示意图
![[tomcat] log-AccessLog 请求流程_日志输出](/i/li/?n=2&i=images/blog/202301/07092346_63b8c9a2055183465.jpg?,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=,x-oss-process=image/resize,m_fixed,w_1184)
![[tomcat] log-AccessLog 请求流程_accessLog_02](/i/li/?n=2&i=images/blog/202301/07092346_63b8c9a20d09299412.jpg?,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=,x-oss-process=image/resize,m_fixed,w_1184)
简述
1. NioEndpoint 接收请求
2. Processor 的子类AbstractProcessorLight 处理请求
3. AbstractProcessorLight方法service请求
4. 请求失败触发CoyoteAdapter找到对应的container,
5. 通过ContainerBase找到该container关联的Values，有哪些values实现了AccessLog,将这些values填充到AcesslogAdapter
6. 通过AcesslogAdapter依次触发这些values的访问日志输出。
关键代码入口
1. 处理请求 org.apache.coyote.AbstractProcessorLight#process
2. coyoteAdapter 承接log任务 org.apache.catalina.connector.CoyoteAdapter#log 找到对应的container触发logAccess
3. org.apache.catalina.core.ContainerBase#logAccess
4. containerBase创建AccessLogAdapter和添加value org.apache.catalina.core.ContainerBase#getAccessLog
标签：AccessLog,catalina,container,请求,tomcat,AbstractProcessorLight,apache,org,log From： https://blog.51cto.com/u_15913327/5995409