# tomcat access log config
server:
tomcat:
accesslog:
enabled: true #是否开启日志
directory: /tmp/accesslogs/mobile-site #日志存储目录
pattern: '%t %a %A %m %U%q %s %D %I %B' #日志格式
prefix: access #日志文件前缀
rename-on-rotate: true #是否启用日志轮转
pattern的配置：
- %a - Remote IP address，远程ip地址，注意不一定是原始ip地址，中间可能经过nginx等的转发
- %A - Local IP address，本地ip
- %b - Bytes sent, excluding HTTP headers, or ‘-’ if no bytes were sent
- %B - Bytes sent, excluding HTTP headers
- %h - Remote host name (or IP address if enableLookups for the connector is false)，远程主机名称(如果resolveHosts为false则展示IP)
- %H - Request protocol，请求协议
- %l - Remote logical username from identd (always returns ‘-’)
- %m - Request method，请求方法（GET，POST）
- %p - Local port，接受请求的本地端口
- %q - Query string (prepended with a ‘?’ if it exists, otherwise an empty string
- %r - First line of the request，HTTP请求的第一行（包括请求方法，请求的URI）
- %s - HTTP status code of the response，HTTP的响应代码，如：200,404
- %S - User session ID
- %t - Date and time, in Common Log Format format，日期和时间，Common Log Format格式
- %u - Remote user that was authenticated
- %U - Requested URL path
- %v - Local server name
- %D - Time taken to process the request, in millis，处理请求的时间，单位毫秒
- %T - Time taken to process the request, in seconds，处理请求的时间，单位秒
- %I - current Request thread name (can compare later with stacktraces)，当前请求的线程名，可以和打印的log对比查找问题
