[API距离矩阵仅在Java语言中调用

Question

因此，我是一位非常初级的程序员，试图了解如何使用纯Javascript调用/获取Google Distance Matrix API中的数据。

下面是我的密码

https = require('https')

function getDistance(app){

    console.log('testing1');
    let defaultPath = 'maps.googleapis.com/maps/api/distancematrix/json?units=metric';
    let APIKey = '&key=<API KEY HERE>';
    let origin = 'Tampines Avenue 1, Temasek Polytechnic';
    let destination = 'Tampines Central 5, Tampines Mall';
    let newPath = defaultPath+ '&origins=' + origin + '&destinations=' +destination + APIKey;

    console.log('https://'+ newPath); //this prints the correct path

https.get('https://'+ newPath, (res) =>{ //i assume the problem begins here?

  console.log('testing2')//doesnt print

  let body = ''; //no idea what this does. Copied from a school lab sheet

  res.on('data', (d) => { 
    console.log('testing3') //this doesn't print
    let response = JSON.parse(body);

    let distance = response.rows[0].elements.distance.text //are these correct?
    let travelTime = response.rows[0].elements.duration.text 

    console.log(distance) //doesnt print
    console.log(response.rows[0]) //doesnt print

    app.add('distance between is ' + distance + '. Time taken is ' + travelTime);
    console.log(response);
  });
});

}

我很确定'https：//'+ newPath是正确的，因为它打印在console.log中

并将链接放入浏览器我得到这个结果

所以有人可以向我解释我做错了什么吗？哦，还有，我不知道这是否有必要，但我是在Dialogflow.cloud.google.com中作为我的任务聊天机器人来执行此操作]

这是我得到的错误

错误：未为平台定义任何响应：在以下位置未定义WebhookClient.send_（/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:428:13）然后答应（/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:246:38）在process._tickDomainCallback处（内部/进程/next_tick.js:229:7）

因此，我是一位非常初级的程序员，试图了解如何使用纯Javascript调用/获取Google Distance Matrix API中的数据。以下是我的代码https = require（'https'）函数...

Answer 1

我在GitHub上发现了类似的问题：https://github.com/dialogflow/dialogflow-fulfillment-nodejs/issues/22

Answer 2

您没有显示所有代码，但看起来getDistance()是您已在未显示的代码中注册的Intent Handler函数。