[英]Unity and dependency with constructor params
当我尝试使用带有接口的类时遇到Unity问题,该类的实现带有4个参数。
这里是错误堆栈跟踪:
Resolution of the dependency failed, type = "Keolis.ODM.Controllers.TypeTacheApiController", name = "(none)".
↵Exception occurred while: while resolving.
↵Exception is: InvalidOperationException - The type String cannot be constructed. You must configure the container to supply this value.
↵-----------------------------------------------
↵At the time of the exception, the container was:
↵
↵ Resolving Keolis.ODM.Controllers.TypeTacheApiController,(none)
↵ Resolving parameter "typeTacheService" of constructor Keolis.ODM.Controllers.TypeTacheApiController(Keolis.ODM.Business.ITypeTacheService typeTacheService)
↵ Resolving Keolis.ODM.Business.TypeTacheService,(none) (mapped from Keolis.ODM.Business.ITypeTacheService, (none))
↵ Resolving parameter "mediation" of constructor Keolis.ODM.Business.TypeTacheService(Keolis.Mediation.IMediation mediation, Keolis.ODM.Models.Repositories.ITypeTacheRepository typeTacheRepository, Keolis.Okapi.Models.Repositories.ITypeTacheRepository typeTacheOkapiRepository)
↵ Resolving Keolis.Mediation.WebService.Mediation,(none) (mapped from Keolis.Mediation.IMediation, (none))
↵ Resolving parameter "profilOkapiRepository" of constructor Keolis.Mediation.WebService.Mediation(Keolis.Okapi.Models.Repositories.IProfilOkapiRepository profilOkapiRepository, Keolis.Okapi.Models.Repositories.ISocieteOkapiRepository societeOkapiRepository, Keolis.Okapi.Models.Repositories.ICentreOkapiRepository centreOkapiRepository, Keolis.Okapi.Models.Repositories.IUtilisateurOkapiRepository utilisateurOkapiRepository)
↵ Resolving Keolis.Okapi.Models.Repositories.ProfilOkapiRepository,(none) (mapped from Keolis.Okapi.Models.Repositories.IProfilOkapiRepository, (none))
↵ Resolving parameter "serveur" of constructor Keolis.Okapi.Models.Repositories.ProfilOkapiRepository(System.String serveur, System.String catalog, System.String user, System.String pass)
↵ Resolving System.String,(none)
↵"
还有UnityConfig
public static void RegisterTypes(IUnityContainer container)
{
// NOTE: To load from web.config uncomment the line below. Make sure to add a Microsoft.Practices.Unity.Configuration to the using statements.
container.LoadConfiguration();
var repository = container.Resolve<ILocalDatabaseService>();
var referentielLocalDatabase = repository.GetRsh();
container.RegisterType<Okapi.Models.Repositories.ITypeHeureRepository, Okapi.Models.Repositories.TypeHeureRepository>();
container.Resolve<Okapi.Models.Repositories.ITypeHeureRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.ITypeTacheRepository, Okapi.Models.Repositories.TypeTacheRepository>();
container.Resolve<Okapi.Models.Repositories.ITypeTacheRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.IUtilisateurOkapiRepository, Okapi.Models.Repositories.UtilisateurOkapiRepository>();
var utilisateur = container.Resolve<Okapi.Models.Repositories.IUtilisateurOkapiRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.ISocieteOkapiRepository, Okapi.Models.Repositories.SocieteOkapiRepository>();
var societe = container.Resolve<Okapi.Models.Repositories.ISocieteOkapiRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.IProfilOkapiRepository, Okapi.Models.Repositories.ProfilOkapiRepository>();
var profil = container.Resolve<Okapi.Models.Repositories.IProfilOkapiRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.ICentreOkapiRepository, Okapi.Models.Repositories.CentreOkapiRepository>();
var centre = container.Resolve<Okapi.Models.Repositories.ICentreOkapiRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Okapi.Models.Repositories.IBuildVersionOkapiRepository, Okapi.Models.Repositories.BuildVersionOkapiRepository>();
container.Resolve<Okapi.Models.Repositories.IBuildVersionOkapiRepository>(new ResolverOverride[] {
new ParameterOverride("serveur", referentielLocalDatabase.Serveur),
new ParameterOverride("catalog", referentielLocalDatabase.Base),
new ParameterOverride("user", referentielLocalDatabase.User),
new ParameterOverride("pass", referentielLocalDatabase.Password)
});
container.RegisterType<Keolis.Mediation.IMediation, Keolis.Mediation.WebService.Mediation>(new InjectionConstructor(
new Okapi.Models.Repositories.ProfilOkapiRepository(referentielLocalDatabase.Serveur, referentielLocalDatabase.Base, referentielLocalDatabase.User, referentielLocalDatabase.Password),
new Okapi.Models.Repositories.SocieteOkapiRepository(referentielLocalDatabase.Serveur, referentielLocalDatabase.Base, referentielLocalDatabase.User, referentielLocalDatabase.Password),
new Okapi.Models.Repositories.CentreOkapiRepository(referentielLocalDatabase.Serveur, referentielLocalDatabase.Base, referentielLocalDatabase.User, referentielLocalDatabase.Password),
new Okapi.Models.Repositories.UtilisateurOkapiRepository(referentielLocalDatabase.Serveur, referentielLocalDatabase.Base, referentielLocalDatabase.User, referentielLocalDatabase.Password)
));
//container.RegisterType<Keolis.Mediation.IMediation, Keolis.Mediation.WebService.Mediation>(new InjectionConstructor(
// profil, societe, centre, utilisateur));
//container.Resolve<Keolis.Mediation.IMediation>(new ResolverOverride[] {
// new ParameterOverride("profilOkapiRepository", profil),
// new ParameterOverride("societeOkapiRepository", societe),
// new ParameterOverride("centreOkapiRepository", centre),
// new ParameterOverride("utilisateurOkapiRepository", utilisateur)
//});
}
并执行IMediation
public Mediation(IProfilOkapiRepository profilOkapiRepository,
ISocieteOkapiRepository societeOkapiRepository,
ICentreOkapiRepository centreOkapiRepository,
IUtilisateurOkapiRepository utilisateurOkapiRepository)
{
_profilOkapiRepository = profilOkapiRepository;
_societeOkapiRepository = societeOkapiRepository;
_centreOkapiRepository = centreOkapiRepository;
_utilisateurOkapiRepository = utilisateurOkapiRepository;
_deser = new Deserializer();
}
我尝试了几种配置,背后的代码和web.config,但在上次解决(调解)时遇到了相同的错误。
那么,如何注册一个带有参数接口的类呢?
谢谢你的帮助。
编辑:工作代码
public static void RegisterTypes(IUnityContainer container)
{
// NOTE: To load from web.config uncomment the line below. Make sure to add a Microsoft.Practices.Unity.Configuration to the using statements.
container.LoadConfiguration();
var repository = container.Resolve<ILocalDatabaseService>();
var referentielLocalDatabase = repository.GetRsh();
// This says "if you ever need need a string called 'xxxx', get that one."
container.RegisterInstance<string>("serveur", referentielLocalDatabase.Serveur);
container.RegisterInstance<string>("catalog", referentielLocalDatabase.Base);
container.RegisterInstance<string>("user", referentielLocalDatabase.User);
container.RegisterInstance<string>("pass", referentielLocalDatabase.Password);
// Here it says "Find a constructor that needs 4 strings, and use
// these registered string.
container.RegisterType<Okapi.Models.Repositories.ITypeHeureRepository, Okapi.Models.Repositories.TypeHeureRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.ITypeTacheRepository, Okapi.Models.Repositories.TypeTacheRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.IUtilisateurOkapiRepository, Okapi.Models.Repositories.UtilisateurOkapiRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.ISocieteOkapiRepository, Okapi.Models.Repositories.SocieteOkapiRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.IProfilOkapiRepository, Okapi.Models.Repositories.ProfilOkapiRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.ICentreOkapiRepository, Okapi.Models.Repositories.CentreOkapiRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
container.RegisterType<Okapi.Models.Repositories.IBuildVersionOkapiRepository, Okapi.Models.Repositories.BuildVersionOkapiRepository>(
new InjectionConstructor(
new ResolvedParameter<string>("serveur"),
new ResolvedParameter<string>("catalog"),
new ResolvedParameter<string>("user"),
new ResolvedParameter<string>("pass"))
);
// Here it says "For IMediation, use the Mediation class".
// The constructor you've shown us will required the other interfaces and
// the container will be like "I know how to create a class of all of
// these interfaces. I'll do that!"
container.RegisterType<Mediation.IMediation, Mediation.WebService.Mediation>();
}
您对Unity的使用有点委婉。 当您进行注册时,几乎应该只进行注册,而不是进行注册/解决/“使用产品进行注册”等。您希望将分辨率和类实例化推迟到最新的负责任时刻。
另外,当注册的参数不起作用时,应使用ParameterOverride来覆盖为特定情况设置的参数。 您可以注册它们。 这是我的处理方式:
(出于可读性考虑,我在所有地方都删除了“ Okapi.Models”和“ Keolis.Mediation”。)
public static void RegisterTypes(IUnityContainer container)
{
var repository = container.Resolve<ILocalDatabaseService>();
var referentielLocalDatabase = repository.GetRsh();
// This says "if you ever need need a string called 'xxxx', get that one."
container.RegisterInstance<string>("serveur", referentielLocalDatabase.Serveur);
container.RegisterInstance<string>("catalog", referentielLocalDatabase.Base);
container.RegisterInstance<string>("user", referentielLocalDatabase.User);
container.RegisterInstance<string>("pass", referentielLocalDatabase.Password);
// Here it says "Find a constructor that needs 4 strings, and use
// these registered string.
container.RegisterType<Repositories.ITypeHeureRepository, Repositories.TypeHeureRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.ITypeTacheRepository, Repositories.TypeTacheRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.IUtilisateurOkapiRepository, Repositories.UtilisateurOkapiRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.ISocieteOkapiRepository, Repositories.SocieteOkapiRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.IProfilOkapiRepository, Repositories.ProfilOkapiRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.ICentreOkapiRepository, Repositories.CentreOkapiRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
container.RegisterType<Repositories.IBuildVersionOkapiRepository, Repositories.BuildVersionOkapiRepository>(
new ParameterResolve<string>("serveur"),
new ParameterResolve<string>("catalog"),
new ParameterResolve<string>("user"),
new ParameterResolve<string>("pass"));
// Here it says "For IMediation, use the Mediation class".
// The constructor you've shown us will required the other interfaces and
// the container will be like "I know how to create a class of all of
// these interfaces. I'll do that!"
container.RegisterType<IMediation, WebService.Mediation>();
}
尚未测试代码,因为它具有太多的依赖关系,但是它应该可以工作。
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