spring-boot启动流程

TomcatServletWebServerFactory#getWebServer

SpringApplicationRunListeners#started

ServletWebServerApplicationContext#onRefresh

启动类

SpringApplicationRunListeners#starting

TomcatServletWebServerFactory#getTomcatWebServer

ApplicationEnvironmentPreparedEvent

SpringApplicationRunListeners#running

加载所有spring.factories中的ApplicationContextInitializer

SpringApplication#getRunListeners

往容器中添加优雅关机WebServerGracefulShutdownLifecycle

SpringApplication#afterRefresh

如需在spring Refresh前生效则需配置在spring.factories中

SpringApplication#prepareContext

ServletWebServerApplicationContext#getWebServerFactory

SpringApplication#callRunners

SpringApplicationRunListeners#environmentPrepared

发布事件

Tomcat

加载所有spring.factories中的ApplicationListener

调用spring.factories中配置的ApplicationContextInitializer

SpringApplication#run(java.lang.String...)

ServletWebServerApplicationContext#createWebServer

SpringApplication#prepareEnvironment

SpringApplication#refreshContext

setInitializers

SpringApplication#printBanner

加载配置文件，包括spring-cloud的配置文件

SpringApplication#createApplicationContext

TomcatWebServer#initialize

setListeners

加载所有spring.factories中的SpringApplicationRunListener