在浏览器上输入网址时，设备未准备就绪错误

Question

我正在使用Stripe支付网关进行电子商务交易。为了沟通，我必须使用webhook url意味着我将提供一个url，以便他们可以与我们联系。 我创建了一个控制器和动作，它是[AllowAnonymus]。当我在本地运行应用程序并在浏览器上键入控制器和操作时，它会触发该操作。但是，当我部署在我的测试服务器上并执行相同操作时，会出现以下错误：

'/'应用程序中的服务器错误。 设备未准备好。

堆栈跟踪：

[IOException: The device is not ready. 
] 
    System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +14840940 
    System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) +1430 
    System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) +211 
    System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize, Boolean checkHost) +210 
    System.IO.File.InternalWriteAllText(String path, String contents, Encoding encoding, Boolean checkHost) +87 
    SchoolManagement.DTO.Entities.OrderItem.SavePartialCharge(String invoiceData) in c:\Atlassian\Bamboo-home\xml-data\build-dir\SMS-PPINBOX-JOB1\SchoolDTO\Entities\OrderItem.cs:185 
    SchoolWeb.Controllers.StripeWebhookController.GetStripeResponse() in c:\Atlassian\Bamboo-home\xml-data\build-dir\SMS-PPINBOX-JOB1\SchoolWeb\Controllers\StripeWebhookController.cs:24 
    lambda_method(Closure , ControllerBase , Object[]) +79 
    System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +270 
    System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39 
    System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +120 
    System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +452 
    System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +15 
    System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +33 
    System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +240 
    System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +28 
    System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 
    System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53 
    System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 
    System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +42 
    System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 
    System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606 
    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288 

任何一个可以帮我解决这个问题。

写操作下面的代码：

public class StripeWebhookController : BaseController 
    { 
     // 
     // GET: /StripeWebhook/ 

      [AllowAnonymous] 
     public JsonResult GetStripeResponse() 
     { 
      Stream req = Request.InputStream; 
      req.Seek(0, System.IO.SeekOrigin.Begin); 
      string json = new StreamReader(req).ReadToEnd(); 
      DTO.OrderItem.SavePartialCharge(json); 
      return Json("", JsonRequestBehavior.AllowGet); 
     } 

    } 

添加方法SavePartialCharge

public static String SavePartialCharge(string invoiceData) 
     { 
      try 
      { 

       string stripeEventType = BL.PaymentGateway.StripeReturn.GetStripeType(invoiceData); 
       var obj = JObject.Parse(invoiceData); 
       var dataObj = obj.SelectToken("data.object"); 
       var subscriptionID = dataObj.SelectToken("subscription").ToString(); 
       var customerID = dataObj.SelectToken("customer").ToString(); 
       var chargeID = dataObj.SelectToken("charge").ToString(); 
       var amount = Convert.ToDecimal(!dataObj.SelectToken("subtotal").ToString().IsNullOrEmpty() ?dataObj.SelectToken("subtotal").ToString() : "0"); 

       using (var db = new SchoolEntities()) 
       { 
        switch (stripeEventType) 
        { 

         case "invoice.payment_failed": 
          var resultorderFailed = 
           db.OrderItems.Where(oi => oi.MerchantServiceSubscriptionID == subscriptionID) 
            .Select(oi => new {oi.ID, oi.Order.CreditCard4Digits}) 
            .FirstOrDefault(); 
          if (resultorderFailed != null) 
           OrderItemInstallment.AddOrderItemInstallment(db, resultorderFailed.ID, amount, 
            resultorderFailed.CreditCard4Digits, chargeID, false); 
          return ""; 
         case "invoice.payment_succeeded": 
          var resultOrderSucceed = 
           db.OrderItems.Where(oi => oi.MerchantServiceSubscriptionID == subscriptionID) 
            .Select(oi => new {oi.ID, oi.Order.CreditCard4Digits, oi.TotalInstallments}) 
            .FirstOrDefault(); 
          if (resultOrderSucceed != null) 
          { 
           OrderItemInstallment.AddOrderItemInstallment(db, resultOrderSucceed.ID, amount, 
            resultOrderSucceed.CreditCard4Digits, chargeID, true); 
           var count = 
            db.OrderItemInstallments.Count(
             oii => oii.OrderItemID == resultOrderSucceed.ID && oii.Success); 
           if (count == resultOrderSucceed.TotalInstallments) 
            BL.PaymentGateway.StripePaymentGateway.CancelSubscription(customerID, 
             subscriptionID); 
          } 
          return ""; 
        } 
       } 

      } 
      catch (Exception ex) 
      { 
       System.IO.File.WriteAllText(@"D:\exception.txt", ex.Message); 
      } 
      return ""; 
     } 

Answer 1

你的堆栈跟踪指向与StreamWriter的错误。根据你的代码，有如果的StreamWriter只有一个occurence：

catch (Exception ex) 
{ 
    System.IO.File.WriteAllText(@"D:\exception.txt", ex.Message); 
} 

这意味着，发生异常时，你的catch块要此异常登录到本地驱动器。这会导致另一个异常，因为可能没有驱动器D. 从逻辑上讲，在解决此异常之后，将会有另一个异常，您的catch块将正确记录。

如果驱动器D存在（并且它不是cd驱动器）并且您的IIS用户帐户具有适当的权限，请检查您的测试机器。

在旁注：我不会以这种方式捕捉异常。这只是污染了带有错误消息的文本文件，没有堆栈跟踪，时间戳等。 您可以从已有的许多Logging Frameworks中抽取一个（例如NLOG），并让您的生活方式更轻松。

Answer 2

根据http://referencesource.microsoft.com/#mscorlib/system/io/file.cs,56cd161c65ab07fe,references，“设备未准备就绪”错误似乎从Win32出来。如果在确保授予权限之后仍然存在，并且存在这样的驱动器，则可能是一些硬件问题。在这种情况下，你可以检查https://superuser.com/questions/364851/how-to-troubleshoot-the-device-is-not-ready-error-in-windows-xp希望它有帮助！

PS。是的，它不是很好的方式来保持日志（nlog，log4net，或手动到App_data文件夹“）。