mpvue-dev-temp/server/controllers/top.js

const {mysql} = require('../qcloud')

module.exports = async (ctx) => {
  const top = await mysql('books')
          .select('id', 'title', 'image', 'count')
          .orderBy('count', 'desc')
          .limit(9)
  ctx.state.data = {
    list: top
  }
}