Question

I am needing some help. I am new at developing in Azure's Bot Framework, creating my first chatbot some weeks ago using a QnA KB. In any case, I managed to create the bot in Azure's portal and it is working perfectly. But I need to do some alterations and tests in Bot Framework Emulator (using V4) and, to do so, download and run locally my bot.

I made the download of my bot's .zip file following Azure's instructions and initialized it using Visual Studio 2017 as my IDE. When I hit the button "debug", though, the program tries to connect to localhost:3984.

using Autofac;
using System.Web.Http;
using System.Configuration;
using System.Reflection;
using Microsoft.Bot.Builder.Azure;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Builder.Dialogs.Internals;
using Microsoft.Bot.Connector;

namespace SimpleEchoBot
{
    public class WebApiApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            // Bot Storage: This is a great spot to register the private state storage for your bot. 
            // We provide adapters for Azure Table, CosmosDb, SQL Azure, or you can implement your own!
            // For samples and documentation, see: https://github.com/Microsoft/BotBuilder-Azure

            Conversation.UpdateContainer(
                builder =>
                {
                    builder.RegisterModule(new AzureModule(Assembly.GetExecutingAssembly()));

                    // Using Azure Table Storage

                    var store = new TableBotDataStore(ConfigurationManager.AppSettings["AzureWebJobsStorage"]); // requires Microsoft.BotBuilder.Azure Nuget package 

                    // To use CosmosDb or InMemory storage instead of the default table storage, uncomment the corresponding line below
                    // var store = new DocumentDbBotDataStore("cosmos db uri", "cosmos db key"); // requires Microsoft.BotBuilder.Azure Nuget package 
                    // var store = new InMemoryDataStore(); // volatile in-memory store

                    builder.Register(c => store)
                        .Keyed<IBotDataStore<BotData>>(AzureModule.Key_DataStore)
                        .AsSelf()
                        .SingleInstance();

                });
            GlobalConfiguration.Configure(WebApiConfig.Register);
        }
    }
}

In matter of seconds, though, the following line of code returns the error System.ArgumentNullException: 'Value cannot be null. Arg_ParamName_Name':

var store = new TableBotDataStore(ConfigurationManager.AppSettings["AzureWebJobsStorage"]); // requires Microsoft.BotBuilder.Azure Nuget package

As a consequence, I am unable to test my bot in the Bot Framework Emulator. Since I am really new with C#, could anyone give me a hand at solving this?

EDIT: Here is my web.config part of the code, just removing sensitive data:

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=301879
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <appSettings>
    <!-- update these with your Microsoft App Id and your Microsoft App Password-->
    <!--<add key="BotId" value="" />-->
    <add key="MicrosoftAppId" value="" />
    <add key="MicrosoftAppPassword" value="" />
    <add key="QnaSubscriptionKey" value="" />
    <add key="QnaKnowledgebaseId" value="" />
    <add key="AzureWebJobsStorage" value="" />

  </appSettings>
  <!--
    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.

    The following attributes can be set on the <httpRuntime> tag.
      <system.Web>
        <httpRuntime targetFramework="4.6" />
      </system.Web>
  -->
  <system.web>
    <customErrors mode="Off" />
    <compilation debug="true" targetFramework="4.6" />
    <httpRuntime targetFramework="4.6" />
  </system.web>
  <system.webServer>
    <defaultDocument>
      <files>
        <clear />
        <add value="default.htm" />
      </files>
    </defaultDocument>
    <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.IdentityModel.Tokens.Jwt" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.4.0" newVersion="5.1.4.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.IdentityModel.Protocol.Extensions" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.0.40306.1554" newVersion="1.0.40306.1554" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Bot.Connector" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.15.2.2" newVersion="3.15.2.2" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Bot.Builder" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.15.2.2" newVersion="3.15.2.2" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Azure.Documents.Client" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.11.0.0" newVersion="1.11.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Bot.Builder.History" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.12.2.4" newVersion="3.12.2.4" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Bot.Builder.Autofac" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.15.2.2" newVersion="3.15.2.2" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Services.Client" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.7.0.0" newVersion="5.7.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.OData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.7.0.0" newVersion="5.7.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.7.0.0" newVersion="5.7.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
</configuration>

EDIT 2: Some screenshots of the issue so far:

EDIT 3: Trying to solve "Please set QnAKnowledgebaseId, QnAAuthKey and QnAEndpointHostName (if applicable) in App Settings. Learn how to get them at https://aka.ms/qnaabssetup.". Basic QnAMakerDialog.cs so far (the first instances of qnaAuthKey, qnaKBId and endpointHostName had values attributed to them, but I erased them at here for safety):

using System;
using System.Threading;
using System.Threading.Tasks;

using Microsoft.Bot.Builder.Azure;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Builder.CognitiveServices.QnAMaker;
using Microsoft.Bot.Connector;
using System.Configuration;
namespace Microsoft.Bot.Sample.QnABot
{
    [Serializable]
    public class RootDialog : IDialog<object>
    {
        public async Task StartAsync(IDialogContext context)
        {
            /* Wait until the first message is received from the conversation and call MessageReceviedAsync 
            *  to process that message. */
            context.Wait(this.MessageReceivedAsync);
        }

        private async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
        {
            /* When MessageReceivedAsync is called, it's passed an IAwaitable<IMessageActivity>. To get the message,
             *  await the result. */
            var message = await result;

            var qnaAuthKey = GetSetting("");
            var qnaKBId = ConfigurationManager.AppSettings[""];
            var endpointHostName = ConfigurationManager.AppSettings[""];

            // QnA Subscription Key and KnowledgeBase Id null verification
            if (!string.IsNullOrEmpty(qnaAuthKey) && !string.IsNullOrEmpty(qnaKBId))
            {
                // Forward to the appropriate Dialog based on whether the endpoint hostname is present
                if (string.IsNullOrEmpty(endpointHostName))
                    await context.Forward(new BasicQnAMakerPreviewDialog(), AfterAnswerAsync, message, CancellationToken.None);
                else
                    await context.Forward(new BasicQnAMakerDialog(), AfterAnswerAsync, message, CancellationToken.None);
            }
            else
            {
                await context.PostAsync("Please set QnAKnowledgebaseId, QnAAuthKey and QnAEndpointHostName (if applicable) in App Settings. Learn how to get them at https://aka.ms/qnaabssetup.");
            }

        }

        private async Task AfterAnswerAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
        {
            // wait for the next user message
            context.Wait(MessageReceivedAsync);
        }

        public static string GetSetting(string key)
        {
            var value = ConfigurationManager.AppSettings[key];
            if (String.IsNullOrEmpty(value) && key == "QnAAuthKey")
            {
                value = ConfigurationManager.AppSettings["QnASubscriptionKey"]; // QnASubscriptionKey for backward compatibility with QnAMaker (Preview)
            }
            return value;
        }
    }

    // Dialog for QnAMaker Preview service
    [Serializable]
    public class BasicQnAMakerPreviewDialog : QnAMakerDialog
    {
        // Go to https://qnamaker.ai and feed data, train & publish your QnA Knowledgebase.
        // Parameters to QnAMakerService are:
        // Required: subscriptionKey, knowledgebaseId, 
        // Optional: defaultMessage, scoreThreshold[Range 0.0 – 1.0]
        public BasicQnAMakerPreviewDialog() : base(new QnAMakerService(new QnAMakerAttribute(RootDialog.GetSetting("QnAAuthKey"), ConfigurationManager.AppSettings["QnAKnowledgebaseId"], "No good match in FAQ.", 0.5)))
        { }
    }

    // Dialog for QnAMaker GA service
    [Serializable]
    public class BasicQnAMakerDialog : QnAMakerDialog
    {
        // Go to https://qnamaker.ai and feed data, train & publish your QnA Knowledgebase.
        // Parameters to QnAMakerService are:
        // Required: qnaAuthKey, knowledgebaseId, endpointHostName
        // Optional: defaultMessage, scoreThreshold[Range 0.0 – 1.0]
        public BasicQnAMakerDialog() : base(new QnAMakerService(new QnAMakerAttribute(RootDialog.GetSetting("QnAAuthKey"), ConfigurationManager.AppSettings["QnAKnowledgebaseId"], "Desculpe, não entendi muito bem sua pergunta... Poderia refazê-la de forma diferente? Caso já tenha tentado, talvez eu ainda não saiba como responder sua dúvida.", 0.3, 1, ConfigurationManager.AppSettings["QnAEndpointHostName"])))
        { }

    }
}

Answer 1

正如错误提到的那样，问题是AzureWebJobsStorage文件中找不到web.config。要解决您的问题，请在azure门户中导航到您的bot，然后单击左侧刀片上的应用程序设置。在那里，您会找到一个带有密钥AzureWebJobsStorage的设置。复制设置的值并将其粘贴到web.config文件中：

<configuration>
  <appSettings>
    <!-- update these with your BotId, Microsoft App Id and your Microsoft App Password-->
    <add key="BotId" value="YourBotId" />
   <add key="MicrosoftAppId" value="" />
   <add key="MicrosoftAppPassword" value="" />
    <add key="QnaSubscriptionKey" value="" />
    <add key="QnaKnowledgebaseId" value="" />
    <add key="AzureWebJobsStorage" value="copied value from azure portal" />
  </appSettings>

<强>更新

要回答评论中发布的进一步问题，

我被重定向到浏览器中的空白页面，地址为localhost：3984，文本中可以读取QnABot模板，然后是一些链接

表示僵尸程序现在运行正常，实际上是预期的行为。要在本地测试机器人，您需要使用Bot Emulator。按照链接中提到的步骤测试机器人。您还可以浏览bot framework链接，因为这样可以让您更清楚地了解Microsoft Bot Framework。

更新2：

根据您发布的截图，我认为您已更改了Global.asax文件。注册TableBotDataStore的代码应该是

var store = new TableBotDataStore(ConfigurationManager.AppSettings["AzureWebJobsStorage"]);

根本没有变化。

其次如费韩所说：

Utils.GetAppSetting(string key)方法适用于在Azure上运行的漫游器，如果您想在本地访问bot应用程序并从web.config文件访问设置，则可以使用ConfigurationManager.AppSettings[“your_key”]替换{ {1}}在QnAMakerDialog中。

第二个屏幕截图显示您的代码中仍有Utils.GetAppSetting(“your_key”)。将其替换为：

Utils.GetAppSetting(“your_key”)

以及其他地方等等。

Answer 2

错误System.ArgumentNullException：'值不能为空。

正如Ashwin Kumar所提到的，您应该在web.config文件中为您的机器人应用程序包含"AzureWebJobsStorage"的名称/值对。

System.FormatException：'设置必须是“name = value”形式。

请检查您是否获得值ConfigurationManager.AppSettings["AzureWebJobsStorage"]并传递有效的连接字符串以启动TableBotDataStore，而不仅仅是传递密钥"AzureWebJobsStorage"。

我需要在Bot Framework Emulator中进行一些更改和测试（使用V4），然后在本地下载并运行我的机器人

Utils.GetAppSetting(string key) method适用于在Azure上运行的漫游器，如果您想在本地访问bot应用程序并从web.config文件访问设置，则可以使用 ConfigurationManager.AppSettings [“your_key”] 在QnAMakerDialog中替换 Utils.GetAppSetting（“your_key”） ，如下所示：

//var qnaKBId = Utils.GetAppSetting("QnAKnowledgebaseId");
var qnaKBId = ConfigurationManager.AppSettings["QnAKnowledgebaseId"];

Azure Bot Framework Emulator Error - System.ArgumentNullException: Value cannot be null

2 个答案: