ruby调用win32ole打开文件
http://www.iteye.com/topic/116850
http://lee2013.iteye.com/blog/1072869
详解：http://ilstar.blogbus.com/logs/56861313.html
http://www.iteye.com/topic/172213
生成pdfhttp://blog.sina.com.cn/s/blog_412d58ec010006ru.html