正则解析神器http://rick.measham.id.au/paste/explain.pl http://regexr.com/ http://regex101.com/ http://www.regexper.com/
ngx.re.match
http://blog.csdn.net/weiyuefei/article/details/38439017
ngx_lua_waf针对性改写
http://mp.weixin.qq.com/s?__biz=MzA4MDU0NzY4Ng==&mid=207396212&idx=1&sn=44d649db48c4f33b2e5f33e4d74bde5b#rd
WAF防火墙学习
原文：http://www.cnblogs.com/littlehb/p/5360418.html
