040.CI4框架CodeIgniter,使用Response实现前后端分离并返回JSON

01、BaseController.php代码如下：

<?php

namespace App\Controllers;

use CodeIgniter\Controller;
use CodeIgniter\HTTP\CLIRequest;
use CodeIgniter\API\ResponseTrait;
use CodeIgniter\HTTP\IncomingRequest;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use Psr\Log\LoggerInterface;

/**
 * Class BaseController
 *
 * BaseController provides a convenient place for loading components
 * and performing functions that are needed by all your controllers.
 * Extend this class in any new controllers:
 *     class Home extends BaseController
 *
 * For security be sure to declare any new methods as protected or private.
 */
abstract class BaseController extends Controller
{
    //引用Response
    use ResponseTrait;

    /**
     * Instance of the main Request object.
     *
     * @var CLIRequest|IncomingRequest
     */
    protected $request;

    /**
     * An array of helpers to be loaded automatically upon
     * class instantiation. These helpers will be available
     * to all other controllers that extend BaseController.
     *
     * @var list<string>
     */
    protected $helpers = [];

    /**
     * Be sure to declare properties for any property fetch you initialized.
     * The creation of dynamic property is deprecated in PHP 8.2.
     */
    // protected $session;

    /**
     * @return void
     */
    public function initController(RequestInterface $request, ResponseInterface $response, LoggerInterface $logger)
    {
        // Do Not Edit This Line
        parent::initController($request, $response, $logger);

        // Preload any models, libraries, etc, here.

        // E.g.: $this->session = \Config\Services::session();
    }

    public function get_url($aurl)
    {
        return base_url('public/index.php/') . $aurl;
    }

    public function get_respond($adata = '', $acode = '0', $amessage = 'success')
    {
        $response = [
            'data' => $adata,
            'code' => $acode,
            'message' => $amessage,
        ];
        return $this->respondCreated($data = $response);
    }
}

02、Login.php代码如下:

<?php namespace App\Controllers\Api\V1\Users;

use App\Controllers\BaseController;


//http://localhost/phmci4/public/index.php/api/v1/users/login
class Login extends BaseController
{

    public function index()
    {
        $data = array(
            'token' => 'token-admin',
        );
        return $this->get_respond($data);
    }

    //http://localhost/phmci4/public/index.php/api/v1/users/login/info
    public function info()
    {
        $data = array(
            'username' => 'token-admin',
            'roles' => ['admin'],
        );
        return $this->get_respond($data);
    }

    //http://localhost/phmci4/public/index.php/api/v1/users/login/code
    public function code()
    {
        $img_url = 'http://dummyimage.com/100x40/dcdfe6/000000.png&text=V3Admin';
        return $this->get_respond($img_url);
    }
}

03、结构如下：