今天項目中用到GuzzleHttp,開始不知道怎麼用,其實還是很簡單的。
直接在項目根目錄,輸入以下命令
composer require guzzlehttp/guzzle
等下載安裝好,在vendor文件夾下,有一個guzzle目錄,此文件夾就是guzzlehttp的package了。
如何使用,可以參考官方文檔http://docs.guzzlephp.org/en/latest/
下面這段代碼就是官網文檔中的一段
$client = new GuzzleHttp\Client();
$res = $client->request('GET', 'https://api.github.com/user', [
'auth' => ['user', 'pass']
]);
echo $res->getStatusCode();
// "200"
echo $res->getHeader('content-type');
// 'application/json; charset=utf8'
echo $res->getBody();
// {"type":"User"...'
// Send an asynchronous request.
$request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org');
$promise = $client->sendAsync($request)->then(function ($response) {
echo 'I completed! ' . $response->getBody();
});
$promise->wait();
我在項目中,已經使用了form表單post,異步請求等等。
這篇文章還是挺有意思的《Laravel 下使用 Guzzle 編寫多線程爬蟲實戰》,代碼啥都有,雖然是個小玩意,但能學到很多東西。
比如:
- 在Laravel中如何創建命令
- 怎麼用多線程
貼一下代碼
<?php namespace App\Console\Commands;
use GuzzleHttp\Client;
use GuzzleHttp\Pool;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Exception\ClientException;
use Illuminate\Console\Command;
class MultithreadingRequest extends Command
{
private $totalPageCount;
private $counter = 1;
private $concurrency = 7; // 同時併發抓取
private $users = ['CycloneAxe', 'appleboy', 'Aufree', 'lifesign',
'overtrue', 'zhengjinghua', 'NauxLiu'];
protected $signature = 'test:multithreading-request';
protected $description = 'Command description';
public function __construct()
{
parent::__construct();
}
public function handle()
{
$this->totalPageCount = count($this->users);
$client = new Client();
$requests = function ($total) use ($client) {
foreach ($this->users as $key => $user) {
$uri = 'https://api.github.com/users/' . $user;
yield function() use ($client, $uri) {
return $client->getAsync($uri);
};
}
};
$pool = new Pool($client, $requests($this->totalPageCount), [
'concurrency' => $this->concurrency,
'fulfilled' => function ($response, $index){
$res = json_decode($response->getBody()->getContents());
$this->info("請求第 $index 個請求,用戶 " . $this->users[$index] . " 的 Github ID 爲:" .$res->id);
$this->countedAndCheckEnded();
},
'rejected' => function ($reason, $index){
$this->error("rejected" );
$this->error("rejected reason: " . $reason );
$this->countedAndCheckEnded();
},
]);
// 開始發送請求
$promise = $pool->promise();
$promise->wait();
}
public function countedAndCheckEnded()
{
if ($this->counter < $this->totalPageCount){
$this->counter++;
return;
}
$this->info("請求結束!");
}
}
運行結果如下:
$ php artisan test:multithreading-request
請求第 5 個請求,用戶 zhengjinghua 的 Github ID 爲:3413430
請求第 6 個請求,用戶 NauxLiu 的 Github ID 爲:9570112
請求第 0 個請求,用戶 CycloneAxe 的 Github ID 爲:6268176
請求第 1 個請求,用戶 appleboy 的 Github ID 爲:21979
請求第 2 個請求,用戶 Aufree 的 Github ID 爲:5310542
請求第 3 個請求,用戶 lifesign 的 Github ID 爲:2189610
請求第 4 個請求,用戶 overtrue 的 Github ID 爲:1472352
請求結束!