Jpa save할때 update가 왜안될까요? 코드추가합니당.

Question

org.springframework.dao.InvalidDataAccessApiUsageException: Multiple representations of the same entity [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity#91] are being merged. Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@71099f46]; Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@6c249a56]; nested exception is java.lang.IllegalStateException: Multiple representations of the same entity [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity#91] are being merged. Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@71099f46]; Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@6c249a56] at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:371) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:257) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:528) at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:178) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) at com.sun.proxy.$Proxy260.save(Unknown Source) at com.tqsoft.tqcore.service.TQERP.ErpDocumentServiceImpl.saveDocuments(ErpDocumentServiceImpl.java:183) at com.tqsoft.tqcore.service.TQERP.ErpDocumentServiceImpl$$FastClassBySpringCGLIB$$48c41750.invoke() at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:769) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) at com.tqsoft.tqcore.service.TQERP.ErpDocumentServiceImpl$$EnhancerBySpringCGLIB$$3121a69a.saveDocuments() at com.tqsoft.tqcore.controller.TQERP.ErpDocController.docuSave(ErpDocController.java:158) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalStateException: Multiple representations of the same entity [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity#91] are being merged. Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@71099f46]; Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity@6c249a56] at org.hibernate.event.internal.EntityCopyNotAllowedObserver.entityCopyDetected(EntityCopyNotAllowedObserver.java:45) at org.hibernate.event.internal.MergeContext.put(MergeContext.java:245) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:322) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:795) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:768) at org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:261) at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:492) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:416) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:218) at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:525) at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:456) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:419) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:218) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:151) at org.hibernate.event.internal.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:519) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:346) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:795) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:768) at org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:261) at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:492) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:416) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:218) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:151) at org.hibernate.event.internal.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:519) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:346) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:70) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:108) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:775) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:762) at sun.reflect.GeneratedMethodAccessor718.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:314) at com.sun.proxy.$Proxy126.merge(Unknown Source) at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:557) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:371) at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:204) at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:657) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:621) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:605) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) erpSeniorDocumentsEntity = erpSeniorDocumentsRepository.findErpSeniorDocumentsEntityByErpUserEntityAndKind(erpUserEntity, kind); erpSeniorDocumentsEntity = ErpSeniorDocumentsDto.docSave(documentRequest, erpSeniorDocumentsEntity); erpSeniorDocumentsEntity.setStatus(documentRequest.getStatus() != null ? documentRequest.getStatus() : DocumentStatus.DOCUMENT_STATUS_WRITING); erpSeniorDocumentsEntity.setErpUserEntity(erpUserEntity); erpSeniorDocumentsEntity.setUsersId(documentRequest.getUsersId() > 0 ? documentRequest.getUsersId() : 0); erpSeniorDocumentsEntity.setEntId(documentRequest.getEntId() > 0 ? documentRequest.getEntId() : 0); erpSeniorDocumentsEntity.setSalesId(documentRequest.getSalesId() <= 0 ? 0 : documentRequest.getSalesId()); erpSeniorDocumentsEntity.setGovEntId(documentRequest.getGovEntId() > 0 ? documentRequest.getGovEntId() : 0); erpSeniorDocumentsEntity.setKind(isNullDocFlag ? kind : erpSeniorDocumentsEntity.getKind()); erpSeniorDocumentsEntity.setRegNumber(documentRequest.getRegNumber()); erpSeniorDocumentsEntity.setRegDate(new Date()); // erpSeniorDocumentsEntity.setId(id > 0 ? id : 0); erpSeniorDocumentsEntity.setFileImage(imageString); erpSeniorDocumentsEntity = erpSeniorDocumentsRepository.save(erpSeniorDocumentsEntity); ObjectMapper mapper = new ObjectMapper(); mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false); mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS,false); erpSeniorDocumentsEntity = mapper.convertValue(documentRequest, ErpSeniorDocumentsEntity.class); return erpSeniorDocumentsEntity; documentRequest에는 entity와 필드가 맞는애들이 들어옵니다(수정값이 들어오는겁니다)그걸 convertValue를 통해 기존 엔티티에 덮에 씌우고 리턴을 해주는데save시 에러가 발생합니다 ㅠㅠid가 같은 엔티티를 저장시키려고한다는 에러인데id가 같은거까지 확인했는데 왜 jpa save시 update가 발생하지 않을까요?ㅠ

웅깅카 · Answer

id셋팅하는곳에 주석친이유는프론트에서 id값을 받아와서 주석을 쳤습니다

웅깅카 · Answer

3번째 코드가 docSave의 메소드 안의 코드입니다근데 파라미터 2번째로 받은 entity가 사용이 안된 entity라고 회색이더라구요 ㅠㅠ

cube8540 · Answer

convertValue를 이용하면 기존 객체가 아닌 새 객체가 만들어지고 해당 객체를 save 하게 되면 업데이트가 아닌 삽입이 발생합니다. 그런데 위에서 한번 같은 아이디를 가진 엔티티를 로딩 시켰으니 이미 데이터베이스엔 같은 아이디를 가진 엔티티가 있다는 것이고 convertValue를 이용해 만든 같은 아이디를 가진 엔티티를 또 다시 삽입하려는 행동을 해서 발생한 에러로 생각 됩니다. convertValue가 아닌 로딩 시킨 엔티티에 setter등을 이용하여 데이터를 업데이트 하면 해결될거 같습니다. https://okky.kr/article/378569 구글에 검색을 해보니 예전에 같은 질문이 올라온적이 있고 설명 또한 댓글에 알아보기 쉽게 적혀있네요.

웅깅카 · Answer

&#64;cube8540이전에 작업할때는 문제가 없었늗네 ㅠㅠ갑자기 이러니 당황스럽네요어제 에러 분석결과 결국엔 convertValue할때 주소값이 바껴서 그런건 알고있었는데기존엔 왜 됐던걸까에 의문을 가지게 되더라구요... 결국엔 setter를 통한거밖에없을까요?필드가 워낙 많고 전체 필드 수정을 하는게 아니라서요 ㅠㅠ

연습용더미1 · Answer

전체 수정이 아니라면 &#64;DynamicUpdate 써보셨나요? 저는 이걸 안써봐서 잘 알지는 못하는데 필요한 컬럼만 업데이트하는 경우에 쓴다고 하더군요.

웅깅카 · Answer

&#64;연습용더미1한번 찾아보고 공부해보겠습니다!!감사합니다!!

cube8540 · Answer

그렇다면 Spring Data JPA의 Repository.save 메소드가 아닌 EntityManager의 merge 메소드를 사용해보세요.

웅깅카 · Answer

&#64;cube8540entityManager로 find해서 찾아오고결국 컨버트벨류쓰면 주소값이바껴서merge를 해도 똑같네용..ㅎㅎㅎ 그냥 하나하나 setter를 해주렵니당 맘편히

제타건담 · Answer

Multiple representations of the same entity [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity#91] are being merged. Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity&#64;71099f46]; Detached: [com.tqsoft.tqcore.model.TQERP.ErpSeniorDocumentsEntity&#64;6c249a56] 이게 모든걸 말해주네요..Entity와 영속성 컨텍스트를 이해하시면 이 문제는 해결할 수 있습니다 erpSeniorDocumentsEntity &#61; erpSeniorDocumentsRepository.findErpSeniorDocumentsEntityByErpUserEntityAndKind(erpUserEntity, kind); 이 코드로 인해 영속 컨텍스트에 A 테이블(엔티티 코드가 없어서 A 테이블이라 하겠습니다)과 매핑된 엔티티 객체가 생성 될겁니다..근데 Mapper를 통해 객체를 만들게 되면..erpSeniorDocumentsEntity &#61; mapper.convertValue(documentRequest, ErpSeniorDocumentsEntity.class);영속성 컨텍스트에는 최종적으로는 같은 Key 값을 가진 엔티티 객체 2개가 만들어지는 겁니다. 하나는 조회되었을 당시의 객체, 또 하나는 convertValue 메소드를 통해 생성된 엔티티 객체여기서 최종적..이라고 말씀드린 이유는 이 코드를 실행한 시점에서는 영속성 컨텍스트에 객체가 등록되지는 않으나 save 메소드를 실행하는 시점에는 이 객체가 영속성 컨텍스트에 등록되기 때문입니다..&#61; 로 해도 이것은 해당 변수의 객체 참조 값이 바뀌는 것이지 객체 자체가 덮어 씌워지는 것이 아닙니다..이 부분을 해결할려면 convertValue 메소드를 실행하기 전에 erpSeniorDocumentsEntity 를 준영속(detach) 상태로 만들어서 영속성 컨텍스트가 관리하는 객체가 아닌 걸로 설정한뒤 erpSeniorDocumentsEntity &#61; mapper.convertValue(documentRequest, ErpSeniorDocumentsEntity.class);하고 영속성 컨텍스트에 병합(merge)하시면 해결되실껍니다.. 한줄로 정리하면..영속성 컨텍스트에는 같은 key 값을 가진 엔티티 객체가 1개만 있어야 한다라는 원칙을 아시면 됩니다(detach -> 수정된 객체 반영 -> merge)

웅깅카 · Answer

&#64;제타건담 detch상태로 만들수가있었군요..........왜 안됐는지는 정확히 이해했는데convertValue를 써서 그 객체를 유지하는 방법을 알고싶었는데 이런 방법이 있었네요 ㅠㅠㅠㅠㅠㅠㅠ

Jpa save할때 update가 왜안될까요? 코드추가합니당.

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