Question

我在Azure服务器上发布时出现此错误：
序列不包含任何元素

我不确定这个错误是因为Ninject。我已尝试过类似错误的所有提示，但似乎这是一般错误我试图在几台机器上运行相同的代码，只有在公共Azure时才会发生此错误如果你经历了一些事情并且可以提供帮助，那么非常感谢你。

堆栈跟踪：

[InvalidOperationException: Sequence contains no elements] 
   System.Linq.Enumerable.Single(IEnumerable`1 source) +311
   Ninject.Web.Mvc.NinjectMvcHttpApplicationPlugin.Start() +44
   Ninject.Web.Common.Bootstrapper.<Initialize>b__0(INinjectHttpApplicationPlugin c) +8
   Ninject.Infrastructure.Language.ExtensionsForIEnumerableOfT.Map(IEnumerable`1 series, Action`1 action) +130
   Ninject.Web.Common.Bootstrapper.Initialize(Func`1 createKernelCallback) +140
   Splora.SploraV1.UI.Web.NinjectWebCommon.Start() +102

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +192
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +136
   WebActivatorEx.BaseActivationMethodAttribute.InvokeMethod() +73
   WebActivatorEx.ActivationManager.RunActivationMethods(Boolean designerMode) +350
   WebActivatorEx.ActivationManager.Run() +78

[InvalidOperationException: The pre-application start initialization method Run on type WebActivatorEx.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation..]
   System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures) +613
   System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) +141
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +159
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +157
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +656

[HttpException (0x80004005): The pre-application start initialization method Run on type WebActivatorEx.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation..]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +4531288
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +94
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +191

NinjectWebCommon.cs：

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 = RegisterServices();
        try
        {
            kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
            kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();

            return kernel;
        }
        catch
        {
            kernel.Dispose();
            throw;
        }
    }


    private static StandardKernel RegisterServices()
    {
        return new Container().GetModules();
    }

Answer 1

我在发布Azure时发现了问题我没有在发布屏幕的“设置”选项卡上选择“删除目的地的其他文件”选项。

因此，发布没有删除我不再使用的旧DLL。我清除了Azure上的所有文件并再次发布，并且有效。

之后，我在发布时选择了“在目的地删除其他文件”这一选项并且没有再次发生。

Answer 2

在我的情况下，这个问题发生在UAT但不在我的机器上。

原因是我更改了命名空间，因此在release文件夹中有两个具有相同类的库。

我不得不清理发布文件夹并再次发布。现在好了

Erin on Ninject：序列不包含任何元素

2 个答案: