public class JavaLibraryPath{
    public static void main(String[] args) throws Exception {
        System.out.println(System.getProperty("java.library.path"));
    }
}

3.执行：javac JavaLibraryPath.java

4.执行：java JavaLibraryPath可以看到如下内容

/usr/lib/jvm/jdk1.6.0_31/jre/lib/amd64/server:/usr/lib/jvm/jdk1.6.0_31/jre/lib/amd64:/usr/lib/jvm/jdk1.6.0_31/jre/../lib/amd64::/opt/pps/lib:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

5.请将 /usr/lib/jni/libJMagick.so 复制到上面打印现出来的任意目录，我是放在/usr/lib/下的

sudo cp /usr/lib/jni/libJMagick.so /usr/lib/

6.执行sudo chmod 755 /usr/lib/libJMagick.so