JPA

[SpringBoot][Kotlin] org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing 에러

실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발 강의를 들으면 주문서비스 테스트를 작성하고, 실행했는데 에러를 만났다. 반가워~👋 에러메세지 org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : com.jpabook.jpashop.domain.Order.delivery -> com.jpabook.jpashop.domain.Delivery; nested exception is java.la..

[Spring Boot] Error creating bean with name 'entityManagerFactory' defined in class path resource

Spring Boot, Kotlin, JPA, H2를 이용해서 API 테스트코드를 작성중이었다. Error creating bean with name 'entityManagerFactory' defined in class path resource Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceExcepti..

[Spring Boot][Gradle] 실행 시 Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. 에러

문제 Spring Initializr을 이용하여 프로젝트 생성 후, 추가설정 없이 바로 실행했더니 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-09-06 16:31:50.532 ERROR 20275 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Failed to configure a DataSource: 'url' att..