``` ~~~ const Koa = require('koa'); const reoute = require('koa-router')(); /*引入是实例化路由 推荐*/ let app= new Koa(); reoute.get('/',async (ctx)=>{ ctx.body='home'; }); reoute.get('/new',async (ctx)=>{ ctx.body='new'; }); //获取动态路由的传值 http://localhost:8000/index/123 reoute.get('/index/:cid',async (ctx)=>{ console.log(ctx.params) ;// {cid: '123'} ctx.body='home'+ctx.params.cid; }); // 动态路由里面可以传入多个值 http://localhost:8000/p/123/456 reoute.get('/p/:aid/:cid', async (ctx) => { // 获取动态路由的传值 console.log(ctx.params); // { aid: '123', cid: '456' } ctx.body = 'package详情'; }); app.use(reoute.routes()); app.use(reoute.allowedMethods()); app.listen(8000); ~~~ ```