Laravel 5.2:未找到类Imagick

Question

我们正在将PDF页面转换为多个单个图像.我们在stackoverflow中找到了一个代码片段,并将其转换为服务类.我们安装了Imagick,它也出现在phpinfo()中.但是,在我们的laravel应用程序5.2版中,我们遇到了以下错误.

ReflectionException in Container.php line 798:
Class Imagick does not exist

我们在laravel环境之外测试了我们的代码,它的工作就像一个魅力.没有抛出这样的错误.我们还运行了以下命令来检查Imagick

php -i | grep -i imagick

这是输出

    /etc/php5/cli/conf.d/20-imagick.ini,
    imagick
    imagick module => enabled
    imagick module version => 3.4.3RC1
    imagick classes => Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator
    Imagick compiled with ImageMagick version => ImageMagick 6.7.7-10 2016-06-01 Q16 http://www.imagemagick.org
    Imagick using ImageMagick library version => ImageMagick 6.7.7-10 2016-06-01 Q16 http://www.imagemagick.org
    imagick.locale_fix => 0 => 0
    imagick.progress_monitor => 0 => 0
    imagick.skip_version_check => 0 => 0

一切似乎都是对的.它在Laravel外面工作但不在laravel.我不知道出了什么问题.我们必须配置Laravel才能使用Imagick吗？

这是我们正在使用的服务类

<?php

namespace App\Services\Utilities;

use Imagick;

class PdfToImageService
{
    /**
     * Destination folder where images will be saved
     * @var string
     */
    protected $destination = 'images/users/';

    /**
     * Injecting dependencies
     * 
     * @param Imagick $imagick
     */
    function __construct(Imagic $imagick)
    {
        $this->imagick = $imagick;
    }

    /**
     * Convert pdf having multiple pages to multiple single images
     * 
     * 1. Strip document extension
     * 2. Convert this document
     * 3. Set background color and flatten. It Prevents black background on objects with transparency
     * 4. Set image resolution
     * 5. Determine number of pages
     * 6. Compress Image Quality
     * 7. Generate images from each pdf page
     * 8. Destroy current imagick session
     * 
     * @param  string $fileName
     * @return array  $convertedImageNames
     */
    public function createImages($fileName)
    {
        $fileName = basename($fileName);
        $this->imagick->readImage($fileName);
        $this->imagick->setImageBackgroundColor('white');
        $this->imagick->setResolution(300,300);
        $this->imagick->setImageCompressionQuality(100);

        $convertedImageNames = $this->generateImageFromPDFPage(
            $fileName, $this->imagick->getNumberImages()
        );

        $this->imagick->destroy();

        return $convertedImageNames;
    }

    /**
     * Loop throught each pdf pages and convert it to image.
     *      A. Set iterator postion
     *      B. Set image format
     *      C. Write Images to destination folder 
     * 
     * @param  string  $fileName
     * @param  integer $noOfPages
     * @return array
     */
    private function generateImageFromPDFPage($fileName, $noOfPages)
    {
        for($i = 0;$i < $noOfPages; $i++) {
            $this->imagick->setIteratorIndex($i);
            $this->imagick->setImageFormat('jpeg');    
            $this->imagick->writeImage($this->destination.$fileName.'-'.$i.'.jpg');
            $convertedImageNames[$i] = $fileName.'-'.$i.'.jpg';
        }

        return $convertedImageNames;
    }
}

Answer 1

如果你的linux是ubuntu，你可以尝试编辑位于
cd /etc/php5/apache2/php.ini中的php.ini吗？

cat php.ini | grep extension=imagick.so

如果有搜索结果，那么你可能会得到这个
;extension=imagick.so
你删除这个分号 ; 如果没有任何结果，

echo "extension=imagick.so" >> /etc/php5/apache2/php.ini

最后

sudo /etc/init.d/apahce2 restart

它适用于此代码

<?php

namespace App\Http\Controllers;
use Illuminate\Routing\Controller as BaseController;
use Imagick;

class GuestController extends BaseController {

    public $imagic;

    public function __construct(){
        $this->imagic = new Imagick();
    }

    public function test(){
        return get_class_methods($this->imagic);
    }
}