其中 (%{WORD:x_forword}|-) |表示或的意思

121.40.205.143 [30/Aug/2016:14:03:08 +0800] "GET /resources/images/favicon.ico HTTP/1.1" - 200 4286 "https://uatest.winfae.com/products/productList.html" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.87 Safari/537.36" 0.000 -


%{IPORHOST:clientip} [%{HTTPDATE:time}] "%{WORD:verb} %{URIPATHPARAM:request} HTTP/%{NUMBER:httpversion}" - %{NUMBER:http_status_code} %{NUMBER:bytes} "(?<http_referer>S+)" "(?<http_user_agent>(S+s+)*S+)" (%{BASE16FLOAT:request_time}) (%{WORD:x_forword}|-)

其中 (%{WORD:x_forword}|-) |表示或的意思