在访问webhook URL时收到错误"操作错误:没有匹配的意图处理程序:null"

Question

我试图从对话框流中调用webhook,而不是从webhook获得响应,我从响应部分得到的响应,我已将其置于意图中.我还为每个意图启用了webhook,并且还放置了webhook URL,该URL是从firebase CLI在履行URL部分生成的.我附上了firebase日志和JSON响应的屏幕截图,我们在对话框流程"show JSON"和index.js文件中也看到了.我被困了2周才解决它.

'use strict';

process.env.DEBUG = 'actions-on-google:*';
const { DialogflowApp } = require('actions-on-google');
const functions = require('firebase-functions');
let express = require('express');
let bodyParser = require('body-parser');

// Constants for Dialogflow Agent Actions
let app = express();
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json({type: 'application/json'}));

const BYE_RESPONSE = 'input.search';
const WELCOME = 'input.welcome';

exports.helloAssistant = functions.https.onRequest((req, res) => {
  console.log('Request headers: ' + JSON.stringify(req.headers));
  console.log('Request body: ' + JSON.stringify(req.body));
  const asst = new DialogflowApp({request: req, response: res});


  // Welcome
  function welcome(asst) {
    asst.ask('Want to search product or order history');
    asst.tell('hello Neeraj!');
  }

  // Leave conversation with SimpleResponse

  function byeResponse (asst) {
    app.post('/',function (req, res) {
      var myProduct = req.body.result.parameters["productParameter"];
      //let intent=asst.getIntent();
      var address ="https://ipadress/rest/v2/electronics/products/search";
      var address1="https://ipadress";
      switch(myProduct){
        case 'BYE_RESPONSE':
          req.post(address);
          break;

        case 'WELCOME':
          asst.tell('welcome!');
          break;

        default:
          req.post(address1);
          break;
      }

      asst.tell('We swear to serve the master of the Precious.');
    });
  }

  const actionMap = new Map();
  actionMap.set(WELCOME, welcome);

  actionMap.set(BYE_RESPONSE, byeResponse);
  actionMap.set(WELCOME, welcome);
  asst.handleRequest(actionMap);
});

.对话框流中的json响应

.firebase日志

Answer 1

我刚刚遇到了这个完全相同的错误,这是因为我忘记将我的意图名称放在Enter action name该Actions部分的字段中.

因此,它是null作为意图名称传递的,因为我没有指定一个.

我只是通过非常仔细地重新阅读https://developers.google.com/actions/dialogflow/first-app来解决这个问题.

Answer 2

对于每个代理都需要有一个unknownIntent 处理程序来处理意外情况，例如 null 等

'input.unknown': () => {
  // The default fallback intent has been matched, try to recover.
  // Define the response users will hear
  responseJson.speech = 'I\'m having trouble, can you try that again?';
  // Define the response users will see
  responseJson.displayText = 'I\'m having trouble :-/ can you try that again?';
  // Send the response to API.AI
  // response.json(responseJson);
  callback(null, responseJson);
}