scmoon

해결하였습니다. 프로젝트를 처음에 flutter 로 만들어야 하는데, java 로 만든 모양입니다.

안드로이드 스튜디오에서 초록색 버튼이 안보입니다.

data 내 파일들을 삭제하고 재시작 하니 되네요. 감사합니다.

kafka 를 띄우니 오류가 발생하고 종료합니다.

H2 의 버젼을 1.4.199 에서 2.1.214 로 다시 올려서 해결하였습니다. 하루 전 질문에서는 스프링 부터 3.x 에서 2.1.214 실행시 붙지 않아, 1.4.199 로 내리니 해결되었는데, 지금 이부분은 다시 2.1.214 로 해야 동작하네요. 어제의 오류는 왜 발생안하는 지도 모르겠네요. 앞으로 어떤 오류가 날지도 모르겠고.. 스프링 부트와 h2 연결은 너무 불안 한 것 같습니다. JPA 공부중에 제일 어려운 부분이 스프링 부트와 h2 연결 같습니다. ( 저는 영한님의 모든 JPA 강의를 들었고, 항상 초기 2,3일 연결에 실패했던 것 같습니다. ) 다른 환경을 추천 해 주시거나, 명확한 매뉴얼 부탁드립니다.

QHello Test 에서  오류 확인 부탁드립니다.

같은 문의가 여기도 한번 올라 온 것 같은데 해결되었는 지요? <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.inflearn.com/questions/701235/test%EC%98%A4%EB%A5%98">https://www.inflearn.com/questions/701235/test%EC%98%A4%EB%A5%98</a>

추가 된 것은 Hello class 를 만들었고, <pre class="hljs"><code>package study.querydsl.entity;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.Id;
import lombok.Getter;
import lombok.Setter;

@Entity
@Getter
@Setter
public class Hello {

 @Id
 @GeneratedValue
 private Long id ;
}
</code></pre> QHello 가 만들어 졌고, <pre class="hljs"><code>package study.querydsl.entity;

import static com.querydsl.core.types.PathMetadataFactory.*;

import com.querydsl.core.types.dsl.*;

import com.querydsl.core.types.PathMetadata;
import javax.annotation.processing.Generated;
import com.querydsl.core.types.Path;


/**
 * QHello is a Querydsl query type for Hello
 */
@Generated("com.querydsl.codegen.DefaultEntitySerializer")
public class QHello extends EntityPathBase<Hello> {

 private static final long serialVersionUID = 1910216155L;

 public static final QHello hello = new QHello("hello");

 public final NumberPath<Long> id = createNumber("id", Long.class);

 public QHello(String variable) {
 super(Hello.class, forVariable(variable));
 }

 public QHello(Path<? extends Hello> path) {
 super(path.getType(), path.getMetadata());
 }

 public QHello(PathMetadata metadata) {
 super(Hello.class, metadata);
 }

}</code></pre>테스트 코드는 아래와 같습니다. <pre class="hljs"><code>package study.querydsl;

import com.querydsl.jpa.impl.JPAQueryFactory;
import jakarta.persistence.EntityManager;
import org.assertj.core.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.Commit;
import org.springframework.transaction.annotation.Transactional;
import study.querydsl.entity.Hello;
import study.querydsl.entity.QHello;

import static org.assertj.core.api.Assertions.*;

@SpringBootTest
@Transactional
@Commit

class QuerydslApplicationTests {

 @Autowired
 EntityManager em;

 @Test
 void contextLoads() {
 Hello hello = new Hello();
 em.persist(hello);

 JPAQueryFactory query = new JPAQueryFactory(em);
 QHello qHello = QHello.hello;

 Hello result = query.selectFrom(qHello).fetchOne();

 assertThat(result).isEqualTo(hello);
 assertThat(result.getId()).isEqualTo(hello.getId());

 }

}</code></pre>&nbsp;오류 코드는 아래가 핵심 같은데요. Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=study.querydsl.entity.Hello]Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=study.querydsl.entity.Hello]&nbsp;&nbsp;

h2 를 2.1.214 버전을 제거 하고, 1.4.199 버젼으로 다운그레이드 하여 성공하였습니다. 지난번 다른 수업에서는 1.4.199 는 실패하고, 2.1.214 만 성공했었는데, 어렵네요.

unit Test 는 성공했다고 나옵니다만, h2 콘솔에서 Hello table 이 생성되지 않았습니다.

들여 쓰기를 같이 하여 테스트 해 보았습니다. 실행해 봤는데, h2 를 끄면 오류를 내고 h2 를 켰을 때 오류를 내지 않는 것으로 봐서 정상 연결한 것 같은데, 테스트 시작시 연결로그도 없네요. 아래와 같이 나오고 h2 콘솔에서는 hello 테이블이 추가되지 않습니다. &nbsp;2023-05-07 19:21:57.872 INFO 17015 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...2023-05-07 19:21:57.946 INFO 17015 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.2023-05-07 19:21:58.006 INFO 17015 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]2023-05-07 19:21:58.067 INFO 17015 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {<a target="_blank" rel="noopener noreferrer nofollow" href="http://5.4.9.Final">5.4.9.Final</a>}2023-05-07 19:21:58.260 INFO 17015 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {<a target="_blank" rel="noopener noreferrer nofollow" href="http://5.1.0.Final">5.1.0.Final</a>}2023-05-07 19:21:58.407 INFO 17015 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect2023-05-07 19:21:59.091 DEBUG 17015 --- [ main] org.hibernate.SQL : drop table hello if exists2023-05-07 19:21:59.095 DEBUG 17015 --- [ main] org.hibernate.SQL : drop table member if exists2023-05-07 19:21:59.096 DEBUG 17015 --- [ main] org.hibernate.SQL : drop table team if exists2023-05-07 19:21:59.097 DEBUG 17015 --- [ main] org.hibernate.SQL : drop sequence if exists hibernate_sequence2023-05-07 19:21:59.100 DEBUG 17015 --- [ main] org.hibernate.SQL : create sequence hibernate_sequence start with 1 increment by 12023-05-07 19:21:59.103 DEBUG 17015 --- [ main] org.hibernate.SQL : create table hello (id bigint not null, primary key (id))2023-05-07 19:21:59.105 DEBUG 17015 --- [ main] org.hibernate.SQL : create table member (member_id bigint not null, age integer not null, username varchar(255), team_id bigint, primary key (member_id))2023-05-07 19:21:59.107 DEBUG 17015 --- [ main] org.hibernate.SQL : create table team (team_id bigint not null, name varchar(255), primary key (team_id))2023-05-07 19:21:59.110 DEBUG 17015 --- [ main] org.hibernate.SQL : alter table member add constraint FKcjte2jn9pvo9ud2hyfgwcja0k foreign key (team_id) references team2023-05-07 19:21:59.115 INFO 17015 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]2023-05-07 19:21:59.121 INFO 17015 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'2023-05-07 19:21:59.349 WARN 17015 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning2023-05-07 19:21:59.547 INFO 17015 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'2023-05-07 19:21:59.806 INFO 17015 --- [ main] study.querydsl.QuerydslApplicationTests : Started QuerydslApplicationTests in 8.197 seconds (JVM running for 8.992)2023-05-07 19:21:59.891 INFO 17015 --- [ main] o.s.t.c.transaction.TransactionContext : Began transaction (1) for test context [DefaultTestContext@3e62d773 testClass = QuerydslApplicationTests, testInstance = study.querydsl.QuerydslApplicationTests@796fe2b5, testMethod = contextLoads@QuerydslApplicationTests, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@4ef74c30 testClass = QuerydslApplicationTests, locations = '{}', classes = '{class study.querydsl.QuerydslApplication}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[<a target="_blank" rel="noopener noreferrer nofollow" href="http://org.springframework.boot.test.autoconfigure.properties">org.springframework.boot.test.autoconfigure.properties</a>.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@7dcf94f8, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@f5958c9, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@5bda8e08, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@3d285d7e], 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]]; transaction manager [org.springframework.orm.jpa.JpaTransactionManager@1031c1a0]; rollback [false]2023-05-07 19:21:59.978 DEBUG 17015 --- [ main] org.hibernate.SQL : call next value for hibernate_sequence2023-05-07 19:22:00.180 DEBUG 17015 --- [ main] org.hibernate.SQL : insert into hello (id) values (?)2023-05-07 19:22:00.185 DEBUG 17015 --- [ main] org.hibernate.SQL : select hello0_.id as id1_0_ from hello hello0_2023-05-07 19:22:00.246 INFO 17015 --- [ main] o.s.t.c.transaction.TransactionContext : Committed transaction for test: [DefaultTestContext@3e62d773 testClass = QuerydslApplicationTests, testInstance = study.querydsl.QuerydslApplicationTests@796fe2b5, testMethod = contextLoads@QuerydslApplicationTests, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@4ef74c30 testClass = QuerydslApplicationTests, locations = '{}', classes = '{class study.querydsl.QuerydslApplication}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[<a target="_blank" rel="noopener noreferrer nofollow" href="http://org.springframework.boot.test.autoconfigure.properties">org.springframework.boot.test.autoconfigure.properties</a>.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@7dcf94f8, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@f5958c9, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@5bda8e08, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@3d285d7e], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true]]2023-05-07 19:22:00.255 INFO 17015 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'2023-05-07 19:22:00.255 INFO 17015 --- [extShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'2023-05-07 19:22:00.256 INFO 17015 --- [extShutdownHook] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down'2023-05-07 19:22:00.256 DEBUG 17015 --- [extShutdownHook] org.hibernate.SQL : drop table hello if exists2023-05-07 19:22:00.258 DEBUG 17015 --- [extShutdownHook] org.hibernate.SQL : drop table member if exists2023-05-07 19:22:00.260 DEBUG 17015 --- [extShutdownHook] org.hibernate.SQL : drop table team if exists2023-05-07 19:22:00.262 DEBUG 17015 --- [extShutdownHook] org.hibernate.SQL : drop sequence if exists hibernate_sequence2023-05-07 19:22:00.264 INFO 17015 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...2023-05-07 19:22:09.295 INFO 17015 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.&nbsp;

p6spy 도 적용 안되는 것 같습니다.

저도 중복되지 않아 고민했는데, 자동으로 distinct 가 추가 되는 거였네요. 고민 끝.

distinct를 적용하지 않았을 때의 결과 관련

강의 하단에 반드시 1.4.199 로 하라고 해서 최신을 받지 않고 그것을 받아 해서 발생한 오류인 것이네요. H2 데이터베이스 강의에서 반드시 1.4.199 받으라고 되어 있는 되어 있는 하단 문구 제거 부탁드립니다.

scmoon

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