서블릿 컨테이너 초기화 2 강의 듣는 중..

다음과 같은 에러가 발생합니다.

"C:\Program Files\Java\jdk-17\bin\java.exe" -javaagent:C:\Users\Administrator\AppData\Local\JetBrains\Toolbox\apps\IDEA-C\ch-0\223.8836.41\lib\idea_rt.jar=58224:C:\Users\Administrator\AppData\Local\JetBrains\Toolbox\apps\IDEA-C\ch-0\223.8836.41\bin -Dfile.encoding=x-windows-949 -classpath C:\tool\tomcat-runner\tomcat-runner\bin\bootstrap.jar;C:\tool\tomcat-runner\tomcat-runner\bin\commons-daemon.jar;C:\tool\tomcat-runner\tomcat-runner\bin\tomcat-juli.jar;C:\tool\tomcat-runner\tomcat-runner\lib\annotations-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina-ant.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina-ha.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina-ssi.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina-storeconfig.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina-tribes.jar;C:\tool\tomcat-runner\tomcat-runner\lib\catalina.jar;C:\tool\tomcat-runner\tomcat-runner\lib\ecj-4.26.jar;C:\tool\tomcat-runner\tomcat-runner\lib\el-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\jakartaee-migration-1.0.6-shaded.jar;C:\tool\tomcat-runner\tomcat-runner\lib\jasper-el.jar;C:\tool\tomcat-runner\tomcat-runner\lib\jasper.jar;C:\tool\tomcat-runner\tomcat-runner\lib\jaspic-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\jsp-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\servlet-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-coyote.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-dbcp.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-cs.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-de.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-es.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-fr.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-ja.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-ko.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-pt-BR.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-ru.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-i18n-zh-CN.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-jdbc.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-jni.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-util-scan.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-util.jar;C:\tool\tomcat-runner\tomcat-runner\lib\tomcat-websocket.jar;C:\tool\tomcat-runner\tomcat-runner\lib\websocket-api.jar;C:\tool\tomcat-runner\tomcat-runner\lib\websocket-client-api.jar org.apache.catalina.startup.Bootstrap start

3월 19, 2023 5:15:29 오후 org.apache.catalina.core.StandardContext setPath

WARNING: 컨텍스트 경로는 반드시 빈 문자열이거나, 또는 '/'로 시작하고 '/'로 끝나지 않는 문자열이어야 합니다. 해당 경로 [/]은(는) 이 조건을 충족시키지 않아 [](으)로 변경되었습니다.

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 서버 버전 이름: Apache Tomcat/10.1.7

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: Server 빌드 시각: Feb 27 2023 20:25:27 UTC

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: Server 버전 번호: 10.1.7.0

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 운영체제 이름: Windows 11

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 운영체제 버전: 10.0

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 아키텍처: amd64

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 자바 홈: C:\Program Files\Java\jdk-17

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: JVM 버전: 17.0.6+9-LTS-190

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: JVM 벤더: Oracle Corporation

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: CATALINA_BASE: C:\tool\tomcat-runner\tomcat-runner

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: CATALINA_HOME: C:\tool\tomcat-runner\tomcat-runner

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 명령 행 아규먼트: -javaagent:C:\Users\Administrator\AppData\Local\JetBrains\Toolbox\apps\IDEA-C\ch-0\223.8836.41\lib\idea_rt.jar=58224:C:\Users\Administrator\AppData\Local\JetBrains\Toolbox\apps\IDEA-C\ch-0\223.8836.41\bin

3월 19, 2023 5:15:29 오후 org.apache.catalina.startup.VersionLoggerListener log

INFO: 명령 행 아규먼트: -Dfile.encoding=x-windows-949

3월 19, 2023 5:15:29 오후 org.apache.catalina.core.AprLifecycleListener lifecycleEvent

INFO: 프로덕션 환경들에서 최적의 성능을 제공하는, APR 기반 Apache Tomcat Native 라이브러리가, 다음 java.library.path에서 발견되지 않습니다: [C:\Program Files\Java\jdk-17\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Common Files\Oracle\Java\javapath;C:\oraclexe\app\oracle\product\11.2.0\server\bin;C:\Program Files (x86)\NAT Service;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\nodejs\;C:\Tools\jdk-16.0.1\bin;C:\Program Files\Git\cmd;C:\Program Files\MySQL\MySQL Shell 8.0\bin\;C:\Users\Administrator\AppData\Local\Microsoft\WindowsApps;C:\Users\Administrator\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\Administrator\AppData\Local\JetBrains\Toolbox\scripts;.]

3월 19, 2023 5:15:30 오후 org.apache.coyote.AbstractProtocol init

INFO: 프로토콜 핸들러 ["http-nio-8080"]을(를) 초기화합니다.

3월 19, 2023 5:15:30 오후 org.apache.catalina.startup.Catalina load

INFO: [366] 밀리초 내에 서버가 초기화되었습니다.

3월 19, 2023 5:15:30 오후 org.apache.catalina.core.StandardService startInternal

INFO: 서비스 [Catalina]을(를) 시작합니다.

3월 19, 2023 5:15:30 오후 org.apache.catalina.core.StandardEngine startInternal

INFO: 서버 엔진을 시작합니다: [Apache Tomcat/10.1.7]

3월 19, 2023 5:15:30 오후 org.apache.jasper.servlet.TldScanner scanJars

INFO: 적어도 하나의 JAR가 TLD들을 찾기 위해 스캔되었으나 아무 것도 찾지 못했습니다. 스캔했으나 TLD가 없는 JAR들의 전체 목록을 보시려면, 로그 레벨을 디버그 레벨로 설정하십시오. 스캔 과정에서 불필요한 JAR들을 건너뛰면, 시스템 시작 시간과 JSP 컴파일 시간을 단축시킬 수 있습니다.

MyContainerInitV1.onStartup

MyContainerInitV1 c = null

MyContainerInitV1 ctx = org.apache.catalina.core.ApplicationContextFacade@4c5474f5

MyContainerInitV2.onStartup

MyContainerInitV2 c = [class hello.container.AppInitV1Servlet, class hello.container.AppInitServlet]

MyContainerInitV2 ctx = org.apache.catalina.core.ApplicationContextFacade@4c5474f5

AppInitServlet.onStartup

AppInitServlet.onStartup

3월 19, 2023 5:15:30 오후 org.apache.catalina.core.ContainerBase startInternal

SEVERE: 자식 컨테이너를 시작 중 실패했습니다.

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:878)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:846)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:241)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:428)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:913)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.startup.Catalina.start(Catalina.java:795)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:568)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:347)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:478)

Caused by: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

... 21 more

Caused by: java.lang.RuntimeException: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:26)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4875)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

... 27 more

Caused by: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.AppInitServlet.onStartup(AppInitServlet.java:15)

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:24)

... 29 more

3월 19, 2023 5:15:30 오후 org.apache.catalina.core.ContainerBase startInternal

SEVERE: 자식 컨테이너를 시작 중 실패했습니다.

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 자식 컨테이너를 시작 중 실패했습니다.

at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:878)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:241)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:428)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:913)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.startup.Catalina.start(Catalina.java:795)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:568)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:347)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:478)

Caused by: org.apache.catalina.LifecycleException: 자식 컨테이너를 시작 중 실패했습니다.

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:890)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:846)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

... 13 more

Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:878)

... 21 more

Caused by: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

... 21 more

Caused by: java.lang.RuntimeException: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:26)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4875)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

... 27 more

Caused by: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.AppInitServlet.onStartup(AppInitServlet.java:15)

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:24)

... 29 more

3월 19, 2023 5:15:30 오후 org.apache.catalina.startup.Catalina start

SEVERE: 필수 항목인 서버 구성요소가 제대로 시작되지 못하여, Tomcat이 시작될 수 없습니다.

org.apache.catalina.LifecycleException: 자식 컨테이너를 시작 중 실패했습니다.

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:890)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:241)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:428)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:913)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.startup.Catalina.start(Catalina.java:795)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:568)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:347)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:478)

Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 자식 컨테이너를 시작 중 실패했습니다.

at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:878)

... 13 more

Caused by: org.apache.catalina.LifecycleException: 자식 컨테이너를 시작 중 실패했습니다.

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:890)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:846)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

... 13 more

Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:878)

... 21 more

Caused by: org.apache.catalina.LifecycleException: 구성요소 [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]을(를) 시작하지 못했습니다.

at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1332)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1322)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)

at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:871)

... 21 more

Caused by: java.lang.RuntimeException: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:26)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4875)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

... 27 more

Caused by: java.lang.NullPointerException: Cannot invoke "jakarta.servlet.ServletRegistration$Dynamic.addMapping(String[])" because "helloServlet" is null

at hello.container.AppInitServlet.onStartup(AppInitServlet.java:15)

at hello.container.MyContainerInitV2.onStartup(MyContainerInitV2.java:24)

... 29 more

3월 19, 2023 5:15:30 오후 org.apache.coyote.AbstractProtocol pause

INFO: 프로토콜 핸들러 ["http-nio-8080"]을(를) 일시 정지 중

3월 19, 2023 5:15:30 오후 org.apache.catalina.core.StandardService stopInternal

INFO: 서비스 [Catalina]을(를) 중지시킵니다.

3월 19, 2023 5:15:30 오후 org.apache.coyote.AbstractProtocol destroy

INFO: 프로토콜 핸들러 ["http-nio-8080"]을(를) 소멸시킵니다.

3월 19, 2023 5:15:30 오후 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesObjectStreamClassCaches

WARNING: Java 9 또는 이후 버전을 사용할 때에는, "--add-opens=java.base/java.io=ALL-UNNAMED" 을(를) JVM 명령행 아규먼트들에 추가해서, ObjectStream 캐시 메모리 릭 방지 옵션을 활성화할 필요가 있습니다. 또는 원하시는 경우, ObjectStream 클래스 캐시 메모리 릭 방지 옵션을 비활성화해서 이 경고 메시지를 없앨 수도 있습니다.

3월 19, 2023 5:15:30 오후 org.apache.catalina.loader.WebappClassLoaderBase checkThreadLocalsForLeaks

WARNING: ThreadLocal 메모리 누수 탐지를 위해서는 "--add-opens=java.base/java.lang=ALL-UNNAMED" 자바 명령 행 아규먼트를 추가하십시오. 또는 이 경고 메시지를 없애고 싶다면 ThreadLocal 메모리 누수 탐지 옵션을 비활성화 시키십시오.

3월 19, 2023 5:15:30 오후 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesRmiTargets

WARNING: Java 9에서 실행하면서 RMI Target 메모리 누수 탐지를 사용 가능하게 하려면, "--add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED"를 JVM 명령 행 아규먼트에 추가해야 합니다. 또는, RMI Target 메모리 누수 탐지를 사용불능 상태로 설정함으로써, 이 경고를 없앨 수도 있습니다.

Process finished with exit code 0