我一直在寻找,我已经采取了一个略有不同的方法,而不是华丽的. (可能与Symfony的更新有关.)

我第一次不得不

use Symfony\Component\HttpFoundation\File\UploadedFile;

然后使用copy()来复制图像,因为Ornj表示将会移动它.

copy($art1->getFixturesPath() . '01.jpg',$art1->getFixturesPath() . '01-copy.jpg');

然后使用以下命令创建并添加文件：

$file = new UploadedFile($art1->getFixturesPath() . '01-copy.jpg','Image1',null,true);

$art1->setFile($file);

$manager->persist($art1);

如果在”UploadedFile’构造函数中没有将最后一个参数设置为’true”,因为在运行”doctrine：fixtures：load”时会抛出一个未知错误.
该参数为“测试模式是否有效”.看到它是一个夹具,设置为测试模式是有意义的.

方法“getFixturesPath()”只是检索存储样本图像的路径：

// Entity file
public function getFixturesPath()
{
    return $this->getAbsolutePath() . 'web/uploads/art/fixtures/';
}

“getAbsolutePath()”方法已经从Doctrine File Uploads开始.

完整的工作代码：
实体：

<?PHP
//src/User/MyBundle/Entity/Art.PHP

namespace User/MyBundle/Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\HttpFoundation\File\UploadedFile;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * 
 * Art Entity
 * 
 * @ORM\Entity(repositoryClass="User\MyBundle\Entity\Repository\ArtRepository")
 * @ORM\Table(name="art")
 * @ORM\HasLifecycleCallbacks
 */
class Art
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string",length=100)
     */
    protected $title;

    /**
     * @ORM\Column(type="string",length=255,nullable=true)
     */
    protected $path;

    /**
     * @Assert\File(maxSize="6000000")
     */
    private $file;

    private $temp;

    public function getAbsolutePath()
    {
        return null === $this->path ? null : $this->getUploadRootDir() . '/' . $this->path;
    }

    public function getWebPath()
    {
        return null === $this->path ? null : $this->getUploadDir() . '/' . $this->path;
    }

    protected function getUploadRootDir()
    {
        // the absolute directory path where uploaded
        // documents should be saved
        return __DIR__ . '/../../../../web/' . $this->getUploadDir();
    }

    protected function getUploadDir()
    {
        // get rid of the __DIR__ so it doesn't screw up
        // when displaying uploaded doc/image in the view.
        return 'uploads/art';
    }

    public function getFixturesPath()
    {
        return $this->getAbsolutePath() . 'web/uploads/art/fixtures/';
    }

    /**
     * Sets file.
     *
     * @param UploadedFile $file
     */
    public function setFile(UploadedFile $file = null)
    {
        $this->file = $file;
        // check if we have an old image path
        if (isset($this->path)) {
            // store the old name to delete after the update
            $this->temp = $this->path;
            $this->path = null;
        } else {
            $this->path = 'initial';
        }
    }

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

    /**
     * @ORM\PrePersist()
     * @ORM\PreUpdate()
     */
    public function preUpload()
    {
        if (null !== $this->getFile()) {
            // do whatever you want to generate a unique filename
            $filename = sha1(uniqid(mt_rand(),true));
            $this->path = $filename . '.' . $this->getFile()->guessExtension();
        }
    }

    /**
     * @ORM\PostPersist()
     * @ORM\PostUpdate()
     */
    public function upload()
    {
        // the file property can be empty if the field is not required
        if (null === $this->getFile()) {
            return;
    }

        // if there is an error moving the file,an exception will
        // be automatically thrown by move(). This will properly prevent
        // the entity from being persisted to the database on error
        $this->getFile()->move($this->getUploadRootDir(),$this->path);

        // check if we have an old image
        if (isset($this->temp)) {
            // delete the old image
            unlink($this->getUploadRootDir() . '/' . $this->temp);
            // clear the temp image path
            $this->temp = null;
        }

        $this->file = null;
    }

    /**
     * @ORM\PostRemove()
     */
    public function removeUpload()
    {
        if ($file = $this->getAbsolutePath()) {
            unlink($file);
        }
    }
}

夹具：

<?PHP
// src/User/MyBundle/DataFixtures/ORM/ArtFixtures.PHP

namespace User\MyBundle\DataFixtures\ORM;

use Doctrine\Common\DataFixtures\AbstractFixture;
use Doctrine\Common\DataFixtures\OrderedFixtureInterface;
use Doctrine\Common\Persistence\ObjectManager;
use Fredzz\LotwBundle\Entity\Art;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class ArtFixtures extends AbstractFixture implements OrderedFixtureInterface
{
    public function load(ObjectManager $manager)
    {
        $art1 = new Art();
        $art1->setTitle('MyTitle');
        $art1->setDescription('My description');

        copy($art1->getFixturesPath() . '01.jpg',$art1->getFixturesPath() . '01-copy.jpg');
        $file = new UploadedFile($art1->getFixturesPath() . '01-copy.jpg',true);
        $art1->setFile($file);

        $art1->setUser($manager->merge($this->getReference('user-1')));

        $manager->persist($art1);
        $manager->flush();
    }
}

希望这有助于某人！对不起,如果有什么问题.我还在学习 ：)