.CountryId, PNGImagePath = images.FirstOrDefault(im => im.ImageId.Equals(country.PNGImageId)).FilePath, SVGImagePath = images.FirstOrDefault(im => im.ImageId.Equals(country.SVGImageId)).FilePath, DisplayName = country.DisplayName, DisplayNameShort = country.DisplayName, Name = Helper.ReplaceChars(country.DisplayName), Path = Helper.ReplaceChars(country.DisplayName), CompleteResponse = true};
return countryDTO;
}
private async Task<CountryResult> GetAllCountriesDataAsync(int languageId, int pageNo, int pageSize)
{
var countryList = new CountryResult();
var images = await _cacheService.GetAllAsync("imagesCacheKey");
var countries = await _dbContext.Countries.Where(cc => cc.IsPublished.Equals(true) && cc.LanguageId.Equals(languageId)).Select(c => new
{
c.CountryId, c.DisplayName, c.PNGImageId, c.SVGImageId
}
).OrderByDescending(c => c.CountryId).Skip((pageNo - 1) * pageSize).Take(pageSize).AsNoTracking().ToListAsync();
if (countries.Count == 0)
{
return null;
}
countryList.Countries.AddRange(countries.Select(co => new CountryDTO{Uuid = co.CountryId, PNGImagePath = images.FirstOrDefault(im => im.ImageId.Equals(co.PNGImageId)).FilePath, SVGImagePath = images.FirstOrDefault(im => im.ImageId.Equals(co.SVGImageId)).FilePath, DisplayName = co.DisplayName, DisplayNameShort = co.DisplayName, Name = Helper.ReplaceChars(co.DisplayName), Path = Helper.ReplaceChars(co.DisplayName), CompleteResponse = true}));
return countryList;
}
}
}
有人能帮我解决这个问题吗?错误是:
无法解析类型的服务
试图激活时出现“Author.Query.Persistence.Interfaces.icontryservice”
'Author.Query.New.API.GraphQL.Resolvers.CountriesResolver'
icontryservice
从未注册AddGraphQlResolver
仅注册IContriesResolver
,IContryGroupsResolver
和IDisclaimerResolver
方法AddProjectRepositories
只注册名称以Persistence
结尾的类,这些类出现在与CommonService
相同的命名空间中。它从不注册CommonService
本身
服务必须注册,例如:
services.AddScoped<ICommonService, CommonService>();
services.addScope();
您的方法AddProjectRepositories()
没有注册CountryService
,因为registerasemblypublicnongericclasses()
中的Where
过滤器查看的是类(类型
),而不是名称空间
因此,也许您可以更改过滤器:
services.RegisterAssemblyPublicNonGenericClasses(Assembly.GetAssembly(typeof(CommonService)))
.Where(c => c.Name.EndsWith("Service")) // <-- Change "Persistence" to "Service"
.AsPublicImplementedInterfaces(ServiceLifetime.Scoped);
services.registerasemblypublicnongenenericclasses(Assembly.GetAssembly(typeof(CommonService)))
.Where(c=>c.Name.EndsWith(“服务”)/对我来说,这是一个简单的错误。我在另一个命名空间中有一个同名的类,引用了错误的类/忘记删除重复的类并将正确的类添加到启动中
我在myapp.Utils中有一个名为UserService的服务,在myapp.Services中有一个名为UserService的服务。当我打算删除myapp.Utils并只使用myapp.Services时,我引用了myapp.Utils。当我的控制器被设置为使用myapp.Services中的一个时,我错误地注入了myapp.Utils中的一个。异常显示未找到IContryservice
服务。Startup.cs没有显示任何注册icontryservice
BTW的内容。您应该只发布相关信息。这个图像根本没有帮助——它只是将代码推到第二个屏幕上GraphQLQuery
和AppSchema
也没有用,错误甚至没有提到它们。充其量,它们应该是最后的代码片段。感谢@PanagiotisKanavos的回复。唯一的目的是用代码和图表清晰地描述整个组件。这里IContryService是包含CommonService的程序集的一部分,这就是我在方法中添加CommonService的原因:AddProjectServiceCollectionExtensions.csIsIContryService
registered anywhere?这就是错误所抱怨的。问题也不包含任何实现该接口的类。是否要注册AddProjectRepositories
?为此,接口必须由一个以Persistence
结尾的类在与CommonService
相同的程序集中实现。感谢@PanagiotisKanavos的回复。我的项目中的服务层有许多接口及其具体的实现类。我已经为所有服务完成了服务注册过程,但是使用nuget包:NetCore.AutoRegisterDi()可以大大简化此设置。我不必为服务类做注册过程。使用作为nuget包一部分的可用方法,它将扫描程序集并完全执行注册设置。@santoshkumarpatro错误表示您必须注册服务。您发布的代码未注册该服务。这是事实,不是讨论的问题。您的代码注册以持久性
结尾的类,而不是公共服务
class@santoshkumarpatro为什么不直接添加services.AddScoped()代码>并检查发生了什么?AddProjectRepositories方法还注册CommonService,因为它也以持久性结束。我所要做的就是注册所有名称空间以持久性结尾的类。这将是一次性设置,我不需要担心注册将来要添加的其他类。