안녕하세요여러개의 변수를 사용 할때는 @RequestParam으로 강의에서 알려 주신 것처럼 Map으로 List 형식으로 밖에 안되나요?감사합니다.

안녕하세요. 좋은 강의 만들어주셔서 감사합니다.강의 마지막 내용 중, A가 B에게 보낼 내용을 B의 공개키로 잠근 후 그 후에 A의 비밀키로 잠그면 B는 A의 공개키로 연 후에, B의 비밀키로 해당 문서를 복호화 하는 것까지는 이해했습니다. 여기서 궁금한 게 하나 생기는데, A의 공개키는 누구나 다운받을 수 있으니 해커도 다운받을 수 있으므로 A의 공개키로 해커가 복호화한 후 데이터를 날려버리고 새로운 데이터를 B에게 보낼 수 도 있는게 아닌가요?? 살짝 전의 내용에서 해커가 데이터를 가로채 데이터를 날려 새로운 데이터를 보낼 수 있다다는 것을 보고 궁금증이 생겼습니다.

main] org.hibernate.SQL : drop table if exists category CASCADE 이런 식으로 전부 다 main] org.hibernate.SQL 오류로 인해서 table 형태가 보이지 않아요..yml에 들어가보니 logging.level.org.hibernate.SQL: debug에 빨간불이 들어옵니다. 어떻게 하면 해결할 수 있을까요?

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. 포맷하고 자바 다 지워졌는데 스프링만 실행해도 작동이 잘되더라구요JDK설치 안하고 스프링으로 계속 돌리면 어떤점이 안좋나요?

13:41 부분에서 데이터를 끄집어 내서 파라미터 넣고 다 시 넣어줘야한다. 고 설명해주시는데요왜 이렇게 해야 하는건지 이해가 잘 안됩니다. 안해주면 어떤 문제가 발생하는지 궁금합니다.

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)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]수업자료 pdf 16~17 page에 나와있는 https://github.com/gavlyukovskiy/spring-boot-source-decorator 에서 이제 spring boot 3.0 지원한다고 하여 알려드립니다. (version: 1.9.0)

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예[질문 내용]안녕하세요. 상품 주문 Submit 시 오류가 발생하여 문의드립니다. 오류를 살펴보니, CASCDAE와 관련된 오류라고 하더라구요.. 기존 Order 도메인 클래스의 member 부분이 이렇게 선언이 되어 있었는데@ManyToOne(fetch = LAZY) @JoinColumn(name = "member_id") private Member member; 오류를 보고 나서 cascade = CascadeType.ALL 옵션을 추가해주니까 오류 없이 동작을 하긴 하는데 이게 맞나 싶어서 문의드립니다..@ManyToOne(fetch = LAZY, cascade = CascadeType.ALL) @JoinColumn(name = "member_id") private Member member; 발생 오류입니다.인텔리제이 콘솔에 찍힌 로그이고요..org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member at org.hibernate.engine.spi.CascadingActions$8.noCascade(CascadingActions.java:379) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:169) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:159) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:149) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:82) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:489) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3303) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2438) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ~[spring-orm-5.3.27.jar:5.3.27] at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) ~[spring-tx-5.3.27.jar:5.3.27] at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) ~[spring-tx-5.3.27.jar:5.3.27] at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654) ~[spring-tx-5.3.27.jar:5.3.27] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407) ~[spring-tx-5.3.27.jar:5.3.27] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.27.jar:5.3.27] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.27.jar:5.3.27] at jpabook.jpashop.service.OrderService$$EnhancerBySpringCGLIB$$c3aef6ec.order(<generated>) ~[classes/:na] at jpabook.jpashop.controller.OrderController.order(OrderController.java:42) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.27.jar:5.3.27] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.27.jar:5.3.27] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1072) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:965) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.27.jar:5.3.27] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.27.jar:5.3.27] at javax.servlet.http.HttpServlet.service(HttpServlet.java:555) ~[tomcat-embed-core-9.0.74.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.27.jar:5.3.27] at javax.servlet.http.HttpServlet.service(HttpServlet.java:623) ~[tomcat-embed-core-9.0.74.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.27.jar:5.3.27] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.27.jar:5.3.27] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.27.jar:5.3.27] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.27.jar:5.3.27] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.27.jar:5.3.27] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.27.jar:5.3.27] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:389) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.74.jar:9.0.74] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na] 웹 브라우저에 출력된 에러 페이지입니다.Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.Tue May 23 16:25:07 KST 2023There was an unexpected error (type=Internal Server Error, status=500).org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member; nested exception is java.lang.IllegalStateException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Memberorg.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member; nested exception is java.lang.IllegalStateException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:371) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:235) at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:566) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at jpabook.jpashop.service.OrderService$$EnhancerBySpringCGLIB$$c3aef6ec.order(<generated>) at jpabook.jpashop.controller.OrderController.order(OrderController.java:42) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1072) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:965) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:555) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:623) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:389) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.IllegalStateException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:151) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1411) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:489) at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3303) at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2438) at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ... 60 more Caused by: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : jpabook.jpashop.domain.Order.member -> jpabook.jpashop.domain.Member at org.hibernate.engine.spi.CascadingActions$8.noCascade(CascadingActions.java:379) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:169) at org.hibernate.event.internal.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:159) at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:149) at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:82) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) ... 69 more 작성한 코드도 올려두겠습니다.package jpabook.jpashop.controller; import jpabook.jpashop.domain.Member; import jpabook.jpashop.domain.item.Item; import jpabook.jpashop.service.ItemService; import jpabook.jpashop.service.MemberService; import jpabook.jpashop.service.OrderService; import lombok.RequiredArgsConstructor; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestParam; import java.util.List; @Controller @RequiredArgsConstructor public class OrderController { private final OrderService orderService; private final MemberService memberService; private final ItemService itemService; @GetMapping("/order") public String createForm(Model model){ List<Member> members = memberService.findMembers(); List<Item> items = itemService.findItems(); model.addAttribute("members", members); model.addAttribute("items", items); return "order/orderForm"; } @PostMapping("/order") public String order(@RequestParam("memberId") Long memberId, @RequestParam("itemId") Long itemId, @RequestParam("count") int count){ orderService.order(memberId, itemId, count); return "redirect:/orders"; } }package jpabook.jpashop.service; import jpabook.jpashop.domain.Delivery; import jpabook.jpashop.domain.Member; import jpabook.jpashop.domain.Order; import jpabook.jpashop.domain.OrderItem; import jpabook.jpashop.domain.item.Item; import jpabook.jpashop.repository.ItemRepository; import jpabook.jpashop.repository.MemberRepository; import jpabook.jpashop.repository.OrderRepository; import lombok.RequiredArgsConstructor; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; @Service @Transactional(readOnly = true) @RequiredArgsConstructor public class OrderService { private final OrderRepository orderRepository; private final MemberRepository memberRepository; private final ItemRepository itemRepository; //주문 @Transactional public Long order(Long memberId, Long itemId, int count){ /* 엔티티 조회 */ //회원 조회 Member member = memberRepository.findOne(memberId); //상품 조회 Item item = itemRepository.findOne(itemId); //배송정보 생성 Delivery delivery = new Delivery(); delivery.setAddress(member.getAddress()); //주문상품 생성 OrderItem orderItem = OrderItem.createOrderItem(item, item.getPrice(), count); //주문 생성 Order order = Order.createOrder(member, delivery, orderItem); //주문 저장 orderRepository.save(order); //주문 식별자 반환 (ID) return order.getId(); } //주문 취소 @Transactional public void cancelOrder(Long orderId){ // 주문 엔티티 조회 Order order = orderRepository.findOne(orderId); //주문 취소 order.cancel(); } /*//검색 public List<Order> findOrders(OrderSearch orderSearch){ return orderRepository.findAll(orderSearch); }*/ }package jpabook.jpashop.domain; import lombok.AccessLevel; import lombok.Getter; import lombok.NoArgsConstructor; import lombok.Setter; import org.aspectj.weaver.ast.Or; import javax.persistence.*; import java.time.LocalDateTime; import java.util.ArrayList; import java.util.List; import static javax.persistence.FetchType.LAZY; @Entity @Table(name = "orders") @Getter @Setter @NoArgsConstructor(access = AccessLevel.PROTECTED) public class Order { @Id @GeneratedValue @Column(name="order_id") private Long id; @ManyToOne(fetch = LAZY) @JoinColumn(name = "member_id") private Member member; @OneToMany(mappedBy = "order", cascade = CascadeType.ALL) private List<OrderItem> orderItems = new ArrayList<>(); @OneToOne(fetch = LAZY, cascade = CascadeType.ALL) @JoinColumn(name = "delivery_id") private Delivery delivery; private LocalDateTime orderDate; @Enumerated(EnumType.STRING) private OrderStatus status; //주문상태 [ORDER, CANCEL] //== 연관관계 메서드 ==/ //== 양방향 연관관계에서의 편의 메서드 ==/ public void setMember(Member member){ this.member = new Member(); member.getOrders().add(this); } public void addOrderItem(OrderItem orderItem){ orderItems.add(orderItem); orderItem.setOrder(this); } public void setDelivery(Delivery delivery){ this.delivery = delivery; delivery.setOrder(this); } //==생성 메서드==// public static Order createOrder(Member member, Delivery delivery, OrderItem... orderItems){ Order order = new Order(); order.setMember(member); order.setDelivery(delivery); for (OrderItem orderItem : orderItems){ order.addOrderItem(orderItem); } order.setStatus(OrderStatus.ORDER); order.setOrderDate(LocalDateTime.now()); return order; } //==비즈니스 로직==// /* * 주문 취소 * */ public void cancel(){ if(delivery.getStatus() == DeliveryStatus.COMP){ throw new IllegalStateException("이미 배송 완료된 상품은 취소가 불가능합니다."); } this.setStatus(OrderStatus.CANCEL); for (OrderItem orderItem : orderItems){ orderItem.cancel(); } } //==조회 로직==// /** * 전체 주문 가격 조회 */ public int getTotalPrice(){ int totalPrice = 0; for (OrderItem orderItem : orderItems){ totalPrice += orderItem.getTotalPrice(); } return totalPrice; } } package jpabook.jpashop.domain; import lombok.Getter; import lombok.Setter; import javax.persistence.*; import java.util.ArrayList; import java.util.List; @Entity @Getter @Setter public class Member { @Id @GeneratedValue @Column(name = "member_id") private Long id; private String name; @Embedded private Address address; @OneToMany(mappedBy = "member") private List<Order> orders = new ArrayList<>(); }

강의에서는 트랜잭션 내부호출을 해결하기 위해 클래스를 분리하여 외부에서 호출하는 방식으로 하셨는데 내부 호출을 하는 메소드에 @Transactional말고 호출을 하는 쪽에서 @Transactional을 설정하는 것은 어떻게 생각하시나요?정밀하게 트랜잭션이 적용되는 곳만 설정하는게 더 나은 방법일까요?

강의에 나온 테스트를 그대로 따라 진행하였는데, AutoAppConfigTest는 통과가 되었는데,CoreApplicationTests에서 에러가 두개가 나옵니다. Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberServiceImpl' defined in file [/Users/aiden/Desktop/CP/study/core/out/production/classes/hello/core/member/MemberServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'hello.core.member.MemberRepository' available: expected single matching bean but found 2: memoryMemberRepository,MemberRepositoryCaused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'hello.core.member.MemberRepository' available: expected single matching bean but found 2: memoryMemberRepository,MemberRepository 둘 에러 전부 memoryMemberRepository 와 MemberRepository와 관련있어보이는데 어떻게 해야할까요?

프론트에서 코드를 백으로 보내면 해당 코드로 at 를 받아서 유저 정보를 가져오고 싶은데 이렇게 하는게 가능한가요?

글 작성후, 추가한 내용 ) TimeTraceAop에서 @Arount(!target .. ) 부분에 패키지명(service)까지 추가해서 hello.hellospring.service.SpringConfig 로 수정했더니 실행이 되었습니다 !!@Component @Aspect public class TimeTraceAop { @Around("execution(* hello.hellospring..*(..)) && !target(hello.hellospring.service.SpringConfig)") public Object execute(ProceedingJoinPoint joinPoint) throws Throwable { .... } }  왜 패키지명을 추가했더니, 정상적으로 작동되는걸까요??SpringConfig를 제외하고 execution하라는 것 같은데, 경로를 못찾는거랑 관계가 있나요?? 저는 Error creating bean with name 'projectingArgumentResolverBeanPostProcessor 메시지를 보고스프링 빈이 안만들어져서 오류가 나는줄 알았거든요,,!! ㅜㅜㅎㅎㅎ   안녕하세요!AOP 적용 중에 아래와 같은 오류가 뜹니다근데 아무리 구글링 해봐도.. 이유를 모르겠습니다 Error creating bean with name 'projectingArgumentResolverBeanPostProcessor이 부분을 보고 projectingArgumentResolverBeanPostProcessor 빈이 안만들어졌다는건 알겠는데정확히 어느 부분 때문인지,그리고 해결방법이 어떻게되는지를 모르겠습니다  에러메시지 "C:\Program Files\Java\jdk-11\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.2\lib\idea_rt.jar=51347:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.2\bin" -Dfile.encoding=UTF-8 -classpath C:\study2\hello-spring\hello-spring\out\production\classes;C:\study2\hello-spring\hello-spring\out\production\resources;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-thymeleaf\2.7.11\e2d7ab403b2ab254e7706755a0158452e7a85463\spring-boot-starter-thymeleaf-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-web\2.7.11\c23ca827c1d5cf45d70f4b5204a9b889ec5d3b24\spring-boot-starter-web-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-data-jpa\2.7.11\43268b1cdb2711aef4563bc3ac1d2f8936527cd9\spring-boot-starter-data-jpa-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter\2.7.11\3b655d0b1817b5f92301d9da5eb9f8f8f37ded6a\spring-boot-starter-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.thymeleaf\thymeleaf-spring5\3.0.15.RELEASE\7170e1bcd1588d38c139f7048ebcc262676441c3\thymeleaf-spring5-3.0.15.RELEASE.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.thymeleaf.extras\thymeleaf-extras-java8time\3.0.4.RELEASE\36e7175ddce36c486fff4578b5af7bb32f54f5df\thymeleaf-extras-java8time-3.0.4.RELEASE.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-json\2.7.11\9f47d076fd9d1b2acec8d189e6413d3c5d270d30\spring-boot-starter-json-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-tomcat\2.7.11\d9d6f0e0aacd095bcae08bfbb72404ec114238e2\spring-boot-starter-tomcat-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework\spring-webmvc\5.3.27\8beabbb0cb64c448b39df790b62e342245ee7971\spring-webmvc-5.3.27.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework\spring-web\5.3.27\a51c45a8602052a2a90f7e645a47ba8df1547795\spring-web-5.3.27.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-aop\2.7.11\9b153237690b028c57f443aad49144e62dd2a8b5\spring-boot-starter-aop-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-jdbc\2.7.11\b502fe4cbdf3ec3b97d8cfd093becac0225eba48\spring-boot-starter-jdbc-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\jakarta.transaction\jakarta.transaction-api\1.3.3\c4179d48720a1e87202115fbed6089bdc4195405\jakarta.transaction-api-1.3.3.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\jakarta.persistence\jakarta.persistence-api\2.2.3\8f6ea5daedc614f07a3654a455660145286f024e\jakarta.persistence-api-2.2.3.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.hibernate\hibernate-core\5.6.15.Final\ab14b7cef1fdff654ca81923048a6034d6c7cfa7\hibernate-core-5.6.15.Final.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-jpa\2.7.11\3c97d46f1a4c664fd65b302bf0e0391cfebc0ce8\spring-data-jpa-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aspects\5.3.27\d6311337bd1eb60cb7da6f064c97c4b22a16497\spring-aspects-5.3.27.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-autoconfigure\2.7.11\d7b1b3a4c494e240ad0a53b2d6661982d7c9ddac\spring-boot-autoconfigure-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot\2.7.11\f99d0b98ecd8de1400dc47d00194202e9be5a16e\spring-boot-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-logging\2.7.11\b0d3e13291ecd5014d3c5f8818f50620f7b1f1fd\spring-boot-starter-logging-2.7.11.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\jakarta.annotation\jakarta.annotation-api\1.3.5\59eb84ee0d616332ff44aba065f3888cf002cd2d\jakarta.annotation-api-1.3.5.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.springframework\spring-core\5.3.27\ff5e35f2d4f72d22c476ff9b7bce1de25c980ebd\spring-core-5.3.27.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.yaml\snakeyaml\1.30\8fde7fe2586328ac3c68db92045e1c8759125000\snakeyaml-1.30.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.thymeleaf\thymeleaf\3.0.15.RELEASE\13e3296a03d8a597b734d832ed8656139bf9cdd8\thymeleaf-3.0.15.RELEASE.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.slf4j\slf4j-api\1.7.36\6c62681a2f655b49963a5983b8b0950a6120ae14\slf4j-api-1.7.36.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jsr310\2.13.5\8ba3b868e81d7fc6ead686bd2353859b111d9eaf\jackson-datatype-jsr310-2.13.5.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.module\jackson-module-parameter-names\2.13.5\a401a99e7a45450fd3ef76e82ba39005fd1a8c22\jackson-module-parameter-names-2.13.5.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jdk8\2.13.5\1278f38160812811c56eb77f67213662ed1c7a2e\jackson-datatype-jdk8-2.13.5.jar;C:\Users\Jung\.gradle\caches\modules-2\files-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les-2.1\ch.qos.logback\logback-core\1.2.12\1d8e51a698b138065d73baefb4f94531faa323cb\logback-core-1.2.12.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-api\2.17.2\f42d6afa111b4dec5d2aea0fe2197240749a4ea6\log4j-api-2.17.2.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\com.h2database\h2\2.1.214\d5c2005c9e3279201e12d4776c948578b16bf8b2\h2-2.1.214.jar;C:\Users\Jung\.gradle\caches\modules-2\files-2.1\com.sun.activation\jakarta.activation\1.2.2\74548703f9851017ce2f556066659438019e7eb5\jakarta.activation-1.2.2.jar hello.hellospring.HelloSpringApplication . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.7.11) 2023-05-23 10:58:10.603 INFO 9292 --- [ main] h.hellospring.HelloSpringApplication : Starting HelloSpringApplication using Java 11.0.18 on DESKTOP-70N8DCL with PID 9292 (C:\study2\hello-spring\hello-spring\out\production\classes started by Jung in C:\study2\hello-spring\hello-spring) 2023-05-23 10:58:10.611 INFO 9292 --- [ main] h.hellospring.HelloSpringApplication : No active profile set, falling back to 1 default profile: "default" 2023-05-23 10:58:11.973 INFO 9292 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2023-05-23 10:58:12.110 INFO 9292 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 114 ms. Found 1 JPA repository interfaces. 2023-05-23 10:58:12.862 WARN 9292 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'projectingArgumentResolverBeanPostProcessor' defined in class path resource [org/springframework/data/web/config/ProjectingArgumentResolverRegistrar.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: hello.hellospring.SpringConfig [Xlint:invalidAbsoluteTypeName] 2023-05-23 10:58:12.879 INFO 9292 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2023-05-23 10:58:12.928 ERROR 9292 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'projectingArgumentResolverBeanPostProcessor' defined in class path resource [org/springframework/data/web/config/ProjectingArgumentResolverRegistrar.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: hello.hellospring.SpringConfig [Xlint:invalidAbsoluteTypeName] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:537) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:270) ~[spring-context-5.3.27.jar:5.3.27] at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:764) ~[spring-context-5.3.27.jar:5.3.27] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:567) ~[spring-context-5.3.27.jar:5.3.27] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.11.jar:2.7.11] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731) ~[spring-boot-2.7.11.jar:2.7.11] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.11.jar:2.7.11] at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) ~[spring-boot-2.7.11.jar:2.7.11] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303) ~[spring-boot-2.7.11.jar:2.7.11] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292) ~[spring-boot-2.7.11.jar:2.7.11] at hello.hellospring.HelloSpringApplication.main(HelloSpringApplication.java:10) ~[classes/:na] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: hello.hellospring.SpringConfig [Xlint:invalidAbsoluteTypeName] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:628) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:91) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:111) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator.findCandidateAdvisors(AnnotationAwareAspectJAutoProxyCreator.java:92) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:101) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:255) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1160) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1135) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.27.jar:5.3.27] ... 14 common frames omitted Caused by: java.lang.IllegalArgumentException: warning no match for this type name: hello.hellospring.SpringConfig [Xlint:invalidAbsoluteTypeName] at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:319) ~[aspectjweaver-1.9.7.jar:na] at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:227) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.aspectj.AspectJExpressionPointcut.obtainPointcutExpression(AspectJExpressionPointcut.java:198) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:177) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:226) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:289) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:321) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:128) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:97) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:78) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:341) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:293) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:455) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1808) ~[spring-beans-5.3.27.jar:5.3.27] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.27.jar:5.3.27] ... 36 common frames omitted Process finished with exit code 1  TimeTraceAoppackage hello.hellospring.aop; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.springframework.stereotype.Component; @Component @Aspect public class TimeTraceAop { @Around("execution(* hello.hellospring..*(..)) && !target(hello.hellospring.SpringConfig)") public Object execute(ProceedingJoinPoint joinPoint) throws Throwable{ long start = System.currentTimeMillis(); System.out.println("START: " + joinPoint.toString()); try{ return joinPoint.proceed(); } finally { long finish = System.currentTimeMillis(); long timeMs = finish - start; System.out.println("END: " + joinPoint.toString() + " " + timeMs + "ms"); } } }  application.propertiesspring.datasource.url=jdbc:h2:tcp://localhost/~/test spring.datasource.driver-class-name=org.h2.Driver spring.datasource.username=sa spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=none spring.main.allow-bean-definition-overriding=true  SpringConfigpackage hello.hellospring.service; import hello.hellospring.aop.TimeTraceAop; import hello.hellospring.repository.JpaMemberRepository; import hello.hellospring.repository.MemberRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class SpringConfig { private final MemberRepository memberRepository; @Autowired public SpringConfig(MemberRepository memberRepository) { this.memberRepository = memberRepository; } @Bean public MemberService memberService(){ //return new MemberService(memberRepository()); // 이 로직을 호출해서 등록해줌 // memberService는 스프링 빈에 있는 memberRepository를 엮ㅇㅓ줘야 함. return new MemberService(memberRepository); } @Bean public TimeTraceAop timeTraceAop() { return new TimeTraceAop(); } /* @Bean public MemberRepository memberRepository(){ // return new JdbcMemberRepository(dataSource); // return new MemoryMemberRepository(); // return new JdbcTemplateMemberRepository(dataSource); // return new JpaMemberRepository(em); } */ }  MemberServicepackage hello.hellospring.service; import hello.hellospring.domain.Member; import hello.hellospring.repository.MemberRepository; import hello.hellospring.repository.MemoryMemberRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.List; import java.util.Optional; @Transactional public class MemberService { private final MemberRepository memberRepository; // MemberRepository를 내가 직접 생성하는게 아니라, 외부에서 넣어주도록 바꿔주기 // => dependency Injection 이라고 함. (DI) @Autowired public MemberService(MemberRepository memberRepository) { this.memberRepository = memberRepository; } /** * 회원 가입 */ public Long join(Member member) { // 같은 이름이 있는 중복 회원은 등록되지 않게 하는 비즈니스 로직 Long start = System.currentTimeMillis(); try { validateDuplicateMember(member); // 중복 회원 검증 memberRepository.save(member); // 검증 통과하면 저장 return member.getId(); } finally { long finish = System.currentTimeMillis(); long timeMs = finish - start; System.out.println("join = " + timeMs + "ms"); } } private void validateDuplicateMember(Member member) { memberRepository.findByName(member.getName()) // findByName을 하면 그 결과는 Optional. .ifPresent(m -> { throw new IllegalStateException("이미 존재하는 회원입니다."); // null이 아니라면, 위의 로직이 동작. 기존에는 if != null 이었겠지만 Optional로 감싸서 가능함 }); } /** * 전체 회원 조회 */ public List<Member> findMembers() { Long start = System.currentTimeMillis(); try { return memberRepository.findAll(); } finally { long finish = System.currentTimeMillis(); long timeMs = finish - start; System.out.println("findMembers " + timeMs + "ms"); } } public Optional<Member> findOne(Long memberId){ return memberRepository.findById(memberId); } }   

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)예3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)음..아니요[질문 내용]여기에 질문 내용을 남겨주세요.강의 9:32부분에서 에러가 나야되는데 spring2로 member1 이니까요,근데 저는 spring1도 초록불 save고spring2에서도 초록불이고심지어 spring21이여도 초록불이에요그 전까지는 강의 대로 결과가 나왔는데이건 아무리 바꿔도 결과가 강의랑 다르네요...어떻게 해야 에러가 뜰까요?????????????????save가 되면 안되는거잖아요....?  MemoryMemberRepositoryTest 코드도 복붙해여주석은 신경쓰지말고 봐주세여; 한곳 이해못한것있는데 제가 설명을 못알아들어서요 확인되시면 설명도 추가적으로 부탁드릴래요package hello.hellospring.repository;import hello.hellospring.domain.Member;import org.assertj.core.api.Assertions;import org.junit.jupiter.api.Test;import static org.assertj.core.api.Assertions.*;class MemoryMemberRepositoryTest {MemberRepository repository = new MemoryMemberRepository();@Testpublic void save() {Member member = new Member();member.setName("spring");repository.save(member);Member result = repository.findById(member.getId()).get(); //get:바로꺼내는게좋지는않지만테스트니ok//System.out.println("result = " + (result == member)); //이렇게 가져올수없으니assertThat(member).isEqualTo(result); //option + enter}@Testpublic void findByName() {Member member1 = new Member();member1.setName("spring1");repository.save(member1);Member member2 = new Member(); //shift + F6 중복이름 고칠때 같이 고쳐짐member2.setName("spring2");repository.save(member2);Member result = repository.findByName("spring1").get(); //한번까서?보낸다고요??이해못했음 <= 아, 이부분도 설명해주시면 좋을것같아용 히히assertThat(result).isEqualTo(member1);}}  

안녕하세요. 61강 spring security 환경설정 강의를 수강하면서 궁금한 점이 생겨 질문드립니다.  강사님께서 SecurityConfig.class 를 따로 메서드를 만들지 않고 getRootConfigClasses() 메서드에 함께 적어주신 이유가 있을까요?

안녕하세요, 강사님. 컨트롤러 코드 관련 질문입니다.작성한 코드는 컨트롤러의 메소드 반환 타입을 void로 해서 아무것도 반환하지 않는데요, 만약 postmapping 관련 메소드 작성 시, 작성한 게시글의 id값을 반환해주는 코드와 큰 차이가 있을까요?그리고 찾아보던 중, ResponseEntity를 사용해서 반환해주는 메소드를 보았는데, 메소드의 반환 타입에 따라 기능에 큰 차이가 있는지, 아니면 API 명세의 차이만 있고 기능에는 크게 차이가 없는지 궁금합니다!

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]본 강의 마지막 부분에 연관관계 편의 메서드를 만드는 부분이 있는데, 필드에 직접 접근하여 설정하는 내용이 있습니다. 예를들어 this.child.add(child);this.member = member;와 같은 코드들이 문제가 되지는 않겠지만 유지보수 측면에서 안 좋은 영향을 끼치는 것 같아서this.getChild().add(child);this.setMember(member);와 같이 리팩토링하는 것이 좋지 않나 궁금합니다.

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.안녕하세요.강의를 한 번 완주한 후 개별적으로 예제와 다르게 다시 공부하고 있는데 오류가 나서요..ㅜㅜhttps://drive.google.com/file/d/1Fe9hZbwSCKFYyQtmj_TU2Sl9VwqeXCsO/view?usp=sharing무엇 때문에 오류가 났는지 알 수 있을까요??  

ArgumentResolver는 컨버젼서비스를 통해 파라미터의 타입 변환을 하고메세지컨버터를 통해 Http 메시지 바디의 타입을 변환한다 라고 이해하면 될까요??

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][질문 : IntelliJ gutter Icon]1. 내용 : 개별 메서드 실행을 -> gutter icon을 눌러서 하고 싶은데. 보이지 않습니다. 2. 시도 : Settings -> Editor -> General -> Gutter Icons 선택3. 결과 : 여전히 Gutter Icon 안나옴

MemberTest에서 changeTeam메소드를 테스트 해보고 싶어서 추가로 코딩해서 실행해보았습니다.근데 System.out.println(member1.getTeam().getName()); System.out.println(teamB.getMembers().stream().collect(Collectors.toList()));위의 코드에는 반영이 되는 데 h2에 select문으로 member를 쿼리해보면 반영이 안되어있더라구요. 제가 공부한바로는 em.flush(), em.close 하면 db에 반영되는 걸로 이해하고 있는데... 잘못이해하고 있는 건가요??   

test를 junit의로 run 한 후에 다시 javaclass를 run할려고합니다. 근데 계속 javaclass 대신 test를 junit으로 run 하는데 이 환경을 어떻게 바꾸죠?