강사님 에러 질문입니다. ㅠㅠ

Question

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2020-11-17 16:24:19.845 ERROR 34406 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'initDb': Invocation of init method failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:139) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:413) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1761) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:321) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:863) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) [spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) [spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) [spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1204) [spring-boot-2.1.16.RELEASE.jar:2.1.16.RELEASE] at jpabook.jpashop.JpashopApplication.main(JpashopApplication.java:10) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_201] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_201] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_201] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.16.RELEASE.jar:2.1.16.RELEASE] Caused by: java.lang.NullPointerException: null at jpabook.jpashop.initDb$InitService.dbInit1(initDb.java:43) ~[classes/:na] at jpabook.jpashop.initDb$InitService$$FastClassBySpringCGLIB$$2eb0016.invoke() ~[classes/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:752) ~[spring-aop-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295) ~[spring-tx-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.1.17.RELEASE.jar:5.1.17.RELEASE] at jpabook.jpashop.initDb$InitService$$EnhancerBySpringCGLIB$$a95ed200.dbInit1() ~[classes/:na] at jpabook.jpashop.initDb.init(initDb.java:29) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_201] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_201] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_201] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:363) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:307) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136) ~[spring-beans-5.1.17.RELEASE.jar:5.1.17.RELEASE] ... 23 common frames omitted package jpabook.jpashop; import jpabook.jpashop.domain.*; import jpabook.jpashop.domain.Item.Book; import lombok.RequiredArgsConstructor; import org.springframework.stereotype.Component; import org.springframework.transaction.annotation.Transactional; import javax.annotation.PostConstruct; import javax.persistence.EntityManager; // 총 주문 2 //-userA // JPA1 BOOK // JPA2 BOOK //-userB // SPRING1 BOOK // SPRING2 BOOK @Component @RequiredArgsConstructor public class initDb { private final InitService initService; @PostConstruct public void init() { initService.dbInit1(); } @Component @Transactional @RequiredArgsConstructor static class InitService { private EntityManager em; public void dbInit1() { Member member = new Member(); member.setName("userA"); member.setAddress(new Address("서울","1", "1111")); em.persist(member); Book book1 = new Book(); book1.setName("JPA1 BOOK"); book1.setPrice(10000); book1.setStockQuantity(100); em.persist(book1); Book book2 = new Book(); book2.setName("JPA2 BOOK"); book2.setPrice(20000); book2.setStockQuantity(100); em.persist(book2); OrderItem orderItem1 = OrderItem.createOrderItem(book1, 10000, 1); OrderItem orderItem2 = OrderItem.createOrderItem(book2, 20000, 2); Delivery delivery = new Delivery(); delivery.setAddress(member.getAddress()); Order order = Order.createOrder(member, delivery, orderItem1, orderItem2); em.persist(order); } } } 아마도 initDb 빈 생성에서 에러가 나는거 같은데 왜 그런지 모르겠습니다.

김영한 · Answer

안녕하세요. 두잇베스트님 private EntityManager em; -> private final EntityManager em; final 키워드 추가해주세요^^

두잇베스트 · Answer

아 감사합니다! 제가 딴곳에서 찾고 있어네요.. build 파일 뭐가 문제지 찾으면서.. 빼먹은게 문제일줄이야.. 허탈하긴 하지만 감사합니다 강사님!! 좋은 강의 해주셔서 감사합니다 ㅎㅎ

두잇베스트 · Answer

build.gradle 파일은 전에 설정 하신대로 이렇게 되있습니다.  잘되다가 에러가 나네요 ㅠ.  plugins { id 'org.springframework.boot' version '2.1.16.RELEASE' id 'java' } apply plugin: 'io.spring.dependency-management' ext["h2.version"] = "1.4.200" //h2 데이터베이스 버전 지정 ext["hibernate.version"] = "5.4.20.Final" //하이버네이트 버전 지정 group = 'jpabook' version = '0.0.1-SNAPSHOT' sourceCompatibility = '1.8' configurations { compileOnly { extendsFrom annotationProcessor } } repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'org.springframework.boot:spring-boot-starter-thymeleaf' implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation 'org.springframework.boot:spring-boot-devtools' implementation 'com.github.gavlyukovskiy:p6spy-spring-boot-starter:1.5.6' compileOnly 'org.projectlombok:lombok' runtimeOnly 'com.h2database:h2' annotationProcessor 'org.projectlombok:lombok' testImplementation 'org.springframework.boot:spring-boot-starter-test' }