1.http://mysqlserverteam.com/innodb%E5%85%A8%E6%96%87%E7%B4%A2%E5%BC%95%EF%BC%9An-gram-parser/ 或者 http://www.actionsky.com/docs/archives/163
2.禁止的词汇:http://dev.mysql.com/doc/refman/5.7/en/fulltext-stopwords.html
http://www.coreseek.cn/news/10/99/