선생님 안녕하세요 질문을 드리기 전에 스프링과 POJO에 대해 많이 찾아보고 고민했는데, 제가 제대로 이해한 게 맞는지 질문드리고 싶습니다.저는 스프링이 POJO를 지향하는 프레임워크인 이유를 이렇게 이해했습니다.엄밀히 말하면 DTO, VO처럼 인터페이스를 구현하지 않고 상위 클래스를 상속받지 않는 클래스들이 POJO라고 할 수 있습니다.그러나 컨트롤러 클래스는 @Controller라는 어노테이션이 필요하기에, 스프링이라는 프레임워크에 종속된 기술이며, 서비스 클래스도 인터페이스(PSA)를 구현하기에 엄밀히는 POJO가 아닙니다.그렇지만 POJO를 지향하는 이유가 결합도를 낮추고, 응집도를 높여 환경변화를 적게 받고 특정 기술에 종속되지 않기 위한 목적이 있습니다.비록 컨트롤러 클래스와 서비스 클래스는 POJO라고 할 수는 없지만, 최대한 POJO에 가깝게 결합도를 낮추고 응집도를 높여서 재사용성을 높이기 위해 DI, AOP, PSA 를 사용했습니다.즉, 완전한 POJO를 구현한 프레임워크는 아니지만, POJO를 지향하여 최대한 모듈 간 결합도를 낮추고 응집도를 높이고 재사용성을 높인 프레임워크라고 이해했습니다.혹시 제가 제대로 이해했는지 봐주시면 감사하겠습니다.

안녕하세요! 강의를 듣다가 궁금한 것이 생겨 질문 남깁니다 :) 찾아보니까 Spring 에서는 기본적으로 다이나믹 프록시를 사용하고, Spring Boot 에서는 기본적으로 CGLIB 사용으로 바뀌었다고 나와있습니다! Spring Boot 에서 Spring Data JPA 를 사용하여 Repository를 만들 때는 인터페이스 기반이기 때문에 디폴트 설정인 CGLIB 대신 다이나믹 프록시를 사용하는 것으로 이해했는데 맞을까요?!

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]자바 기본 문법 중 iterator와 forEachRemaining을 사용하신 것 같은데, 왜 이러한 문법을 사용하셨는지?forEachRemaing 문의 람다식은 무엇을 의미하는지?궁금합니다.

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 3. 질문 잘하기 메뉴얼을 읽어보셨나요? [질문 내용]JPARepository 를 상속받는 SpringDataJpaMemeberRepository 의 오버라이딩 함수를 사용하려면 Repository 를 주입하는 Config 에서 부터 시작해서 주입된 서비스 에서 까지 소스를 전부 SpringDataJpaMemeberRepository 를 주입받도록 수정해주어야 사용이 가능하지 않은가요?기존 소스 변경없이 모두 MemberRepository 만 사용하던데, 그러면 JpaRepository 를 확장하는 인터페이스의 이점을 살리지 못하는게 아닌가 궁금합니다

p6spy releases를 확인해보면 1.9.0부터 Spring boot 3을 지원한다고 되어있고 테스트시 로그가 안뜹니다. 다른 질문에서보니 해당 버전이 메이븐에서만 지원되어서 그런 듯 합니다.그래서 바로 아래 버전인 1.8.1을 사용해서 정상적으로 로그가 뜨는 것을 확인했습니다.그래서 앞으로 최신 버전으로 했을때 안뜬다면 버전을 내려보시면 좋을 것 같습니다.

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.[질문 내용]위의 코드에서 생성자를 설정해 주지 않으면 빨간색 오류가 뜨는데, memberRepository가 초기화되지 않아서라고 합니다. 여기서 궁금한 점이 필드만 있으면 생성자를 따로 코드로 쳐주지 않아도 자동으로 기본 생성자 설정을 해주지 않나요?    아래 사진에서는 example클래스에서 필드만 넣어줘도 빨간색 줄이 뜨지 않는데 ... 둘의 차이를 모르겠습니다.

private static void modelToRequestAttribute(Map<String, Object> model, HttpServletRequest request) { //request에 member저장 model.forEach((String, Object) -> request.setAttribute(String,Object)); System.out.println("modelToRequestAttribute model = " + model.get("model")); }이 코드에서요model.forEach((String, Object) -> request.setAttribute(String,Object));여기서 MemberSaveControllerV3 클래스가 실행된다면String에는 "member" Object에는 member객체가 들어가게 될텐데요 member객체가 루프를 돈다고하면String username = paramMap.get("username"); int age = Integer.parseInt(paramMap.get("age"));member객체에 저장된 이 2개의 변수가 루프를 도는게 맞을까요?

@QueryHints(value = @QueryHint(name = "org.hibernate.readOnly", value = "true")) @Override Optional<Member> findById(Long aLong);위와 같이 SimpleJpaRepository의 findById를 오버라이딩 할 경우 오류가 발생합니다.JpaRepository의 메소드를 오버라이드 하여서 적용할 수 없는건지 궁금합니다.다음은 오류의 내용입니다.org.springframework.dao.InvalidDataAccessApiUsageException: class java.lang.String cannot be cast to class java.lang.Boolean (java.lang.String and java.lang.Boolean are in module java.base of loader 'bootstrap'); nested exception is java.lang.IllegalArgumentException: class java.lang.String cannot be cast to class java.lang.Boolean (java.lang.String and java.lang.Boolean are in module java.base of loader 'bootstrap') at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:374) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:235) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551) at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:241) at com.sun.proxy.$Proxy132.findById(Unknown Source) at study.datajpa.MemberRepositoryTest.queryHint(MemberRepositoryTest.java:318) 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.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) Suppressed: org.springframework.transaction.UnexpectedRollbackException: Transaction silently rolled back because it has been marked as rollback-only at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:752) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) at org.springframework.test.context.transaction.TransactionContext.endTransaction(TransactionContext.java:131) at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:255) at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:445) at org.springframework.test.context.junit.jupiter.SpringExtension.afterEach(SpringExtension.java:206) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAfterEachCallbacks$12(TestMethodTestDescriptor.java:257) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$13(TestMethodTestDescriptor.java:273) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$14(TestMethodTestDescriptor.java:273) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAllAfterMethodsOrCallbacks(TestMethodTestDescriptor.java:272) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAfterEachCallbacks(TestMethodTestDescriptor.java:256) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:141) ... 47 moreCaused by: java.lang.IllegalArgumentException: class java.lang.String cannot be cast to class java.lang.Boolean (java.lang.String and java.lang.Boolean are in module java.base of loader 'bootstrap') at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3434) at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3380) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:315) at com.sun.proxy.$Proxy112.find(Unknown Source) at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findById(SimpleJpaRepository.java:335) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:289) at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:530) at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:286) at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:640) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:164) at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:139) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:76) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ... 77 moreCaused by: java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Boolean (java.lang.String and java.lang.Boolean are in module java.base of loader 'bootstrap') at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3396) ... 106 more  

우선 저의 코드부터 올려보겠습니다.@Query("select m from Member m left join m.team t") List<Member> findmemberByLeftJoin();저의 코드는 JPQL에서 left join fetch를 하지 않고 left join만 걸었습니다.강의 내용에 의하면 단순 joinAll()을 하였을 때 영속성 컨텍스트로부터 proxy객체를 일단은 주입한다고 하셨습니다.저의 경우는 @Query를 활용하여 다음과 같은 JPQL을 선언하였을 때, Console에 출력되는 내용은 아래와 같습니다.left join은 걸리지만 Select절에는 Member에 대한 데이터만 불러올 뿐, Team에 대한 데이터는 불러오지 않고 있습니다.그렇다면 이때 Team을 getClass로 출력할때 proxy객체일거라 생각했습니다.하지만 직접 출력해보니 class study.datajpa.entity.Team 이렇게 출력이 됩니다.이것은 조회는 하지 않았으나, 프록시객체를 반환하지는 않고 진짜 객체로 반환한다는 뜻인데...여기서부터 햇갈리기 시작합니다.어떻게 이해하고 받아들여야 할까요?1. 쿼리상에서는 Team을 불러오지 않는데, 어떻게 객체탐색을 통해 Team 객체가 조회가 되나요?2. 쿼리상에서는 Team을 불러오지 않는데, 어째서 Proxy객체가 아닌 진짜 엔티티인가요?3. 결국 이런 현상은 패치조인과 다른 것 이라고 이해해야 할까요? (이 현상은 inner Join에서도 발생합니다) * left조인은 걸리고, select절에 team은 없지만 * n+1이 발생하지 않고도 team이 조회되는 이유 * 프록시 객체가 아닌 진짜 team객체를 반환해주는 이유

[질문 내용]인터페이스를 구현한 구체 클래스가 하나인경우 xxxxxImpl이라는 네이밍을 관례적으로 사용한다고 하셨는데제가 생각했을때는 구현클래스가 하나일경우(기능확장이 필요없다고 판단될경우) 굳이 인터페이스를 만들 필요가 없을것같은데,1.인터페이스를 구현한 구체클래스가 하나인경우가 많은편인지? 혹은 어떤경우인지?2. 이 네이밍룰을 따른후 혹시 구현클래스가 하나더 생긴다면 네이밍을 수정하는지..?

스프링 빈 설정 메타 정보-BeanDefinition 강의 실습 중에 마지막에 xml 파일로 beanDefinition을 만들게 하니까 이런 오류가 뜨더군요그리고 이전에 만들었던xmlAppContext에서도 같은 오류가 발생했는데요 pdf파일의 예시 코드를 복붙해서 돌렸는데도 같은 오류가 나서질문 드립니다 org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [hello.core.member.MemberServiceImpl] for bean with name 'memberService' defined in class path resource [appConfig.xml]; nested exception is java.lang.ClassNotFoundException: hello.core.member.MemberServiceImplappConfig.xml<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="memberService" class="hello.core.member.MemberServiceImpl"> <constructor-arg name="memberRepository" ref="memberRepository"/> </bean> <bean id="memberRepository" class="hello.core.member.MemoryMemberRepository"/> <bean id="orderService" class="hello.core.order.OrderServiceImpl"> <constructor-arg name="memberRepository" ref="memberRepository"/> <constructor-arg name="discountPolicy" ref="discountPolicy"/> </bean> <bean id="discountPolicy" class="hello.core.discount.RateDiscountPolicy"/> </beans> MemberServiceImpl.java package member; public class MemberServiceImpl implements MemberService{ private final MemberRepository memberRepository; public MemberServiceImpl(MemberRepository memberRepository) { this.memberRepository = memberRepository; } @Override public void join(Member member) { memberRepository.save(member); } @Override public Member findMember(Long memberId) { return memberRepository.findById(memberId); } }

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.MemberServiceIntegrationTest 회원가입을 실행하는 과정에서 OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended이 오류를 어떡해야할지 모르겠어요

안녕하세요 선생님, 먼저 좋은 강의 감사드립니다.강의를 들으며 갱신 손실 문제를 해결하기 위한 여러 방법들을 학습하며 문득 이런 고민이 생겼습니다. 갱신 손실 문제가 일어날 것 같은 로직(예: 재고 감소)을 구현할 때, 구현 단계에서부터 동시성 제어를 처음부터 고려해야하는가? 고려한다고 했을 때, 트래픽이 얼마나 될지 모르는 상황에서 어떤 방법을 사용할 것인가?이에 대한 제 생각은 이렇습니다. 처음 로직을 작성할 때부터, 갱신 손실 문제가 운영 중에 발생한다면 큰 문제가 될 수 있으므로 반드시 구현 단계에서 부터 고려한다. 갱신 손실 문제가 아예 일어나지 않는 트래픽이더라도 어차피 성능상 손해보는 것은 없을 것이다.트래픽이 얼마가 될지 모르므로 우선 Optimistic Lock을 우선적으로 사용하고, 성능이 안 나오면 Pessimistic Lock 을 사용한다.저는 이렇게 생각했는데, 선생님께서는 위와 같은 상황이라면 어떻게 구현하실 건지 궁금합니다. 또 일단 갱신 손실 문제를 핸들링 하는 상황이라면 Redis나 Named Lock이 아닌 Optimistic Lock, Pessimistic Lock 을 가장 먼저 고려하실 건지도 궁금합니다.읽어주셔서 감사합니다. :)

controller 단에서 호출하는 mapper 가 오류가 나고 있습니다... 화면에서 crud 시킬때 500에러:Request processing failed; nested exception is java.lang.ClassCastException: java.lang.String cannot be cast to kr.board.entity.MemberUser근본이유:java.lang.ClassCastException: java.lang.String cannot be cast to kr.board.entity.MemberUser kr.board.controller.MemeberController.memRegister(MemeberController.java:118).  controller에서 syso 찍어가며 넘어가야할 값들이 다 들어있는것을 확인했습니다.그런데도 매퍼 접근하려고하면 오류가 나고 있습니다.콘솔에서의 오류:Exception in thread "main" java.lang.NullPointerException at kr.board.controller.BoardRestController.wifiInfoInsert(BoardRestController.java:66)

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]package hello.jdbc.connection; import lombok.extern.slf4j.Slf4j; import org.junit.jupiter.api.Test; import org.springframework.jdbc.datasource.DriverManagerDataSource; import javax.sql.DataSource; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import static hello.jdbc.connection.ConnectionConst.*; @Slf4j public class ConnectionTest { @Test void driverManager() throws SQLException { Connection con1 = DriverManager.getConnection(URL, USERNAME, PASSWORD); Connection con2 = DriverManager.getConnection(URL, USERNAME, PASSWORD); log.info("connection={}, class={}", con1, con1.getClass()); log.info("connection={}, class={}", con2, con2.getClass()); } @Test void dataSourceDriverManager() throws SQLException { //DriverManagerDataSource - 항상 새로운 커넥션 획득 DriverManagerDataSource dataSource = new DriverManagerDataSource(URL, USERNAME, PASSWORD); useDataSource(dataSource); } private void useDataSource(DataSource dataSource) throws SQLException { Connection con1 = dataSource.getConnection(); Connection con2 = dataSource.getConnection(); log.info("connection={}, class={}", con1, con1.getClass()); log.info("connection={}, class={}", con2, con2.getClass()); } }실행결과21:19:15.821 [main] INFO hello.jdbc.connection.ConnectionTest -- connection=conn2: url=jdbc:h2:tcp://localhost/~/test user=SA, class=class org.h2.jdbc.JdbcConnection21:19:15.821 [main] INFO hello.jdbc.connection.ConnectionTest -- connection=conn3: url=jdbc:h2:tcp://localhost/~/test user=SA, class=class org.h2.jdbc.JdbcConnection(질문)밑에 내용이 나오지 않은데 왜 그런지 알 수 있을까요?DriverManagerDataSource - Creating new JDBC DriverManager Connection to [jdbc:h2:tcp:..test] DriverManagerDataSource - Creating new JDBC DriverManager Connection to [jdbc:h2:tcp:..test]

그냥 궁금해서 redis-cli에서 "subscribe 1" 을 하고 Redisson 실습 시 락에 대한 메시지가 날아오는 지 궁금해서 해봤더니 아무 내용도 안 오네여? 아예 상관 없는 내용인가여 ㅋㅋㅋ..

학습 관련 질문을 남겨주세요. 어떤 부분이 고민인지, 무엇이 문제인지 상세히 작성하면 더 좋아요!먼저 유사한 질문이 있었는지 검색해 보세요.서로 예의를 지키며 존중하는 문화를 만들어가요.안녕하세요. 강의를 열심히 보고 있는 수강자입니다.다름이 아니라 이번 강의를 보면서 궁금한 점이 있는데요! LocalDateTime을 인자값으로 전달받아 단위테스트하기 좋게 리팩토링하셨는데, 나중에 createOrder를 호출하는 객체의 통합테스트를 진행할때는 시간에 대한 테스트코드를 어떻게 처리하는지 궁금합니다.예를 들어 CafeKioskRunner에서 main 메서드를 통합 테스트한다고 했을 때 시간에 따라 createOrder에서 성공 또는 exception이 발생할 것 같아서 이것에 대한 통합테스트를 어떻게 처리하는지 궁금합니다.감사합니다.

회원 기능 테스트 강의 08:50분에 실행하는 테스트 실행하다 제목과 같은 오류가 발생했습니다ㅠㅠ 커뮤니티에 찾아봐도 몰라서 질문 드립니다. 꼭 좀 도와주시면 감사하겠습니다.MemberRepository 입니다.MemberServiceTest입니다.MemberRepository입니다. 아래는 오류 문입니다antlr.NoViableAltException: unexpected AST node: . at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2188) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:841) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:635) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:339) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:287) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:276) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:112) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:636) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:748) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:848) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:114) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] 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.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:315) ~[spring-orm-5.3.26.jar:5.3.26] at com.sun.proxy.$Proxy123.createQuery(Unknown Source) ~[na:na] at jpabook.jpashop.member.MemberRepository.findByName(MemberRepository.java:38) ~[main/:na] at jpabook.jpashop.member.MemberRepository$$FastClassBySpringCGLIB$$cf542431.invoke(<generated>) ~[main/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.26.jar:5.3.26] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.26.jar:5.3.26] at jpabook.jpashop.member.MemberRepository$$EnhancerBySpringCGLIB$$22198719.findByName(<generated>) ~[main/:na] at jpabook.jpashop.service.MemberService.validateDUplicateMember(MemberService.java:44) ~[main/:na] at jpabook.jpashop.service.MemberService.join(MemberService.java:33) ~[main/:na] at jpabook.jpashop.service.MemberService$$FastClassBySpringCGLIB$$560b731b.invoke(<generated>) ~[main/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.26.jar:5.3.26] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.26.jar:5.3.26] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.26.jar:5.3.26] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.26.jar:5.3.26] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.26.jar:5.3.26] at jpabook.jpashop.service.MemberService$$EnhancerBySpringCGLIB$$1f95cebf.join(<generated>) ~[main/:na] at jpabook.jpashop.service.MemberServiceTest.MemberSign(MemberServiceTest.java:31) ~[test/: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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59) ~[junit-4.13.1.jar:4.13.1] at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) ~[junit-4.13.1.jar:4.13.1] at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) ~[junit-4.13.1.jar:4.13.1] at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) ~[spring-test-5.3.26.jar:5.3.26] at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) ~[junit-4.13.1.jar:4.13.1] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) ~[spring-test-5.3.26.jar:5.3.26] at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) ~[junit-4.13.1.jar:4.13.1] at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) ~[spring-test-5.3.26.jar:5.3.26] at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) ~[spring-test-5.3.26.jar:5.3.26] at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) ~[junit-4.13.1.jar:4.13.1] at org.junit.runners.ParentRunner.run(ParentRunner.java:413) ~[junit-4.13.1.jar:4.13.1] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) ~[spring-test-5.3.26.jar:5.3.26] at org.junit.runner.JUnitCore.run(JUnitCore.java:137) ~[junit-4.13.1.jar:4.13.1] at org.junit.runner.JUnitCore.run(JUnitCore.java:115) ~[junit-4.13.1.jar:4.13.1] at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:42) ~[junit-vintage-engine-5.8.2.jar:5.8.2] at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80) ~[junit-vintage-engine-5.8.2.jar:5.8.2] at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:72) ~[junit-vintage-engine-5.8.2.jar:5.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[na:na] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) ~[na:na] at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) ~[na:na] at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) ~[na:na] at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) ~[na:na] at com.sun.proxy.$Proxy2.stop(Unknown Source) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) ~[na:na] at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) ~[na:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) ~[gradle-worker.jar:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) ~[gradle-worker.jar:na]2023-06-25 19:33:44.563 INFO 23436 --- [ Test worker] p6spy : #1687689224563 | took 0ms | rollback | connection 4| url jdbc:h2:mem:fa852fc9-f2a7-4111-a7ca-8aefa01f2a24;2023-06-25 19:33:44.569 INFO 23436 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Rolled back transaction for test: [DefaultTestContext@15515c51 testClass = MemberServiceTest, testInstance = jpabook.jpashop.service.MemberServiceTest@363ee411, testMethod = MemberSign@MemberServiceTest, testException = org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name], mergedContextConfiguration = [WebMergedContextConfiguration@36a7abe1 testClass = MemberServiceTest, locations = '{}', classes = '{class jpabook.jpashop.JpashopApplication}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@463b4ac8, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@66b7550d, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@4212a0c8, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@476b0ae6, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@488eb7f2, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@294e5088], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]]org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name]org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name] at app//org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:374) at app//org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:235) at app//org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551) at app//org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) at app//org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) at app//org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at app//org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at app//jpabook.jpashop.member.MemberRepository$$EnhancerBySpringCGLIB$$22198719.findByName(<generated>) at app//jpabook.jpashop.service.MemberService.validateDUplicateMember(MemberService.java:44) at app//jpabook.jpashop.service.MemberService.join(MemberService.java:33) at app//jpabook.jpashop.service.MemberService$$FastClassBySpringCGLIB$$560b731b.invoke(<generated>) at app//org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at app//org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at app//org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at app//org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at app//org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at app//jpabook.jpashop.service.MemberService$$EnhancerBySpringCGLIB$$1f95cebf.join(<generated>) at app//jpabook.jpashop.service.MemberServiceTest.MemberSign(MemberServiceTest.java:31) at java.base@11/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@11/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base@11/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11/java.lang.reflect.Method.invoke(Method.java:566) at app//org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59) at app//org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at app//org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) at app//org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at app//org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74) at app//org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84) at app//org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) at app//org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at app//org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) at app//org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at app//org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) at app//org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at app//org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at app//org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at app//org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at app//org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at app//org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at app//org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at app//org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at app//org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at app//org.junit.runners.ParentRunner.run(ParentRunner.java:413) at app//org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at app//org.junit.runner.JUnitCore.run(JUnitCore.java:137) at app//org.junit.runner.JUnitCore.run(JUnitCore.java:115) at app//org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:42) at app//org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80) at app//org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:72) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) at java.base@11/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@11/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base@11/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at com.sun.proxy.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name] at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:757) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:848) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:114) 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.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:315) at com.sun.proxy.$Proxy123.createQuery(Unknown Source) at jpabook.jpashop.member.MemberRepository.findByName(MemberRepository.java:38) at jpabook.jpashop.member.MemberRepository$$FastClassBySpringCGLIB$$cf542431.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ... 81 moreCaused by: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: . near line 1, column 54 [select m from jpabook.jpashop.domain.Member m where m.name] at app//org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:74) at app//org.hibernate.hql.internal.ast.ErrorTracker.throwQueryException(ErrorTracker.java:93) at app//org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:282) at app//org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192) at app//org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144) at app//org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:112) at app//org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73) at app//org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162) at app//org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:636) at app//org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:748) ... 96 more

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예[질문 내용]mv.getModel().put("member",member);에서 mv.getModel()을 해서 model을 불러와 put하는 것까지는 이해가 됩니다.근데 ("member", member)을 하는 이유를 모르겠습니다. member를 넣어서 map을 넣는건가요?그리고 제일 이해가 안되는 것이 "member"부분입니다. 이것은 무슨의미인가요?

DriverManagerDataSource를 사용하면 DriverManager를 통해 직접 DB에 접근해서 Connection을 획득하는 것으로 알고 있습니다.HikariDataSource를 사용하면 ConnectionPool에서 얻어오는 것으로 알고 있습니다.그리고 미리 ConnectionPool 내부의 DriverManager가 직접 DB에 접근해서 Connection을 획득한 후 ConnectionPool에 보관하는 것이 많나요?맞다면 DrvierManagerDataSource나 HikariDataSource 모두 DB로부터 Connection을 직접 획득하는 주체는 DriverManager인거고 획득 방식은 동일한 것이 맞나요?