인프런 커뮤니티 질문&답변

java -jar embed-0.0.1-SNAPSHOT.jar 시

아래와 같이 에러가 발생하는 경우

org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@247bddad]
        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:923)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:886)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1393)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1383)
        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:916)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:252)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:430)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:926)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.startup.Tomcat.start(Tomcat.java:485)
        at hello.embed.EmbedTomcatSpringMain.main(EmbedTomcatSpringMain.java:36)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@247bddad]
        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.StandardContext.resourcesStart(StandardContext.java:4829)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4962)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1393)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1383)
        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:916)
        ... 16 more
Caused by: java.lang.IllegalArgumentException: The main resource set specified [C:\embed\build\libs\tomcat.8080\webapps\] is not valid
        at org.apache.catalina.webresources.StandardRoot.createMainResourceSet(StandardRoot.java:777)
        at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:734)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        ... 25 more

main 클래스에 코드를 수정하면 정상적으로 에러가 발생하지 않습니다.

public class EmbedTomcatSpringMain {

	public static void main(String[] args) throws LifecycleException, IOException {
		System.out.println("EmbedTomcatSpringMain.main");

		// 톰캣 설정
		// 톰캣 설정
		Tomcat tomcat = new Tomcat();
		...

		// 스프링 MVC 디스패처 서블릿 생성, 스프링 컨테이너 연결
		...


		String docBase = Files.createTempDirectory("tomcat-basedir").toString();

		// 디스패처 서블릿 등록
		Context context = tomcat.addContext("", docBase);


		...
		tomcat.start();
	}
}

참고)
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윈도우에서 나타나는 에러를 공유드렸습니다.

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