How to use Hyperf framework for request interception

How to use the Hyperf framework for request interception

In developing web applications, we often need to intercept and verify user requests. The Hyperf framework is a high-performance PHP framework based on Swoole, which provides convenient request interception functions, allowing us to easily process and verify requests. This article will introduce how to use the Hyperf framework for request interception and provide specific code examples.

The Hyperf framework provides an HTTP middleware mechanism. We can intercept requests by writing custom middleware. The following is a simple example that demonstrates how to write a request interception middleware:

<?php

declare(strict_types=1);

namespace AppMiddleware;

use HyperfHttpServerContractRequestInterface;
use HyperfHttpServerContractResponseInterface as HttpResponse;
use HyperfUtilsContext;

class AuthMiddleware
{
    public function __construct(RequestInterface $request, HttpResponse $response)
    {
        $this->request = $request;
        $this->response = $response;
    }

    public function handle($request, Closure $next)
    {
        // 在这里可以对请求进行拦截和验证
        if (! $this->checkToken($request)) {
            return $this->response->json([
                'code' => 401,
                'message' => 'Unauthorized',
            ]);
        }

        // 继续处理下一个中间件
        return $next($request);
    }

    private function checkToken($request)
    {
        // 在这里可以实现自己的验证逻辑
        $token = $this->request->header('Authorization', '');
        if ($token !== '123456') {
            return false;
        }

        // 将用户信息保存在上下文中
        Context::set('user', [
            'id' => 1,
            'name' => 'John Doe',
        ]);

        return true;
    }
}

In the above code, AuthMiddleware is a custom middleware class. By implementing the handle method, we can intercept and verify requests here. If the verification fails, you can directly return an error response, otherwise you can continue processing the next middleware. In this example, we verify by checking the Authorization field in the request header. If the verification passes, we save the user information in the context so that it can be easily obtained in subsequent processing.

To use this middleware, we need to register it in the config/autoload/middlewares.php configuration file. An example is as follows:

<?php

declare(strict_types=1);

return [
    'http' => [
        AppMiddlewareAuthMiddleware::class,
    ],
];

The above code registers the AuthMiddleware middleware as a global middleware, which will be applied to all HTTP requests.

Through the above steps, we can use the Hyperf framework to intercept requests. When a request arrives, the middleware will be executed in sequence. We can intercept and verify the request in the middleware and return the corresponding response according to the situation. Using middleware can easily implement various request verification needs.

Summary: This article introduces how to use the Hyperf framework to intercept requests. By writing custom middleware, we can easily intercept and verify requests. By implementing the handle method of the middleware, we can perform various operations on the request and return the corresponding response according to the situation. Using the request interception function of the Hyperf framework can help us build more secure and stable web applications.

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