路由
释义:问路
可以根据网址来划分:
users/
http://aaa.com/users/view
http://aaa.com/users/login
http://aaa.com/users/reg
vip/
http://aaa.com/users/vip/login
http://aaa.com/users/vip/xxx
路由下面还可以再跟路由
const express = require('express');
let setver = express();