http://blog.csdn.net/chenxingzhen001/article/details/7708663 

http://blog.csdn.net/yangbutao/article/details/12242441/

http://www.oschina.net/question/12_414

http://blog.csdn.net/chinalinuxzend/article/details/1768860

http://www.360doc.com/content/14/0119/22/15109633_346516210.shtml

http://blog.itpub.net/29510932/viewspace-1664499/

原文：https://blog.csdn.net/l1028386804/article/details/49465289