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下载后删除文件

symfony php

jrswgtr Kushal Chavan · 技术社区 · 9 年前

我目前有以下控制器操作:

/**
 * @Route(
 *      "/download/{crop_id}",
 *      name="download_cropped",
 *      options={"expose"=true}
 * )
 *
 * @ParamConverter(
 *      "crop",
 *      class="WebwijsCropperBundle:Crop",
 *      options={"id" = "crop_id"}
 * )
 *
 */
public function downloadAction(Crop $crop)
{
    $dir = $this->container->getParameter('image.cropped.dir');
    return new BinaryFileResponse($dir . '/' . $crop->getCroppedFile());
}

我创建了这个EventListener,希望在发送响应后删除图像。每次响应后都会触发此侦听器。

那么,我如何获得我需要知道的信息,如果响应来自正确的控制器动作。如何获取crop\u id参数,以便知道要删除哪个文件?

class FileRemovalListener
{
    private $logger;

    public function __construct(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }

    public function onKernelTerminate(PostResponseEvent $event)
    {
        $response = $event->getResponse();
        $request = $event->getRequest();
        // what do i have to do here to know 
        // from which controller action the response comes?

    }
}

这是服务中的服务定义。yml公司

WebwijsCropperBundle\EventListener\FileRemovalListener:
        tags:
            - { name: kernel.event_listener, event: kernel.terminate, method: onKernelTerminate }

3 回复 | 直到 9 年前

miikes 9 年前

如果只想删除文件,请尝试以下操作:

public function downloadAction(Crop $crop)
{
    $dir = $this->container->getParameter('image.cropped.dir');
    $response = new BinaryFileResponse($dir . '/' . $crop->getCroppedFile());

    $response->deleteFileAfterSend(true);

    return $response;
}

T. Abdelmalek 9 年前

deleteFileAfterSend(bool $shouldDelete)

注意:如果使用X-Sendfile头,则不会使用deleteFileAfterSend设置。

Pierre Alexaline 4 年前

函数“deleteFileAfterSend(bool$bool)”的精度。正如symfony文件所述 . https://symfony.com/doc/current/components/http_foundation.html#serving-files .

$zipName = 'downloads/' . uniqid().'.zip';
$response = new StreamedResponse();
$response->headers->set(...);

return $response->setCallBack(function () use($zipName) {
    readfile($zipName);
    $filesystem = new Filesystem();
    try {
       $filesystem->remove($zipName);
    } catch (IOExceptionInterface $exception) {
        echo "Cannot delete the zip file : ". $zipName;
    }
});

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