前言

最近暑期实习，公司上下班比较自由不需要打卡，有时候比较轻松下午五点半就可以回家。有时候等公交时间觉得有点浪费，所以想自己实现一个程序，如果公交到站时间大概十分钟的时候自动发邮件提醒我(上班的时候手机一般开勿扰，自己设置了只有类似电话、短信、邮件才会手机提醒)，这样就可以直接搜索东西回家。

实现步骤

抓包

抓包工具(ios)：Steam/HTTPS抓包

试用了高德地图、百度地图、珠海公交公众号，发现高德、百度抓到的数据包加密了（小白的我还没有完全看懂hhh），珠海公交公众号直接把数据暴露了出来，因为想要节省时间快速实现，暂时采用第三种，后续有时间完善再补充。

接口测试

导出抓包的cURL并到Apifox一键导入生成快捷测试接口

顺便生成axios请求代码

const axios = require('axios');
const positionData = { "subrouteid": xxx, "segmentid": xxx, "stationname": "xxx" };
const config = {
  method: 'post',
  url: 'https://xxx',
  headers: {
    'User-Agent': 'apifox/1.0.0 (https://www.apifox.cn)',
    'content-type': 'application/json'
  },
  data: positionData
};
axios(config)
  .then(function (response) {
  })
  .catch(function (error) {
    console.log(error);
  });

创建node服务

npm init -y
//创建index.js
npm install axios

载入自动发送邮件功能

//https://www.npmjs.com/package/nodemailer
npm install nodemailer

编写mail函数

const nodemailer = require('nodemailer')
function mail(diff, time) {
  const transporter = nodemailer.createTransport({
    service: 'qq', 
    port: 465, 
    secureConnection: true, 
    auth: {
      user: 'xxx@qq.com',
      pass: 'xxx',
    },
  })

  const mailOptions = {
    from: 'xxx@qq.com', 
    to: 'xxx@qq.com', 
    subject: 'xxx', 
    html: `<p>当前K3距离港湾一号有</p><h1 style="color:red;">${diff + 1}站</h1>
          <p>预计到达时间</p><h1  style="color:red">${time}分钟</h1>`, 
  }
  transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
      return console.log(error)
    }
    console.log(`发送邮件成功`)
  })
}

载入node定时任务

//https://github.com/node-schedule/node-schedule
npm install node-schedule

const schedule = require('node-schedule');
const rule = new schedule.RecurrenceRule();
rule.dayOfWeek = [ 1, 2, 3, 4, 5]
rule.hour = 17
rule.minute = [new schedule.Range(30,59)]
rule.second = [new schedule.Range(30,40)];
const job = schedule.scheduleJob(rule, () => {
  getBusInfo()
})
if (nowTime == '00:00:00') {
  job.cancel({ reschedule: true })
}

最后

这样就一个下班回家公交订阅就完成了，快速实现的东西写得不太好，但是足够使用了，非常方便。

代码

const axios = require('axios');
const nodemailer = require('nodemailer')
const schedule = require('node-schedule');


const positionData = { "subrouteid": 参数, "segmentid": 参数, "stationname": "参数" };
const config = {
  method: 'post',
  url: '请求地址',
  headers: {
    'User-Agent': 'apifox/1.0.0 (https://www.apifox.cn)',
    'content-type': 'application/json'
  },
  data: positionData
};

const nowHours = new Date().getHours()
const nowMinutes = new Date().getMinutes()
const nowSeconds = new Date().getSeconds()
const nowTime = `${nowHours}:${nowMinutes}:${nowSeconds}`


function getBusInfo() {
  axios(config)
    .then(function (response) {
      const { diff, time } = response.data.data
      if (diff == 5 || time == 10) {
        mail(diff, time)
      }
    })
    .catch(function (error) {
      console.log(error);
    });
}


function mail(diff, time) {
  const transporter = nodemailer.createTransport({
    service: 'qq', 
    port: 465, 
    secureConnection: true, 
    auth: {
      user: '邮箱',
      pass: '授权码',
    },
  })

  const mailOptions = {
    from: '', 
    to: '', 
    subject: '', 
    html: ``,
  }

  transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
      return console.log(error)
    }
    console.log(`发送邮件成功`)
  })
}

const rule = new schedule.RecurrenceRule();
rule.dayOfWeek = [ 1, 2, 3, 4, 5]
rule.hour = 17
rule.minute = [new schedule.Range(30,59)]
rule.second = [new schedule.Range(30,40)];

const job = schedule.scheduleJob(rule, () => {
  getBusInfo()
})

if (nowTime == '00:00:00') {
  job.cancel({ reschedule: true })
}