php Symfony2：发送 HTTP 请求
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Symfony2 : send a HTTP Request
提问by Gabriel Theron
I am trying to make a HTTP Request from one of my controller to contact another URL, the goal being to contact another URL, and to simply print the HTML answer in my page. I tried :
我试图从我的一个控制器发出 HTTP 请求以联系另一个 URL，目标是联系另一个 URL，并简单地在我的页面中打印 HTML 答案。我试过 ：
$r = new Request();
$r->create('http://www.google.com', 'GET');
return $this->render(...mytemplate..., array('name' => $r->getContent());
My template is simply printing the variable "name".
Now when I do that, nothing is returned. It seems to me that the request is never sent, which is why nothing is returned.
我的模板只是打印变量“名称”。
现在，当我这样做时，什么也没有返回。在我看来，请求从未发送过，这就是为什么没有返回任何内容。
My question is : how do I send the request and get the content of the response?
我的问题是：如何发送请求并获取响应的内容？
Thanks in advance.
提前致谢。
回答by gremo
EDIT: I made a GremoBuzzBundlefor Buzz browser. It's similar to SensioBuzzBundlebut it has some nice configuration options.
编辑：我为 Buzz 浏览器制作了一个GremoBuzzBundle。它类似于SensioBuzzBundle，但它有一些不错的配置选项。
I would suggest to use Buzz browserand dependency injection. Buzz is a wrapper around cURL or file_get_contents. Edit your depsfile adding these lines:
我建议使用Buzz 浏览器和依赖注入。Buzz 是 cURL 或 file_get_contents 的包装器。编辑您的deps文件，添加以下几行：
[Buzz]
git=https://github.com/kriswallsmith/Buzz.git
target=/buzz
Then install vendors to actually download the library:
然后安装供应商以实际下载库：
php bin/vendors install
Then add two services(src/YourCompany/YourBundle/Resources/config/services.yml):
然后添加两个服务( src/YourCompany/YourBundle/Resources/config/services.yml)：
# cURL client for Buzz
buzz.client.curl:
class: Buzz\Client\Curl
public: false
calls:
- [setVerifyPeer, [false]]
# Buzz browser
buzz.browser:
class: Buzz\Browser
arguments: ['@buzz.client.curl']
The first service is the client (i prefer cURL over file_get_contents), the latter is the browser itself. The last step is to add one line of code in the autoloader(app/autoload.php):
第一个服务是客户端（我更喜欢 cURL 而不是 file_get_contents），后者是浏览器本身。最后一步是在自动加载器( app/autoload.php) 中添加一行代码：
$loader->registerNamespaces(array(
'Buzz' => __DIR__.'/../vendor/buzz/lib',
));
Then you can get the service and user the browser in your controllercode:
然后，您可以在控制器代码中获取服务并使用浏览器：
$browser = $this->get('buzz.browser');
$response = $browser->get('http://www.google.com');
回答by Peter Bailey
Two problems.
两个问题。
First of all, that's not the proper usage of Symfony\Component\HttpFoundation\Request::create(), which is a static initializer/factory of sorts. Your code should look like this
首先，这不是 的正确用法Symfony\Component\HttpFoundation\Request::create()，它是某种静态初始值设定项/工厂。你的代码应该是这样的
$r = Request::create( 'http://www.google.com', 'GET' );
Now you have a proper Request object. However, this is irrelevant which is your second problem: that's not how Symfony's request object is designed to work. Its purpose is not for executingHTTP requests, its for representingthem as objects in the framework.
现在你有了一个合适的 Request 对象。然而，这与您的第二个问题无关：这不是 Symfony 的请求对象的设计方式。它的目的不是为了执行HTTP 请求，而是为了将它们表示为框架中的对象。
Long story short, you can't do it that way. Perhaps you can use cURL to scrape the pageyou want?
长话短说，你不能那样做。也许您可以使用 cURL 来抓取您想要的页面？
回答by Kamil Adryjanek
I would recommend you using GuzzleHttp Client - best client that I know: http://docs.guzzlephp.org/en/latest/
我建议您使用 GuzzleHttp Client - 我所知道的最好的客户端：http://docs.guzzlephp.org/en/latest/
There is already nice bundle that integrates it into Symfony2 project: https://github.com/8p/GuzzleBundle
已经有很好的包将它集成到 Symfony2 项目中：https: //github.com/8p/GuzzleBundle
Then from your controller you can call:
然后从你的控制器你可以调用：
$client = $this->get('guzzle.client');
// GET request with parameters
$response = $client->get('http://httpbin.org/get', [
'headers' => ['X-Foo-Header' => 'value'],
'query' => ['foo' => 'bar']
]);
$code = $response->getStatusCode();
$body = $response->getBody();
More info can be found on: http://docs.guzzlephp.org/en/latest/index.html
可以在以下位置找到更多信息：http: //docs.guzzlephp.org/en/latest/index.html
回答by koral
Why not use curl? From PHP manual
为什么不使用卷曲？来自PHP 手册
$ch = curl_init("http://www.example.com/");
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
result = curl_exec($ch);
curl_close($ch);
回答by Mauro Colella
Apparently, you can use Symfony's built-in HTTP client. See: http://api.symfony.com/2.0/Symfony/Component/HttpKernel.html
显然，您可以使用 Symfony 的内置 HTTP 客户端。请参阅：http: //api.symfony.com/2.0/Symfony/Component/HttpKernel.html
The following is a very crude codebase, using Silex (built on top of Symfony). It simply instantiates a new HTTP client.
以下是一个非常粗略的代码库，使用 Silex（建立在 Symfony 之上）。它只是实例化一个新的 HTTP 客户端。
<?php
require_once __DIR__ . '/silex/vendor/autoload.php';
use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\HttpKernel\Controller\ControllerResolver;
use Symfony\Component\HttpKernel\HttpKernel;
use Symfony\Component\HttpKernel\Client;
//use Symfony\Component\HttpFoundation\Response;
$dispatcher = new EventDispatcher();
$resolver = new ControllerResolver();
$kernel = new HttpKernel( $dispatcher, $resolver );
$client = new Client( $kernel );
var_dump( $client );
?>
?>
You also have a detailed example of a HTTP client for Symfony2 as part of the unit testing documentation. See: http://symfony.com/doc/current/book/testing.html
作为单元测试文档的一部分，您还有一个用于 Symfony2 的 HTTP 客户端的详细示例。请参阅：http: //symfony.com/doc/current/book/testing.html
BUT (edit)these clients are local to your app. The concepts illustrated here are better implemented with the BrowserKit component of Symfony2. A headless browser within Symfony.
但是（编辑）这些客户端在您的应用程序中是本地的。此处说明的概念可以通过 Symfony2 的 BrowserKit 组件更好地实现。Symfony 中的无头浏览器。
Better even, use Goutte for requests to external websites. See https://github.com/FriendsOfPHP/Gouttefor details.
更好的是，使用 Goutte 请求外部网站。有关详细信息，请参阅https://github.com/FriendsOfPHP/Goutte。
回答by Tobias
https://github.com/CircleOfNice/CiRestClientBundle
https://github.com/CircleOfNice/CiRestClientBundle
Nice API for easy usage of the curl library and it returns a symfony response instead of a string result
用于轻松使用 curl 库的漂亮 API，它返回一个 symfony 响应而不是字符串结果
$restClient = $this->container->get('ci.restclient');
$restClient->get('http://www.someUrl.com');
$restClient->post('http://www.someUrl.com', 'somePayload');
$restClient->put('http://www.someUrl.com', 'somePayload');
$restClient->delete('http://www.someUrl.com');
$restClient->patch('http://www.someUrl.com', 'somePayload');
$restClient->head('http://www.someUrl.com');
$restClient->options('http://www.someUrl.com', 'somePayload');
$restClient->trace('http://www.someUrl.com');
$restClient->connect('http://www.someUrl.com');
