http://blog.csdn.net/csapr1987/article/details/7728315
https://zhidao.baidu.com/question/1383738722237041300.html
http://stackoverflow.com/questions/26738828/ioerror-cannot-open-resource
实现windows和xshell中互传文件的方法：
http://www.linuxdiyf.com/linux/12334.html