在进入bot框架之前确认拼写检查器的输出

Question

我想完成这个：

我在中间件中有一个拼写检查器。如果用户的输入文本与更正的文本不匹配，我想在继续之前与用户确认更正的文本。我尝试了几种方法，但未能实现这一目标。这是我写的代码：

app.js：

var builder = require('botbuilder');
var restify = require('restify');
var spellService = require('./spell-service')

// Setup Restify Server
var server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, function () {
    console.log('%s listening to %s', server.name, server.url);
});
// Create connector and listen for messages
var connector = new builder.ChatConnector({
    appId: process.env.MICROSOFT_APP_ID,
    appPassword: process.env.MICROSOFT_APP_PASSWORD
});
server.post('/api/messages', connector.listen());

var bot = new builder.UniversalBot(connector, function (session) {
    session.beginDialog('search');
});

bot.dialog('search', [
  function (session, args, next) {
    builder.Prompts.text(session, 'Type the name of a company you would like to search');
  }
]);

//=========================================================
// Spell checker
//=========================================================

const dontCorrectIdentifier = "dontCorrect";

bot.use({
  botbuilder: function (session, next) {
    if (session.message.text.startsWith(dontCorrectIdentifier)) {
      session.message.text = session.message.text.replace(dontCorrectIdentifier, "");
      next();
    } else {
      spellService
          .getCorrectedText(session.message.text)
          .then(function (text) {
            if (session.message.text !== text) {
              var msg = new builder.Message(session)
                  .text("Did you mean \"" + text + "\"?")
                  .suggestedActions(builder.SuggestedActions.create(session, [
                        builder.CardAction.postBack(session, dontCorrectIdentifier + text, "Yes"),
                        builder.CardAction.postBack(session, dontCorrectIdentifier + session.message.text, "No")
                      ]
                  ));

              builder.Prompts.text(session, msg);
            }
            next();
          })
          .catch(function (error) {
            console.error(error);
            next();
          });
    }
  }
});

拼写service.js

// from https://dev.cognitive.microsoft.com/docs/services/56e73033cf5ff80c2008c679/operations/56e73036cf5ff81048ee6727
var request = require('request');

var SPELL_CHECK_API_URL = 'https://api.cognitive.microsoft.com/bing/v7.0/SpellCheck?mkt=en-US&mode=proof',
    SPELL_CHECK_API_KEY = 'MY KEY';

/**
 * Gets the correct spelling for the given text
 * @param {string} text The text to be corrected
 * @returns {Promise} Promise with corrected text if succeeded, error otherwise.
 */
exports.getCorrectedText = function (text) {
  return new Promise(function (resolve, reject) {
    if (text) {
      var requestData = {
        url: SPELL_CHECK_API_URL,
        headers: {
          "Ocp-Apim-Subscription-Key": SPELL_CHECK_API_KEY
        },
        form: {
          text: text
        },
        json: true
      };

      request.post(requestData, function (error, response, body) {
        if (error) {
          reject(error);
        } else if (response.statusCode != 200) {
          reject(body);
        } else {
          var previousOffset = 0;
          var result = '';

          for (var i = 0; i < body.flaggedTokens.length; i++) {
            var element = body.flaggedTokens[i];

            // append the text from the previous offset to the current misspelled word offset
            result += text.substring(previousOffset, element.offset);

            // append the first suggested correction instead of the misspelled word
            result += element.suggestions[0].suggestion;

            // Increment the offset by the length of the misspelled word
            previousOffset = element.offset + element.token.length;
          }

          // Append the text after the last misspelled word.
          if (previousOffset < text.length) {
            result += text.substring(previousOffset);
          }

          resolve(result);
        }

      });
    } else {
      resolve(text);
    }
  })
};

根据Gary的建议，这是正确的方法：

bot.use({
  botbuilder: function (session, next) {
    if (session.message.text.startsWith(dontCorrectIdentifier)) {
      session.message.text = session.message.text.replace(dontCorrectIdentifier, "");
      next();
    } else {
      spellService
          .getCorrectedText(session.message.text)
          .then(function (text) {
            if (session.message.text !== text) {
              var msg = new builder.Message(session)
                  .text("Did you mean \"" + text + "\"?")
                  .suggestedActions(builder.SuggestedActions.create(session, [
                        builder.CardAction.postBack(session, dontCorrectIdentifier + text, "Yes"),
                        builder.CardAction.postBack(session, dontCorrectIdentifier + session.message.text, "No")
                      ]
                  ));

              session.send(msg);
            } else {
              next();
            }
          })
          .catch(function (error) {
            console.error(error);
            next();
          });
    }
  }
});

Answer 1

修改builder中间的逻辑流程，这对我来说很好：

bot.use({
    botbuilder: (session, next) => {
        if (session.message.text.startsWith(dontCorrectIdentifier)) {
            session.message.text = session.message.text.replace(dontCorrectIdentifier, "");
            next();
        } else {
            var text = session.message.text;
            var msg = new builder.Message(session)
                .text("Did you mean \"" + text + "\"?")
                .suggestedActions(builder.SuggestedActions.create(session, [
                    builder.CardAction.postBack(session, dontCorrectIdentifier + text, "Yes"),
                    builder.CardAction.postBack(session, dontCorrectIdentifier + session.message.text, "No")
                ]));
            session.send(msg);
        }
    },
})

使用session.send(msg);替换builder.Prompts.text(session, msg)。并在else条件下删除next()。

Answer 2

您需要在URL中附加文本参数。我试着卷曲：

curl -v -X GET https://api.cognitive.microsoft.com/bing/v7.0/SpellCheck?mkt=en-US&mode=proof&text=hollo%2Cwrld

另一件事是.js文件中拼写和服务之间的连字符。您可以尝试先检查json响应，看看是否正在进行校正。