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Port ~ required by Tomcat v~ Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s). 본문
error
Port ~ required by Tomcat v~ Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).
chimy 2020. 10. 17. 23:20'Starting Tomcat v~ Server at localhost' has encountered a problem.
Port ~ required by Tomcat v~ Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).

이미 사용 중인 포트 번호를 사용하려고 할 때 발생하는 오류로 중복된 해당 포트번호를 바꿔주면 해결된다
해결1.

하단 Servers탭에서 해당 서버 더블클릭하여 상태 확인
※ Server 탭이 안보일 시
상단 메뉴 Window > Show View > Others... 클릭 후 servers 검색 Open

중복된 port number를 바꿔주면 해결
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