순수 jdbc 강의에서 H2 database적용 후, 회원목록 조... - 인프런

스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술

순수 JDBC

순수 jdbc 강의에서 H2 database적용 후, 회원목록 조회에서 Whitelabel 오류가 뜹니다.

해결된 질문

작성

1.1K

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.

1. 강의 내용과 관련된 질문을 남겨주세요.
2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.
(자주 하는 질문 링크: https://bit.ly/3fX6ygx)
3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.
(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)

질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.
=========================================
[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? (예/아니오)
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)
3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)

[질문 내용]
여기에 질문 내용을 남겨주세요.2023-12-27T19:46:31.932+09:00 ERROR 20716 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.IllegalStateException: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection] with root cause 강의를 따라하면서 진행하다가 페이지에서 회원목록으로 들어가면 Whitelabel 오류가 뜹니다. 혹시 위 오류가 어떤 이유에서 나는지 알 수 있을까요??

java spring mvc spring-boot

답변 3

OMG

안녕하세요. hgh1472님, 공식 서포터즈 OMG입니다.

프로젝트 코드 실행하였을 때 문제 없이 동작하였습니다. 따라서 코드 문제는 아닌 것으로 보입니다.

문제 발생이 예상되는 내용을 설명드리오니 확인 후 해결이 안될 경우 에러 메시지 전문을 댓글로 남겨주세요:)

h2가 정상적으로 실행중인지 확인해주세요.
h2에 MEMBER테이블을 생성하였는지 확인해주세요.
h2 연결을 다음과 같은 설정으로 하였는지 확인해주세요.

감사합니다.

hgh1472

질문자

h2는 localhost:8082로 접속하여 실행중입니다.

혹시 org.h2.Driver만 회색으로 되어있는데 이게 문제가 되나요??

hgh1472

질문자

에러 메시지는 다음과 같습니다

2023-12-27T20:40:38.827+09:00 ERROR 25920 --- [nio-8080-exec-2] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.

org.h2.jdbc.JdbcSQLNonTransientConnectionException: Connection is broken: "java.net.ConnectException: Connection refused: no further information: localhost" [90067-224]

at org.h2.message.DbException.getJdbcSQLException(DbException.java:690) ~[h2-2.2.224.jar:2.2.224]

at org.h2.message.DbException.getJdbcSQLException(DbException.java:489) ~[h2-2.2.224.jar:2.2.224]

at org.h2.message.DbException.get(DbException.java:212) ~[h2-2.2.224.jar:2.2.224]

at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:442) ~[h2-2.2.224.jar:2.2.224]

at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:330) ~[h2-2.2.224.jar:2.2.224]

at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:125) ~[h2-2.2.224.jar:2.2.224]

at org.h2.Driver.connect(Driver.java:59) ~[h2-2.2.224.jar:2.2.224]

at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:100) ~[HikariCP-5.0.1.jar:na]

at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-5.0.1.jar:na]

at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:160) ~[spring-jdbc-6.1.2.jar:6.1.2]

at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:118) ~[spring-jdbc-6.1.2.jar:6.1.2]

at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) ~[spring-jdbc-6.1.2.jar:6.1.2]

at hello.hellospring.repository.JdbcMemberRepository.getConnection(JdbcMemberRepository.java:112) ~[classes/:na]

at hello.hellospring.repository.JdbcMemberRepository.findAll(JdbcMemberRepository.java:70) ~[classes/:na]

at hello.hellospring.service.MemberService.findMembers(MemberService.java:37) ~[classes/:na]

at hello.hellospring.controller.MemberController.list(MemberController.java:37) ~[classes/:na]

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:262) ~[spring-web-6.1.2.jar:6.1.2]

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:190) ~[spring-web-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:917) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:829) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.2.jar:6.1.2]

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.2.jar:6.1.2]

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.17.jar:6.0]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.1.2.jar:6.1.2]

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.17.jar:6.0]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.2.jar:6.1.2]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.2.jar:6.1.2]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.2.jar:6.1.2]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.2.jar:6.1.2]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.2.jar:6.1.2]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.2.jar:6.1.2]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-10.1.17.jar:10.1.17]

at java.base/java.lang.Thread.run(Thread.java:842) ~[na:na]

Caused by: java.net.ConnectException: Connection refused: no further information

at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]

at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672) ~[na:na]

at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:547) ~[na:na]

at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:602) ~[na:na]

at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327) ~[na:na]

at java.base/java.net.Socket.connect(Socket.java:633) ~[na:na]

at org.h2.util.NetUtils.createSocket(NetUtils.java:135) ~[h2-2.2.224.jar:2.2.224]

at org.h2.util.NetUtils.createSocket(NetUtils.java:99) ~[h2-2.2.224.jar:2.2.224]

at org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:130) ~[h2-2.2.224.jar:2.2.224]

at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:438) ~[h2-2.2.224.jar:2.2.224]

... 67 common frames omitted

hgh1472

질문자

2023-12-27T20:40:38.834+09:00 ERROR 25920 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.IllegalStateException: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection] with root cause

java.net.ConnectException: Connection refused: no further information