asp.net-web-api – 具有Web Api RC的Ninject InSingletonScope
我使用Ninject的InSingletonScope绑定与Web Api RC有一些困难。无论我如何创建我的绑定,它似乎也许Web Api正在处理范围/生命周期而不是Ninject。
我已经尝试了几个变体,用于连接Ninject。最常见的是与这里的答案相同: 我也试过这个版本: 在这两个方面,我真的是创建了一个开箱即用的Web Api项目,然后按照任一文章中的描述添加了Ninject软件包。最后,我添加了Resolver和Scope类,如StackOverflow版本: public class NinjectDependencyScope : IDependencyScope { private IResolutionRoot resolver; internal NinjectDependencyScope(IResolutionRoot resolver) { Contract.Assert(resolver != null); this.resolver = resolver; } public void Dispose() { IDisposable disposable = resolver as IDisposable; if (disposable != null) disposable.Dispose(); resolver = null; } public object GetService(Type serviceType) { if (resolver == null) throw new ObjectDisposedException("this","This scope has already been disposed"); return resolver.TryGet(serviceType); } public IEnumerable<object> GetServices(Type serviceType) { if (resolver == null) throw new ObjectDisposedException("this","This scope has already been disposed"); return resolver.GetAll(serviceType); } } 和: public class NinjectDependencyResolver : NinjectDependencyScope,IDependencyResolver { private IKernel kernel; public NinjectDependencyResolver(IKernel kernel) : base(kernel) { this.kernel = kernel; } public IDependencyScope BeginScope() { return new NinjectDependencyScope(kernel.BeginBlock()); } } 然后,NinjectWebCommon看起来像这样: using System.Web.Http; using MvcApplication2.Controllers; [assembly: WebActivator.PreApplicationStartMethod(typeof(MvcApplication2.App_Start.NinjectWebCommon),"Start")] [assembly: WebActivator.ApplicationShutdownMethodAttribute(typeof(MvcApplication2.App_Start.NinjectWebCommon),"Stop")] namespace MvcApplication2.App_Start { using System; using System.Web; using Microsoft.Web.Infrastructure.DynamicModuleHelper; using Ninject; using Ninject.Web.Common; public static class NinjectWebCommon { private static readonly Bootstrapper bootstrapper = new Bootstrapper(); /// <summary> /// Starts the application /// </summary> public static void Start() { DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule)); DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule)); bootstrapper.Initialize(CreateKernel); } /// <summary> /// Stops the application. /// </summary> public static void Stop() { bootstrapper.ShutDown(); } /// <summary> /// Creates the kernel that will manage your application. /// </summary> /// <returns>The created kernel.</returns> private static IKernel CreateKernel() { var kernel = new StandardKernel(); kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel); kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>(); // Register Dependencies RegisterServices(kernel); // Set Web API Resolver GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel); return kernel; } /// <summary> /// Load your modules or register your services here! /// </summary> /// <param name="kernel">The kernel.</param> private static void RegisterServices(IKernel kernel) { kernel.Bind<ILogger>().To<Logger>().InSingletonScope(); } } } ILogger和Logger对象不做任何事情,但说明问题。 Logger做Debug.Writeline,以便我可以看到它被实例化。每页刷新页面都会显示每次呼叫正在刷新,而不是我希望的单身人士。这是一个使用Logger的控制器: public class ValuesController : ApiController { private readonly ILogger _logger; public ValuesController(ILogger logger) { _logger = logger; _logger.Log("Logger created at " + System.DateTime.Now.ToLongTimeString()); } // GET api/values public IEnumerable<string> Get() { return new string[] { "value1","value2" }; } // GET api/values/5 public string Get(int id) { return "value"; } // POST api/values public void Post(string value) { } // PUT api/values/5 public void Put(int id,string value) { } // DELETE api/values/5 public void Delete(int id) { } } 当我将跟踪信息放入内核的创建中时,似乎表明内核只创建一次。那么…我看不到什么为什么单身人士不存在? 解决方法
使用
public IDependencyScope BeginScope() { return new NinjectDependencyScope(kernel); } 并且不要在NinjectDependencyScope中配置内核 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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