key 来自：

一、发送消息

function sendText(key = '', text = '', mentioned = []) {
	try {
		axios({
	        method: 'post',
	        url: 'https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key='+ key,
	        data: {
	          msgtype: 'text',
	          text: {
	            content: text,
	            mentioned_list: mentioned
	          }
	        }
	      })
	} catch (error) {
      console.log(error)
    }
}

二、发送文件
要先上传到企业微信的服务器里，获得 id 后，再发送 id

上传文件

import FormData from 'form-data'
import fs from 'fs'
import axios from 'axios'

uploadFile = (key = '', filePath = '') => {
  try {
    const readStream = fs.createReadStream(filePath)
    const formData = new FormData()
    formData.append('media', readStream)

    return axios
      .post('https://qyapi.weixin.qq.com/cgi-bin/webhook/upload_media?type=file&&key=' + key, formData, {
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      })
      .then(({ data }) => {
        return data.media_id || ''
      })
  } catch (error) {
    console.log(error)
  }
}

通过得到的 id，发送文件到企业微信：

sendFile = (key ='', id = '') => {
  try {
    axios({
      method: 'post',
      url: 'https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=' + key,
      data: {
        msgtype: 'file',
        file: {
          media_id: id // 从 uploadFile 处获得
        }
      }
    })
  } catch (error) {
    console.log(error)
  }
}

和发送文本不同的是，里面的 data 不同