如何在C#-CoreBot中构造QnA Maker实例类? [英] How to construct a QnA Maker Instance Class in C# - CoreBot?
问题描述
运行Core Bot C#示例后得到System.AggregateException.
I got a System.AggregateException after running my Core Bot C# sample.
在Startup.cs中，我将类添加如下:
In the Startup.cs I added the class as followes:
services.AddSingleton<ChitChatRecognizer>();
Recognizer类如下:
The Recognizer Class looks like:
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Bot.Builder;
using Microsoft.Bot.Builder.AI.QnA;
using Microsoft.Bot.Schema;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
namespace CoreBot
{
public class ChitChatRecognizer : ActivityHandler
{
private readonly IConfiguration _configuration;
private readonly ILogger<ChitChatRecognizer> _logger;
private readonly IHttpClientFactory _httpClientFactory;
public ChitChatRecognizer(IConfiguration configuration, ILogger<ChitChatRecognizer> logger, IHttpClientFactory httpClientFactory)
{
_configuration = configuration;
_logger = logger;
_httpClientFactory = httpClientFactory;
}
protected override async Task OnMessageActivityAsync(ITurnContext<IMessageActivity> turnContext, CancellationToken cancellationToken)
{
var httpClient = _httpClientFactory.CreateClient();
var qnaMaker = new QnAMaker(new QnAMakerEndpoint
{
KnowledgeBaseId = _configuration["QnAKnowledgebaseId"],
EndpointKey = _configuration["QnAEndpointKey"],
Host = _configuration["QnAEndpointHostName"]
},
null,
httpClient);
_logger.LogInformation("Calling QnA Maker");
var options = new QnAMakerOptions { Top = 1 };
// The actual call to the QnA Maker service.
var response = await qnaMaker.GetAnswersAsync(turnContext, options);
if (response != null && response.Length > 0)
{
await turnContext.SendActivityAsync(MessageFactory.Text(response[0].Answer), cancellationToken);
}
else
{
await turnContext.SendActivityAsync(MessageFactory.Text("No QnA Maker answers were found."), cancellationToken);
}
}
}
}
我什至没有使用Class，但是甚至没有错误也无法启动我的程序. 我该怎么办?
I'm not even using the Class yet but can't even start my program without the error. What should I do?
ErrorCode:
ErrorCode:
某些服务无法构建(验证服务描述符'ServiceType:CoreBot.ChitChatRecognizer寿命:Singleton实现类型:CoreBot.ChitChatRecognizer'时出错:无法解析类型为'System.Net.Http.IHttpClientFactory'的服务尝试激活"CoreBot.ChitChatRecognizer"时.)(验证服务描述符"ServiceType:Microsoft.BotBuilderSamples.Dialogs.MainDialog寿命:Singleton ImplementationType:Microsoft.BotBuilderSamples.Dialogs.MainDialog"时出错:无法为类型"System"解析服务.Net.Http.IHttpClientFactory"，同时尝试激活"CoreBot.ChitChatRecognizer".)(验证服务描述符"ServiceType:Microsoft.Bot.Builder.IBot生存期:临时实现类型:Microsoft.BotBuilderSamples.Bots.DialogAndWelcomeBot`1 [ Microsoft.BotBuilderSamples.Dialogs.MainDialog]":尝试激活时无法解析类型为"System.Net.Http.IHttpClientFactory"的服务'CoreBot.ChitChatRecognizer'.)"
"Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: CoreBot.ChitChatRecognizer Lifetime: Singleton ImplementationType: CoreBot.ChitChatRecognizer': Unable to resolve service for type 'System.Net.Http.IHttpClientFactory' while attempting to activate 'CoreBot.ChitChatRecognizer'.) (Error while validating the service descriptor 'ServiceType: Microsoft.BotBuilderSamples.Dialogs.MainDialog Lifetime: Singleton ImplementationType: Microsoft.BotBuilderSamples.Dialogs.MainDialog': Unable to resolve service for type 'System.Net.Http.IHttpClientFactory' while attempting to activate 'CoreBot.ChitChatRecognizer'.) (Error while validating the service descriptor 'ServiceType: Microsoft.Bot.Builder.IBot Lifetime: Transient ImplementationType: Microsoft.BotBuilderSamples.Bots.DialogAndWelcomeBot`1[Microsoft.BotBuilderSamples.Dialogs.MainDialog]': Unable to resolve service for type 'System.Net.Http.IHttpClientFactory' while attempting to activate 'CoreBot.ChitChatRecognizer'.)"
推荐答案
您的设置很奇怪...您正在制作自己的ChitChatRecognizer，它是一个机器人(它是从ActivityHandler派生的)，然后再进行DI我以为是对话还是其他漫游器?同样，您似乎也想将QnAMaker(QnA的识别器)视为单例，但是您可以在OnMessageActivityAsync中对其进行初始化-这意味着除非您的漫游器收到消息活动，否则它不会初始化，因此，如果您尝试初始化还有一些需要QnAMaker的东西，它在启动时将不存在.
Your setup is odd...you're making your ChitChatRecognizer, which is a bot (it derives from ActivityHandler), and then later DI into either a dialog or another bot, I imagine? Also it seems you want to treat QnAMaker (the recognizer for QnA) as a singleton, but you initialize it in OnMessageActivityAsync--meaning it won't initialize unless your bot receives a message activity, so if you're trying to initialize something else the requires a QnAMaker, it won't exist on startup.
无论如何，要回答如何将QnAMaker插入corebot的问题，如果您想将QnAMaker作为单例添加，则可以在启动时将其作为单例添加，然后在您从bot代码中调用它需要致电QnAMaker.
Anyways, to answer the question of how do you insert QnAMakerinto corebot, if you wanted to add QnAMaker as a singleton, you can add it as singleton in startup, then call it from your bot code when you need to make a call to QnAMaker.
将QnAMaker添加到Corebot示例
Add QnAMaker to Corebot Sample
在Startup.ConfigureServices中:
// Register QnAMaker recognizer
services.AddSingleton<MyQnaMaker>();
MyQnAMaker.cs
namespace Microsoft.BotBuilderSamples
{
public class MyQnaMaker
{
public MyQnaMaker(IConfiguration configuration)
{
ChitChatRecognizer = new QnAMaker(new QnAMakerEndpoint
{
KnowledgeBaseId = configuration["QnAKnowledgebaseId"],
EndpointKey = configuration["QnAEndpointKey"],
Host = configuration["QnAEndpointHostName"]
});
}
public QnAMaker ChitChatRecognizer { get; set; }
}
}
DialogAndWelcomeBot.cs构造函数
DI QnAMaker放入机器人
public DialogAndWelcomeBot(ConversationState conversationState, UserState userState, T dialog, ILogger<DialogBot<T>> logger, MyQnaMaker myQnAMaker)
: base(conversationState, userState, dialog, logger, myQnAMaker)
DialogBot.cs
public DialogBot(ConversationState conversationState, UserState userState, T dialog, ILogger<DialogBot<T>> logger, MyQnaMaker qnaMaker)
{
ConversationState = conversationState;
UserState = userState;
Dialog = dialog;
Logger = logger;
MyQnaMaker = qnaMaker;
}
...
protected override async Task OnMessageActivityAsync(ITurnContext<IMessageActivity> turnContext, CancellationToken cancellationToken)
{
Logger.LogInformation("Running dialog with Message Activity.");
if (turnContext.Activity.Text == "yo")
{
await CallQnAMaker(turnContext, cancellationToken);
} else {
// Run the Dialog with the new message Activity.
await Dialog.RunAsync(turnContext, ConversationState.CreateProperty<DialogState>("DialogState"), cancellationToken);
}
}
private async Task CallQnAMaker(ITurnContext<IMessageActivity> turnContext, CancellationToken cancellationToken)
{
var options = new QnAMakerOptions { Top = 1 };
// The actual call to the QnA Maker service.
var response = await MyQnaMaker.ChitChatRecognizer.GetAnswersAsync(turnContext, options);
if (response != null && response.Length > 0)
{
await turnContext.SendActivityAsync(MessageFactory.Text(response[0].Answer), cancellationToken);
}
else
{
await turnContext.SendActivityAsync(MessageFactory.Text("No QnA Maker answers were found."), cancellationToken);
}
}
根据需要向您的班级添加更多内容，这仅仅是最低要求.在上面的DialogBot.cs中，您可以看到我有触发QnAMaker的触发器，前提是用户输入"yo"作为消息，以进行测试.
Add more to your classes as needed, this is just the bare minimum. Above in DialogBot.cs, you can see that I have the trigger to call QnAMaker be if the user types in "yo" as a message, for testing purposes.
正在运行Corebot
替代
或者，您可以在bot的消息处理程序(例如DialogBot.OnMessageActivityAsync())中仅new新建一个QnAMaker，类似于示例
Alternatively you could just new up a new QnAMaker within the bot's message handler (like DialogBot.OnMessageActivityAsync()), similar to how is done in sample 11.qnamaker, and do away with the singleton.
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