CakePHP中间件：集成第三方API和服务的功能

// src/Middleware/ApiMiddleware.php

namespace AppMiddleware;

use CakeHttpResponse;
use CakeHttpServerRequest;
use GuzzleHttpClient;

class ApiMiddleware
{
    public function __invoke(ServerRequest $request, Response $response, $next)
    {
        // 处理与API的交互逻辑

        // 发送请求到API
        $client = new Client();
        $apiResponse = $client->get('https://api.example.com/data');

        // 获取API响应数据
        $data = json_decode($apiResponse->getBody(), true);

        // 将API响应数据设置到请求对象中，以便在控制器中使用
        $request = $request->withAttribute('apiData', $data);

        // 继续传递请求和响应到下一个中间件或控制器
        $response = $next($request, $response);

        return $response;
    }
}

// config/middleware.php

$middlewareQueue
    ->add(new AppMiddlewareApiMiddleware());

// src/Controller/ExampleController.php

namespace AppController;

use CakeHttpExceptionNotFoundException;
use CakeHttpResponse;
use CakeORMTableRegistry;

class ExampleController extends AppController
{
    public function index()
    {
        // 获取中间件中设置的API数据
        $apiData = $this->request->getAttribute('apiData');

        // 使用API数据执行其他操作
        // ...

        // 返回响应
        $this->set([
            'apiData' => $apiData,
            '_serialize' => ['apiData']
        ]);
    }
}