Question

我一直在搜索，在线和调试，重新阅读dryioc的文档并查看样本。我不认为我的问题在于干旱，或者我可能忽略了一个愚蠢的错误。

项目设置=＆gt; service =＆gt; owin + webapi2 使用attributerouting，swagger和apiversioning

这就是我设置容器的方式

private IContainer SetupDependencyInjection(HttpConfiguration config)
{
        var container = new Container();
        container.WithWebApi(config, throwIfUnresolved: type => typeIsController());
        container.RegisterWebApiControllers(config);
        container.Register<IObjectFactory, ObjectFactory>(Reuse.Singleton);

        RegisterStoreServices(container);
        RegisterMetadata(container);

        var validate = container.Validate();
        var verify = container.VerifyResolutions();
        if (validate.Any() || verify.Any())
        {
            throw new Exception("Error occured while setting up service dependencies.");
        }

        using (var c = container.OpenScope(Reuse.WebRequestScopeName))
        {
            var songController = c.Resolve<Musify.WebApi.Controllers.v1._0.SongsController>();
            var GenresController = c.Resolve<Musify.WebApi.Controllers.v1._0.GenresController>();
        }
        return container;
}

RegisterStoreServices和RegisterMetadata都只包含单例或临时注册。

当我尝试在API控制器上调用控制器方法时，出现以下错误

    {
  "message": "An error has occurred.",
  "exceptionMessage": "An error occurred when trying to create a controller of type 'SongsController'. Make sure that the controller has a parameterless public constructor.",
  "exceptionType": "System.InvalidOperationException",
  "stackTrace": "   at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)\r\n   at System.Web.Http.Controllers.HttpControllerDescriptor.CreateController(HttpRequestMessage request)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()",
  "innerException": {
    "message": "An error has occurred.",
    "exceptionMessage": "Unable to resolve Musify.Api.Service.Data.ISongRepository as parameter \"songRepository\"\r\n  in scoped Musify.WebApi.Controllers.v1._0.SongsController.\r\nWhere no service registrations found\r\n  and number of Rules.FallbackContainers: 0\r\n  and number of Rules.UnknownServiceResolvers: 0",
    "exceptionType": "DryIoc.ContainerException",
    "stackTrace": "   at DryIoc.Throw.It(Int32 error, Object arg0, Object arg1, Object arg2, Object arg3)\r\n   at DryIoc.Container.ThrowUnableToResolve(Request request)\r\n   at DryIoc.Container.DryIoc.IContainer.ResolveFactory(Request request)\r\n   at DryIoc.ReflectionFactory.CreateExpressionOrDefault(Request request)\r\n   at DryIoc.Factory.GetExpressionOrDefault(Request request)\r\n   at DryIoc.Factory.GetDelegateOrDefault(Request request)\r\n   at DryIoc.Container.ResolveAndCacheDefaultDelegate(Type serviceType, Boolean ifUnresolvedReturnDefault, IScope scope)\r\n   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, Boolean ifUnresolvedReturnDefault)\r\n   at DryIoc.WebApi.DryIocDependencyScope.GetService(Type serviceType)\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator)\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)"
  }
    }

我知道在很多情况下，这是因为服务没有注册，但我做了。

container.Register<ISongRepository, SongRepository>(Reuse.Singleton);

正如您在第一段代码中看到的那样，我进行了验证，验证，我甚至尝试过container.openscope，以查看容器是否已注册。在容器上，我可以看到歌曲库也被填写。

所以我猜不知道，webapi并没有使用注入容器的控制器。

我在依赖设置中做错了什么？

public void Configuration(IAppBuilder appBuilder)
    {
        SetupLogging();

        var config = new HttpConfiguration();
        SetupRouting(config);
        SetupVersioning(config);
        SetupJson(config);
        SetupDocumentation(config);
        SetupDependencyInjection(config);
        appBuilder.UseWebApi(config);
        appBuilder.UseErrorPage(ErrorPageOptions.ShowAll);
    }

我不确定这是否重要，但在配置完所有其他内容后，我将设置容器。

Answer 1

经过一番乱搞后，我在添加标有// this

的行后才开始工作

var container = SetupDependencyInjection(config);
        appBuilder.UseDryIocOwinMiddleware(container); //this
        appBuilder.UseWebApi(config);
        appBuilder.UseDryIocWebApi(config); //this

如果有人能给我一个，我想要一个表达。因为在另一篇文章中，我读到一个人因使用UseWebApi和UseDryIocWebApi而遇到问题。

但是如果没有OwinMiddleware，它仍然无法正常工作。那么这两个功能都能实现什么呢？

或者我使用了“错误修复”？

dryioc controller.service在安装过程中解决，而不是在api调用期间

1 个答案: