Botframework-solutions: Bot.Builder.Community.Adapters.Alexa 不与 VA 一起工作

什么项目受到影响？

虚拟助手。

这是什么语言？

C＃

发生什么了？

BotBuilder.Community.Adapters.Alexa 似乎不适用于 VA。

重现此问题的步骤是什么？

按照此处的说明进行操作https://github.com/BotBuilderCommunity/botbuilder-community-dotnet/tree/develop/libraries/Bot.Builder.Community.Adapters.Alexa

1) 在 Startup.cs 中，我添加了以下 NuGet 包：

Bot.Builder.Community.Adapters.Alexa;
Bot.Builder.Community.Adapters.Alexa.Integration.AspNet.Core；
Bot.Builder.Community.Adapters.Alexa.Middleware;

这段代码之前

            // Configure bot
            services.AddTransient<IBot, DialogBot<MainDialog>>();

我补充说：

            // Registering the AlexaHttpAdapter
            services.AddSingleton<IAlexaHttpAdapter>((sp) =>
            {
                var alexaHttpAdapter = new AlexaHttpAdapter(validateRequests: true)
                {
                    OnTurnError = async (context, exception) =>
                    {
                        await context.SendActivityAsync("Sorry, something went wrong. Please try again later." + context + " Exception:" + exception);
                    },
                    ShouldEndSessionByDefault = true,
                    ConvertBotBuilderCardsToAlexaCards = false,
                };
                alexaHttpAdapter.Use(new AlexaIntentRequestToMessageActivityMiddleware());
                return alexaHttpAdapter;
            });

            services.AddSingleton<AlexaIntentRequestToMessageActivityMiddleware>();

2）创建一个Alexa控制器：

using Bot.Builder.Community.Adapters.Alexa.Integration.AspNet.Core;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Bot.Builder;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace GuideDogs_VA.Controllers
{
    [Route("api/skillrequests")]
    [ApiController]
    public class AlexaBotController : ControllerBase
    {
        private readonly IAlexaHttpAdapter _adapter;
        private readonly IBot _bot;

        public AlexaBotController(IAlexaHttpAdapter adapter, IBot bot)
        {
            _adapter = adapter;
            _bot = bot;
        }

        [HttpPost]
        public async Task PostAsync()
        {
            await _adapter.ProcessAsync(Request, Response, _bot);
        }
    }
}

3) 使用以下 JSON 创建一个 Alexa 技能：

{
    "interactionModel": {
        "languageModel": {
            "invocationName": "guide dogs",
            "intents": [
                {
                    "name": "GetUserIntent",
                    "slots": [
                        {
                            "name": "phrase",
                            "type": "phrase"
                        }
                    ],
                    "samples": [
                        "{phrase}"
                    ]
                },
                {
                    "name": "AMAZON.FallbackIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.NavigateHomeIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.CancelIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.HelpIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.StopIntent",
                    "samples": []
                }
            ],
            "types": [
                {
                    "name": "phrase",
                    "values": [
                        {
                            "name": {
                                "value": "hi there Alexa"
                            }
                        },
                        {
                            "name": {
                                "value": "you are just going to repeat what I said aren't you"
                            }
                        },
                        {
                            "name": {
                                "value": "what colour is the sky?"
                            }
                        }
                    ]
                }
            ]
        }
    }
}

你期待发生什么？

当通过 Alexa 的开发人员控制台或通过 Alexa 设备测试 Alexa 技能时，它会做出响应，但不幸的是，即使活动类型是消息类型，它最终也会调用 OnEventSync()。

你能分享任何日志、错误输出等吗？

从 MainDialog.cs 文件抛出的 System.NullReferenceException：

任何屏幕截图或其他上下文？

VA 对 Alexa 的响应（从 Startup.cs context.SendActi vityAsync生成的响应

{
    "body": {
        "version": "1.0",
        "response": {
            "outputSpeech": {
                "type": "PlainText",
                "text": "Sorry, something went wrong. Please try again later.Microsoft.Bot.Builder.TurnContext Exception:System.NullReferenceException: Object reference not set to an instance of an object.\r\n   at GuideDogs_VA.Dialogs.MainDialog.OnEventAsync(DialogContext dc, CancellationToken cancellationToken) in C:\\Users\\hussel\\source\\repos\\GuideDogs-VA\\GuideDogs_VA\\Dialogs\\MainDialog.cs:line 204\r\n   at Microsoft.Bot.Builder.Solutions.Dialogs.RouterDialog.OnContinueDialogAsync(DialogContext innerDc, CancellationToken cancellationToken)\r\n   at Microsoft.Bot.Builder.Dialogs.ComponentDialog.BeginDialogAsync(DialogContext outerDc, Object options, CancellationToken cancellationToken)\r\n   at Microsoft.Bot.Builder.Dialogs.DialogContext.BeginDialogAsync(String dialogId, Object options, CancellationToken cancellationToken)\r\n   at Microsoft.Bot.Builder.Dialogs.DialogExtensions.RunAsync(Dialog dialog, ITurnContext turnContext, IStatePropertyAccessor`1 accessor, CancellationToken cancellationToken)\r\n   at GuideDogs_VA.Bots.DialogBot`1.OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken) in C:\\Users\\hussel\\source\\repos\\GuideDogs-VA\\GuideDogs_VA\\Bots\\DialogBot.cs:line 39\r\n   at Bot.Builder.Community.Adapters.Alexa.Middleware.AlexaIntentRequestToMessageActivityMiddleware.OnTurnAsync(ITurnContext context, NextDelegate next, CancellationToken cancellationToken)\r\n   at Microsoft.Bot.Builder.MiddlewareSet.ReceiveActivityWithStatusAsync(ITurnContext turnContext, BotCallbackHandler callback, CancellationToken cancellationToken)\r\n   at Microsoft.Bot.Builder.BotAdapter.RunPipelineAsync(ITurnContext turnContext, BotCallbackHandler callback, CancellationToken cancellationToken)"
            },
            "directives": [],
            "shouldEndSession": true,
            "type": "_DEFAULT_RESPONSE"
        },
        "sessionAttributes": {}
    }
}