集成 QnAMaker 和 Luis - 异常堆栈为空

Question

如果意图是 none，则使用 Luis 对话框，我想转发到 QnAMakerDialog 以匹配 QnAPair。

如果找到对，return 答案和 return 到 luis 堆栈。如果一对未发送消息 "Sorry I don't know that" 和 return 到 luis 堆栈等待另一条消息。

我已成功收到 await context.Forward(qnaDialog, AfterQnADialog, messageToForward, CancellationToken.None) 的回复。在响应 returned 之后，模拟器抛出 Exception Stack is empty [File Type 'text/plain']

我认为错误在 AfterQnADialog 中，但不确定如何修复它。预先感谢您的帮助。

消息控制器*

if (activity.Type == ActivityTypes.Message)
    {
       await Conversation.SendAsync(activity, () => new Dialogs.RootLuisDialog());
    }

Luis Dialog Class

[LuisIntent("")]
[LuisIntent("None")]    
public async Task None(IDialogContext context, IAwaitable<IMessageActivity> message ,LuisResult result)
    {

        var qnaDialog = new QnADialog();
        var messageToForward = await message;
        await context.Forward(qnaDialog, AfterQnADialog, messageToForward, CancellationToken.None);

    }

...

private async Task AfterQnADialog(IDialogContext context, IAwaitable<object> result)
   {
        var messageHandled = await result;

        if (messageHandled == null)
        {
            await context.PostAsync("I’m not sure what you want.");
        }

        context.Wait(this.MessageReceived);
    }

QnAMakerDialog Class

    [QnAMaker("<QnAMakerAppID", "QnAMakerApiKey", "I don't understand this right now! Try another query!", 0.10, 1)]
    public class QnADialog : QnAMakerDialog
    { 

    }
}

Answer 1

我用下面的示例代码进行了测试，如果没有匹配的意图，我会从 LUIS 对话框将消息转发到 QnAMakerDialog，这对我有用，你可以参考它。

在 LUIS 对话框中：

[LuisIntent("None")]
public async Task NoneIntent(IDialogContext context, LuisResult result)
{

    await context.Forward(new QnADialog(), AfterQnADialog, context.Activity, CancellationToken.None);
}

QnAMakerDialog:

using Microsoft.Bot.Builder.Dialogs;
using QnAMakerDialog;
using QnAMakerDialog.Models;
using System;
using System.Linq;
using System.Threading.Tasks;


namespace HalChatBot.Dialogs
{

    [Serializable]
    [QnAMakerService("{subscriptionKey_here}", "{ knowledgeBaseId_here}")]
    public class QnADialog : QnAMakerDialog<object>
    {
        public override async Task NoMatchHandler(IDialogContext context, string originalQueryText)
        {
            await context.PostAsync($"Sorry, I couldn't find an answer for '{originalQueryText}'.");
            context.Done(false);
        }

        public override async Task DefaultMatchHandler(IDialogContext context, string originalQueryText, QnAMakerResult result)
        {
            await context.PostAsync($"I found {result.Answers.Length} answer(s) that might help...{result.Answers.First().Answer}.");
            context.Done(true);
        }
    }

注意：我收到相同的异常消息："Stack is empty" 如果我不覆盖 NoMatchHandler 并调用 context.Done 将控制传递回父对话框。

更新：

您似乎正在使用 Microsoft.Bot.Builder.CognitiveServices.QnAMaker in your project. If that is the case, you do not need to install QnAMakerDialog。为避免 "Stack is empty" 错误，您可以覆盖 RespondFromQnAMakerResultAsync 并调用 context.Done 将控制权交还给父对话框。

[Serializable]
[QnAMaker("{subscriptionKey_here}", "{knowledgeBaseId_here}")]
public class BaiscQnaDialog : Microsoft.Bot.Builder.CognitiveServices.QnAMaker.QnAMakerDialog
{
    protected override async Task RespondFromQnAMakerResultAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result)
    {
        await context.PostAsync($"I found {result.Answers.Count} answer(s) that might help...{result.Answers.First().Answer}.");
        context.Done(true);
    }
}

测试结果：

集成 QnAMaker 和 Luis - 异常堆栈为空

Integrating QnAMaker and Luis - Exception Stack is empty

c#

botframework

qnamaker