SpringApplicationRunListener(运行监听器)

1、spring.factories

# SpringApplicationRunListener
org.springframework.boot.SpringApplicationRunListener=
com.imooc.springapplication.run.HelloWorldSpringApplicationRunListener

2、HelloWorldSpringApplicationRunLIistener

package com.imooc.springapplication.run;
import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringApplicationRunListener;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
public class HelloWorldSpringApplicationRunListener implements SpringApplicationRunListener {
//构造器
public HelloWorldSpringApplicationRunListener(SpringApplication springApplication, String[] args){
}
@Override
public void starting(){
System.out.println("HelloWorld start run listener");
}
@Override
public void environmentPrepared(ConfigurableEnvironment environment){
}
@Override
public void contextPrepared(ConfigurableApplicationContext context){
}
@Override
public void contextLoaded(ConfigurableApplicationContext context){
}
@Override
public void started(ConfigurableApplicationContext context){
}
@Override
public void running(ConfigurableApplicationContext context){
}
@Override
public void failed(ConfigurableApplicationContext context, Throwable exception){
}
}

3、运行结果

HelloWorld start run listener
.
____
_
__ _ _
/\ / ___'_ __ _ _(_)_ __
__ _    
( ( )___ | '_ | '_| | '_ / _` |    
\/
___)| |_)| | | | | || (_| |
) ) ) )
'
|____| .__|_| |_|_| |___, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::
(v2.2.0.BUILD-SNAPSHOT)

最后

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