https://sites.thinkphp.cn/1556331

https://www.kancloud.cn/manual/thinkphp5_1/353946

默认路由

#5.1
vi route/route.php

Route::get('/', function () {
    return '404';
});

#5.0
use think\Route;

Route::get('/',function(){ 
    return '404';
});