C# Hangfire-为什么fire是一个“忘记”的例外

我有一个web api控制器操作，用于导入电子商务订单。呼叫服务器要求在5秒内做出响应，否则它认为响应失败。因此，我们希望接受请求并提交一个fire和forget Hangfire作业，以便在其自身过程中单独运行，并让控制器成功地

返回新的HttpStatusCodeResult（HttpStatusCode.OK，msg）立即，无论提交作业的结果如何

问题是，在排队的Hangfire作业中运行的方法中抛出了一个
异常
，即它是在
orderSyncAppServ.UpdateOrderFromWebhookAsync
方法中抛出的，该方法也是一个异步方法。我们可以在Hangire仪表板中看到这一点，查看作业结果并查看异常

不希望也不希望的是，调用服务器没有得到200响应，而是收到了一些错误响应。这怎么可能，或者我的期望哪里被误导了

更新：

有趣的是，当我调试代码时，控制器操作中的最终返回会在我在
orderSyncAppServ.UpdateOrderFromWebhookAsync
方法中的断点之前到达……所以现在我真的很困惑调用系统如何没有得到200响应：（该系统是Shopify，而不是我自己的环境，它们不提供查看响应的方法，但我的web服务器IIS日志确实显示了500个响应代码

这是我的密码：

[HttpPost]
public async Task<ActionResult> OrderUpdated (int storefrontId)
{
    string msg = "Successfully submitted update request to system.";
    string webhook = "orders/updated";

    try
    {
        var validationResult = await ValidateStorefrontWebhook(webhook, storefrontId);
        if (!validationResult.WasSuccessful) return new HttpStatusCodeResult(HttpStatusCode.OK, validationResult.Message);

        var orderSyncAppServ = new SyncErpWithPlacedOrdersTask();
        **Hangfire.BackgroundJob.Enqueue(() => orderSyncAppServ.UpdateOrderFromWebhookAsync(validationResult.Value, storefrontId));**
    }
    catch (Exception e)
    {
        msg = $"Exception webhook: {webhook} for storefront Id: {storefrontId}. {e.Message}.";
        _logger.Error(msg);
    }
    return new HttpStatusCodeResult(HttpStatusCode.OK, msg);
}

有趣的是，当我调试代码时
控制器操作在我在
orderSyncAppServ.UpdateOrderFromWebhookAsync方法

这是预期的行为。
UpdateOrderFromWebhookAsync
由Hangfire在进程外执行，但有一定的延迟

我认为你实际上可能有两个错误：


第一个，
Error将值{null}转换为类型“System.Int64”…
似乎链接到
validationResult.value
（预期为Int64的第一项的
字段变量id
的null值）。此错误在hangfire处于处理级别时触发。这不是控制器返回的错误，控制器早就返回了
第二个似乎与控制器参数的反序列化有关。这是调用者正在获取的参数，这就是它未被捕获的原因（发生在try…catch块之前）。我的建议是：记录服务器收到的确切请求。在本地复制。跟踪异常，如重复的参数。简化请求，直到确定问题

很抱歉，这不是一个真实的答案，但很难在评论中详细说明。
您能在问题中包括具体的错误回答吗？@TheodorZoulias是的，对不起。它现在就在那里。嗯。我不知道可能是什么问题，但可能有其他人可以帮助。@TheodorZoulias好的，谢谢您花时间查看它。是的，它是indeed 2我发现了两个独立的问题。请参阅我的独立问题，该问题与此问题的真正令人困惑的方面相隔离，
系统。ArgumentException:已添加具有相同密钥的项
错误……此外，它还有一个赏金：）
System.ArgumentException: An item with the same key has already been added.
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionary backingStore, String prefix, Object value)
   at System.Web.Mvc.JsonValueProviderFactory.GetValueProvider(ControllerContext controllerContext)
   at System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider(ControllerContext controllerContext)
   at System.Web.Mvc.ControllerBase.get_ValueProvider()
   at System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor)
   at System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_1.<BeginInvokeAction>b__0(AsyncCallback asyncCallback, Object asyncState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state)
   at System.Web.Mvc.Controller.<>c.<BeginExecuteCore>b__152_0(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout)
   at System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout)
   at System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state)
   at System.Web.Mvc.MvcHandler.<>c.<BeginProcessRequest>b__20_0(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout)
   at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.<>c__DisplayClass285_0.<ExecuteStepImpl>b__0()
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Newtonsoft.Json.JsonSerializationException
Error converting value {null} to type 'System.Int64'. Path '[0].line_items[0].variant_id', line 1, position 2584.

Newtonsoft.Json.JsonSerializationException: Error converting value {null} to type 'System.Int64'. Path '[0].line_items[0].variant_id', line 1, position 2584. ---> System.InvalidCastException: Null object cannot be converted to a value type.
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   --- End of inner exception stack trace ---
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
   at ShopifyStorefrontAdapter.AppServ.ShopifyStoreFrontAdapter.<ConvertJsonOrderToOrderImportDTOList>d__13.MoveNext() in C:\inetpub\wwwroot\mozzo\Main\app\StoreFrontAdapters\ShopifyStorefrontAdapter\AppServ\ShopifyStoreFrontAdapter.cs:line 297
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at OTIS.AppServ.OrderMgmt.SyncErpWithPlacedOrdersTask.<UpdateOrderFromWebhook>d__12.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()