actions-on-google api.ai不会在使用nodejs的POST请求中发送正文并表达

时间:2017-04-21 13:25:56

标签: node.js express dialogflow actions-on-google google-home

我正在尝试在我的计算机上使用api.ai从google上的actions上运行sillyNameMaker example。 我用express和ngrok隧道建立了一个nodejs服务器。当我尝试在api.ai上向我的代理发送请求时,我的服务器收到POST请求,但是正文似乎是空的。有没有我没有正确设置?

这是我的index.js文件:

'use strict';
var express = require('express')
var app = express()
const ApiAiAssistant = require('actions-on-google').ApiAiAssistant;

function sillyNameMaker(req, res) {
  const assistant = new ApiAiAssistant({request: req, response: res});

  // Create functions to handle requests here
  const WELCOME_INTENT = 'input.welcome';  // the action name from the API.AI intent
  const NUMBER_INTENT = 'input.number';  // the action name from the API.AI intent
  const NUMBER_ARGUMENT = 'input.mynum'; // the action name from the API.AI intent

  function welcomeIntent (assistant) {
    assistant.ask('Welcome to action snippets! Say a number.');
  }

  function numberIntent (assistant) {
    let number = assistant.getArgument(NUMBER_ARGUMENT);
    assistant.tell('You said ' + number);
  }

  let actionMap = new Map();
  actionMap.set(WELCOME_INTENT, welcomeIntent);
  actionMap.set(NUMBER_INTENT, numberIntent);
  assistant.handleRequest(actionMap);

  function responseHandler (assistant) {
    console.log("okok")
    // intent contains the name of the intent you defined in the Actions area of API.AI
    let intent = assistant.getIntent();
    switch (intent) {
      case WELCOME_INTENT:
        assistant.ask('Welcome! Say a number.');
        break;

      case NUMBER_INTENT:
        let number = assistant.getArgument(NUMBER_ARGUMENT);
        assistant.tell('You said ' + number);
        break;
    }
  }
  // you can add the function name instead of an action map
  assistant.handleRequest(responseHandler);
}


app.post('/google', function (req, res) {
  console.log(req.body);
  sillyNameMaker(req, res);
})


app.get('/', function (req, res) {
  res.send("Server is up and running.")
})


app.listen(3000, function () {
  console.log('Example app listening on port 3000!')
})

我得到的错误:

TypeError: Cannot read property 'originalRequest' of undefined
    at new ApiAiAssistant (/Users/clementjoudet/Desktop/Dev/google-home/node_modules/actions-on-google/api-ai-assistant.js:67:19)
    at sillyNameMaker (/Users/clementjoudet/Desktop/Dev/google-home/main.js:8:21)

我正在尝试打印req.body,但它未定义...提前感谢您的帮助。

1 个答案:

答案 0 :(得分:8)

您和Google上的操作包都在假设您如何使用Express。默认情况下,Express会填充req.body属性(请参阅reference for req.body)。相反,它依赖于其他中间件,例如body-parser

您应该可以使用

将身体解析器添加到项目中
npm install body-parser

然后使用它将请求正文解析为JSON(API.AI发送和使用google上的操作),并在定义app以将其附加到Express之后立即添加一些其他行:


var bodyParser = require('body-parser');
app.use(bodyParser.json());