ImageMagick缺少解码代理

Question

我最近搬到MEDIATEMPLE和安装的ImageMagick和IMagick跟随他们的知识库文章在这里.

没有错误和phpinfo()显示模块正确安装.

当我尝试通过PHP在JPG图像上使用IM时,我收到此错误

Uncaught exception 'ImagickException' with message 'no decode delegate for this image format 
/home/149263/domains/wer.com/html/images/pictures/post/tmp/original/' @ error/constitute.c/ReadImage/544' in /nfs/c10/h04/mnt/149263/domains/wer.com/html/application/controllers/post.php:301
Stack trace:
#0 /nfs/c10/h04/mnt/149263/domains/wer.com/html/application/controllers/post.php(301): Imagick->__construct('/home/149263/do...')
#1 [internal function]: Post->filter('punch')
#2 /nfs/c10/h04/mnt/149263/domains/wer.com/html/system/core/CodeIgniter.php(359): call_user_func_array(Array, Array)
#3 /nfs/c10/h04/mnt/149263/domains/wer.com/html/index.php(217): require_once('/nfs/c10/h04/mn...')
#4 {main} thrown in /nfs/c10/h04/mnt/149263/domains/wer.com/html/application/controllers/post.php on line 301

然而convert -list configure回报

DELEGATES     bzlib djvu fontconfig freetype gvc jpeg jp2 lcms openexr png rsvg tiff wmf x11 xml zlib

并identify -list format返回

JPEG* JPEG      rw-   Joint Photographic Experts Group JFIF format (62)
JPG* JPEG      rw-   Joint Photographic Experts Group JFIF format

所以看起来安装是正确的.

ImageMagick 6.7.7-0 2012-05-22 
imagick module version  3.1.0RC1

有任何建议如何解决这个问题？

Answer 1

在Ubuntu 12.04上安装最新版本(撰写本文时为6.8.4-6)ImageMagick,这是一个快速而又肮脏的问题.

首先删除以前通过apt-get安装的旧版本:

sudo apt-get删除imagemagick

然后更新apt-get并安装一些支持包:

sudo apt-get update
sudo apt-get install libperl-dev gcc libjpeg-dev libbz2-dev libtiff4-dev libwmf-dev libz-dev libpng12-dev libx11-dev libxt-dev libxext-dev libxml2-dev libfreetype6-dev liblcms1-dev libexif-dev perl libjasper-dev libltdl3-dev graphviz pkg-config

使用wget从ImageMagick.org获取源代码.

下载源后,解压缩它:

tar -xzf ImageMagick.tar.gz

现在配置并制作:

cd ImageMagick-6.8.4-6
./configure
sudo make
sudo make install

为了避免错误,例如:

convert: error while loading shared libraries: libMagickCore.so.2: cannot open shared object file: No such file or directory

将以下行添加到~/.bashrc:

export LD_LIBRARY_PATH=/usr/local/lib

更新:如果仍然出现上述错误,请尝试运行ldconfig:

sudo ldconfig

您可以使用以下命令确认安装和可用格式:

identify -list format