我正在尝试创建一个在处理消息时监视消息队列的应用程序。
为了对消息队列进行快照，我编写了以下代码：
MessageEnumerator msgEnum = null;
try
{
// some code that fetches q (the queue)
msgEnum = q.GetMessageEnumerator2();
while (msgEnum.MoveNext())
{
Message current = msgEnum.Current;
Envelope msg = current.Body as Envelope;
// do something with the message
}
}
catch (Exception ex)
{
// handle exception
}
finally
{
if (msgEnum != null)
msgEnum.Close();
}
然而，当另一个应用程序向队列中发送大量消息时，我得到了上述异常。
我真的很困惑为什么会发生这种情况以及我需要做些什么才能让它发挥作用。
我也尝试使用GetAllMessages导致相同的异常。
欢迎任何帮助和/或解释。
编辑： 堆栈跟踪：
Error message: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: An invalid handle was passed to the function. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.Messaging.MessageQueueException: An invalid handle was passed to the function.
at System.Messaging.MessageEnumerator.MoveNext(TimeSpan timeout)
at Astea.AO.API.ControllerService.GetMessagesHeaders(String profileName, MessageQueueType queueType) in c:\Astea Alliance 11.0\Src\Framework\Astea.AO.API\Astea.AO.API.ControllerService\ControllerService.cs:line 170
at SyncInvokeGetMessagesHeaders(Object , Object[] , Object[] )
at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)).
Stack trace: at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at APIConsoleWeb.Utils.Util.ReportError(String message) in c:\Astea Alliance 11.0\API.Controller\API.Controller\Utils\Util.cs:line 14
at APIConsoleWeb.Controllers.QueueMessagesController.GetMessagesHeaders(String profileName, MessageQueueType queueType) in c:\Astea Alliance 11.0\API.Controller\API.Controller\Controllers\QueueMessagesController.cs:line 37
at lambda_method(Closure , Object , Object[] )
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
at System.Web.Http.Tracing.Tracers.HttpActionDescriptorTracer.<>c__DisplayClass4.<ExecuteAsync>b__1()
at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync[TResult](ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Func`1 execute, Action`2 endTrace, Action`1 errorTrace)
at System.Web.Http.Tracing.Tracers.HttpActionDescriptorTracer.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore(HttpActionContext actionContext, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsync(HttpActionContext actionContext, CancellationToken cancellationToken)
at System.Web.Http.Tracing.Tracers.HttpActionInvokerTracer.<>c__DisplayClass4.<System.Web.Http.Controllers.IHttpActionInvoker.InvokeActionAsync>b__1()
at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync[TResult](ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Func`1 execute, Action`2 endTrace, Action`1 errorTrace)
at System.Web.Http.Tracing.Tracers.HttpActionInvokerTracer.System.Web.Http.Controllers.IHttpActionInvoker.InvokeActionAsync(HttpActionContext actionContext, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ActionFilterResult.ActionInvoker.InvokeActionAsync()
at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync(CancellationToken cancellationToken)
at System.Web.Http.ApiController.ExecuteAsync(HttpControllerContext controllerContext, CancellationToken cancellationToken)
at System.Web.Http.Tracing.Tracers.HttpControllerTracer.<ExecuteAsyncCore>d__5.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore(HttpControllerContext controllerContext, CancellationToken cancellationToken)
at System.Web.Http.Tracing.Tracers.HttpControllerTracer.<>c__DisplayClass3.<System.Web.Http.Controllers.IHttpController.ExecuteAsync>b__0()
at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync[TResult](ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Func`1 execute, Action`2 endTrace, Action`1 errorTrace)
at System.Web.Http.Tracing.Tracers.HttpControllerTracer.System.Web.Http.Controllers.IHttpController.ExecuteAsync(HttpControllerContext controllerContext, CancellationToken cancellationToken)
at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.Dispatcher.HttpRoutingDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.<>n__FabricatedMethod6(HttpRequestMessage , CancellationToken )
at System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.<>c__DisplayClass4.<SendAsync>b__1()
at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync[TResult](ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Func`1 execute, Action`2 endTrace, Action`1 errorTrace)
at System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.HttpServer.<>n__FabricatedMethod9(HttpRequestMessage , CancellationToken )
at System.Web.Http.HttpServer.<SendAsync>d__0.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.HttpServer.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.WebHost.HttpControllerHandler.<ProcessRequestAsyncCore>d__0.MoveNext()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
at System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore(HttpContextBase contextBase)
at System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsync(HttpContext context)
at System.Web.HttpTaskAsyncHandler.<>c__DisplayClass1.<System.Web.IHttpAsyncHandler.BeginProcessRequest>b__0()
at System.Web.TaskAsyncHelper.BeginTask(Func`1 taskFunc, AsyncCallback callback, Object state)
at System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
at System.Web.HttpApplication.PipelineStepManager.ResumeSteps(Exception error)
at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb)
at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion(IntPtr pHandler, RequestNotificationStatus& notificationStatus)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)