README

CakePHP Http库

此库提供PSR-15 Http中间件服务器，PSR-7请求和响应对象，以及PSR-18 Http客户端。这些类共同允许您处理传入的服务器请求和发送出站HTTP请求。

使用HttpClient

发送请求很简单。进行GET请求看起来像

use Cake\Http\Client;

$http = new Client();

// Simple get
$response = $http->get('http://example.com/test.html');

// Simple get with querystring
$response = $http->get('http://example.com/search', ['q' => 'widget']);

// Simple get with querystring & additional headers
$response = $http->get('http://example.com/search', ['q' => 'widget'], [
  'headers' => ['X-Requested-With' => 'XMLHttpRequest'],
]);

要了解更多信息，请阅读HttpClient文档。

使用Http服务器

Http服务器允许HttpApplicationInterface处理请求并发出响应。要开始，首先实现Cake\Http\HttpApplicationInterface。一个最小示例可能如下所示

namespace App;

use Cake\Core\HttpApplicationInterface;
use Cake\Http\MiddlewareQueue;
use Cake\Http\Response;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class Application implements HttpApplicationInterface
{
    /**
     * Load all the application configuration and bootstrap logic.
     *
     * @return void
     */
    public function bootstrap(): void
    {
        // Load configuration here. This is the first
        // method Cake\Http\Server will call on your application.
    }

    /**
     * Define the HTTP middleware layers for an application.
     *
     * @param \Cake\Http\MiddlewareQueue $middlewareQueue The middleware queue to set in your App Class
     * @return \Cake\Http\MiddlewareQueue
     */
    public function middleware(MiddlewareQueue $middlewareQueue): MiddlewareQueue
    {
        // Add middleware for your application.
        return $middlewareQueue;
    }

    /**
     * Handle incoming server request and return a response.
     *
     * @param \Psr\Http\Message\ServerRequestInterface $request The request
     * @return \Psr\Http\Message\ResponseInterface
     */
    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        return new Response(['body'=>'Hello World!']);
    }
}

一旦您有一个带有中间件的应用程序，您就可以开始接收请求。在应用程序的webroot中，您可以添加一个index.php来处理请求

<?php
// in webroot/index.php
require dirname(__DIR__) . '/vendor/autoload.php';

use App\Application;
use Cake\Http\Server;

// Bind your application to the server.
$server = new Server(new Application());

// Run the request/response through the application and emit the response.
$server->emit($server->run());

然后您可以使用PHP的内置Web服务器来运行您的应用程序

php -S localhost:8765 -t ./webroot ./webroot/index.php

有关中间件的更多信息，请查阅文档