koa框架实现微信公众号回复用户小程序卡片

// 获取全局token
router.get('/token', async (ctx, next) => {
  try {
    let appid = ''
    let secret = ''
    let opts = {
      url: 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=' + appid + '&secret=' + secret
    }
    let res = await rp(opts)
    res = JSON.parse(res)
    let token = res.access_token
    ctx.data = { token: token }
  } catch (e) {
    console.log(e)
  }
  await next()
})

router.get('/sendxcx', async (ctx, next) => {
  let token = ctx.request.query.token,
    params = {
      touser: '',
      msgtype: 'miniprogrampage',
      miniprogrampage: {
        title: '',
        appid: '', // 小程序appid
        pagepath: '', // 小程序页面路径
        thumb_media_id:
          '', // 填入获取的素材media_id
      },
    }
  let opts = {
    method: 'post',
    body: JSON.stringify(params),
    uri:
      'https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=' +
      token,
  }
  let res = await rp(opts)
  ctx.data = res
  await next()
})