Question

我正在使用C＃中的Microsoft Bot框架开发一个机器人。我正在尝试向用户发送欢迎消息作为介绍，然后再发送任何内容。

经过研究，我在某种程度上使用HandleSystemMessage函数并在ConversationUpdate的情况下发送消息，如下所示：

if (activity.Type == ActivityTypes.ConversationUpdate) 
{
    IConversationUpdateActivity update = activity;
    if (update.MembersAdded.Any())
    {
        foreach (var newMember in update.MembersAdded)
        {
            if (newMember.Id != activity.Recipient.Id)
            {
                ConnectorClient connector = new ConnectorClient(new Uri(activity.ServiceUrl));

                Activity reply = activity.CreateReply();
                reply.Text("Hello, how can I help you?");
                await connector.Conversations.ReplyToActivityAsync((Activity)bubble);
            }
        }
    }
}

此方法面临的问题：

在仿真器中，当您按下上方的刷新按钮时，或者如果用户闲置了一段时间则开始输入时，将出现欢迎消息。这是我正在寻找的行为，它正在按预期方式工作。
现在，当使用Bot Framework Web Chat组件时，该消息将在用户发起对话时发送，即，当用户键入内容并将其发送给机器人时。这不是我想要的，而是希望在加载Web聊天控件后立即从bot中显示该消息，因为该消息将包含有关如何使用该bot的说明。

我认为可以使用另一种ActivityType或某种Java语言“ hacky”方式解决我的问题，但直到现在我都找不到解决方案。

Answer 1

对于网络聊天组件，您可以使用反向通道功能向机器人发送隐藏消息，以启动问候语。

Heere是网聊方面的实现示例：

<!DOCTYPE html>
<html>
<head>
    <link href="https://cdn.botframework.com/botframework-webchat/latest/botchat.css" rel="stylesheet" />
</head>
<body>
    <div id="bot" />
    <script src="https://cdn.botframework.com/botframework-webchat/latest/botchat.js"></script>
    <script>
        // Get parameters from query
        const params = BotChat.queryParams(location.search);
        // Language definition
        var chatLocale = params['locale'] || window.navigator.language;

        // Connection settings
        const botConnectionSettings = new BotChat.DirectLine({
            domain: params['domain'],
            secret: 'YOUR_SECRET',
            webSocket: params['webSocket'] && params['webSocket'] === 'true'
        });

        // Webchat init
        BotChat.App({
            botConnection: botConnectionSettings,
            user: { id: 'userid' },
            bot: { id: 'botid' },
            locale: chatLocale,
            resize: 'detect'
        }, document.getElementById('bot'));

        // Send hidden message to do what you want
        botConnectionSettings.postActivity({
            type: 'event',
            from: { id: 'userid' },
            locale: chatLocale,
            name: 'myCustomEvent',
            value: 'test'
        }).subscribe(function (id) { console.log('event sent'); });
    </script>
</body>
</html>

在机器人方面，您将在Message Controlelr上收到此事件：

public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
{
    // DEMO PURPOSE: echo all incoming activities
    Activity reply = activity.CreateReply(Newtonsoft.Json.JsonConvert.SerializeObject(activity, Newtonsoft.Json.Formatting.None));

    var connector = new ConnectorClient(new Uri(activity.ServiceUrl));
    connector.Conversations.SendToConversation(reply);

    // Process each activity
    if (activity.Type == ActivityTypes.Message)
    {
        await Conversation.SendAsync(activity, () => new Dialogs.RootDialog());
    }
    // Webchat: getting an "event" activity for our js code
    else if (activity.Type == ActivityTypes.Event && activity.ChannelId == "webchat")
    {
        var receivedEvent = activity.AsEventActivity();

        if ("myCustomEvent".Equals(receivedEvent.Name, StringComparison.InvariantCultureIgnoreCase))
        {
            // DO YOUR GREETINGS FROM HERE
        }
    }
    // Sample for Skype: in ContactRelationUpdate event
    else if (activity.Type == ActivityTypes.ContactRelationUpdate && activity.ChannelId == "skype")
    {
        // DO YOUR GREETINGS FROM HERE
    }
    // Sample for emulator, to debug locales
    else if (activity.Type == ActivityTypes.ConversationUpdate && activity.ChannelId == "emulator")
    {
        foreach (var userAdded in activity.MembersAdded)
        {
            if (userAdded.Id == activity.From.Id)
            {
                // DO YOUR GREETINGS FROM HERE
            }
        }
    }

    var response = Request.CreateResponse(HttpStatusCode.OK);
    return response;
}

我使用此功能进行了有效的演示，以发送用户语言环境，它是Github上的here

Answer 2

这是网络聊天中的一个已知问题。

使用WebChat或Directline，在创建对话时发送bot的ConversationUpdate，并在用户首次发送消息时发送该用户的ConversationUpdate。 [1]

一种解决方法是从网上聊天向机器人发送消息。

<!DOCTYPE html>

<script src="https://cdn.botframework.com/botframework-webchat/latest/botchat.js"></script>
<script>

    var user = {
        id: 'user-id',
        name: 'user name'
    };

    var botConnection = new BotChat.DirectLine({
        token: '[DirectLineSecretHere]',
        user: user
    });

    BotChat.App({
        user: user,
        botConnection: botConnection,
        bot: { id: 'bot-id', name: 'bot name' },
        resize: 'detect'
    }, document.getElementById("bot"));

    botConnection
        .postActivity({
            from: user,
            name: 'requestWelcomeDialog',
            type: 'event',
            value: ''
        })
        .subscribe(function (id) {
            console.log('"trigger requestWelcomeDialog" sent');
        });
</script>

[2]

我没有更改机器人代码中的任何内容来实现这一目标。

加载Webchat控件后立即从机器人发送问候语/欢迎语

2 个答案: