在Ubuntu上安裝ImageMagick 和 JMagick

1. Install ImageMagick
sudo apt-get install imagemagick

2. Install JMagick
sudo apt-get install libjmagick6-java

3. Copy jmagick jars to your classpath
e.g. 
cp /usr/share/java/jmagick*.jar /usr/local/apache-tomcat-5.5.27/common/lib

4. Copy libJMagick.so to a folder listed in 'java.library.path'
copy /usr/lib/jni/libJMagick.so /usr/lib/
/* maybe you should change the permission of the so too */

sudo chmod 777 /usr/lib/libJMagick.so

關於第四個步驟, 是因為我在測試JMagick的時候出現了錯誤

java.lang.UnsatisfiedLinkError: no JMAgick in java.library.path.

結果列印了System.getProperty("java.library.path"), 裡面有/usr/lib, 而不是/usr/lib/jni.

所以需要把libJMagick.so複製到/usr/lib中去.