http://mangosteen.tobesoft.co.kr/nexus/repository/tobesoft-snapshots/archetype-catalog.xml maven project 생성할때 이주소가 잘못되었는지 TOBESOFT를 선택해도 파일에 아무것도 안뜹니다.  No archetypes available for this catalog. 이런오류만 뜹니다 여기서 막혀서 진도를 못나가고있습니다.

Projections을 이용한 조회 테스트를 하고 있던중Projections.fields에 대해 궁금한점이 있습니다. Dto에 @AllArgsConstructor만 적용하고 Projections.fields를 사용하게 되면 해당 인스턴스를 만들지 못한다고 exception이 발생합니다.영한님께서 강의에서 말쓴하신 Projections.fields의 특성은 getter, setter가 필요가 없고 생성자 또한 필요가 없다라고 하셨는데 이상하게 @AllArgsConstructor를 추가하면 exception이 발생합니다.ex@Getter @AllArgsConstructor public class ArticleFieldsDto{ private Long id; private String title; private LocalDateTime lastModifiedDate; private Long lastModifiedBy; } 예외 로그com.querydsl.core.types.ExpressionException: com.mylaboratory.jpa_and_querydsl.projections.dto.ArticleFieldsDto at com.querydsl.core.types.QBean.newInstance(QBean.java:246) at com.querydsl.core.support.NumberConversions.newInstance(NumberConversions.java:86) at com.querydsl.jpa.FactoryExpressionTransformer.transformTuple(FactoryExpressionTransformer.java:51) at org.hibernate.sql.results.internal.RowTransformerTupleTransformerAdapter.transformRow(RowTransformerTupleTransformerAdapter.java:30) at org.hibernate.sql.results.internal.StandardRowReader.readRow(StandardRowReader.java:109) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:198) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:33) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:443) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery(JdbcSelectExecutorStandardImpl.java:166) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.list(JdbcSelectExecutorStandardImpl.java:91) at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:31) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$0(ConcreteSqmSelectQueryPlan.java:113) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:335) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:276) at org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:571) at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:363) at org.hibernate.query.sqm.internal.QuerySqmImpl.list(QuerySqmImpl.java:1073) at org.hibernate.query.spi.AbstractSelectionQuery.getSingleResult(AbstractSelectionQuery.java:457) at org.hibernate.query.sqm.internal.QuerySqmImpl.getSingleResult(QuerySqmImpl.java:1103) at com.querydsl.jpa.impl.AbstractJPAQuery.getSingleResult(AbstractJPAQuery.java:214) at com.querydsl.jpa.impl.AbstractJPAQuery.fetchOne(AbstractJPAQuery.java:326) at com.mylaboratory.jpa_and_querydsl.projections.ProjectionsTest.projections_field(ProjectionsTest.java:70) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:568) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86) at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103) at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92) at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:147) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:127) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:90) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:55) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:102) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) Caused by: java.lang.InstantiationException: com.mylaboratory.jpa_and_querydsl.projections.dto.ArticleFieldsDto at java.base/java.lang.Class.newInstance(Class.java:639) at com.querydsl.core.types.QBean.create(QBean.java:251) at com.querydsl.core.types.QBean.newInstance(QBean.java:222) ... 91 more Caused by: java.lang.NoSuchMethodException: com.mylaboratory.jpa_and_querydsl.projections.dto.ArticleFieldsDto.<init>() at java.base/java.lang.Class.getConstructor0(Class.java:3585) at java.base/java.lang.Class.newInstance(Class.java:626) ... 93 more  예외가 발생하지 않는 경우는 아래와 같습니다.@NoArgsConstructor, @AllArgsConstructor 모두 사용@NoArgsConstructor, @AllArgsConstructor 모두 사용 X@NoArgsConstructor 만 사용 

스프링 빈 등록 그림에서 memberService()을 예시로 들면 @Bean 어노테이션으로 인해 스프링 빈 저장소에 빈 이름으로 메소드 이름인 memberService가 저장이 되고 빈 객체는 memberService()가 리턴하는 값이 저장이 된다고 이해를 했습니다. 여기서 질문이 있는데요 저장된 빈 객체의 데이터 타입은 MemberService가 맞나요? 빈 객체가 MemberServiceImpl 이거 인데 데이터 타입은 MemberService가 맞는지 헷갈려서 질문을 했습니다.  빈 객체라는게 스프링 컨테이너에 등록된 스프링 빈이 맞나요?  감사합니다. 

 강의에서는 한번 로그인한 회원에 대한 토큰을 Http 응답 메세지에 담아서 보냈고 Postman의 요청 헤더에 이 토큰을 담아서 로그인한 회원임을 확인 했는데 이렇게 직접 넣어주지 않고 실제 서비스에서 로그인을 유지하려고 하면 어떠한 방식으로 해야 하나요?

안녕하세요! 멀테스레딩 강의(Lock 구현 부분) 수강 중에 제가 제대로 이해가 안 가는 부분이 있어서 질문드립니다.구체적으로 강의 코드에서 sleep_for와 yield의 내부적 동작?을 저는yield(): lock이 잠겨있는 경우, system time slice에 상관없이 바로 context switching이 발생해, 해당 스레드가 다시 운영체제 스케줄링 큐에 들어가 운영체제가 다시 실행시켜 줄 때까지 대기sleep_for(n): lock이 잠겨있는 경우, yield와 마찬가지로 컨텍스트 스위칭이 바로 발생하는데, n시간동안 해당 스레드가 sleep thread 큐에 저장되어 있다가, 그 다음에 스케줄링큐로 들어가서 이후에 다시 실행될때까지 대기이해했는데, 이게 제대로 이해한게 맞을까요?특히 sleep_for의 동작이 이해가 잘 안가는데, 스택오버플로우에서는 https://stackoverflow.com/questions/17325888/c11-thread-waiting-behaviour-stdthis-threadyield-vs-stdthis-threadsleep_for(n)의 경우 최소 n시간 이상을 block한다는데, 해당 스레드가 블록되었다는 말이 컨텍스트 스위칭이 되어있다는걸까요? 또 sleep thread queue는 운영체제에서 관리하는 개념일까요? (제대로 이해를 못해서 질문이 두서 없는 점 죄송합니다....) 

Av + Av의 켤레를 더한허수부만 사라지고, A2cu가 되어야 하는 것 아닌가요?

gets 함수 취약점을 이용해서 쉘코드를 실행시키는 부분이 너무 인상적이어서 그 부분만 제가 방문하는 카페에 공유하고 싶은데 가능할까요?

엔티티와 테이블 생성 코드 모두 작성하고 실행을 했는데 테이블 생성이 안됩니다..https://drive.google.com/drive/u/1/my-drive여기에 압축 파일 올렸습니다.확인해봐주시면 감사하겠습니다..!

 파이썬 Print 사용법(1-4) - New 2023 강의에서 print로 출력하려고 하는데 자꾸 아래와 같은 오류가 떠요... 입력 값: 출력값:>>> print(f'm : {m:,}')Traceback (most recent call last): File "<stdin>", line 1, in <module>NameError: name 'm' is not defined Python Version : 3.11.2 64-bit

MyBatis 적용2 - 설정과 실행 부분 테스트 오류 발생해서 질문 드립니다JdbcTemplateV3 까지 잘 되었는데 MyBatis 적용하면 오류 발생합니다.MyBatis 관련된 모든 Bean 들이 생성안된 것 같아요. 오류 로그가 너무 길어서 일부만 첨부드립니다 java.lang.IllegalStateException: Failed to load ApplicationContextCaused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'itemController' defined in fileCaused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hello.itemservice.config.MyBatisConfig':Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemMapper'Caused by: java.lang.ClassNotFoundException: Cannot find class: Item =======ItemMapper.xml=========<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="hello.itemservice.repository.mybatis.ItemMapper"> <insert id="save" useGeneratedKeys="true" keyProperty="id"> insert into item (item_name, price, quantity) values (#{itemName}, #{price}, #{quantity}) </insert> <update id="update"> update item set item_name = #{updateParam.itemName}, price = #{updateParam.price}, quantity = #{updateParam.quantity} where id = #{id} </update> <select id="findById" resultType="Item"> select id, item_name, price, quantity from item where id = #{id} </select> <select id="findAll" resultType="Item"> select id, item_name, price, quantity from item <where> <if test="itemName != null and itemName != ''"> and item_name like concat('%',#{itemName},'%') </if> <if test="maxPrice != null"> and price &lt;= #{maxPrice} </if> </where> </select> </mapper>

안녕하세요 강의 잘보고 있습니다.혼자 공부하면서 이것저것 해보고 있습니다.다름이 아니라 DB로부터 DTO로 바로 조회를 하고 싶은데 막상 쿼리를 실행하면 적절한 생성자가 존재하지 않는다고 나옵니다.해당 Dto에 롬복을 이용해서 생성자 어노테이션을 붙여보기도 하고 직접 생성해서 코드를 실행 시켜보기도 하였으나 제대로 동작하지 않습니다. 혹시 한번만 봐주실수 있나요? 환경은 다음과 같습니다.자바 : 17스프링부트 : 3.0.2DB : 마리아DB 파일링크https://drive.google.com/file/d/1mJ4S-I938BXV7dtyono_uZfSXQxKtE8Q/view?usp=share_link 

MyApi.ktinterface MyApi { @GET("posts/1") suspend fun getPost1() : Post @GET("posts/{number}") suspend fun getPostNumber( @Path("number") number : Int ) : Post}강의: Retrofit 간단한 예제 변경시간 3분15초에서 suspend fun getPost1() : call<Post>에서 suspend fun getPost1() : Post로 수정하셨느데 무슨 차이가 있나요?   

uty1993@naver.com원래 공부하면서 들을때 타자 치면서 공부했는데, 강의 자료 받아봐서 직접 비교하면서 자기개발하려고 합니다.

 10자리까지만 드래그 되어야 하는게 아닌가요..? 뭔가 정렬이 된 것 같은데, 자릿수를 셀 수가 없어서요.. 어떻게 해야 하나요?

안녕하세요 20:00 부분입니다 옵셔널 키는 없어도 된다고 앞에서 해주셨는데왜 체크를 하는건가요 ?!

 안녕하세요 강사님. 이번 강의에서는 UserLoanHistory 클래스를 @Entity로 사용하는데요, userId, bookName 등 변수에 @column 어노테이션을 붙이지 않은 것을 확인할 수 있었습니다. 저번에 강사님께서 column 어노테이션이 없으면 변수명과 동일한 db 필드에 매핑된다고 하셨습니다. 이번강의에서 코드가 정상적으로 동작하는데 column 어노테이션이 없을때 자바의 camel case 변수가 db의 snake 형태의 이름으로 자동으로 변환되어 쿼리문이 실행되는 건지 궁금합니다.

안녕하세요, 코드 실행중에 질문이 있어 문의 드립니다.package hello.springtx.propagation; import lombok.extern.slf4j.Slf4j; 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.boot.test.context.TestConfiguration; import org.springframework.context.annotation.Bean; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.TransactionDefinition; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.UnexpectedRollbackException; import org.springframework.transaction.interceptor.DefaultTransactionAttribute; import javax.sql.DataSource; import static org.assertj.core.api.Assertions.*; @SpringBootTest @Slf4j public class BasicTxTest { @Autowired PlatformTransactionManager txManager; @TestConfiguration static class Config{ @Bean public PlatformTransactionManager transactionManager(DataSource dataSource){ return new DataSourceTransactionManager(dataSource); } } @Test void commit(){ log.info("트랜잭션 시작"); TransactionStatus status = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트잭 커밋 시작"); txManager.commit(status); log.info("트잭 커밋 완료"); } @Test void rollback(){ log.info("트랜잭션 시작"); TransactionStatus status = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트잭 롤백 시작"); txManager.rollback(status); log.info("트잭 롤백 완료"); } @Test void double_commit(){ log.info("트랜(1) 시작"); TransactionStatus status1 = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트랜(1) 커밋"); txManager.commit(status1); log.info("트랜(2) 시작"); TransactionStatus status2 = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트랜(2) 커밋"); txManager.commit(status2); } @Test void double_commit_rollback() { log.info("트랜잭션1 시작"); TransactionStatus tx1 = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트랜잭션1 커밋"); txManager.commit(tx1); log.info("트랜잭션2 시작"); TransactionStatus tx2 = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("트랜잭션2 롤백"); txManager.rollback(tx2); } @Test //논리 두개 정상 커밋 -> 물리 커밋 void inner_commit() { log.info("외부 트랜잭션 시작"); TransactionStatus outer = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("outer.isNewTransaction()={}", outer.isNewTransaction()); /** * 외부 트랜잭션 이어받아서 실행 * 그래서 commit 해도 아무런 변화도 없음, 당연 트잭 생성도 없음 */ log.info("내부 트랜잭션 시작"); TransactionStatus inner = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("inner.isNewTransaction()={}", inner.isNewTransaction()); log.info("내부 트랜잭션 커밋"); txManager.commit(inner);//변화가 없다고 볼수 있따 log.info("외부 트랜잭션 커밋"); txManager.commit(outer); } @Test//내부 commit 외부 rollback -> rollback void outer_rollback() { log.info("외부 트랜잭션 시작"); TransactionStatus outer = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("내부 트랜잭션 시작"); TransactionStatus inner = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("내부 트랜잭션 커밋"); txManager.commit(inner); //변화가 없다고 볼수 있따 log.info("외부 트랜잭션 롤백"); txManager.rollback(outer); } @Test //내부 : rollback , 외부 : commit : rollback void inner_rollback() { log.info("외부 트랜잭션 시작"); TransactionStatus outer = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("내부 트랜잭션 시작"); TransactionStatus inner = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("내부 트랜잭션 롤백"); txManager.rollback(inner); log.info("외부 트랜잭션 커밋"); assertThatThrownBy(() -> txManager.commit(outer)) .isInstanceOf(UnexpectedRollbackException.class); } @Test//외부 내부 별개의 커넥션으로 작동, 각각 따로 작동! PROPAGATION_REQUIRES_NEW! void inner_rollback_requires_new() { log.info("외부 트랜잭션 시작"); TransactionStatus outer = txManager.getTransaction(new DefaultTransactionAttribute()); log.info("outer.isNewTransaction()={}", outer.isNewTransaction()); log.info("내부 트랜잭션 시작"); DefaultTransactionAttribute definition = new DefaultTransactionAttribute(); definition.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW); TransactionStatus inner = txManager.getTransaction(definition); log.info("inner.isNewTransaction()={}", inner.isNewTransaction()); log.info("내부 트랜잭션 롤백"); txManager.rollback(inner); //롤백 log.info("외부 트랜잭션 커밋"); txManager.commit(outer); //커밋 } } 해당 코드에서, @TestConfiguration static class Config{ @Bean public PlatformTransactionManager transactionManager(DataSource dataSource){ return new DataSourceTransactionManager(dataSource); } } 이부분은 boot에서 자동 으로 생성해주는 부분이니 빼도 문제없이 작동한다고 생각했습니다. 그래서 돌려보니, 모든 테스트가 통과는 됩니다.그러나,  inner_rollback() 에서만 문제가 있어 문의 드립니다. 2023-03-05 18:03:46.478 INFO 11608 --- [ Test worker] hello.springtx.propagation.BasicTxTest : 외부 트랜잭션 시작2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Creating new transaction with name [null]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Opened new EntityManager [SessionImpl(1559037239<open>)] for JPA transaction2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Exposing JPA transaction as JDBC [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@6ee1ddcf]2023-03-05 18:03:46.479 INFO 11608 --- [ Test worker] hello.springtx.propagation.BasicTxTest : 내부 트랜잭션 시작2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Found thread-bound EntityManager [SessionImpl(1559037239<open>)] for JPA transaction2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Participating in existing transaction2023-03-05 18:03:46.479 INFO 11608 --- [ Test worker] hello.springtx.propagation.BasicTxTest : 내부 트랜잭션 롤백2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Participating transaction failed - marking existing transaction as rollback-only2023-03-05 18:03:46.479 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Setting JPA transaction on EntityManager [SessionImpl(1559037239<open>)] rollback-only2023-03-05 18:03:46.488 DEBUG 11608 --- [ Test worker] cResourceLocalTransactionCoordinatorImpl : JDBC transaction marked for rollback-only (exception provided for stack trace)java.lang.Exception: exception just for purpose of providing stack trace at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.markRollbackOnly(JdbcResourceLocalTransactionCoordinatorImpl.java:324) ~[hibernate-core-5.6.7.Final.jar:5.6.7.Final] at org.hibernate.engine.transaction.internal.TransactionImpl.markRollbackOnly(TransactionImpl.java:203) ~[hibernate-core-5.6.7.Final.jar:5.6.7.Final] at org.hibernate.engine.transaction.internal.TransactionImpl.setRollbackOnly(TransactionImpl.java:224) ~[hibernate-core-5.6.7.Final.jar:5.6.7.Final] at org.springframework.orm.jpa.JpaTransactionManager$JpaTransactionObject.setRollbackOnly(JpaTransactionManager.java:712) ~[spring-orm-5.3.17.jar:5.3.17] at org.springframework.orm.jpa.JpaTransactionManager.doSetRollbackOnly(JpaTransactionManager.java:611) ~[spring-orm-5.3.17.jar:5.3.17] at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:844) ~[spring-tx-5.3.17.jar:5.3.17] at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:809) ~[spring-tx-5.3.17.jar:5.3.17] at hello.springtx.propagation.BasicTxTest.inner_rollback(BasicTxTest.java:117) ~[test/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725) ~[junit-platform-commons-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[na:na] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) ~[na:na] at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) ~[na:na] at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) ~[na:na] at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) ~[na:na] at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) ~[na:na] at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71) ~[na:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) ~[gradle-worker.jar:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) ~[gradle-worker.jar:na]2023-03-05 18:03:46.490 INFO 11608 --- [ Test worker] hello.springtx.propagation.BasicTxTest : 외부 트랜잭션 커밋2023-03-05 18:03:46.526 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Initiating transaction commit2023-03-05 18:03:46.526 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Committing JPA transaction on EntityManager [SessionImpl(1559037239<open>)]2023-03-05 18:03:46.527 DEBUG 11608 --- [ Test worker] cResourceLocalTransactionCoordinatorImpl : On commit, transaction was marked for roll-back only, rolling back2023-03-05 18:03:46.527 DEBUG 11608 --- [ Test worker] o.s.orm.jpa.JpaTransactionManager : Closing JPA EntityManager [SessionImpl(1559037239<open>)] after transaction해당 로그가 뜨면서 테스트 통과는 됩니다.왜 이런 오류가 발생하는지 조금 이해가 안되서요, 그리고 내부에서 rollback을 했음에도 불구하고, Global transaction is marked as rollback-only but transactional code requested commit보이지 않습니다. 왜 이런 문제가 발생하는 걸까요??

request에서 담긴 내용을 Cotroller에게 넘겨주기전에DispatchServlet에서 구분하고 값을 변경해서 넣어주는데관련된 매서드나 클래스를 알수 있을까요?

아래는 MemberServiceTest의 코드입니다package hello.core.member; import org.assertj.core.api.Assertions; import org.junit.jupiter.api.Test; import org.springframework.util.Assert; public class MemberServiceTest { MemberService memberService = new MemberServiceImpl(); @Test void join() { //given Member member = new Member(1L, "memberA", Grade.VIP); //when memberService.join(member); Member findMember = memberService.findMember(1L); //then Assertions.assertThat(member).isEqualTo(findMember); } }

 지금 연산자 강의를 듣고있는데 c++과 중복되는 부분이 많아서 시간 낭비같이 보여서 바로 후반전인 클래스부터 강의를 들을까하는데..... 어떻게 할까요??