StringSearch 规格严格

http://www.blogjava.net/changedi/archive/2012/12/29/333252.html#393611

http://en.wikipedia.org/wiki/String_searching_algorithm

http://johannburkard.de/software/stringsearch/

http://www.zhiwenweb.cn/Category/Security/1383.html

http://www.cnblogs.com/unhealthy/archive/2012/07/04/2576378.html