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/아)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]여기에 질문 내용을 남겨주세요.boot '3.0.3'버전java17 버전 이용중입니다.java/hello/hellospring/controller/HelloControllerresources/static/index.htmlresources/templates/hello.html소스는 전부 교재에서 복붙하고 서버 실행 후http://localhost:8080/hello보면 이렇게 뜨네요 ㅠㅠ 

스프링부트 툴 4인텔리제이 무료버전이 아니라 spring boot 툴 사용해도됩니까? 

 안녕하세요. asw ec2에서 코드 가져올때, 처음에 git clone 으로 git에 있는 소스 전체를 가져왔는데요, 이후에 수정된 파일을 배포할때도, git clone으로 하면되나요?아니면 다른 명령어가 있는건가요.?

package com.example.velog.domain; import lombok.Builder; import lombok.Getter; import lombok.Setter; import lombok.ToString; import org.springframework.web.multipart.MultipartFile; import javax.validation.constraints.Email; import javax.validation.constraints.NotBlank; import javax.validation.constraints.Pattern; @Getter @ToString public class UserDTO { private Long userId; @NotBlank(message = "이메일은 필수 입력사항 입니다.") // 이메일 형식이여야 함 @Pattern(regexp = "^(?:\\w+\\.?)*\\w+@(?:\\w+\\.)+\\w+$", message = "이메일 형식이 올바르지 않습니다.") @Email(message = "이메일 형식에 맞지 않습니다.") private String userEmail; @NotBlank(message = "비밀번호는 필수 입력 값입니다.") @Pattern(regexp = "(?=.*[0-9])(?=.*[a-zA-Z])(?=.*\\\\W)(?=\\\\S+$).{8,20}", message = "비밀번호는 영문 대,소문자와 숫자, 특수기호가 적어도 1개 이상씩 포함된 8자 ~ 20자의 비밀번호여야 합니다.") private String userPw; @NotBlank(message = "이름은 필수 입력사항 입니다.") private String userName; @NotBlank(message = "주소는 필수 입력사항 입니다.") private String userAddr; @NotBlank private String userAddrDetail; @NotBlank private String userAddrEtc; private MultipartFile userImg; @Builder public UserDTO( String userEmail, String userPw, String userName, String userAddr, String userAddrDetail, String userAddrEtc, MultipartFile userImg) { this.userEmail = userEmail; this.userPw = userPw; this.userName = userName; this.userAddr = userAddr; this.userAddrDetail = userAddrDetail; this.userAddrEtc = userAddrEtc; this.userImg = userImg; } }UserDTO에 유효성 검사를하려고 어노테이션을 사용했고 setter을 빼고 @Builder을 사용했습니다. 근데 여기서 의문점이 생겼습니다. 유효성 검사를 사용하고 컨트롤러에서 @Valid나 @Validated를 사용할 때 유효성 검사가 있는 DTO에 예를들어 @Vlidated UserDTO userDTO 이런식으로 쓰는걸로 알고 있는데 setter을 빼고 @Builder을 사용해서 view에서 form action으로 보내줘도 setter로는 못받고 builder가 받는 식인 예를들어String email = "zsaez45@naver.com"; String password = "Dkdms147!"; String name = "테스터"; String addr = "서울시 xxxx xxx"; String addrDetail = "xxxx"; String addrEtc = "2층"; UserDTO p1 = UserDTO.builder() .userEmail(email) .userPw(password) .userName(name) .userAddr(addr) .userAddrDetail(addrDetail) .userAddrEtc(addrEtc) .build();이렇게 받는걸로 알고 있습니다. 그러면 view에서 보내준 것을 컨트롤러에서 받으려면 하나하나 풀어보 받아야하나요? 어떤식으로 받을 수 있죠? @Builder을 사용하려니 어렵네요;;

안녕하세요. 모임 만들기 페이지에서 시간을 설정할 때,연월일 제외하고 시간만 입력하려면 어떻게 하면 되는지요?fragments.html 의 <div th:fragment="event-form (mode, action)"> 에서<input id="endEnrollmentDateTime" type="datetime-local"의 type 부분을 type="time" 으로 하고Event 클래스에서 private LocalDateTime endEnrollmentDateTime;을private DateTime endEnrollmentDateTime;로 변경하고 실행하면 html 상에서는 시간이 입력되나,DB 에는 insert 되어 있지 않습니다.어떻게 하면 가능한지요?자세한 설명 부탁드립니다. 그리고, 제공해 주신 소스를 다운로드해서 프로젝트를 실행한 후, 오른쪽 드롭다운 메뉴 중스터디를 클릭해도 아무 동작이 일어나지 않습니다.소스를 보면<a class="dropdown-item" >스터디</a>이렇게만 나와있고 th:href="@{}" 로 연결된 페이지가 없습니다.이 부분 기능 구현은 안 해 놓으신 건지요? 프로필 페이지에서도왼쪽 프로필 사진 밑에 있는스터디 버튼을 누르면 Study 라고만 나오고별다른 페이지가 나오지 않습니다.이 부분도 기능 구현은 안 해 놓으신 건지요?  

오류가 뜨는데 강의 코드랑은 똑같이 쳤고, 오류 코드 찾아봐도 해결이 안되서 질문합니다!오류 코드:2023-02-25 17:11:35.867 INFO 18568 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Began transaction (1) for test context [DefaultTestContext@4d4d48a6 testClass = MemberRepositoryTest, testInstance = jpabook.jpashop.MemberRepositoryTest@637c8632, testMethod = testMember@MemberRepositoryTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@315df4bb testClass = MemberRepositoryTest, 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$DisableMetricExportContextCustomizer@726e5805, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@5b07730f, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@f73dcd6, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@30d4b288, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@4a3329b9, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@407a7f2a], 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]]; transaction manager [org.springframework.orm.jpa.JpaTransactionManager@3adeca1f]; rollback [false]2023-02-25 17:11:36.439 DEBUG 18568 --- [ Test worker] org.hibernate.SQL : call next value for hibernate_sequencefindMember == member : true2023-02-25 17:11:36.739 DEBUG 18568 --- [ Test worker] org.hibernate.SQL : insert into member (username, id) values (?, ?)2023-02-25 17:11:36.744 WARN 18568 --- [ Test worker] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Error: 42122, SQLState: 42S222023-02-25 17:11:36.744 ERROR 18568 --- [ Test worker] o.h.engine.jdbc.spi.SqlExceptionHelper : Column "USERNAME" not found; SQL statement:insert into member (username, id) values (?, ?) [42122-214]2023-02-25 17:11:36.823 WARN 18568 --- [ Test worker] o.s.test.context.TestContextManager : Caught exception while invoking 'afterTestMethod' callback on TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener@54a3ab8f] for test method [public void jpabook.jpashop.MemberRepositoryTest.testMember() throws java.lang.Exception] and test instance [jpabook.jpashop.MemberRepositoryTest@637c8632]org.springframework.dao.InvalidDataAccessResourceUsageException: could not prepare statement; SQL [insert into member (username, id) values (?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259) ~[spring-orm-5.3.25.jar:5.3.25] at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233) ~[spring-orm-5.3.25.jar:5.3.25] at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:566) ~[spring-orm-5.3.25.jar:5.3.25] at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) ~[spring-tx-5.3.25.jar:5.3.25] at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) ~[spring-tx-5.3.25.jar:5.3.25] at org.springframework.test.context.transaction.TransactionContext.endTransaction(TransactionContext.java:131) ~[spring-test-5.3.25.jar:5.3.25] at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:255) ~[spring-test-5.3.25.jar:5.3.25] at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:445) ~[spring-test-5.3.25.jar:5.3.25] at org.springframework.test.context.junit.jupiter.SpringExtension.afterEach(SpringExtension.java:206) ~[spring-test-5.3.25.jar:5.3.25] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAfterEachCallbacks$12(TestMethodTestDescriptor.java:257) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$13(TestMethodTestDescriptor.java:273) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$14(TestMethodTestDescriptor.java:273) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAllAfterMethodsOrCallbacks(TestMethodTestDescriptor.java:272) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAfterEachCallbacks(TestMethodTestDescriptor.java:256) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:141) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$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$3.run(TestWorker.java:193) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) ~[na:na] at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) ~[na:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) ~[gradle-worker.jar:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) ~[gradle-worker.jar:na]Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:81) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.buildBatchStatement(AbstractBatchImpl.java:142) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.getBatchStatement(AbstractBatchImpl.java:131) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3356) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3937) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:na] at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:489) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3303) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2438) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ~[spring-orm-5.3.25.jar:5.3.25] ... 77 common frames omittedCaused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "USERNAME" not found; SQL statement:insert into member (username, id) values (?, ?) [42122-214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:502) ~[h2-2.1.214.jar:2.1.214] at org.h2.engine.SessionRemote.readException(SessionRemote.java:637) ~[h2-2.1.214.jar:2.1.214] at org.h2.engine.SessionRemote.done(SessionRemote.java:606) ~[h2-2.1.214.jar:2.1.214] at org.h2.command.CommandRemote.prepare(CommandRemote.java:78) ~[h2-2.1.214.jar:2.1.214] at org.h2.command.CommandRemote.<init>(CommandRemote.java:50) ~[h2-2.1.214.jar:2.1.214] at org.h2.engine.SessionRemote.prepareCommand(SessionRemote.java:480) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1116) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:92) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:288) ~[h2-2.1.214.jar:2.1.214] at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:337) ~[HikariCP-4.0.3.jar:na] at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-4.0.3.jar:na] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:90) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] ... 100 common frames omittedcould not prepare statement; SQL [insert into member (username, id) values (?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statementorg.springframework.dao.InvalidDataAccessResourceUsageException: could not prepare statement; SQL [insert into member (username, id) values (?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement at app//org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259) at app//org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233) at app//org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:566) at app//org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) at app//org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) at app//org.springframework.test.context.transaction.TransactionContext.endTransaction(TransactionContext.java:131) at app//org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:255) at app//org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:445) at app//org.springframework.test.context.junit.jupiter.SpringExtension.afterEach(SpringExtension.java:206) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAfterEachCallbacks$12(TestMethodTestDescriptor.java:257) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$13(TestMethodTestDescriptor.java:273) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$14(TestMethodTestDescriptor.java:273) at java.base@11.0.16.1/java.util.ArrayList.forEach(ArrayList.java:1541) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAllAfterMethodsOrCallbacks(TestMethodTestDescriptor.java:272) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAfterEachCallbacks(TestMethodTestDescriptor.java:256) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:141) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base@11.0.16.1/java.util.ArrayList.forEach(ArrayList.java:1541) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base@11.0.16.1/java.util.ArrayList.forEach(ArrayList.java:1541) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$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 org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base@11.0.16.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11.0.16.1/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at com.sun.proxy.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement at app//org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) at app//org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37) at app//org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:81) at app//org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.buildBatchStatement(AbstractBatchImpl.java:142) at app//org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.getBatchStatement(AbstractBatchImpl.java:131) at app//org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3356) at app//org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3937) at app//org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107) at app//org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) at app//org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) at java.base@11.0.16.1/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) at app//org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) at app//org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) at app//org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) at app//org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) at app//org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) at app//org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:489) at app//org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3303) at app//org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2438) at app//org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) at app//org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) at app//org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) at app//org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) at app//org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) at app//org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ... 77 moreCaused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "USERNAME" not found; SQL statement:insert into member (username, id) values (?, ?) [42122-214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:502) at org.h2.message.DbException.getJdbcSQLException(DbException.java:477) at org.h2.message.DbException.get(DbException.java:223) at org.h2.message.DbException.get(DbException.java:199) at org.h2.table.Table.getColumn(Table.java:749) at org.h2.command.Parser.parseColumn(Parser.java:1256) at org.h2.command.Parser.parseColumnList(Parser.java:1241) at org.h2.command.Parser.parseInsert(Parser.java:1641) at org.h2.command.Parser.parsePrepared(Parser.java:814) at org.h2.command.Parser.parse(Parser.java:689) at org.h2.command.Parser.parse(Parser.java:661) at org.h2.command.Parser.prepareCommand(Parser.java:569) at org.h2.engine.SessionLocal.prepareLocal(SessionLocal.java:631) at org.h2.server.TcpServerThread.process(TcpServerThread.java:288) at org.h2.server.TcpServerThread.run(TcpServerThread.java:191) at java.base/java.lang.Thread.run(Thread.java:834) at app//org.h2.message.DbException.getJdbcSQLException(DbException.java:502) at app//org.h2.engine.SessionRemote.readException(SessionRemote.java:637) at app//org.h2.engine.SessionRemote.done(SessionRemote.java:606) at app//org.h2.command.CommandRemote.prepare(CommandRemote.java:78) at app//org.h2.command.CommandRemote.<init>(CommandRemote.java:50) at app//org.h2.engine.SessionRemote.prepareCommand(SessionRemote.java:480) at app//org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1116) at app//org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:92) at app//org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:288) at app//com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:337) at app//com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:90) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ... 100 more  package jpabook.jpashop; import org.junit.jupiter.api.Assertions; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.annotation.Rollback; import org.springframework.transaction.annotation.Transactional; @SpringBootTest public class MemberRepositoryTest { @Autowired MemberRepository memberRepository; @Test @Transactional @Rollback(false) public void testMember() throws Exception{ //given Member member= new Member(); member.setUsername("memberA"); Long savedId = memberRepository.save(member); //when Member findMember = memberRepository.find(savedId); //then Assertions.assertEquals(findMember.getId(), member.getId()); Assertions.assertEquals(findMember.getUsername(), member.getUsername()); Assertions.assertEquals(findMember, member); System.out.println("findMember == member : " + (findMember == member)); } }  package jpabook.jpashop; //Ropository: entity 찾아줌 import org.springframework.stereotype.Repository; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; @Repository public class MemberRepository { @PersistenceContext EntityManager em; public Long save(Member member){ em.persist(member); return member.getId(); } public Member find(Long id) { return em.find(Member.class, id); } }  package jpabook.jpashop; import lombok.Getter; import lombok.Setter; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Getter @Setter @Entity public class Member { @Id @GeneratedValue private Long id; private String username; } spring: datasource: url: jdbc:h2:tcp://localhost/~/jpashop username: sa password: driver-class-name: org.h2.Driver jpa: hibernate: ddl-auto: create properties: hibernate: # show_sql: true format_sql: true logging.level: org.hibernate.SQL: debug학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요.

안녕하세요:) 강의 예제중 양궁 국가대표 선발전 부분에서 질문드립니다. 다름이 아니라 토탈포인트 계산 부분에서 sum= sum + points[i]가 실행되는데 왜 누적값이 되는게 아닌지 궁금합니다!

첫번째 PostMapping 으로 했을때 값 등록은 잘되는데 406 에러가 나옵니다.두번째 update 할때는 값도 변경안되고 404 에러가 납니다..

안녕하세요 ㅎㅎ코틀린 강의 잘 듣고 있습니다. 12강에 자바에서 Movable 인터페이스를 new Movable로 인스턴스화 시켰는데.. 인터페이스는 인스턴스 객체로 만들수 없는거 아닌가요?? 헷갈려서 질문드립니다. 감사합니다.

안녕하세요 영한님!질문드립니다.  고아 객체는 부모 엔티티와 연관관계가 끊어진 자식 엔티티 라고 이해했습니다.고아 객체가 생성되는 조건은부모 엔티티 삭제부모 엔티티가 삭제 되면 자식 엔티티를 고아객체로 판단 합니다.e.g) em.remove(parent); 부모 엔티티에 있는 자식 엔티티 컬렉션 제거연관관계가 끊어진 자식 객체를 고아객체로 판단 합니다.e.g) parent.getChild().remove(0); 결과적으로 orphanRemoval = true를 설정하면자식 엔티티(고아 객체)는 부모 엔티티와 함께 삭제 되거나자식 엔티티(고아 객체)만 삭제 된다. 맞게 이해하고 있는 것 일까요? 감사합니다.^^

강사님 마구간 문제에서, mid = 5 경우에 9번 마구간에 말을 배치하지 못한다고 말씀하셨는데, 그 이유는 문제에 어떤 부분에 포함되어있는 걸까요??각각의 말이 위치한 거리가 5를 넘어야 되는건가요????

 강사님 지금 제 컴퓨터에 jdk 1.8이 설치되어 있고, 사용중이라 이번 강의도 1.8로 진행해도 되는지 궁금합니다.build.gradle에서 sourceCompatibility = '11' -> sourceCompatibility = '1.8'로 바꾸니 실행은 되는데 계속 이렇게 설정해서 수업을 들어도 될까요?

임시반장 정하기 문제에서import java.util.Scanner; public class Main { private static void solution (int num, int[][] arr){ int[][] test_arr = new int[num][5]; int[] result = new int[num]; for (int i = 0; i < 5; i++) { for (int j = 0; j < num-1; j++) { for (int k = j+1; k < num; k++) { if (arr[j][i] == arr[k][i]){ test_arr[j][i] = 1; test_arr[k][i] = 1; } } } } int result_index =0; int max = 0; for (int i = 0; i < num; i++) { for (int j = 0; j < num; j++) { if(test_arr[i][j] != 0){ result[i] += test_arr[i][j]; } } if (result[i] > max){ max = result[i]; result_index = i+1; } } System.out.println(result_index); } public static void main(String[] args) { Main T = new Main(); Scanner sc = new Scanner(System.in); int num = Integer.parseInt(sc.nextLine()); int[][] arr = new int[num][5]; for (int i = 0; i < num; i++) { String[] temp = sc.nextLine().split(" "); for (int j = 0; j < 5; j++) { arr[i][j] = Integer.parseInt(temp[j]); } } T.solution(num, arr); } }이런식으로 3개의 for문을 써서 해결했는데요 테스트케이스들은 다 통과하는데이라고 뜨네요 왜인지 이유를 모르겠습니다...

 안녕하세요 공부하는 개발자 최태현님!친절 + 자세한 강의 재미있게 잘 듣고 있습니다 ㅎㅎ7강 초반을 듣는 중에 문득 궁금한 점이 생겼는데요,아마 후반에 나올수도 있는 문의라 질문드리기 이른 감이 있지않나 싶지만.. 여튼 바로 질문 드려볼게요가장 먼저 API를 설계해야 한다!: 클라이언트+서버 개발자분들이 모여 API에 대해 의논,설계,확정하곤 한다 라고 말씀해주셨는데, 현재 태현님 강의에서는 아무래도 클라이언트 부분이 만들어져있는 상태로, 서버에 집중하자는 취지로 진행중이다보니.. 실제 현업에서는 API를 위와 같이 먼저 확정 단계까지 마친 후, 클라이언트와 서버 개발자분들이 확정된 API 약속을 토대로 각자 업무를 진행하며 서로 체크해나가며 개발하는? 그런 흐름인지 궁금하네요 !(비단 이 강의 뿐만 아니라, 다른 수업이나 인터넷 자료들도 대부분 짜여진 코드들을 가지고 공부를 하는 입장이다보니 실제로 토이프로젝트나 뭔가를 스스로 직접 만들어볼때 어디서부터 시작해야할지,, 조금은 막막한 심정도 있는 부분입니다) 제가 공부 시작한지 얼마 안된 초보이다보니,, 질문이나 용어 조차도 서툴러서 요점이 잘 전달 되었을지 모르겠네요그럼, 멋지고 젠틀하신 태현님의 답변을 기다리며 7강과 뒷부분들 계속 진행하고 있을게요~긴 질문 글을 읽어주시고 답변 주셔서 미리 감사드립니다.행복하세요!

안녕하세요 강사님강의 문서 오타 제보 드립니다.P23api/v1/orders 처럼List<Order> orders = orderRepository.findAllByString(new OrderSearch());이 되어야 할 것 같습니다.감사합니다.

안녕하세요 선생님, 다름이 아니라 제가 지난 String[], String, charAt, length와 관련된 질문 이후로 문자열(String)을 계속 공부하면서 막히는 것이 조금 있어 이렇게 질문을 남깁니다.아래 코드에서 제가 간단하게 System.out.println(); 명령문으로 아래 문장들을 출력해봤습니다:결과 (1)에서는 "Hello, "와 "World!" 2개의 단어가 합쳐져서 문장 Hello, World!가 출력이 되고, 결과 (2)에서는 Route 12가 아닌, Route 66으로, 결과 (3)에서는 25 years old 이라고 출력이 되는데, 이렇게 되는 이유가 System.out.println(); 명령문의 괄호 안에 쓰여진 문장들이 기본적으로 String으로 간주하여 결과를 출력하고, 만일 숫자가 먼저 온다면 int로 인지해서 결과를 먼저 받은 다음, + 기호를 통해 문자열을 출력해서 그런 건가요? 혹여나 시간이 되신다면, 선생님으로부터 답변을 받았으면 좋겠습니다! 지난 번 QNA가 너무 좋아서 아직도 기억에 남네요..ㅎ 미리 감사합니다 :)

 안녕하세요 태현님 강의 재밌게 보고 있습니다.다름이 아니고뷰를 조금 제가 생각하는 요구사항에 맞게 커스텀을 하고 싶은데 리액트 js 파일이 압축되어서 저장되어 있어서 직접 뷰까지 구성을 하신건지 뭔가 스크립트를 자동으로 구성해주는 툴을 사용하시는 건지 궁금합니다ㅠ

안녕하세요,아래 강의 시간대에 상품 주문 여러개 하기 위해서 상품을 추가, 삭제하고 하는 부분 UI 구성 코드(validation 부분까지도여)로 남겨주실수 있을까요?강의 챕터: 상품주문시간: 7분 58초

import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; public class Inflearn26 { public ArrayList<Integer> solution(int N, int[] A, int M, int[] B) { ArrayList<Integer> answer = new ArrayList<>(); for(int i=0; i<A.length; i++) { for(int j=0; j<B.length; j++) { if(A[i] == B[j]) { answer.add(A[i]); break; // 원소 중복을 허용하지 않음으로 공통원소를 찾으면 반복문 종료 } } } Collections.sort(answer); // Arrays.sort() 는 '배열'의 오름차순 정렬 return answer; } public static void main(String[] args) { Inflearn26 inflearn26 = new Inflearn26(); Scanner scanner = new Scanner(System.in); int N = scanner.nextInt(); int[] A = new int[N]; for(int i=0; i<N; i++) { A[i] = scanner.nextInt(); } int M = scanner.nextInt(); int[] B = new int[M]; for(int i=0; i<N; i++) { B[i] = scanner.nextInt(); } for(int x : inflearn26.solution(N,A,M,B)) { System.out.print(x + " "); // 공통 원소 출력 // 이 방법은 시간초과 걸림 } } }로 풀었는데 시간초과 오류가 뜹니다.어떤식으로 풀어야 해결이 가능한지 궁금합니다 .

강의를 보면서 혼자 정말 여러 번 코드를 고쳐봤지만 도저히 원인을 알 수가 없어서 질문드립니다.https://www.inflearn.com/questions/792196/%EA%B0%95%EC%9D%98-%EB%93%A4%EC%9C%BC%EB%A9%B4%EC%84%9C-%EC%9D%91%EC%9A%A9%ED%95%B4%EC%84%9C-%ED%85%8C%EC%8A%A4%ED%8A%B8%EB%A5%BC-%EC%9E%91%EC%84%B1%ED%95%98%EA%B3%A0-%EC%9E%88%EB%8A%94%EB%8D%B0-%EC%9E%90%EA%BE%B8-null%EC%9D%B8-%EC%83%81%ED%83%9C%EB%9D%BC%EA%B3%A0-%ED%95%B4%EC%84%9C-%EC%A7%88%EB%AC%B8%EB%93%9C%EB%A6%BD%EB%8B%88%EB%8B%A4이 글에 대한 답변 좀 주실 수 있을까요...?