springboot 啟動流程

public

(class<
?>
primarysources, string[
] args)

public

(resourceloader resourceloader, class<
?>..
. primarysources)

.. args)

, context)

;//方法，主要是呼叫所有初始化類的 #initialize(...) 方法//主要是給context屬性賦值

preparecontext

;refreshcontext

(context)

;//呼叫spring的refresh，並且會啟動tomcat（onrefresh）

afterrefresh

;//執行 spring 容器的初始化的後置邏輯。預設實現為空

stopwatch.

stop()

;if(this

.logstartupinfo)

listeners.

started

(context)

;callrunners;}

catch

(throwable ex)

trycatch

(throwable ex)

return context;

}

private configurableenvironment prepareenvironment

configurationpropertysources.
attach
(environment)
;return environment;
}

protected

void
}

private

void
refreshcontext
catch
(accesscontrolexception ex)
}//spring
refresh
(context)
;}

protected

void
onrefresh()
catch
(throwable ex)
}

private

void
createwebserver()
else
if(servletcontext != null)
initpropertysources()
;}

那麼servletwebserve***ctory 是什麼?

在這個介面下有一些例項，例如tomcat對應的例項tomcatservletwebserve***ctory，就是用來生產tomcat的物件

@override

public webserver getwebserver
(servletcontextinitializer.
.. initializers)
tomcat tomcat =
newtomcat()
;//建立tomcat
file basedir =
(this
.basedirectory != null)
?this
.basedirectory :
createtempdir
("tomcat");
tomcat.
setbasedir
(basedir.
getabsolutepath()
);connector connector =
newconnector
(this
.protocol)
;		connector.
setthrowonfailure
(true);
tomcat.
getservice()
.addconnector
(connector)
;customizeconnector
(connector)
;		tomcat.
setconnector
(connector)
;		tomcat.
gethost()
.setautodeploy
(false);
configureengine
(tomcat.
getengine()
);//！！
for(connector additionalconnector :
this
.additionaltomcatconnectors)
preparecontext
(tomcat.
gethost()
, initializers)
;return
gettomcatwebserver
(tomcat)
;//開啟tomcat
}

public

tomcatwebserver
(tomcat tomcat,
boolean autostart)

private

void
initialize()
throws webserverexception })
;// start the server to trigger initialization listeners
this
.tomcat.
start()
;		。。。。
}

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