https://tomcat.apache.org/tomcat-8.5-doc/config/valve.html#Access_Log_Valve/Introduction
/usr/local/tomcat8.5/conf/docs/config/valve.html
pattern="%h %l %u %t "%r" %s %b"
pattern="%a %t %m %U %s %B %T"
Tomcat服务器日志输出格式设置_Baishu的专栏-CSDN博客_tomcat日志格式
https://blog.csdn.net/sinat_32660629/article/details/79805404
tomcat 日志详解 - 自由早晚乱余生 - 博客园
https://www.cnblogs.com/operationhome/p/9680040.html