当多方请求时，Fosrestbundle主体为空 [英] Fosrestbundle body empty when multipart request

问题描述

在下面的代码中，我希望$request->getContents()获得HTTP请求的正文内容.发送非多部分请求时，这可以按预期工作，尽管使用多部分请求时，$body变量保持为空.

In the code bellow I expect the $request->getContents() to get the body content of the HTTP request. When sending non multipart request this works as expected though when using multipart requests the $body variable remains empty.

public function postDebugAction(Request $request) {
    $body = $request->getContent();

    if (empty($body)) {
        throw new \Exception('Body empty.');
    }


    return $this->view(array(), 201);
}

阅读此问答之后，我还添加了一个身体监听器.

After reading this question and answer I added a body listener aswell.

<?php

namespace VSmart\ApiBundle\Listener;

use FOS\RestBundle\EventListener\BodyListener as BaseBodyListener;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use FOS\RestBundle\Decoder\DecoderProviderInterface;

class BodyListener extends BaseBodyListener {

    /**
     * @var DecoderProviderInterface
     */
    private $decoderProvider;

    /**
     * @param DecoderProviderInterface $decoderProvider Provider for fetching decoders
     */
    public function __construct(DecoderProviderInterface $decoderProvider) {
        $this->decoderProvider = $decoderProvider;
    }

    /**
     * {@inheritdoc}
     */
    public function onKernelRequest(GetResponseEvent $event) {
        $request = $event->getRequest();

        if (strpos($request->headers->get('Content-Type'), 'multipart/form-data') !== 0) {
            return;
        }

        $format = 'json';

        if (!$this->decoderProvider->supports($format)) {
            return;
        }

        $decoder = $this->decoderProvider->getDecoder($format);
        $iterator = $request->request->getIterator();
        $request->request->set($iterator->key(), $decoder->decode($iterator->current(), $format));
    }

}

根据我的PHPUnit测试，尽管使用Postman和Advanced Rest Client来模拟请求时，此方法仍然有效，但主体似乎又是空的.我仔细检查了一下，以使用调试器将两个模拟请求作为PHPUnit运行.结果是，实际上，通过Rest客户端进行仿真时，主体为空，而通过PHPUnit运行时，主体为空.

According to my PHPUnit test this was working though when using Postman and Advanced Rest Client to simulate the request the body seems to be empty again. I double checked this to run both the simulate requests as PHPUnit with the debugger. Result is that, indeed, the body is empty when simulated via a Rest client and not empty when ran through PHPUnit.

我使用的测试用例:

POST网址:

http://localhost/EntisServer/web/app_dev.php/api2/debug

标题:

Authorization: Bearer ZGYzYjY1YzY4MGY3YWM3OTFhYTI4Njk3ZmI0NmNmOWZmMjg5MDFkYzJmOWZkOWE4ZTkyYTRmMGM4NTE1MWM0Nw
Content-Type: multipart/form-data; boundary=-----XXXXX

内容:

-----XXXXX
Content-Disposition: form-data; name="json"
Content-Type: application/json; charset=utf-8

{
    "blabla": 11
}

-----XXXXX
Content-Disposition: form-data; name="q_3101"; filename="image.jpg"
Content-Type: image/jpeg

contents of a file...

-----XXXXX--

更新 我不确定是否不使用BodyListener单步调试器.当我这样做时，结果是完全一样的.因此，在没有BodyListener的情况下，尽管模拟请求仍然为空，PHPUnit案例仍会获取主体.

UPDATE I was uncertain whether I stepped through the debugger without using the BodyListener. When I did the result is exactly the same. So, without the BodyListener the PHPUnit case gets the body though the simulated request is still empty.

推荐答案

在fos_rest.decoder_provider解码后，您可以在$request->files->all()中找到上传的文件.

You can find your uploaded files in $request->files->all() after fos_rest.decoder_provider decoding.

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