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Alexa API技能-nodejs get请求未执行

alexa-skills-kit httprequest aws-lambda request node.js

Mikmac · 技术社区 · 6 年前

我正在做我的第一个 Alexa skill 并且,作为起点,希望Alexa陈述从简单的GET请求中检索到的数据(请参见下面的lambda函数)。然而,由于某种原因,请求实际上似乎没有执行——请求内部没有任何内容。get()正在打印到控制台,处理程序执行后,speechOutput是“外部请求”。我还不太熟悉CloudWatch日志,无法找到有关网络请求的任何信息,甚至无法知道是否有人试图这样做。欢迎您的帮助!

'use strict';
//Required node packages
const alexa = require('./node_modules/alexa-sdk');
const request = require('request');
// var https = require('https')

//this is the handler, when the lambda is invoked, this is whats called
exports.handler = function (event, context, callback) {
  const skill = alexa.handler(event, context);

  skill.appId = '<app_id>';
  skill.registerHandlers(handlers);
  skill.execute();
};

//Alexa handlers
const handlers = {
  'LaunchRequest': function () {
    console.log("inside of LaunchRequest");
    const speechOutput = "Hello from NASA!";
    this.response.speak(speechOutput).listen(speechOutput);
    this.emit(':responseReady');
  },

  //Entering our main, part finding function
  'GetAPOD': function () {
    const intent_context= this
    const speechOutput = getData()
    intent_context.response.speak(speechOutput).listen(speechOutput);
    intent_context.emit(':responseReady');

  },

  'Unhandled': function (){
    console.log("inside of unhandled");
    const speechOutput = "I didn't understand that.  Please try again";
    this.response.speak(speechOutput).listen(speechOutput);
    this.emit(':responseReady');

  }
};

const getData = function() {
  const url = "https://api.nasa.gov/planetary/apod?api_key=<key>"
  console.log("inside get data")
  request.get(url, function (error, response, body) {
    console.log("inside request")
    console.log('error', error) //Print the error if one occurred
    console.log('statusCode:', response && response.statusCode); // Print the response status code if a response was received
    console.log('body:', body); // Print the HTML for the Google homepage.
    return "complete request"
    return body
  });

  return "outside request"
}

1 回复 | 直到 6 年前

Daniel Costello 6 年前

我发现在过去,这样的API请求会遭到破坏,因为它们不是同步的,就像David所说的那样。为了解决这个问题,我不得不将请求塞进一个承诺中,让它得到解决,类似于您的情况:

更改您的函数以包含承诺:

function getData = function() {
 const url = "https://api.nasa.gov/planetary/apod?api_key=<key>"
 console.log("inside get data")
    return new Promise(function(resolve, reject) {
        request.get(url, function (error, response, body) {
            if (err) {
                reject(err);
            }

            if (body) {
                resolve(JSON.parse(body));
            }
        });
    });
}

然后改变你的意图,使用承诺:

   //Entering our main, part finding function
  'GetAPOD': function () {
    getData()
   .then(function(body) {
    let speechOutput = body;
    intent_context.response.speak(speechOutput).listen(speechOutput);
    intent_context.emit(':responseReady');
    }

沿着这条线的东西。您需要对其进行一些操作,以确保结果按照您的意愿产生。希望这有帮助。 D