[CodeIgniter4]-将控制器放入子目录中

/**
 * --------------------------------------------------------------------
 * Router Setup
 * 路由器设置
 * --------------------------------------------------------------------
 */
$routes->setDefaultNamespace('App\Controllers');
$routes->setDefaultController('Index');
$routes->setDefaultMethod('index');
$routes->setTranslateURIDashes(false);
$routes->set404Override();
$routes->setAutoRoute(true);

/**
 * --------------------------------------------------------------------
 * Route Definitions
 * 路由定义
 * --------------------------------------------------------------------
 */

// We get a performance increase by specifying the default
// route since we don't have to scan directories.
//我们通过指定默认值来提高性能
//路由，因为我们不必扫描目录。
$routes->get('/', 'Index::index');

<?php namespace App\Controllers\Admin;

// 采用命名空间的方式调用这个功能
use App\Controllers\BaseController;

class Index extends BaseController {

    public function index()
    {
        echo 'admin';
    }

}