actions-on-google api.ai不会在node请求中使用nodejs和express发送正文

Question

我正试图在我的计算机上运行带有api.ai的actions-on-google上的sillyNameMaker示例.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.有什么我没有正确设置？

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.

Answer 1

您和Google上的操作包都在假设您如何使用Express.默认情况下,快递也没有填充req.body属性(见的req.body参考).相反,它依赖于身体解析器等额外的中间件来实现.

您应该能够使用身体解析器添加身体解析器

npm install body-parser

然后使用它将请求主体解析为JSON(API.AI发送和使用google上的操作),并在您定义app将其附加到Express 之后立即使用一些额外的行:

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