事件监听机制
配置在META-INF/spring.factories
ApplicationContextInitializer
SpringApplicationRunListener
ioc容器中的
ApplicationRunner
CommandLineRunner
测试
配置在META-INF/spring.factories
ApplicationContextInitializer
package com.spboot.springboot.listener;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
public class HelloApplicationContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
@Override
public void initialize(ConfigurableApplicationContext applicationContext) {
System.out.println("ApplicationContextInitializer...+initialize"+applicationContext);
}
}
SpringApplicationRunListener
package com.spboot.springboot.listener;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringApplicationRunListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
public class HelloSpringApplicationRunListener implements SpringApplicationRunListener {
//必须有的构造器
public HelloSpringApplicationRunListener(SpringApplication application, String[] args){
}
@Override
public void starting() {
System.out.println("SpringApplicationRunListener...starting...");
}
@Override
public void environmentPrepared(ConfigurableEnvironment environment) {
Object o = environment.getSystemProperties().get("os.name");
System.out.println("SpringApplicationRunListener...environmentPrepared.."+o);
}
@Override
public void contextPrepared(ConfigurableApplicationContext context) {
System.out.println("SpringApplicationRunListener...contextPrepared...");
}
@Override
public void contextLoaded(ConfigurableApplicationContext context) {
System.out.println("SpringApplicationRunListener...contextLoaded...");
}
@Override
public void started(ConfigurableApplicationContext context) {
System.out.println("SpringApplicationRunListener...started...");
}
@Override
public void running(ConfigurableApplicationContext context) {
System.out.println("SpringApplicationRunListener...running...");
}
@Override
public void failed(ConfigurableApplicationContext context, Throwable exception) {
System.out.println("SpringApplicationRunListener...failed...");
}
}
配置（META-INF/spring.factories）
org.springframework.context.ApplicationContextInitializer=
com.spboot.springboot.listener.HelloApplicationContextInitializer
org.springframework.boot.SpringApplicationRunListener=
com.spboot.springboot.listener.HelloSpringApplicationRunListener在ioc容器中
ApplicationRunner
package com.spboot.springboot.listener;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;
@Component
public class HelloApplicationRunner implements ApplicationRunner {
@Override
public void run(ApplicationArguments args) throws Exception {
System.out.println("ApplicationRunner...run....");
}
}
CommandLineRunner
package com.spboot.springboot.listener;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import java.util.Arrays;
@Component
public class HelloCommandLineRunner implements CommandLineRunner {
@Override
public void run(String... args) throws Exception {
System.out.println("CommandLineRunner...run..."+ Arrays.asList(args));
}
}
启动：
D:jobjavajdk1.8injava.exe -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=53220 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=localhost -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:jobIntelliJ IDEA 2018.3.3libidea_rt.jar=53221:D:jobIntelliJ IDEA 2018.3.3in" -Dfile.encoding=UTF-8 -classpath D:jobjavajdk1.8jrelibcharsets.jar;D:jobjavajdk1.8jrelibdeploy.jar;D:jobjavajdk1.8jrelibextaccess-bridge-64.jar;D:jobjavajdk1.8jrelibextcldrdata.jar;D:jobjavajdk1.8jrelibextdnsns.jar;D:jobjavajdk1.8jrelibextjaccess.jar;D:jobjavajdk1.8jrelibextjfxrt.jar;D:jobjavajdk1.8jrelibextlocaledata.jar;D:jobjavajdk1.8jrelibext
ashorn.jar;D:jobjavajdk1.8jrelibextsunec.jar;D:jobjavajdk1.8jrelibextsunjce_provider.jar;D:jobjavajdk1.8jrelibextsunmscapi.jar;D:jobjavajdk1.8jrelibextsunpkcs11.jar;D:jobjavajdk1.8jrelibextzipfs.jar;D:jobjavajdk1.8jrelibjavaws.jar;D:jobjavajdk1.8jrelibjce.jar;D:jobjavajdk1.8jrelibjfr.jar;D:jobjavajdk1.8jrelibjfxswt.jar;D:jobjavajdk1.8jrelibjsse.jar;D:jobjavajdk1.8jrelibmanagement-agent.jar;D:jobjavajdk1.8jrelibplugin.jar;D:jobjavajdk1.8jrelib
esources.jar;D:jobjavajdk1.8jrelib
t.jar;E:codespringbootspringboot-07 argetclasses;D:Apachemaven
epositoryorgspringframeworkootspring-boot-starter-web2.1.9.RELEASEspring-boot-starter-web-2.1.9.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot-starter2.1.9.RELEASEspring-boot-starter-2.1.9.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot2.1.9.RELEASEspring-boot-2.1.9.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot-autoconfigure2.1.9.RELEASEspring-boot-autoconfigure-2.1.9.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot-starter-logging2.1.9.RELEASEspring-boot-starter-logging-2.1.9.RELEASE.jar;D:Apachemaven
epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar;D:Apachemaven
epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;D:Apachemaven
epositoryorgapachelogginglog4jlog4j-to-slf4j2.11.2log4j-to-slf4j-2.11.2.jar;D:Apachemaven
epositoryorgapachelogginglog4jlog4j-api2.11.2log4j-api-2.11.2.jar;D:Apachemaven
epositoryorgslf4jjul-to-slf4j1.7.28jul-to-slf4j-1.7.28.jar;D:Apachemaven
epositoryjavaxannotationjavax.annotation-api1.3.2javax.annotation-api-1.3.2.jar;D:Apachemaven
epositoryorgyamlsnakeyaml1.23snakeyaml-1.23.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot-starter-json2.1.9.RELEASEspring-boot-starter-json-2.1.9.RELEASE.jar;D:Apachemaven
epositorycomfasterxmljacksoncorejackson-databind2.9.9.3jackson-databind-2.9.9.3.jar;D:Apachemaven
epositorycomfasterxmljacksoncorejackson-annotations2.9.0jackson-annotations-2.9.0.jar;D:Apachemaven
epositorycomfasterxmljacksoncorejackson-core2.9.9jackson-core-2.9.9.jar;D:Apachemaven
epositorycomfasterxmljacksondatatypejackson-datatype-jdk82.9.9jackson-datatype-jdk8-2.9.9.jar;D:Apachemaven
epositorycomfasterxmljacksondatatypejackson-datatype-jsr3102.9.9jackson-datatype-jsr310-2.9.9.jar;D:Apachemaven
epositorycomfasterxmljacksonmodulejackson-module-parameter-names2.9.9jackson-module-parameter-names-2.9.9.jar;D:Apachemaven
epositoryorgspringframeworkootspring-boot-starter-tomcat2.1.9.RELEASEspring-boot-starter-tomcat-2.1.9.RELEASE.jar;D:Apachemaven
epositoryorgapache omcatembed omcat-embed-core9.0.26 omcat-embed-core-9.0.26.jar;D:Apachemaven
epositoryorgapache omcatembed omcat-embed-el9.0.26 omcat-embed-el-9.0.26.jar;D:Apachemaven
epositoryorgapache omcatembed omcat-embed-websocket9.0.26 omcat-embed-websocket-9.0.26.jar;D:Apachemaven
epositoryorghibernatevalidatorhibernate-validator6.0.17.Finalhibernate-validator-6.0.17.Final.jar;D:Apachemaven
epositoryjavaxvalidationvalidation-api2.0.1.Finalvalidation-api-2.0.1.Final.jar;D:Apachemaven
epositoryorgjbossloggingjboss-logging3.3.3.Finaljboss-logging-3.3.3.Final.jar;D:Apachemaven
epositorycomfasterxmlclassmate1.4.0classmate-1.4.0.jar;D:Apachemaven
epositoryorgspringframeworkspring-web5.1.10.RELEASEspring-web-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-beans5.1.10.RELEASEspring-beans-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-webmvc5.1.10.RELEASEspring-webmvc-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-aop5.1.10.RELEASEspring-aop-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-context5.1.10.RELEASEspring-context-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-expression5.1.10.RELEASEspring-expression-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgslf4jslf4j-api1.7.28slf4j-api-1.7.28.jar;D:Apachemaven
epositoryorgspringframeworkspring-core5.1.10.RELEASEspring-core-5.1.10.RELEASE.jar;D:Apachemaven
epositoryorgspringframeworkspring-jcl5.1.10.RELEASEspring-jcl-5.1.10.RELEASE.jar com.spboot.springboot.Springboot07Application
SpringApplicationRunListener...starting...
SpringApplicationRunListener...environmentPrepared..Windows 7
. ____ _ __ _ _
/\ / ___'_ __ _ _(_)_ __ __ _
( ( )\___ | '_ | '_| | '_ / _` |
\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.9.RELEASE)
ApplicationContextInitializer...+initializeorg.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3c87521, started on Thu Jan 01 08:00:00 CST 1970
SpringApplicationRunListener...contextPrepared...
2019-10-07 19:22:17.554 INFO 2992 --- [ main] c.s.springboot.Springboot07Application : Starting Springboot07Application on jitp with PID 2992 (E:codespringbootspringboot-07 argetclasses started by Administrator in E:codespringbootspringboot-07)
2019-10-07 19:22:17.557 INFO 2992 --- [ main] c.s.springboot.Springboot07Application : No active profile set, falling back to default profiles: default
SpringApplicationRunListener...contextLoaded...
2019-10-07 19:22:18.869 INFO 2992 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2019-10-07 19:22:18.893 INFO 2992 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-10-07 19:22:18.893 INFO 2992 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.26]
2019-10-07 19:22:18.978 INFO 2992 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-10-07 19:22:18.978 INFO 2992 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1373 ms
2019-10-07 19:22:19.168 INFO 2992 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-10-07 19:22:19.328 INFO 2992 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2019-10-07 19:22:19.331 INFO 2992 --- [ main] c.s.springboot.Springboot07Application : Started Springboot07Application in 2.192 seconds (JVM running for 3.262)
SpringApplicationRunListener...started...
ApplicationRunner...run....
CommandLineRunner...run...[]
SpringApplicationRunListener...running...