https://blog.csdn.net/cws1214/article/details/52151535
https://blog.csdn.net/Lujunwei0205/article/details/84101241
https://www.cnblogs.com/tongxuping/p/6891464.html
2020-04-15 09:37:02.473 INFO 13160 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-04-15 09:37:02.509 INFO 13160 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-04-15 09:37:02.510 INFO 13160 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.21]
2020-04-15 09:37:02.645 INFO 13160 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-04-15 09:37:02.645 INFO 13160 --- [ restartedMain] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1646 ms
init Filter ...
2020-04-15 09:37:02.852 INFO 13160 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
add interceptor...
2020-04-15 09:37:03.105 INFO 13160 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2020-04-15 09:37:03.156 INFO 13160 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-04-15 09:37:03.159 INFO 13160 --- [ restartedMain] hello.Application : Started Application in 2.588 seconds (JVM running for 3.44)
2020-04-15 09:37:07.625 INFO 13160 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-04-15 09:37:07.625 INFO 13160 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2020-04-15 09:37:07.634 INFO 13160 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 9 ms
before chain.doFilter(request, response) ...
preHandle
controller...
postHandle
afterCompletion
after chain.doFilter(request, response) ...