TransactionPrint方法的POSPrinter抛出异常

Question

我们有一个Kiosk应用程序，并使用Microsoft.PointOfService SDK打印。在我们的开发环境中，一切都可以工作。

编辑

下列规格：

• Windows 10企业LTSC 1809
• .NET 4.8
• .NET的Pos 1.14.1
• 打印机:自定义VKP80III

我们试着打印一个简单的文本，没什么特别之处。就像我说的，同样的设置在开发机器上工作。即使在它现在不工作的机器上，它也工作了，但突然停止了工作。我们正在考虑卸载POS和OPOS驱动程序，然后再试一次。

但是，在客户机器(相同的打印机/SDK/应用程序)上，我们得到以下错误：

UPOSDevice | Method TransactionPrint threw an exception.  Service Object specific error. | Microsoft.PointOfService.PosControlException: Method TransactionPrint threw an exception.  Service Object specific error.
   at Microsoft.PointOfService.Legacy.LegacyProxy.ThrowLegacyMethodException(String methodName, Int32 ResultCode, Exception e)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethod(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheckImpl(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheck(String methodName, Object param1, Object param2)
   at Microsoft.PointOfService.Legacy.LegacyPosPrinter.TransactionPrint(PrinterStation station, PrinterTransactionControl control)
   at UPOSPosPrinter.EndTransaction(PrinterStation station)
ErrorCode: 65535
ErrorCodeExtended: -1

EndTransaction-Method看起来如下所示：

public void EndTransaction(PrinterStation station)
{
    try
    {
        _device.TransactionPrint((UPOSPrinterStation)station, PrinterTransactionControl.Normal);
    }
    catch (Exception ex)
    {                
        _logger.LogError(ex, "CapTransactin: {CapTransaction} | ErrorMessage: {ErrorMessage}", _device.CapTransaction, ex.Message);     
        throw;
    }
}

我甚至找不到ErrorCode: 65535的定义。有人知道问题是什么吗?或者至少ErrorCode代表什么？

来自POsforNET的日志：

[6/13/2022 1:47:47 PM       1   ERROR   PosException]   Microsoft.PointOfService.PosControlException: Method TransactionPrint threw an exception.  Service Object specific error.
ErrorCode: Failure
ErrorCodeExtended: 0
Stack trace:    at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   at System.Environment.get_StackTrace()
   at Microsoft.PointOfService.PosException.GetExceptionText(Exception e)
   at Microsoft.PointOfService.PosException.LogError()
   at Microsoft.PointOfService.PosControlException..ctor(String message, ErrorCode errorCode, Int32 errorCodeExtended)
   at Microsoft.PointOfService.Legacy.LegacyProxy.ThrowLegacyMethodException(String methodName, Int32 ResultCode, Exception e)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethod(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheckImpl(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheck(String methodName, Object param1, Object param2)
   at Microsoft.PointOfService.Legacy.LegacyPosPrinter.TransactionPrint(PrinterStation station, PrinterTransactionControl control)
   at Test.Devices.UPOSPosPrinter.EndTransaction(PrinterStation station)
   at Test.Devices.IPosPrinterExtension.PrintReceipt(IPosPrinter printer, CompositeElement template, ILogger logger)
   at Test.Ticket.Controllers.PrinterController.<Print>d__6`1.MoveNext()
   at System.Runtime.CompilerServices.AsyncVoidMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Test.Ticket.Controllers.PrinterController.Print[TBonInfo](TBonInfo bonInfo, PrintLayoutType layoutType, String repeatAction, Nullable`1 layoutId)
   at Test.Ticket.Controllers.PrinterController.PrintReceipt(Nullable`1 layoutId)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
   at Test.Core.AppCommandPipeline.<>c__DisplayClass11_1.<ResolveAppCommand>b__0(RequestContext context)
   at Test.Core.AppCommandPipeline.<<Build>b__16_0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Test.Core.AppCommandPipeline.<Build>b__16_0(RequestContext context)
   at Test.Core.EventEmitterHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Ticket.Middleware.ExceptionsHandler.<Invoke>d__3.MoveNext()
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Test.Ticket.Middleware.ExceptionsHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Ticket.Middleware.AvailabilityUpdateHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Ticket.Middleware.PermissionHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Ticket.Middleware.AuthorizationHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Ticket.Middleware.TimeOutHandler.Invoke(RequestContext context)
   at Test.Core.AppCommandPipelineMiddleware.<>c__DisplayClass3_1`1.<Add>b__1(RequestContext context)
   at Test.Core.AppCommandPipeline.ExecuteRequestContext[T](RequestContext requestContext, T& executionResult)
   at Test.Core.AppCommandPipeline.Execute[T](AppCommand appCommand, T& executionResult, Object parameters)
   at CallSite.Target(Closure , CallSite , AppCommandPipeline , AppCommand , Object& , Object )
   at Test.Core.AppCommandPipeline.Execute(AppCommand appCommand, Object parameters)
   at Test.Core.AppCommandPipeline.Execute(String appCommandString, Object parameters)
   at Test.Core.AppEngine.ExecuteCommand(String appCommand)
   at Test.Core.BaseController.<Execute>d__17.MoveNext()
   at System.Runtime.CompilerServices.AsyncVoidMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Test.Core.BaseController.Execute(String appCommand)
   at Test.Ticket.Controllers.PaymentController.<Pay>d__11.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.InvokeMoveNext(Object stateMachine)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
   at System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation.<>c.<.cctor>b__8_0(Object state)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
   at Test.Ticket.Desktop.App.Main()

Answer 1

问题是我们打电话给

_device.TransactionPrint((UPOSPrinterStation)station, PrinterTransactionControl.Normal);

连续两次。因此，我们实现了一个bool属性来检查打印机是否在"TransactionMode“中，并且只有当这是真的时才调用TransactionPrint。

打印机没有打印的实际问题是打印机驱动程序没有工作。我们得重新安装打印机驱动程序。我们认为窗户更新是罪魁祸首。

另一个奇怪的事情是，在其他测试中，相同的机制(两次调用该方法)不会产生错误。很奇怪..。

Answer 2

规范ErrorCode是在0或101-115范围内的值.

如果通知了其他值(65535)，则认为创建服务对象的供应商定义了一些唯一的错误并通知了它。

ErrorCode枚举(POS用于.NET v1.12SDK文档)

类似地，ErrorCodeExtended的值将是供应商自己的定义。

有关值，请参考其中一个站点上的包含文件。

CommonControlOnjects当前版本

kunif/OPOS-CCO

如注释中所述，请添加创建设备和服务对象的供应商和设备模型。

如果有人使用来自同一供应商的相同模型，您可以共享信息。

但是，您可能需要与供应商的支持台联系以获得更多信息。

根据添加的供应商和模型信息：

供应商页面声明支持OPOS、OPOS.NET和JavaPOS驱动程序，但是下载列表中只有JavaPOS。

VKP80III