import Koa from 'koa'; import { DBMiddleware } from './db/index.js'; const app = new Koa(); app.use(DBMiddleware); app.use(async (ctx) => { let res = await ctx.execute('select * from users;'); ctx.body = { code: 0, msg: '数据查询成功', data: res, }; }); app.listen(4000, () => { console.log('Server is running at port:', 4000); });