LUIS 响应引发 Bad Request 错误

Question

我已经开始将 Luis 集成到我的 BOT 中。 LUIS 查询在浏览器中运行良好，但通过代码调用时，LUIS GetResult 的响应会引发错误。

LUIS 查询是 here

对话框的源代码：

 [LuisModel("2d3e39d8-632a-4e00-bf2f-d98ea4b2ed79&", "subscription Key")]
    [Serializable]
    public class SupportDialog : LuisDialog<object>
    {

        [LuisIntent("")]
        public async Task None(IDialogContext context, LuisResult result)
        {
            await context.PostAsync("Sorry, I dont understand what you need");
            context.Wait(MessageReceived);
        }


        [LuisIntent("OrderStatus")]
        public async Task OrderStatus(IDialogContext context, LuisResult result)
        {
            var returnMsg = "You wanted to check the order status";
            var orderStatus = "Dispatched";
            var deliveryDate = DateTime.Now.AddDays(3);

            var entities = new List<EntityRecommendation>(result.Entities);
            if(entities.Any((entity)=> entity.Type == "Order"))
            {
                var orderEntity = entities.Where((entity) => entity.Type == "Order").FirstOrDefault();
                var resolutionStr = orderEntity.Resolution.FirstOrDefault().Value ?? null;
                if(!string.IsNullOrEmpty(resolutionStr))
                {
                    returnMsg = "Your order " + resolutionStr + " status is " + orderStatus + " and expected to deliver by " + deliveryDate.Humanize();
                }
            }

            await context.PostAsync(returnMsg);
            context.Wait(MessageReceived);
        }

    }

消息控制器源代码：

 internal static IDialog<object> MakeRoot()
        {
            return Chain.From(() => new SupportDialog());
        }

        [ResponseType(typeof(void))]
        public virtual async Task<HttpResponseMessage> Post([FromBody] Activity activity)
        {
            if (activity != null)
            {
                // one of these will have an interface and process it
                switch (activity.GetActivityType())
                {
                    case ActivityTypes.Message:
                        await Conversation.SendAsync(activity, MakeRoot);
                        break;

                    case ActivityTypes.ConversationUpdate:
                    case ActivityTypes.ContactRelationUpdate:
                    case ActivityTypes.Typing:
                    case ActivityTypes.DeleteUserData:
                    default:
                        Trace.TraceError($"Unknown activity type ignored: {activity.GetActivityType()}");
                        break;
                }
            }
            return new HttpResponseMessage(System.Net.HttpStatusCode.Accepted);
        }

我在尝试调试时在我的 BOT 模拟器中收到以下错误（仅部分提取）：

> Exception: System.Net.Http.HttpRequestException: Response status code
> does not indicate success: 400 (Bad Request).\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Luis.LuisService.<Microsoft-Bot-Builder-Luis-ILuisService-QueryAsync>d__4.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Luis.Extensions.<QueryAsync>d__3.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.LuisDialog`1.<MessageReceived>d__7.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.ThunkResume`1.<Rest>d__4.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Wait`2.<Microsoft-Bot-Builder-Internals-Fibers-IWait<C>-PollAsync>d__19.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Frame`1.<Microsoft-Bot-Builder-Internals-Fibers-IFrameLoop<C>-PollAsync>d__7.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Fiber`1.<Microsoft-Bot-Builder-Internals-Fibers-IFiberLoop<C>-PollAsync>d__13.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n  
> at
> Microsoft.Bot.Builder.Internals.Fibers.Wait`2.Microsoft.Bot.Builder.Internals.Fibers.IAwaiter<T>.GetResult()\r\n
> at
> Microsoft.Bot.Builder.Dialogs.Chain.FromDialog`1.<ResumeAsync>d__3.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.ThunkResume`1.<Rest>d__4.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Wait`2.<Microsoft-Bot-Builder-Internals-Fibers-IWait<C>-PollAsync>d__19.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Frame`1.<Microsoft-Bot-Builder-Internals-Fibers-IFrameLoop<C>-PollAsync>d__7.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Fiber`1.<Microsoft-Bot-Builder-Internals-Fibers-IFiberLoop<C>-PollAsync>d__13.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n  
> at
> Microsoft.Bot.Builder.Internals.Fibers.Wait`2.Microsoft.Bot.Builder.Internals.Fibers.IAwaiter<T>.GetResult()\r\n
> at
> Microsoft.Bot.Builder.Dialogs.Chain.LoopDialog`1.<ResumeAsync>d__3.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.ThunkResume`1.<Rest>d__4.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Wait`2.<Microsoft-Bot-Builder-Internals-Fibers-IWait<C>-PollAsync>d__19.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Frame`1.<Microsoft-Bot-Builder-Internals-Fibers-IFrameLoop<C>-PollAsync>d__7.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Internals.Fibers.Fiber`1.<Microsoft-Bot-Builder-Internals-Fibers-IFiberLoop<C>-PollAsync>d__13.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IDialogStack-PollAsync>d__19.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__21`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.ReactiveDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__5`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.ExceptionTranslationDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__2`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.LocalizedDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__2`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.ScoringDialogTask`1.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__6`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.PersistentDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__6`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n  
> at
> Microsoft.Bot.Builder.Dialogs.Internals.PersistentDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__6`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.SerializingDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__4`1.MoveNext()\r\n---
> End of stack trace from previous location where exception was thrown
> ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
> task)\r\n   at
> System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n   at
> Microsoft.Bot.Builder.Dialogs.Internals.PostUnhandledExceptionToUserTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__5`1.MoveNext()

Answer 1

有一行代码可以抛出空引用异常：

var resolutionStr = orderEntity.Resolution.FirstOrDefault().Value ?? null;

尝试用下一种方式重写它：

var resolutionStr = orderEntity.Resolution.FirstOrDefault()?.Value;

Answer 2

删除 LuisModel 中的符号。

我猜你不小心从 URL 复制了它。

此外，请更改您在代码中发布的订阅密钥，否则我们会窃取它。

Answer 3

This below error may also come; when you publish LUIS app under Staging slot

Response status code does not indicate success: 400 (Bad Request)

So always publish your LUIS app under Production slot

显然，您必须从您的 LuisModel ID 中删除符号 (&)。

LUIS 响应引发 Bad Request 错误

LUIS response throws error with Bad Request

c#

azure

botframework

azure-language-understanding

azure-cognitive-services