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해결됨
h2 data insert 문제
23.01.27 17:47 작성 조회수 714
0
h2 data에 upload 되지 않아 문의 드립니다.
em.find에서 객체가 key값이 나오는것이 아닌 object로 나와 문의 드립니다. persistentUsername은 강의에서 userName으로 변경할때 저는그냥 변경하지는 않았습니다만, Object로 나와 다른 문제가 있는지 해서 여쭈어 보게 되었습니다.
답변을 작성해보세요.
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황상익
질문자2023.01.28
메시지 내용입니다.
C:\Users\hwang\.jdks\azul-18.0.2\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.2\lib\idea_rt.jar=64183:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.2\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\hwang\IdeaProjects\ex1-jpa-basic\target\classes;C:\Users\hwang\.m2\repository\javax\xml\bind\jaxb-api\2.3.0\jaxb-api-2.3.0.jar;C:\Users\hwang\.m2\repository\org\hibernate\hibernate-entitymanager\5.3.10.Final\hibernate-entitymanager-5.3.10.Final.jar;C:\Users\hwang\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\hwang\.m2\repository\org\hibernate\hibernate-core\5.3.10.Final\hibernate-core-5.3.10.Final.jar;C:\Users\hwang\.m2\repository\org\javassist\javassist\3.23.2-GA\javassist-3.23.2-GA.jar;C:\Users\hwang\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\hwang\.m2\repository\org\jboss\jandex\2.0.5.Final\jandex-2.0.5.Final.jar;C:\Users\hwang\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;C:\Users\hwang\.m2\repository\javax\activation\javax.activation-api\1.2.0\javax.activation-api-1.2.0.jar;C:\Users\hwang\.m2\repository\org\dom4j\dom4j\2.1.1\dom4j-2.1.1.jar;C:\Users\hwang\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.0.4.Final\hibernate-commons-annotations-5.0.4.Final.jar;C:\Users\hwang\.m2\repository\javax\persistence\javax.persistence-api\2.2\javax.persistence-api-2.2.jar;C:\Users\hwang\.m2\repository\net\bytebuddy\byte-buddy\1.9.5\byte-buddy-1.9.5.jar;C:\Users\hwang\.m2\repository\org\jboss\spec\javax\transaction\jboss-transaction-api_1.2_spec\1.1.1.Final\jboss-transaction-api_1.2_spec-1.1.1.Final.jar;C:\Users\hwang\.m2\repository\com\h2database\h2\1.4.199\h2-1.4.199.jar hellojpa.JpaMain
1�� 28, 2023 10:42:24 ���� org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
name: hello
...]
1�� 28, 2023 10:42:25 ���� org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.3.10.Final}
1�� 28, 2023 10:42:25 ���� org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
1�� 28, 2023 10:42:25 ���� org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
1�� 28, 2023 10:42:25 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
1�� 28, 2023 10:42:25 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [org.h2.Driver] at URL [jdbc:h2:tcp://localhost/~/test]
1�� 28, 2023 10:42:25 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=sa}
1�� 28, 2023 10:42:25 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
1�� 28, 2023 10:42:25 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
1�� 28, 2023 10:42:25 ���� org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
Hibernate:
select
member0_.id as id1_0_0_,
member0_.name as name2_0_0_
from
Member member0_
where
member0_.id=?
java.lang.NullPointerException: Cannot invoke "hellojpa.Member.setName(String)" because "findMember" is null
at hellojpa.JpaMain.main(JpaMain.java:20)
1�� 28, 2023 10:42:26 ���� org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop
INFO: HHH10001008: Cleaning up connection pool [jdbc:h2:tcp://localhost/~/test]
Process finished with exit code 0
말씀하신 코드 추가해서 메시지 내용을 복사해서 올립니다.
감사합니다
OMG
2023.01.28
java.lang.NullPointerException: Cannot invoke "hellojpa.Member.setName(String)" because "findMember
" is null
findMember가 null이라는 것으로 보아
em.find(Member.class, 1L); <- ID가 1인 데이터가 h2 DB에 없는 것으로 예상이 되는데
h2를 접속해서 Member데이터를 select쿼리를 날려 확인해주세요.
답변 1