廢話不多說，直接上代碼
const Koa = require('koa');// 創(chuàng)建一個(gè)Koa對(duì)象表示web app本身:
const app =new Koa();
// 打印request URL
app.use(async (ctx, next) => {
? ? console.log(`Process ${ctx.request.method} ${ctx.request.url}...`);
? ? await next();
});
// 在端口3000監(jiān)聽
app.listen(3000, () => {
? console.log('[myapp]已經(jīng)運(yùn)行，端口為300')
})
