Spring boot内嵌服务器tomcat的启动过程

Spring boot内嵌服务器tomcat的启动过程

开始org.springframework.boot.SpringApplication#run(java.lang.Class<?>, java.lang.String...)

org.springframework.boot.SpringApplication#createApplicationContext

• org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext

• org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext

1. org.springframework.boot.SpringApplication#refreshContext

2. org.springframework.boot.SpringApplication#refreshContext

3. org.springframework.boot.SpringApplication#refresh

4. org.springframework.context.support.AbstractApplicationContext#refresh

5. org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#refresh

6. org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#onRefresh

   →createWebServer创建内嵌的tomcat web服务器

7. org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#finishRefresh

   启动服务器org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#startWebServer

   发布事件

   org.springframework.boot.web.servlet.context.ServletWebServerInitializedEvent#ServletWebServerInitializedEvent 主要用来获得本地端口

   增加 server.ports 属性源