회원 가입 시 DB에 정상적으로 회원 정보가 생성은 되는데 이 후 로그인 시도 시  CustomAuthenticationProvider에서 userDetailsService.loadUserByUsername(username); 수행 시 Null을 반환합니다. java.lang.NullPointerException: Cannot invoke "io.security.corespringsecurity.security.service.CustomUserDetailsService.loadUserByUsername(String)" because "this.userDetailsService" is null at io.security.corespringsecurity.security.provider.CustomAuthenticationProvider.authenticate(CustomAuthenticationProvider.java:26) ~[classes/:na]

[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]안녕하세요. 김영한님의 스프링, 스프링부트 강의를 정말 재밌게 듣고 있는 한 대학생입니다. 강의를 듣던 중에 공부방향에 대해서 궁금한 것이 생겼는데요.이번 웹 계층 개발 파트에서는 특히 js나 css에 대한 내용들이 thymleaf와 함께 많이 다루어지는 것 같습니다.물론 기본적인 html태그들은 그냥 자주 보다보면 외워지겠지만 이런 부분들을 본격적으로 따로 공부할 필요가 있는지 궁금합니다. 나중에 실무에서 제가 DB설계를 하고 도메인, 서비스 계층을 짜는 것은 상상이 되고 지금 공부하고 있는 방향과도 맞는 것 같아서 재밌을 것 같은데,이런 프론트적인 부분? 은 그냥 복붙하고 넘기면 되는지, 아니면 실무에서 제가 실제로 다루게 될 부분일지 경계가 모호한 것 같습니다.정리하자면, 1. 실무에서 백엔드 개발자는 어떤 일을 주로 맡게 되는지, 2. 그래서 이번 웹 계층 파트에서 다루어지는 thymleaf나 js,css, html 내용을 본격적으로 공부해야 하는지 궁금합니다.

[질문 내용]회원서비스개발에서 2:18에1. 무슨 단축키를 누르면 Optional<Member> byName = 이 뜨나요? 저는 그냥 타이핑했는데 어떻게 하면 그렇게 생기죠?2.그리고 단축키 command option v 로 byName을 result로 변경했는데 그것도 단축키를 하면 왜 단축키를 했을 때 수업처럼 옵션이 안뜰까요 3.Optional<Member> byName = 부분 지우고result부분 지우고 코드 정리했을 때 저는.ifPresent부분이 에러가 납니다.4.강의에 4:56 부분 control + t 로 method입력해서 Extract Method 가 뜨는데 저는 안뜹니다.command option m 단축키로 Extract Method를 시도했는데 사용할수없다는데..어떻게해야되나요확인부탁드릴게요...

안녕하세요 강사님. 강의를 따라 실습하는데 강사님과 다르게 동작합니다. 이유를 못찾아서 도움이 필요합니다 ㅠㅠ7) Ajax로그인 구현 & CSRF설정 15:00 부분강의에서는 브라우저에서 window.location = '/api/login?error=true&exception=' + xhr.responseJSON.message;호출이후 서버에서 로그인 컨트롤러가 호출되는데,저는 window.location 이후 AjaxLoginAuthenticationEntryPoint 가 다시 호출됩니다.그래서 AjaxSecurityConfig 클래스에 .antMatchers("/api/login/**").permitAll() 를 추가해서 테스트 해보았더니 컨트롤러가 호출 되었습니다.왜 강사님과 다르게 저는 window.location 이후 AjaxLoginAuthenticationEntryPoint가 왜 다시 호출되는지 알 수 있을까요?https://github.com/GwanUk/basicsecurity.git

선생님 안녕하세요!스트림 강의를 듣다가 람다식 부분이 이해가 되지 않아 질문 드립니다!아래 3 번째 줄, .filter(x -> x>=90) 부분이 이해가 잘 되지 않는데요.int[] scores = {100, 95, 90, 85, 80}; Arrays.stream(scores) .filter(x -> x>= 90) .forEach(x -> System.out.println(x)); // 100, 95, 90 화살표 왼쪽 X 는, scores 변수 값들을 의미 하는 걸까요?화살표 오른쪽 X 는, return x >= 90 과 같다고 이해하면 될까요?그러면 return 된 값은 어디로 저장이 되는 걸까요? 흑흑. 람다식 너무 어렵습니다 😢 

매니저 권한으로 로그인하지 않아도 매니저 권한자원에 접근이 가능한데 이유를 모르겠습니다 ㅠㅠhttps://github.com/whitewise95/springSecurity 입니다 ㅠㅠ  

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?

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<>(); }

안녕하세요. 김태원 강사님![질문]입력예제 설명에 오타가 있는 것 같아서 확인 차 문의드립니다.[문제]3.자료구조 활용 챕터에 5번 cpu스케쥴링문제입력예제 1번 설명 :1초에 1번 작업을 실행해서 3초에 끝냅니다.3초에 3번 작업을 실행해서 4초에 끝냅니다.4초에 2번 작업을 실행해서 6초에 끝냅니다.-> (확인필요) 4초에 0번 작업을 실행해서 7초에 끝냅니다.6초에 0번 작업을 실행해서 9초에 끝냅니다.-> (확인필요) 8초에 2번 작업을 실행해서 10초에 끝냅니다. [요청]입력예제 1번 설명에 '(확인필요)표시한 부분의 설명'이 맞는 지 답변 부탁드립니당! ps. 코딩테스트 준비가 막막했는데 강사님의 좋은 강의 덕분에 준비할 수 있게 되어서 너무 감사합니다 :)

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); } }   

안녕하세요, 준영속을 공부하다가 궁금한것이 생겼는데 혹시 실무에서 준영속 상태를 사용하는 경우는 어떤 경우인지 알 수 있을까요?

[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);}}  

Can't determine type for tag '<macro name="m3_comp_assist_chip_container_shape">?attr/shapeAppearanceCornerSmall</macro>' 이라는 에러가 납니다. 그래서 안드로이드 스튜디오를 지우고 설치하기를 몇번이나 했는데 해결이 도저히 안됩니다.

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??  

 이전 제네릭스 강의에서 int[ ] iArray 는 Integer[ ] iArray로 wrapper해야 printAnyArray(iArray)로 호출이 가능하다고 하셨는데 이번 강의에서 orderCoffee(35); 호출시에는 이런 wrapper 과정이 없이 기본자료형인 int 숫자가 들어갈 수 있는 이유가 궁금합니다.이와 비슷한 다른 질문을 보고 개인적으로 유추해봤을땐 제네릭메소드 호출시 숫자를 Integer로 자동으로 래핑되서 가능한 것 같은데 그러면 iArray를 호출시에는 왜 알아서 wrapper가 안되서 오류가 뜬 건지 질문드립니다.