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如何将LUIS服务与bot集成？

Omair Zia 发表于 Dev
42
奥迈尔·齐亚（Omair Zia）

我正在开发使用LUIS的CORTANA应用程序，“根”对话框正在消耗LUIS，并且基于用户意图，我将其重定向到另一个对话框，但是我发现执行“根”对话框构造函数后会发生异常，而我有另一个没有LUIS的对话框（即InsightsDialog在下面评论）工作正常。

以下代码从MessagesController重定向到“根对话框”：

public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
        {
            if (activity.Type == ActivityTypes.Message)
            {
                    await Conversation.SendAsync(activity, () => new Dialogs.RootDialog());
                   //await Conversation.SendAsync(activity, () => new Dialogs.InsightsDialog());
            }
            else
            {
                await HandleSystemMessage(activity);
            }

            var response = Request.CreateResponse(HttpStatusCode.OK);
            return response;
        }

根对话框代码：

[Serializable]
    public class RootDialog : LuisDialog<object>
    {
        InsightsDialog customerInsightsDialog = null;
        public RootDialog() : base(new LuisService(Utility.GetLUISAttributesFromConfig()))
        {
            customerInsightsDialog = new InsightsDialog();
        }
        public static LuisModelAttribute GetLUISAttributesFromConfig()
        {
                return new LuisModelAttribute(Constants.RootDialogLuisModelId, Constants.RootDialogLuisSubscriptionKey);
        }

       #region Intents
        [LuisIntent("")]
        [LuisIntent("None")]
        public async Task None(IDialogContext context, LuisResult result)
        {
                string userInput = result.Query;
                context.Call(customerInsightsDialog, ResumeAfterInsightsDialog);
        }

        [LuisIntent("Greetings")]
        public async Task Greetings(IDialogContext context, LuisResult result)
        {
                string userInput = result.Query;
                context.Call(customerInsightsDialog, ResumeAfterInsightsDialog);
        }

        private Task ResumeAfterInsightsDialog(IDialogContext context, IAwaitable<object> result)
        {
            return Task.CompletedTask;
        }
       #endregion
    }

我在日志中发现以下异常，它在调用RootDialog类的构造函数后立即发生：

System.ArgumentNullException: Value cannot be null.
Parameter name: stringToEscape
   at System.Uri.EscapeDataString(String stringToEscape)
   at Microsoft.Bot.Builder.Luis.LuisRequest.BuildUri(ILuisModel model)
   at Microsoft.Bot.Builder.Luis.LuisService.Microsoft.Bot.Builder.Luis.ILuisService.BuildUri(LuisRequest luisRequest)
   at Microsoft.Bot.Builder.Luis.Extensions.<QueryAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.LuisDialog`1.<MessageReceived>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.ThunkResume`1.<Rest>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Wait`2.<Microsoft-Bot-Builder-Internals-Fibers-IWait<C>-PollAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Frame`1.<Microsoft-Bot-Builder-Internals-Fibers-IFrameLoop<C>-PollAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Fiber`1.<Microsoft-Bot-Builder-Internals-Fibers-IFiberLoop<C>-PollAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Bot.Builder.Internals.Fibers.Wait`2.Microsoft.Bot.Builder.Internals.Fibers.IAwaiter<T>.GetResult()
   at Microsoft.Bot.Builder.Dialogs.Chain.LoopDialog`1.<ResumeAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.ThunkResume`1.<Rest>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Wait`2.<Microsoft-Bot-Builder-Internals-Fibers-IWait<C>-PollAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Frame`1.<Microsoft-Bot-Builder-Internals-Fibers-IFrameLoop<C>-PollAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Internals.Fibers.Fiber`1.<Microsoft-Bot-Builder-Internals-Fibers-IFiberLoop<C>-PollAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.DialogTask.<Microsoft-Bot-Builder-Base-IEventLoop-PollAsync>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.ReactiveDialogTask.<Microsoft-Bot-Builder-Base-IEventLoop-PollAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.ScoringEventLoop`1.<Microsoft-Bot-Builder-Base-IEventLoop-PollAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.EventLoopDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.SetAmbientThreadCulture.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.QueueDrainingDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.PersistentDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.Bot.Builder.Dialogs.Internals.PersistentDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.ExceptionTranslationDialogTask.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.SerializeByConversation.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.PostUnhandledExceptionToUser.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.Bot.Builder.Dialogs.Internals.PostUnhandledExceptionToUser.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Internals.LogPostToBot.<Microsoft-Bot-Builder-Dialogs-Internals-IPostToBot-PostAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Conversation.<SendAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Bot.Builder.Dialogs.Conversation.<SendAsync>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at CustomerInsights.MessagesController.<Post>d__0.MoveNext()

该代码在模拟器和Web聊天频道上运行良好，但仅在CORTANA频道上引发了异常。感谢帮助我。

奥迈尔·齐亚（Omair Zia）

通过修改类“ MessagesController”的现有代码，可以解决此问题，如下所示：

public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
        {
            if (activity.Type == ActivityTypes.Message)
            {
                  if (string.IsNullOrEmpty(activity.Text))
                     {
                          var connector = new ConnectorClient(new Uri(activity.ServiceUrl));

                          Activity reply = activity.CreateReply();
                          reply.Text = string.Format(Resources.WELCOME_MESSAGE, Constants.UserInfo.FullName);
                          reply.Speak = SSMLHelper.Speak(string.Format(Resources.WELCOME_MESSAGE, Constants.UserInfo.FullName));
                          reply.InputHint = InputHints.ExpectingInput;

                          await connector.Conversations.ReplyToActivityAsync(reply);
                     }
                 else
                    {
                          await Conversation.SendAsync(activity, () => new Dialogs.RootDialog());
                     }
            }
            else
            {
                await HandleSystemMessage(activity);
            }

            var response = Request.CreateResponse(HttpStatusCode.OK);
            return response;
        }

实际上，“活动”对象的“文本”属性为空。因此，现在我要求用户输入（通过语音）一些文本以进一步进行操作。

本文收集自互联网，转载请注明来源。

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