Microsoft Bot在WebChat中显示不必要的重复消息吗?

当用户首次访问我的聊天时，会收到欢迎消息，并立即要求他们提供名字.一旦用户输入了他们的名字，欢迎消息就会出现，并再次显示输入有关其名字的文本提示.只有在他们第二次输入名字后，机器人才继续进行有关其姓氏的下一个问题.

When a user visits my chat for the first time they are greeted with welcome message and immediately asked to provide their first name. As soon as the user inputs their first name the welcome message is and text prompt for their first name is displayed once again. Only after they input their first name for the second time, the bot moves on to the next question about their last name.

另外，当用户最终在第一次聊天中输入他们的名字和姓氏，并且他们再次返回相同的聊天时，欢迎消息&仅当用户提供一些输入漫游器发送回欢迎消息时，才会显示名字提示.

Additionally when user finally enters their first and last name in first chat and they come back again to the same chat, welcome message & first name prompt is displayed, only when user provides some input bot sends welcome back message.

这是重现此问题所需的最少代码. 让restify = require('restify'); 让builder = require('botbuilder');

This is minimal code required to reproduce this problem. let restify = require('restify'); let builder = require('botbuilder');

// Setup Restify Server
let server = restify.createServer();

let connector = new builder.ChatConnector({
    appId: process.env.MICROSOFT_APP_ID,
    appPassword: process.env.MICROSOFT_APP_PASSWORD
});

server.post('/api/messages', connector.listen());

let bot = new builder.UniversalBot(connector);

// Define default Dialog
bot.dialog('/', [
  function (session) {
    if (!session.userData.firstName) {
      // firstName used as a flag to assess whether the user is coming back
      // or new user - we can use it because the very first dialog is asking them
      // for their first name.
      session.send("Welcome!");
    } else {
      session.send("Welcome back %s!", session.userData.firstName);
    }

    session.beginDialog('mainConversationFlow');
  }
])

bot.dialog('mainConversationFlow', [
    function(session, args, next) {
      if (!session.userData.firstName)
        session.beginDialog('getFirstName');
      else 
        next();
    },
    function(session, args, next) {
      if(!session.userData.lastName) 
        session.beginDialog('getLastName');
      else
        next();
    }, 
    function(session, args, next) {
      session.endConversation('The End');
    }
])

bot.dialog('getFirstName', [
  function(session, args) {
    let msg = "What's your first name?";

    builder.Prompts.text(session, msg);
  },
  function(session, results) {
    session.userData.firstName = results.response.trim();
    session.endDialog();
  }
])

bot.dialog('getLastName', [
  function(session, args) {
    let msg = builder.Message.composePrompt(session,
      ["Hi %s, what's your last name?"], session.userData.firstName);

    builder.Prompts.text(session, msg);
  },
  function(session, results) {
    session.userData.lastName = results.response.trim();

    session.endDialog();
  }
])

bot.on('conversationUpdate', function (message) {
    if (message.membersAdded) {
        message.membersAdded.forEach(function (identity) {
            if (identity.id === message.address.bot.id) {
                bot.beginDialog(message.address, '/');
            }
        });
    }
})

server.listen(process.env.port || process.env.PORT || 3978, function () {
   console.log('%s listening to %s', server.name, server.url); 
})

在首次运行该应用程序时，应向用户显示欢迎消息，并询问其名字.一旦他们输入了名字，该漫游器就应立即转到有关其姓氏的下一个问题，并且在用户回答该漫游器应结束对话之后.

User on the first run of the app should be shown welcome message and asked for their first name. As soon as they input their first name, the bot should move right away to the next question about their last name and after the user answers that bot should end conversation.

当用户输入他们的第一个&姓氏，然后他们回来，该漫游器应该只显示欢迎回来消息并结束对话.

When user entered their first & last names and they come back, the bot should only display welcome back message and end conversation.

这是我使用BotFramework-WebChat的客户代码的片段:

This is snippet of my client code using BotFramework-WebChat:

let directLineSecret = 'mysecret';
let directLineSpecUrl = 'https://docs.botframework.com/en-us/restapi/directline3/swagger.json';

BotChat.App({
  directLine: {secret: directLineSecret},
  user: { id: localStorage.getItem('email')},
  bot: { id: 'testbot' },
  resize: 'detect'
}, this.botChatContainer.nativeElement);

let directLineClient = rp(directLineSpecUrl)
  .then(function(spec) {
    return new Swagger({
      spec: JSON.parse(spec.trim()),
      usePromise: true
    });
  })
  .then(function(client) {
    return rp({
      url: 'https://directline.botframework.com/v3/directline/tokens/generate',
      method: 'POST',
      headers: {
        'Authorization': 'Bearer ' + directLineSecret
      },
      json: true
    }).then(function(response) {
      let token = response.token;
      client.clientAuthorizations.add('AuthorizationBotConnector', new Swagger.ApiKeyAuthorization('Authorization', 'Bearer ' + token, 'header'));
      return client;
    });
  })
  .catch(function(err) {
    console.error('Error initializing DirectLine client', err);
    throw err;
  });

这些屏幕截图是在dev.botframework.com测试窗口中拍摄的.但是，相同的行为适用于使用WebChat的Web应用程序.

These screenshots were taken in dev.botframework.com test window. However the same behaviour applies in my web app which uses WebChat.

您能帮我解决这个问题吗?

Can you please help me to solve this issue?

更新 日志:

2018-01-13 19:29:46.876 INFO - Container logs 2018-01-13T19:29:45.006255595Z
UserConversation message: , user: undefined 2018-01-13T19:29:45.006543896Z {"typ
e":"conversationUpdate","timestamp":"2018-01-13T19:29:44.4543348Z","membersAdded
":[{"id":"mybot@j4OUxKYkEpQ","name":"MyBot"}],"text":"","attachments":[],"entiti
es":[],"address":{"id":"C27bFaQ1Ohr","channelId":"webchat","user":{"id":"8f8399d
115774c86b83634bf7086f354"},"conversation":{"id":"8f8399d115774c86b83634bf7086f3
54"},"bot":{"id":"mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://webch
at.botframework.com/"},"source":"webchat","agent":"botbuilder","user":{"id":"8f8
399d115774c86b83634bf7086f354"}} 
2018-01-13T19:29:45.006562196Z ----------------------------  
2018-01-13T19:29:45.937402126Z Incoming message:
2018-01-13T19:29:45.937559026Z ----------------------------
2018-01-13T19:29:46.291227879Z Outgoing message: Welcome!
2018-01-13T19:29:46.291465679Z {"type":"message","agent":"botbuilder","source":"
webchat","address":{"id":"C27bFaQ1Ohr","channelId":"webchat","user":{"id":"8f839
9d115774c86b83634bf7086f354"},"conversation":{"id":"8f8399d115774c86b83634bf7086
f354"},"bot":{"id":"mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://web
chat.botframework.com/"},"text":"Welcome!"} 
2018-01-13T19:29:46.291479179Z ----------------------------  
2018-01-13T19:29:46.291708779Z Outgoing message:
What's your first name? 2018-01-13T19:29:46.291740980Z {"text":"What's your
first name?","inputHint":"expectingInput","type":"message","address":{"id":"C27b
FaQ1Ohr","channelId":"webchat","user":{"id":"8f8399d115774c86b83634bf7086f354"},
"conversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OU
xKYkEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"}}
2018-01-13T19:29:46.291759880Z  ----------------------------  
2018-01-13 19:29:56.876 INFO - Container logs 2018-01-13T19:29:53.471348251Z
UserConversation message: , user: undefined 2018-01-13T19:29:53.471657052Z {"typ
e":"conversationUpdate","timestamp":"2018-01-13T19:29:53.3233269Z","membersAdded
":[{"id":"AvfenKwcS1o","name":"You"}],"text":"","attachments":[],"entities":[],"
address":{"id":"DbpPwxf2m7T","channelId":"webchat","user":{"id":"8f8399d115774c8
6b83634bf7086f354"},"conversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bo
t":{"id":"mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botfr
amework.com/"},"source":"webchat","agent":"botbuilder","user":{"id":"8f8399d1157
74c86b83634bf7086f354"}} 
2018-01-13T19:29:53.471672552Z ----------------------------  
2018-01-13T19:29:53.515781796Z UserConversation
message: John, user: You 2018-01-13T19:29:53.515792596Z {"type":"message","times
tamp":"2018-01-13T19:29:53.1827153Z","textFormat":"plain","text":"John","entitie
s":[{"type":"ClientCapabilities","requiresBotState":true,"supportsTts":true,"sup
portsListening":true}],"textLocale":"en","sourceEvent":{"clientActivityId":"1515
871784086.6213104132628995.0"},"attachments":[],"address":{"id":"8f8399d115774c8
6b83634bf7086f354|0000002","channelId":"webchat","user":{"id":"AvfenKwcS1o","nam
e":"You"},"conversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"
mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botframework.co
m/"},"source":"webchat","agent":"botbuilder","user":{"id":"AvfenKwcS1o","name":"
You"}} 
2018-01-13T19:29:53.515801796Z ----------------------------
2018-01-13T19:29:53.545361425Z Incoming message: John
2018-01-13T19:29:53.545373525Z ----------------------------
2018-01-13T19:29:53.802571982Z Outgoing message: Welcome!
2018-01-13T19:29:53.802593382Z {"type":"message","agent":"botbuilder","source":"
webchat","textLocale":"en","address":{"id":"8f8399d115774c86b83634bf7086f354|000
0002","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"conversati
on":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKYkEpQ","n
ame":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"text":"Welcome!
"} 
2018-01-13T19:29:53.802600382Z  ----------------------------
2018-01-13T19:29:53.802602782Z Outgoing message: What's your first name?
2018-01-13T19:29:53.802604982Z {"text":"What's your first name?","inputHint":"ex
pectingInput","type":"message","address":{"id":"8f8399d115774c86b83634bf7086f354
|0000002","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"conver
sation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKYkEpQ
","name":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"textLocale"
:"en"} 
2018-01-13T19:29:53.802610082Z  ----------------------------  
2018-01-13 19:30:01.878 INFO - Container logs 2018-01-13T19:29:57.806548081Z
UserConversation message: John, user: You 2018-01-13T19:29:57.809735285Z {"type"
:"message","timestamp":"2018-01-13T19:29:57.6990081Z","textFormat":"plain","text
":"John","textLocale":"en","sourceEvent":{"clientActivityId":"1515871784086.6213
104132628995.2"},"attachments":[],"entities":[],"address":{"id":"8f8399d115774c8
6b83634bf7086f354|0000005","channelId":"webchat","user":{"id":"AvfenKwcS1o","nam
e":"You"},"conversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"
mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botframework.co
m/"},"source":"webchat","agent":"botbuilder","user":{"id":"AvfenKwcS1o","name":"
You"}} 
2018-01-13T19:29:57.809755085Z ----------------------------
2018-01-13T19:29:57.828015903Z Incoming message: John
2018-01-13T19:29:57.828028303Z ----------------------------
2018-01-13T19:29:58.122706697Z Outgoing message: Got response as: John
2018-01-13T19:29:58.122972998Z {"type":"message","agent":"botbuilder","source":"
webchat","textLocale":"en","address":{"id":"8f8399d115774c86b83634bf7086f354|000
0005","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"conversati
on":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKYkEpQ","n
ame":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"text":"Got
response as: John"} 
2018-01-13T19:29:58.122997998Z ----------------------------
2018-01-13T19:29:58.123366398Z Outgoing message: Hello John! What is your last
name? 2018-01-13T19:29:58.123377798Z {"text":"Hello John! What is your last name
?","inputHint":"expectingInput","type":"message","address":{"id":"8f8399d115774c
86b83634bf7086f354|0000005","channelId":"webchat","user":{"id":"AvfenKwcS1o","na
me":"You"},"conversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":
"mybot@j4OUxKYkEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botframework.c
om/"},"textLocale":"en"} 
2018-01-13T19:29:58.123395698Z ----------------------------  
2018-01-13T19:30:00.551811524Z UserConversation
message: Doe, user: You 2018-01-13T19:30:00.552098924Z {"type":"message","timest
amp":"2018-01-13T19:30:00.4252782Z","textFormat":"plain","text":"Doe","textLocal
e":"en","sourceEvent":{"clientActivityId":"1515871784086.6213104132628995.4"},"a
ttachments":[],"entities":[],"address":{"id":"8f8399d115774c86b83634bf7086f354|0
000008","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"conversa
tion":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKYkEpQ",
"name":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"source":"webc
hat","agent":"botbuilder","user":{"id":"AvfenKwcS1o","name":"You"}}
2018-01-13T19:30:00.552114924Z ----------------------------
2018-01-13T19:30:00.590356662Z Incoming message: Doe
2018-01-13T19:30:00.590371762Z ----------------------------
2018-01-13T19:30:00.857187129Z Outgoing message: Got last name as: Doe
2018-01-13T19:30:00.857206229Z {"type":"message","agent":"botbuilder","source":"
webchat","textLocale":"en","address":{"id":"8f8399d115774c86b83634bf7086f354|000
0008","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"conversati
on":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKYkEpQ","n
ame":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"text":"Got last
name as: Doe"} 
2018-01-13T19:30:00.857220329Z  ----------------------------
2018-01-13T19:30:00.857222929Z Outgoing message: End of "mainConversationFlow"
dialog. 2018-01-13T19:30:00.857225229Z {"type":"message","agent":"botbuilder","s
ource":"webchat","textLocale":"en","address":{"id":"8f8399d115774c86b83634bf7086
f354|0000008","channelId":"webchat","user":{"id":"AvfenKwcS1o","name":"You"},"co
nversation":{"id":"8f8399d115774c86b83634bf7086f354"},"bot":{"id":"mybot@j4OUxKY
kEpQ","name":"MyBot"},"serviceUrl":"https://webchat.botframework.com/"},"text":"
End of \"mainConversationFlow\" dialog."} 
2018-01-13T19:30:00.857230729Z ----------------------------

我用于日志的代码:

const logUserConversation = (event) => {
    console.log('UserConversation message: ' + event.text + ', user: ' + event.address.user.name);
    console.log(JSON.stringify(event));
    console.log('----------------------------');
};

const logIncomingMessage = function (session) {
    console.log('Incoming message: ' + session.message.text);
    console.log(JSON.stringify(session.user));
    console.log('----------------------------');
};

const logOutgoingMessage = function (event) {
    console.log('Outgoing message: ' + event.text);
    console.log(JSON.stringify(event));
    console.log('----------------------------');
};

bot.use({
    receive: function (event, next) {
        logUserConversation(event);
        next();
    },
    botbuilder: function (session, next) {
        logIncomingMessage(session);
        next();
    },
    send: function (event, next) {
        logOutgoingMessage(event);
        next();
    }
})