Port 8080 is already in use

IDE 프로세스 종료 문제로 8080 포트가 사용되지 않는 문제 발생

오류 메시지

2024-06-08T22:33:37.541+09:00 DEBUG 16974 --- [commute] [           main] o.s.b.d.LoggingFailureAnalysisReporter   : Application failed to start due to an exception

org.springframework.boot.web.server.PortInUseException: Port 8080 is already in use
	at org.springframework.boot.web.server.PortInUseException.lambda$throwIfPortBindingException$0(PortInUseException.java:70) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.server.PortInUseException.lambda$ifPortBindingException$1(PortInUseException.java:85) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.server.PortInUseException.ifCausedBy(PortInUseException.java:103) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.server.PortInUseException.ifPortBindingException(PortInUseException.java:82) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.server.PortInUseException.throwIfPortBindingException(PortInUseException.java:69) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:250) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:44) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:288) ~[spring-context-6.1.8.jar:6.1.8]
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:471) ~[spring-context-6.1.8.jar:6.1.8]
	at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:260) ~[spring-context-6.1.8.jar:6.1.8]
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:205) ~[spring-context-6.1.8.jar:6.1.8]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:981) ~[spring-context-6.1.8.jar:6.1.8]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:627) ~[spring-context-6.1.8.jar:6.1.8]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:456) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:335) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1363) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1352) ~[spring-boot-3.3.0.jar:3.3.0]
	at company.commute.CommuteApplication.main(CommuteApplication.java:9) ~[main/:na]
Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
	at org.apache.catalina.core.StandardService.addConnector(StandardService.java:222) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:310) ~[spring-boot-3.3.0.jar:3.3.0]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:236) ~[spring-boot-3.3.0.jar:3.3.0]
	... 15 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
	at org.apache.catalina.connector.Connector.startInternal(Connector.java:1047) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:171) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.catalina.core.StandardService.addConnector(StandardService.java:219) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	... 17 common frames omitted
Caused by: java.net.BindException: Address already in use
	at java.base/sun.nio.ch.Net.bind0(Native Method) ~[na:na]
	at java.base/sun.nio.ch.Net.bind(Net.java:555) ~[na:na]
	at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337) ~[na:na]
	at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294) ~[na:na]
	at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:239) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:194) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1286) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1372) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:635) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	at org.apache.catalina.connector.Connector.startInternal(Connector.java:1044) ~[tomcat-embed-core-10.1.24.jar:10.1.24]
	... 19 common frames omitted

2024-06-08T22:33:37.543+09:00 ERROR 16974 --- [commute] [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Web server failed to start. Port 8080 was already in use.

Action:

Identify and stop the process that's listening on port 8080 or configure this application to listen on another port.


Process finished with exit code 1

이미 사용 중인 8080 포트 종료하는 방법

• lsof: 현재 실행중인 프로세스를 확인한다.
• -n: 호스트네임을 제거한다.
• -i: IPv[46] 파일들을 선택한다.
• -P: 포트의 이름을 제거한다.

lsof -n -i -P | grep 8080
kill -9 [프로세스 번호]

 

정상적으로 8080 port로 작동한다.

2024-06-08T22:39:51.179+09:00  INFO 17141 --- [commute] [           main] 
o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port 8080 (http)