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]강의에서 클레스에 @Transactional를 넣을 수 있다고 하였는데 그럼 그 클래스 내부에 있는 모든 메서드에 @Transactional가 붙는건가요? 아니면 특정 몇몇 메서드에만 붙는건가요? 만약 특정 몇몇 메서드에 붙는다고 한다면 그 조건이 무엇인가요?

안녕하세요..! 입문 편 데이터베이스 생성 부분 듣고 있는데h2 다운 받아서 실행 후 연결을 계속 해도 test db가 생성 되지 않습니다.h2.bat이랑 h2w.bat으로 다 해봐도 연결이 안돼요.혹시 그냥 파일 생성을 따로 해줘야 하는 걸까요? 

제가 따로 구현하지 않고Spring Data JPA JpaRepository 에서 상속받은deleteById 를 사용하면먼저 select query 가 1번 나간 다음에 찾아온 Entity로 delete 메서드를 호출하는 것 같더라구요그래서 총 select, delete 쿼리가 각각 1번 총 2번 나가는 것 같은데 PK로 delete 를 하고 싶을 때,@Query로 작성하여 delete 문을 1번 나가게 하는 것과,위의 방법대로 select, delete 각각 1번 나가는 방법 중에 어떤 방법을 사용하는 것이 좋은가요 ?

${#temporals.monthName(localDateTime)} = 5월${#temporals.monthNameShort(localDateTime)} = 5월결과 값이 같은데 무슨 차이가 있는건가요?

[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]마지막에 의존관계가 인터페이스 뿐만 아니라 구현까지 모두 의존하는 문제점이 있다고 하셨는데, 인터페이스는 MemberRepository를 의미하고 구현의존은 MemoryMemberRepository를 말씀하신건가요?그리고 '추상화에도 의존하고 구체화에도 의존함'이라고 하셨는데 이건 어떤 의미일까요?

안녕하세요!문득 궁금증이 생겨서 질문합니다.예제에서는 Basic, VIP 이렇게 2개의 회원등급이 enum에 존재하고 DiscountPolicy 구현클래스는 각 등급에 따른 분기로 할인정도를 조절합니다. (VIP의 경우 10%할인, 1000원 할인)만약 회원등급이 추가된다면 DiscountPolicy 구현클래스의 코드를 모두 수정해야 하는데, 이 경우 OCP위반이라고 하나요?아니면 어쩔 수 없는 비즈니스 로직이 변경된 경우인가요?

항상 좋은 강의, 감사히 보고 있습니다.강의에서 AppConfig에서 DiscountPolicy를 FixDiscountPolicy로 고정합니다.만약 상황에 따라 정률, 정액할인 정책을 동적으로 적용한다고 한다면 어떤식으로 설계하면 좋을까요?쿠폰에 따라 할인정책이 달라지는 경우 어떻게 해야 될까요..? 

[상황 예시]한정판 상품 A의 재고 수량 : 2000개 (1인당 1개씩만 구매 가능)[구매 로직]1. 데이터 베이스에서 상품 A를 조회2. A의 재고 수량 확인3. 재고 수량이 0보다 큰 경우 재고를 1 감소시키고 구매 완료 처리[테스트]2000개 스레드 생성해서 동시에 구매 요청 후 잔여 재고 확인테스트 코드에서 2000개의 스레드가 동작하기 전 System.nanoTime() 과 모두 동작이 끝난 후 System.nanoTime() 을 통해 처리 시간을 계산하여 비교해보고 있습니다.테스트 환경 - h2 database 위와 같은 방식으로 현재 프로젝트를 구현 중에 있습니다. 한정판 상품 구매의 특성 상 충돌이 잦을 것이라고 생각해서 다음과 같은 후보군으로 실험을 하고 있습니다.1. 비관적 락2. Lettuce 를 이용한 분산락3. Redisson 을 이용한 분산락제가 알아본 바나 다른 사례들을 봤을 때 Redis를 거친다고 해서 DB에서 제공해주는 락 기능을 사용하는 것과 속도면에서 차이가 거의 없는 것으로 알고 있었는데 실제 실험 결과가 다음과 같습니다.1. 비관적 락 - 평균 6초2. Lettuce - 평균 34초3. Redisson - 평균 12초Redis를 이용한 분산락 구현 코드는 강사님의 강의를 따라했는데 혹시 이런 결과가 나오는 이유가 무엇일까요?제 추측으로는 Lettuce 를 이용하는 방식에서는 2000개의 스레드가 반복적으로 락 획득 요청을 보냄에 따라 Redis에 부하가 심해서 속도가 느려질 수 있을 것 같은데 Redisson 을 이용한 방식은 왜 느린지 전혀 모르겠습니다.

Starting Gradle Daemon...Gradle Daemon started in 6 s 240 msFAILURE: Build failed with an exception.* What went wrong:Gradle could not start your build.> Cannot create service of type DependencyLockingHandler using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createDependencyLockingHandler() as there is a problem with parameter #2 of type ConfigurationContainerInternal.> Cannot create service of type ConfigurationContainerInternal using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createConfigurationContainer() as there is a problem with parameter #13 of type DefaultConfigurationFactory.> Cannot create service of type DefaultConfigurationFactory using DefaultConfigurationFactory constructor as there is a problem with parameter #2 of type ConfigurationResolver.> Cannot create service of type ConfigurationResolver using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createDependencyResolver() as there is a problem with parameter #1 of type ArtifactDependencyResolver.> Cannot create service of type ArtifactDependencyResolver using method DependencyManagementBuildScopeServices.createArtifactDependencyResolver() as there is a problem with parameter #4 of type List<ResolverProviderFactory>.> Could not create service of type VersionControlRepositoryConnectionFactory using VersionControlBuildSessionServices.createVersionControlSystemFactory().> Failed to create parent directory 'D:\Study\hello-spring\.gradle' when creating directory 'D:\Study\hello-spring\.gradle\vcs-1'* Try:> Run with --info or --debug option to get more log output.> Run with --scan to get full insights.* Exception is:org.gradle.initialization.exception.InitializationException: Gradle could not start your build.at org.gradle.initialization.exception.DefaultExceptionAnalyser.collectFailures(DefaultExceptionAnalyser.java:65)at org.gradle.initialization.exception.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:55)at org.gradle.initialization.exception.StackTraceSanitizingExceptionAnalyser.transform(StackTraceSanitizingExceptionAnalyser.java:39)at org.gradle.internal.buildtree.DefaultBuildTreeFinishExecutor.finishBuildTree(DefaultBuildTreeFinishExecutor.java:54)at org.gradle.internal.buildtree.DefaultBuildTreeLifecycleController.lambda$runBuild$5(DefaultBuildTreeLifecycleController.java:118)at org.gradle.internal.model.StateTransitionController.lambda$transition$5(StateTransitionController.java:166)at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:247)at org.gradle.internal.model.StateTransitionController.lambda$transition$6(StateTransitionController.java:166)at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:44)at org.gradle.internal.model.StateTransitionController.transition(StateTransitionController.java:166)at org.gradle.internal.buildtree.DefaultBuildTreeLifecycleController.runBuild(DefaultBuildTreeLifecycleController.java:110)at org.gradle.internal.buildtree.DefaultBuildTreeLifecycleController.fromBuildModel(DefaultBuildTreeLifecycleController.java:81)at org.gradle.tooling.internal.provider.runner.AbstractClientProvidedBuildActionRunner.runClientAction(AbstractClientProvidedBuildActionRunner.java:43)at org.gradle.tooling.internal.provider.runner.ClientProvidedPhasedActionRunner.run(ClientProvidedPhasedActionRunner.java:53)at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)at org.gradle.internal.buildtree.ProblemReportingBuildActionRunner.run(ProblemReportingBuildActionRunner.java:49)at org.gradle.launcher.exec.BuildOutcomeReportingBuildActionRunner.run(BuildOutcomeReportingBuildActionRunner.java:65)at org.gradle.tooling.internal.provider.FileSystemWatchingBuildActionRunner.run(FileSystemWatchingBuildActionRunner.java:136)at org.gradle.launcher.exec.BuildCompletionNotifyingBuildActionRunner.run(BuildCompletionNotifyingBuildActionRunner.java:41)at org.gradle.launcher.exec.RootBuildLifecycleBuildActionExecutor.lambda$execute$0(RootBuildLifecycleBuildActionExecutor.java:40)at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:122)at org.gradle.launcher.exec.RootBuildLifecycleBuildActionExecutor.execute(RootBuildLifecycleBuildActionExecutor.java:40)at org.gradle.internal.buildtree.DefaultBuildTreeContext.execute(DefaultBuildTreeContext.java:40)at org.gradle.launcher.exec.BuildTreeLifecycleBuildActionExecutor.lambda$execute$0(BuildTreeLifecycleBuildActionExecutor.java:65)at org.gradle.internal.buildtree.BuildTreeState.run(BuildTreeState.java:53)at org.gradle.launcher.exec.BuildTreeLifecycleBuildActionExecutor.execute(BuildTreeLifecycleBuildActionExecutor.java:65)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor$3.call(RunAsBuildOperationBuildActionExecutor.java:61)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor$3.call(RunAsBuildOperationBuildActionExecutor.java:57)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor.execute(RunAsBuildOperationBuildActionExecutor.java:57)at org.gradle.launcher.exec.RunAsWorkerThreadBuildActionExecutor.lambda$execute$0(RunAsWorkerThreadBuildActionExecutor.java:36)at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:249)at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:109)at org.gradle.launcher.exec.RunAsWorkerThreadBuildActionExecutor.execute(RunAsWorkerThreadBuildActionExecutor.java:36)at org.gradle.tooling.internal.provider.continuous.ContinuousBuildActionExecutor.execute(ContinuousBuildActionExecutor.java:110)at org.gradle.tooling.internal.provider.SubscribableBuildActionExecutor.execute(SubscribableBuildActionExecutor.java:64)at org.gradle.internal.session.DefaultBuildSessionContext.execute(DefaultBuildSessionContext.java:46)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter$ActionImpl.apply(BuildSessionLifecycleBuildActionExecuter.java:100)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter$ActionImpl.apply(BuildSessionLifecycleBuildActionExecuter.java:88)at org.gradle.internal.session.BuildSessionState.run(BuildSessionState.java:69)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter.execute(BuildSessionLifecycleBuildActionExecuter.java:62)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter.execute(BuildSessionLifecycleBuildActionExecuter.java:41)at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:63)at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:31)at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:52)at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:40)at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:47)at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:31)at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:65)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:39)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:29)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:35)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:78)at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:75)at org.gradle.util.internal.Swapper.swap(Swapper.java:38)at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:75)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:63)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:84)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:52)at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:49)Caused by: org.gradle.internal.service.ServiceCreationException: Cannot create service of type DependencyLockingHandler using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createDependencyLockingHandler() as there is a problem with parameter #2 of type ConfigurationContainerInternal.at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:803)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.prepare(DefaultServiceRegistry.java:688)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.getService(DefaultServiceRegistry.java:711)at org.gradle.internal.service.DefaultServiceRegistry$OwnServices.getService(DefaultServiceRegistry.java:444)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1082)at org.gradle.internal.service.DefaultServiceRegistry.getService(DefaultServiceRegistry.java:323)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:317)at org.gradle.internal.service.DefaultServiceRegistry.get(DefaultServiceRegistry.java:302)at org.gradle.internal.service.DefaultServiceRegistry.get(DefaultServiceRegistry.java:297)at org.gradle.api.internal.artifacts.DefaultDependencyManagementServices$DefaultDependencyResolutionServices.getDependencyLockingHandler(DefaultDependencyManagementServices.java:611)at org.gradle.api.internal.initialization.DefaultScriptHandler.<init>(DefaultScriptHandler.java:83)at org.gradle.api.internal.initialization.DefaultScriptHandlerFactory.create(DefaultScriptHandlerFactory.java:61)at org.gradle.api.internal.initialization.DefaultScriptHandlerFactory.create(DefaultScriptHandlerFactory.java:55)at org.gradle.configuration.DefaultInitScriptProcessor.process(DefaultInitScriptProcessor.java:48)at org.gradle.initialization.InitScriptHandler$1.run(InitScriptHandler.java:56)at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)at org.gradle.initialization.InitScriptHandler.executeScripts(InitScriptHandler.java:51)at org.gradle.initialization.InitScriptHandlingSettingsLoader.findAndLoadSettings(InitScriptHandlingSettingsLoader.java:33)at org.gradle.initialization.GradlePropertiesHandlingSettingsLoader.findAndLoadSettings(GradlePropertiesHandlingSettingsLoader.java:39)at org.gradle.initialization.DefaultSettingsPreparer.prepareSettings(DefaultSettingsPreparer.java:31)at org.gradle.initialization.BuildOperationFiringSettingsPreparer$LoadBuild.doLoadBuild(BuildOperationFiringSettingsPreparer.java:62)at org.gradle.initialization.BuildOperationFiringSettingsPreparer$LoadBuild.run(BuildOperationFiringSettingsPreparer.java:57)at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)at org.gradle.initialization.BuildOperationFiringSettingsPreparer.prepareSettings(BuildOperationFiringSettingsPreparer.java:45)at org.gradle.initialization.VintageBuildModelController.lambda$prepareSettings$1(VintageBuildModelController.java:80)at org.gradle.internal.model.StateTransitionController.lambda$doTransition$12(StateTransitionController.java:236)at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:247)at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:235)at org.gradle.internal.model.StateTransitionController.lambda$transitionIfNotPreviously$10(StateTransitionController.java:210)at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:34)at org.gradle.internal.model.StateTransitionController.transitionIfNotPreviously(StateTransitionController.java:206)at org.gradle.initialization.VintageBuildModelController.prepareSettings(VintageBuildModelController.java:80)at org.gradle.initialization.VintageBuildModelController.getLoadedSettings(VintageBuildModelController.java:57)at org.gradle.internal.model.StateTransitionController.lambda$notInState$3(StateTransitionController.java:143)at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:44)at org.gradle.internal.model.StateTransitionController.notInState(StateTransitionController.java:139)at org.gradle.internal.build.DefaultBuildLifecycleController.loadSettings(DefaultBuildLifecycleController.java:101)at org.gradle.internal.build.AbstractBuildState.ensureProjectsLoaded(AbstractBuildState.java:98)at org.gradle.plugins.ide.internal.tooling.GradleBuildBuilder.create(GradleBuildBuilder.java:58)at org.gradle.plugins.ide.internal.tooling.GradleBuildBuilder.create(GradleBuildBuilder.java:38)at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildScopedBuilder.build(DefaultToolingModelBuilderRegistry.java:206)at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingBuilder$1.call(DefaultToolingModelBuilderRegistry.java:337)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingBuilder.build(DefaultToolingModelBuilderRegistry.java:334)at org.gradle.internal.build.DefaultBuildToolingModelController$AbstractToolingScope.getModel(DefaultBuildToolingModelController.java:82)at org.gradle.tooling.internal.provider.runner.DefaultBuildController.getModel(DefaultBuildController.java:106)at org.gradle.tooling.internal.consumer.connection.ParameterAwareBuildControllerAdapter.getModel(ParameterAwareBuildControllerAdapter.java:39)at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.getModel(UnparameterizedBuildController.java:113)at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.getModel(NestedActionAwareBuildControllerAdapter.java:31)at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.getModel(UnparameterizedBuildController.java:76)at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.getModel(NestedActionAwareBuildControllerAdapter.java:31)at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.getBuildModel(UnparameterizedBuildController.java:71)at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.getBuildModel(NestedActionAwareBuildControllerAdapter.java:31)at org.jetbrains.plugins.gradle.model.ProjectImportAction.execute(ProjectImportAction.java:121)at org.jetbrains.plugins.gradle.model.ProjectImportAction.execute(ProjectImportAction.java:43)at org.gradle.tooling.internal.consumer.connection.InternalBuildActionAdapter.execute(InternalBuildActionAdapter.java:64)at org.gradle.tooling.internal.provider.runner.AbstractClientProvidedBuildActionRunner$ActionAdapter.runAction(AbstractClientProvidedBuildActionRunner.java:131)at org.gradle.tooling.internal.provider.runner.AbstractClientProvidedBuildActionRunner$ActionAdapter.beforeTasks(AbstractClientProvidedBuildActionRunner.java:99)at org.gradle.internal.buildtree.DefaultBuildTreeModelCreator.beforeTasks(DefaultBuildTreeModelCreator.java:52)at org.gradle.internal.buildtree.DefaultBuildTreeLifecycleController.lambda$fromBuildModel$2(DefaultBuildTreeLifecycleController.java:82)at org.gradle.internal.buildtree.DefaultBuildTreeLifecycleController.lambda$runBuild$5(DefaultBuildTreeLifecycleController.java:113)... 76 moreCaused by: org.gradle.internal.service.ServiceCreationException: Cannot create service of type ConfigurationContainerInternal using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createConfigurationContainer() as there is a problem with parameter #13 of type DefaultConfigurationFactory.at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:803)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.prepare(DefaultServiceRegistry.java:688)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.getService(DefaultServiceRegistry.java:711)at org.gradle.internal.service.DefaultServiceRegistry$OwnServices.getService(DefaultServiceRegistry.java:444)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1082)at org.gradle.internal.service.DefaultServiceRegistry.access$1600(DefaultServiceRegistry.java:77)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:801)... 158 moreCaused by: org.gradle.internal.service.ServiceCreationException: Cannot create service of type DefaultConfigurationFactory using DefaultConfigurationFactory constructor as there is a problem with parameter #2 of type ConfigurationResolver.at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:803)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.prepare(DefaultServiceRegistry.java:688)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.getService(DefaultServiceRegistry.java:711)at org.gradle.internal.service.DefaultServiceRegistry$OwnServices.getService(DefaultServiceRegistry.java:444)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1082)at org.gradle.internal.service.DefaultServiceRegistry.access$1600(DefaultServiceRegistry.java:77)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:801)... 165 moreCaused by: org.gradle.internal.service.ServiceCreationException: Cannot create service of type ConfigurationResolver using method DefaultDependencyManagementServices$DependencyResolutionScopeServices.createDependencyResolver() as there is a problem with parameter #1 of type ArtifactDependencyResolver.at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:803)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.prepare(DefaultServiceRegistry.java:688)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.getService(DefaultServiceRegistry.java:711)at org.gradle.internal.service.DefaultServiceRegistry$OwnServices.getService(DefaultServiceRegistry.java:444)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1082)at org.gradle.internal.service.DefaultServiceRegistry.access$1600(DefaultServiceRegistry.java:77)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:801)... 172 moreCaused by: org.gradle.internal.service.ServiceCreationException: Cannot create service of type ArtifactDependencyResolver using method DependencyManagementBuildScopeServices.createArtifactDependencyResolver() as there is a problem with parameter #4 of type List<ResolverProviderFactory>.at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:803)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.prepare(DefaultServiceRegistry.java:688)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.getService(DefaultServiceRegistry.java:711)at org.gradle.internal.service.DefaultServiceRegistry$OwnServices.getService(DefaultServiceRegistry.java:444)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry$ParentServices.getService(DefaultServiceRegistry.java:1050)at org.gradle.internal.service.DefaultServiceRegistry$CompositeServiceProvider.getService(DefaultServiceRegistry.java:996)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1082)at org.gradle.internal.service.DefaultServiceRegistry.access$1600(DefaultServiceRegistry.java:77)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:801)... 179 moreCaused by: org.gradle.internal.service.ServiceCreationException: Could not create service of type VersionControlRepositoryConnectionFactory using VersionControlBuildSessionServices.createVersionControlSystemFactory().at org.gradle.internal.service.DefaultServiceRegistry$FactoryMethodService.invokeMethod(DefaultServiceRegistry.java:901)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.createServiceInstance(DefaultServiceRegistry.java:826)at org.gradle.internal.service.DefaultServiceRegistry$ManagedObjectServiceProvider.getInstance(DefaultServiceRegistry.java:611)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.get(DefaultServiceRegistry.java:674)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.assembleParameters(DefaultServiceRegistry.java:839)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.createServiceInstance(DefaultServiceRegistry.java:825)at org.gradle.internal.service.DefaultServiceRegistry$ManagedObjectServiceProvider.getInstance(DefaultServiceRegistry.java:611)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.get(DefaultServiceRegistry.java:674)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.assembleParameters(DefaultServiceRegistry.java:839)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.createServiceInstance(DefaultServiceRegistry.java:825)at org.gradle.internal.service.DefaultServiceRegistry$ManagedObjectServiceProvider.getInstance(DefaultServiceRegistry.java:611)at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.get(DefaultServiceRegistry.java:674)at org.gradle.internal.service.DefaultServiceRegistry.getCollectionService(DefaultServiceRegistry.java:1129)at org.gradle.internal.service.DefaultServiceRegistry.getCollectionService(DefaultServiceRegistry.java:1111)at org.gradle.internal.service.DefaultServiceRegistry.find(DefaultServiceRegistry.java:1074)at org.gradle.internal.service.DefaultServiceRegistry.access$1600(DefaultServiceRegistry.java:77)at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.bind(DefaultServiceRegistry.java:801)... 188 moreCaused by: org.gradle.api.UncheckedIOException: Failed to create parent directory 'D:\Study\hello-spring\.gradle' when creating directory 'D:\Study\hello-spring\.gradle\vcs-1'at org.gradle.util.internal.GFileUtils.mkdirs(GFileUtils.java:317)at org.gradle.cache.internal.DefaultPersistentDirectoryStore.open(DefaultPersistentDirectoryStore.java:86)at org.gradle.cache.internal.DefaultPersistentDirectoryStore.open(DefaultPersistentDirectoryStore.java:43)at org.gradle.cache.internal.DefaultCacheFactory.doOpen(DefaultCacheFactory.java:103)at org.gradle.cache.internal.DefaultCacheFactory.open(DefaultCacheFactory.java:68)at org.gradle.cache.internal.DefaultCacheRepository$PersistentCacheBuilder.open(DefaultCacheRepository.java:117)at org.gradle.vcs.internal.services.DefaultVersionControlRepositoryFactory.<init>(DefaultVersionControlRepositoryFactory.java:55)at org.gradle.vcs.internal.services.VersionControlServices$VersionControlBuildSessionServices.createVersionControlSystemFactory(VersionControlServices.java:116)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 org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:125)at org.gradle.internal.service.ReflectionBasedServiceMethod.invoke(ReflectionBasedServiceMethod.java:34)at org.gradle.internal.service.DefaultServiceRegistry$FactoryMethodService.invokeMethod(DefaultServiceRegistry.java:899)... 204 more* Get more help at https://help.gradle.orgCONFIGURE FAILED in 7sFAILURE: Build failed with an exception.* What went wrong:Could not update D:\Study\hello-spring\.gradle\7.6.1\fileChanges\last-build.bin> D:\Study\hello-spring\.gradle\7.6.1\fileChanges\last-build.bin (??d?? �Ʃ�����? ?; ��?)* Try:> Run with --info or --debug option to get more log output.> Run with --scan to get full insights.* Exception is:org.gradle.api.UncheckedIOException: Could not update D:\Study\hello-spring\.gradle\7.6.1\fileChanges\last-build.binat org.gradle.api.internal.changedetection.state.FileTimeStampInspector.updateOnFinishBuild(FileTimeStampInspector.java:74)at org.gradle.api.internal.changedetection.state.BuildSessionScopeFileTimeStampInspector.beforeComplete(BuildSessionScopeFileTimeStampInspector.java:48)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:462)at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:444)at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:83)at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:69)at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:433)at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:421)at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:43)at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:66)at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:433)at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:221)at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:192)at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)at com.sun.proxy.$Proxy31.beforeComplete(Unknown Source)at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:124)at org.gradle.launcher.exec.RootBuildLifecycleBuildActionExecutor.execute(RootBuildLifecycleBuildActionExecutor.java:40)at org.gradle.internal.buildtree.DefaultBuildTreeContext.execute(DefaultBuildTreeContext.java:40)at org.gradle.launcher.exec.BuildTreeLifecycleBuildActionExecutor.lambda$execute$0(BuildTreeLifecycleBuildActionExecutor.java:65)at org.gradle.internal.buildtree.BuildTreeState.run(BuildTreeState.java:53)at org.gradle.launcher.exec.BuildTreeLifecycleBuildActionExecutor.execute(BuildTreeLifecycleBuildActionExecutor.java:65)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor$3.call(RunAsBuildOperationBuildActionExecutor.java:61)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor$3.call(RunAsBuildOperationBuildActionExecutor.java:57)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)at org.gradle.launcher.exec.RunAsBuildOperationBuildActionExecutor.execute(RunAsBuildOperationBuildActionExecutor.java:57)at org.gradle.launcher.exec.RunAsWorkerThreadBuildActionExecutor.lambda$execute$0(RunAsWorkerThreadBuildActionExecutor.java:36)at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:249)at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:109)at org.gradle.launcher.exec.RunAsWorkerThreadBuildActionExecutor.execute(RunAsWorkerThreadBuildActionExecutor.java:36)at org.gradle.tooling.internal.provider.continuous.ContinuousBuildActionExecutor.execute(ContinuousBuildActionExecutor.java:110)at org.gradle.tooling.internal.provider.SubscribableBuildActionExecutor.execute(SubscribableBuildActionExecutor.java:64)at org.gradle.internal.session.DefaultBuildSessionContext.execute(DefaultBuildSessionContext.java:46)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter$ActionImpl.apply(BuildSessionLifecycleBuildActionExecuter.java:100)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter$ActionImpl.apply(BuildSessionLifecycleBuildActionExecuter.java:88)at org.gradle.internal.session.BuildSessionState.run(BuildSessionState.java:69)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter.execute(BuildSessionLifecycleBuildActionExecuter.java:62)at org.gradle.tooling.internal.provider.BuildSessionLifecycleBuildActionExecuter.execute(BuildSessionLifecycleBuildActionExecuter.java:41)at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:63)at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:31)at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:52)at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:40)at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:47)at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:31)at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:65)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:39)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:29)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:35)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:78)at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:75)at org.gradle.util.internal.Swapper.swap(Swapper.java:38)at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:75)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:63)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:84)at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:52)at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:49)Caused by: java.io.FileNotFoundException: D:\Study\hello-spring\.gradle\7.6.1\fileChanges\last-build.bin (??d?? �Ʃ�����? ?; ��?)at org.gradle.api.internal.changedetection.state.FileTimeStampInspector.updateOnFinishBuild(FileTimeStampInspector.java:70)... 80 more* Get more help at https://help.gradle.orgBUILD FAILED in 7s이런식으로 계속 오류가나구요 자바버전도 11이고 부트 프로젝트 버전도 2.7.12 버전입니다왜안되는지 모르겠네요 ㅠㅠ 2023-05-31 오전 11시 04분 경 jdk 재설치하고 경로도 다바꿔줬는데 여전히안되네요...오후 16시 35분에 인텔리제이, jdk, 프로젝트 다 삭제하고 다시 다 깔아서 재시도했는데도 안되네요...

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.  package hello.hellospring.service;import hello.hellospring.domain.Member;import hello.hellospring.repository.MemoryMemberRepository;import org.junit.jupiter.api.AfterEach;import org.junit.jupiter.api.BeforeEach;import org.junit.jupiter.api.Test;import static org.assertj.core.api.Assertions.*;import static org.junit.jupiter.api.Assertions.*;import static org.junit.jupiter.api.Assertions.*;class MemberServiceTest {MemberService memberService; MemoryMemberRepository memberRepository; @BeforeEach public void beforeEach() {memberRepository = new MemoryMemberRepository(); memberService = new MemberService(memberRepository); }@AfterEach public void afterEach() {memberRepository.clearStore(); }@Test public void 회원가입() throws Exception {//Given Member member = new Member(); member.setName("hello");//When Long saveId = memberService.join(member);//Then Member findMember = memberRepository.findById(saveId).get(); assertEquals(member.getName(), findMember.getName()); }@Test public void 중복_회원_예외() throws Exception {//Given Member member1 = new Member(); member1.setName("spring"); Member member2 = new Member(); member2.setName("spring");//when memberService.join(member1); IllegalStateException e = assertThrows(IllegalStateException.class, () -> memberService.join(member2));//예외가 발생해야 한다. assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다."); assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다."); }} 이거 계속 오류나는데 왜그럴까요.org.opentest4j.AssertionFailedError: Expected java.lang.IllegalStateException to be thrown, but nothing was thrown. 이렇게 떠요  

assertThat import 안되는 문제선생님 안녕하세요. 이번에 새로 수강하고 있는 수강생입니다.프로젝트 다운 받고 실행을 시켜려고 하는데 실행이 안돼서 따로 설정해서 돌리고 있습니다.Junit5까지는 진행했지만 assertThat 코드를 호출하는 진도에서 실행이 안되고 있습니다.혹시 어떤 방법으로 해결 할 수 있을까요? 찾아도 안나오네요 ㅠㅜbuild.gradle.kts 파일입니다import org.jetbrains.kotlin.gradle.tasks.KotlinCompile plugins { id("org.springframework.boot") version "3.0.6" id("io.spring.dependency-management") version "1.1.0" id("java") id("org.jetbrains.kotlin.plugin.jpa") version "1.7.22" // id("org.jetbrains.kotlin.plugin.spring") version "1.7.22" id("org.jetbrains.kotlin.kapt") version "1.7.22" kotlin("jvm") version "1.7.22" kotlin("plugin.spring") version "1.7.22" } group = "com.example.kotlin" version = "0.0.1-SNAPSHOT" java.sourceCompatibility = JavaVersion.VERSION_17 configurations { compileOnly { extendsFrom(configurations.annotationProcessor.get()) } } repositories { mavenCentral() } dependencies { implementation("org.springframework.boot:spring-boot-starter-data-jpa") implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8") implementation("org.jetbrains.kotlin:kotlin-reflect:1.7.22") implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.13.3") implementation("org.junit.jupiter:junit-jupiter:5.8.1") implementation("com.querydsl:querydsl-jpa:5.0.0") kapt("com.querydsl:querydsl-apt:5.0.0:jpa") kapt("org.springframework.boot:spring-boot-configuration-processor") runtimeOnly("com.h2database:h2") testImplementation("org.assertj:assertj-core:3.21.0") implementation("org.springframework.boot:spring-boot-starter-web") implementation("org.springframework.boot:spring-boot-starter-web-services") implementation("com.fasterxml.jackson.module:jackson-module-kotlin") implementation("org.jetbrains.kotlin:kotlin-reflect") developmentOnly("org.springframework.boot:spring-boot-devtools") annotationProcessor("org.springframework.boot:spring-boot-configuration-processor") testImplementation("org.springframework.boot:spring-boot-starter-test") testImplementation(kotlin("test")) } tasks { test { useJUnitPlatform() } withType<KotlinCompile> { kotlinOptions { freeCompilerArgs = listOf("-Xjsr305=strict") jvmTarget = "17" } } withType<Test> { useJUnitPlatform() } }

연동을 다해놨는데, 스프링 실행할때 에러가 나네요.. 이유를 못찾겠습니다.구글 드라이브에 올릴게요강의는 회원등록 4분46초 부분 하고 있었습니다. https://drive.google.com/file/d/1Xes5ztWKL5s4NDre1bSuGeL2t-tbnJIO/view?usp=sharing 

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. 회원목록 조회시Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.Wed May 31 00:06:03 KST 2023There was an unexpected error (type=Internal Server Error, status=500).No message availablejava.lang.NullPointerException at hello.hellospring.controller.MemberController.list(MemberController.java:40) 라고 뜨며 아래는 MemberController 코드입니다 package hello.hellospring.controller; import hello.hellospring.domain.Member; import hello.hellospring.service.MemberService; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; @Controller public class MemberController { private final MemberService memberService; @Autowired public MemberController(MemberService memberService) { this.memberService = memberService; } @GetMapping("/members/new") public String createForm() { return "members/createMemberForm"; } @PostMapping("/members/new") public String create(MemberForm form) { Member member = new Member(); member.setName(form.getName()); memberService.join(member); return "redirect:/"; } @GetMapping("/members") private String list(Model model) { List<Member> members = memberService.findMembers(); model.addAttribute("members", members); return "members/memberList"; } } 

안녕하세요 선생님41강 아이디 중복확인 섹션에서 Interface인 MemberMapper.java 에서public Member registerCheck(String memID);위처럼 선언해주었고,MemberMapper.xml 에서<select id="registerCheck" resultType="srv.ges.entity.Member">SELECT * FROM mem_tbl WHERE memID = #{memID} </select>위처럼 select문에 resultType만 작성하셨는데,'memID'를 Parameter로 넘기니 ParameterType도 작성해야 하는 것 아닌가요? 

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예[질문 내용]영한님께서 이번 강의에서 트랜잭션 프록시 객체에서 외부메서드를 호출하고, 진짜 객체의 외부 메서드에서 자기 자신의 내부 메서드를 호출할 때 내부 메서드에는 @Transactional을 설정해도 트랜잭션이 적용되지 않는 점 이해 했습니다. 강의에서 이 부분을 해결하기 위해 별도의 클래스를 만들고, Bean으로 주입(이 경우 프록시객체가 Bean으로 등록)해서 프록시 객체가 @Transactional 메서드를 호출하는 방식으로 해결하는 점도 이해했습니다. 스프링 MVC강의에서 빈 스코프 문제(프로토타입과 싱글톤 Bean을 같이 사용할 때 문제점)을 해결하기 위해 Dependency Lookup을 사용하신 방법이 떠올라 V3테스트코드를 작성해보았습니다. @Slf4j @SpringBootTest public class InternalCallV3Test { @Autowired CallServie callServie; @Test void printProxy() { log.info("callService class={}", callServie.getClass()); } @Test void internalCall() { callServie.internal(); } @Test void externalCall() { callServie.external(); } @TestConfiguration static class InternalCallV1TestConfig { @Bean CallServie callServie() { return new CallServie(); } } @Slf4j static class CallServie { @Autowired private ObjectProvider<CallServie> selfProvider; public void external() { log.info("call external"); printTxInfo(); CallServie self = selfProvider.getObject(); log.info("self class={}", self.getClass()); self.internal(); } @Transactional public void internal() { log.info("call internal"); printTxInfo(); } private void printTxInfo() { boolean txActive = TransactionSynchronizationManager.isActualTransactionActive(); log.info("tx active={}", txActive); boolean readOnly = TransactionSynchronizationManager.isCurrentTransactionReadOnly(); log.info("tx readOnly={}", readOnly); } } } 실행 결과는 다음과 같습니다.DL을 이용해서 스프링 컨테이너에서 프록시를 가져와서, 프록시의 메서드를 호출하면 트랜잭션이 적용되는 것 처럼 보입니다. 질문1) 이 방법으로 트랜잭션이 적용되는게 맞을까요?2) 이 방법을 혹시 스프링-고급편에서 다루나요?3) 1번 질문이 맞다면 클래스를 새로 만들고, 메서드를 옮기는 비용보다 DL로 프록시객체를 찾아오는 비용이 더 쌀 것 같은데, 둘 중 어느 방법이 선호되는 편인가요? 

낙관 락과 비관 락을 정확히 언제 사용하는지 궁금한데요, 충돌이 잦을 때는 비관 락을 사용한다고 이해하기엔 막연한 느낌이 있어서요, 혹시 실무에서 구체적인 예시를 들어주실 수 있을까요??비관적 락이 구현이 훨씬 간단할 것 같은데, 실제로 실무에서 비관적 락이 아닌 낙관적 락을 직접 구현해서 사용할 일이 있는지도 궁금합니다.충돌이 빈번하게 일어난다면 비관적 락이 더 적합할 수 있다고 하셨는데 이유가 뭔가요? 어떤 부분에서 성능상 이점이 있는지 궁금합니다. 자세하게 설명해주시면 정말 감사할 것 같습니다. 감사합니다!!

실무에서spring.jpa.open-in-view: false로 설정하는 경우가 많은가요 ? 또한 사이드 프로젝트 정도로 규모가 작을 경우그냥 기본 설정대로 true로 사용해도 되나요 ?

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 아니오3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예[질문 내용]트랜잭셔널 어노테이션을 레포지토리나 컨트롤러가 아니라 서비스에 붙이는 이유가 있나요?

강의 그대로 코드 받아 적었는데 캐시 삭제 등 여러 방법 찾아서 해봤는데도 안되네요;;로컬에선 적용이 됩니다.   해결했습니다<th:href>문을 빼고 실행했더니 제대로 나와서 다시 넣고 실행했더니 올바르게 적용이 되네요   

스프링이 제공하는 기능이 아니라 제가 직접해줘야하는건가요? 영속성 컨텍스트가 일정이상 차면 비워주는 작업을 어떻게 할 수 있을까요?코드가 나와있긴하지만 그 코드는 너무 로우 레벨아닌가요?? SPRING DATA JPA사용하면서 em을 직접적으로 사용하진 않잖아요..자동으로 해주는건가요...?