System.Collections.Generic.KeyNotFoundException与Microsoft Bot Framework [英] System.Collections.Generic.KeyNotFoundException with Microsoft Bot Framework

问题描述

我正在使用Microsoft Bot Framework来使用LuisDialog创建一个非常简单的机器人。但是我不断收到一个System.Collections.Generic.KeyNotFoundException。

以下是我的控制器：

  public async Task< HttpResponseMessage> Post（[FromBody] Activity activity）
 {
 if（activity.Type == ActivityTypes.Message）
 {
 await Conversation.SendAsync（activity，（）=> new QuotesDialog（））; 
} 
 else 
 {
 HandleSystemMessage（activity）; 
} 
 var response = Request.CreateResponse（HttpStatusCode.OK）; 
返回响应; 
} 
  

这是我的对话框：

  [Serializable] 
 [LuisModel（MyModelIdGoesHere，MySubscriptionKeyGoesHere）] 
 public class QuotesDialog：LuisDialog< object> 
 {
 [LuisIntent（CheckQuote）] 
 public async任务CheckQuote（IDialogContext上下文，LuisResult结果）
 {
 await context.PostAsync（Hello you！ ）; 
 context.Wait（MessageReceived）; 
 
 
 [LuisIntent（None）] 
 public async任务无（IDialogContext上下文，LuisResult结果）
 {
 await context.PostAsync 我很抱歉，我没有明白。）; 
 context.Wait（MessageReceived）; 
 
 
 
 
 $ b如果我使用旧版本的Bot Framework，像3.0.0，我得到以下错误：
 500 InternalServerError 
 {
消息：发生错误。然而，如果我更新到最新的稳定版本（3.2.1），那么我会得到类型为System.Collections.Generic的以下错误：
 
 
 
 KeyNotFoundException：
 
 
异常：System.Collections.Generic.KeyNotFoundException：给定的
键在字典中不存在。 
 System.Collections.Generic.Dictionary2.get_Item（TKey key）at 
 Microsoft.Bot.Builder.Dialogs.LuisDialog 
 
完整的堆栈跟踪如下： 
 
 
  http ：//pastebin.com/uLJF5fcV  
 
 
 
我试着在另一个解决方案上创建一个新项目，但是我得到了同样的错误。我尝试通过nuget安装不同版本的Bot框架，但就像我之前说过的那样，这种或那种方式仍然会出现错误。到目前为止，我对Bot Framework的经验还很少，所以我真的不知道还有什么可以尝试的。
    

您再次尝试在None方法的基础上添加以下内容？

  [LuisIntent（）] 
 
 code> 

您看到的错误通常是在LuisDialog无法根据收到的消息解析执行的方法（意图）时发生的。



我怀疑这个问题正在被提出这里，当LuisDialog寻找空的意图。

  handler = this.handlerByIntent [string.Empty]; 
  




I am using the Microsoft Bot Framework to create a really simple bot using a LuisDialog. However I keep getting a System.Collections.Generic.KeyNotFoundException.

Here's my controller:

public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
{
    if (activity.Type == ActivityTypes.Message)
    {
        await Conversation.SendAsync(activity, () => new QuotesDialog());
    }
    else
    {
        HandleSystemMessage(activity);
    }
    var response = Request.CreateResponse(HttpStatusCode.OK);
    return response;
}

Here's my dialog:

[Serializable]
[LuisModel("MyModelIdGoesHere", "MySubscriptionKeyGoesHere")]
public class QuotesDialog : LuisDialog<object>
{
    [LuisIntent("CheckQuote")]
    public async Task CheckQuote(IDialogContext context, LuisResult result)
    {
        await context.PostAsync("Hello you!");
        context.Wait(MessageReceived);
    }

    [LuisIntent("None")]
    public async Task None(IDialogContext context, LuisResult result)
    {
        await context.PostAsync("I'm sorry. I didn't get that.");
        context.Wait(MessageReceived);
    }
}

If I use an older version of the Bot Framework, like 3.0.0, I get the following error: 500 InternalServerError { "message": "An error has occurred." }

However if I update to the latest stable version (3.2.1) then I get the following error of the type "System.Collections.Generic.KeyNotFoundException":

"Exception: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.Collections.Generic.Dictionary2.get_Item(TKey key) at Microsoft.Bot.Builder.Dialogs.LuisDialog "

The full stack trace is here:

http://pastebin.com/uLJF5fcV

I tried create a new project on another solution, but I get the same error. I tried install different versions of the Bot Framework via nuget but like I said previously, one way or another I still get an error. I have really little experience with the Bot Framework so far, so I don't really know what else to try.

解决方案

Can you try again adding the following on top of the None method?

[LuisIntent("")]

The error that you are seeing is usually happening when the LuisDialog cannot resolve the method (intent) to execute based on the message received.

I suspect the issue is being raised here, when the LuisDialog looks for the empty intent.

handler = this.handlerByIntent[string.Empty];

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