php - 通过 URL 输入设置 Symfony 上传的文件

Question

通过 XML 导入，我还获得了外部服务器上 jpg 图像的 url 链接。我想复制图像。我尝试通过 Symfony 中的 UploadedFile() 函数来执行此操作，然后将它们添加到我的实体中。

通过以下代码，我想在 Symfony 图像对象中添加 url 图像。

$f = new UploadedFile();
$f->openFile($imageUrl);

所以打开文件后我想将它们添加到我的图像实体中。

$image = new image();
$image->setFile($f);

该实体包含以下文件参数:

/**
* Sets file.
*
* @param \Symfony\Component\HttpFoundation\File\UploadedFile $file
*/
public function setFile(UploadedFile $file = NULL) {
    $this->file = $file;
}

/**
* Get file.
*
* @return UploadedFile
*/
public function getFile() {
    return $this->file;
}

然后我收到参数丢失的错误。但使用 from 可以使用以下代码:

$image = new image();
$image->setFile($request->files->get('images'));

Answer 1

我使用 vich uploader 包 ( https://github.com/dustin10/VichUploaderBundle ) 来上传图像，该包提供了一种从表单上传图像的方法。我和你有同样的用例。我必须从 xml 导入图像。

我使用 vich 服务 (vich_uploader.upload_handler) 从 xml 中执行此操作:

实体:

namespace AppBundle;

use Doctrine\ORM\Mapping AS ORM;
use Symfony\Component\HttpFoundation\File\File;

/**

 * @ORM\Table(name="entity")
 * @Vich\Uploadable
 */
class Entity
{

/**
 * @ORM\Column(type="string", nullable=true)
 */
private $image;

/**
 * @Vich\UploadableField(mapping="test_image", fileNameProperty="image")
 * @var File
 */
private $imageFile;


/**
 * @return File
 */
public function getImageFile()
{
    return $this->imageFile;
}

/**
 * @param File|\Symfony\Component\HttpFoundation\File\UploadedFile $image
 */
public function setImageFile(File $image = null)
{
    $this->imageFile = $image;

    if ($image) {
        // It is required that at least one field changes if you are using doctrine
        // otherwise the event listeners won't be called and the file is lost
        $this->updatedAt = new \DateTime('now');
    }
}
}

服务:

<?php

namespace AppBundle;

use Symfony\Component\HttpFoundation\File\UploadedFile;
use Vich\UploaderBundle\Handler\UploadHandler;

class ExternalImageUploader
{

private $uploadHandler;
private $kernelRootDir;


public function __construct(UploadHandler $uploadHandler, $kernelRootDir)
{
    $this->uploadHandler = $uploadHandler;
    $this->kernelRootDir = $kernelRootDir;
}

public function copyExternalFile($url, $entity)
{

    $newfile = $this->kernelRootDir.'/../web/uploads/test.jpg';

    copy($url, $newfile);
    $mimeType = mime_content_type($newfile);
    $size = filesize ($newfile);
    $finalName = md5(uniqid(rand(), true)).".jpg";

    $uploadedFile = new UploadedFile($newfile,$finalName,$mimeType, $size);

    $entity->setImageFile($uploadedFile);
    $this->uploadHandler->upload($entity,'imageFile');


}
}

服务.xml

<service id="app.external_image_uploader" class="AppBundle\ExternalImageUploader">
        <argument type="service" id="vich_uploader.upload_handler" />
        <argument>%kernel.root_dir%</argument>
    </service>