springboot启动原理

factory.getWebServer(getSelfInitializer())

prepareEnvironment

ServletRegistrationBean.addRegistration

DynamicRegistrationBean.register

beans.onStartup(servletContext)

AnnotationConfigServletWebServerApplicationContext

new SpringApplication(primarySources)

registration.addMapping(urlMapping)

ApplicationContextInitializer

TomcatServletWebServerFactory.getWebServer

RegistrationBean.onStartup

ServletWebServerApplicationContext.refresh

getTomcatWebServer(tomcat)

refreshContext

onRefresh

createApplicationContext()

SpringApplication.run

prepareContext

tomcat.getServer().await()

bindToSpringApplication(environment)

startDaemonAwaitThread()

ServletRegistrationBean.configure

ApplicationListener

回调

getSelfInitializer()

this.annotatedReader.register(source)

getSpringFactoriesInstances

tomcat.start()

load(Class<?> source)

Tomcat tomcat = new Tomcat();

加载META-INF/spring.factories里的配置类