Symfony:如何在 ppt 和 pptx 上获得正确的 mime 类型
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【中文标题】Symfony:如何在 ppt 和 pptx 上获得正确的 mime 类型【英文标题】:Symfony : How to get right mime type on ppt and pptx 【发布时间】:2020-01-20 15:40:13 【问题描述】:我想将一个 PowerPoint 文件导入我的 Symfony 应用程序。 我允许这些 mime 类型进入白名单参数。
co_upload_white_list:
- "image/*"
- "application/pdf"
- "application/x-pdf"
- "application/msword"
- "application/vnd.openxmlformats-officedocument.presentationml.presentation"
- "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
- "application/vnd.oasis.opendocument.text"
- "application/vnd.ms-excel"
- "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
- "application/vnd.oasis.opendocument.spreadsheet"
- "application/vnd.ms-powerpoint"
此代码工作正常,但 Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php 在 $file->getMimeType() 处返回的 mimetype : application / octet-stream 但它应该是 application/vnd.openxmlformats-officedocument .presentationml.presentation
use Oneup\UploaderBundle\Uploader\Naming\NamerInterface;
class UploadListener implements NamerInterface
[....]
public function onValidate(ValidationEvent $event)
/**
* $file is oneup/uploader-bundle/Uploader/File/FilesystemFile.php
*/
$file = $event->getFile();
$mimeType = $file->getMimeType();
$fileSize = $file->getSize();
$ext = $file->getExtension();
$hotel = $event->getRequest()->attributes->get('hotel');
$locale = ($hotel->getUserLocale()) ? $hotel->getUserLocale() : 'en';
if (explode("/", $mimeType)[0] != "image" && !in_array($mimeType, $this->uploadWhiteList))
$this->messenger->error("MimeType invalid: %mimeType%", ['%mimeType%' => $mimeType], $locale);
throw new HttpException(400, "File type invalid, mimetype is '$mimeType', allowed=".json_encode($this->uploadWhiteList));
[...]
有没有办法获得正确的 mime 类型?
【问题讨论】:
【参考方案1】:尝试使用mime_content_type
echo mime_content_type("example.ppt");
输出:
应用程序/vnd.ms-powerpoint
Try this
使用 symfony 这对我有用(symfony 3.4);
$filepath = "/tmp/example.ppt";
file_put_contents($filepath, file_get_contents("https://sample-videos.com/ppt/Sample-PPT-File-500kb.ppt"));
$file = new \Symfony\Component\HttpFoundation\File\File($filepath);
echo $file->getMimeType();
同样的输出:
应用程序/vnd.ms-powerpoint
【讨论】:
谢谢。我将完成我的代码,我从 ValidationEvent 取回 $event。我的课程是事件监听 - name: "kernel.event_listener", event: "oneup_uploader.validation", method: "onValidate" 添加:$file 是一个扩展 UploadedFile 并实现 FileInterface 的 oneup/uploader-bundle/Uploader/File/FilesystemFile.php。并且 getMimeType() 返回 application/octetStream以上是关于Symfony:如何在 ppt 和 pptx 上获得正确的 mime 类型的主要内容,如果未能解决你的问题,请参考以下文章