增加对script的验证

waf.lua

@@ -58,9 +58,9 @@ end
 
 
 -------对nginx的参数xss进行处理
-if "GET" == request_method then 
+if "GET" == ngx.var.request_method then 
     args = ngx.req.get_uri_args() 
-elseif "POST" == request_method then 
+elseif "POST" == ngx.var.request_method then 
     ngx.req.read_body() 
     args = ngx.req.get_post_args() 
 end