안녕하세요 🙋‍♂️백엔드는 스프링, 프론트는 react로 개발을 해야 되서 공부(삽질)중에 있습니다.백엔드까지 연동되는 강의는 잘 없어서 따로따로 공부하고 있어요.(질문이 허접해도 이해해 주세요)감정다이어리 예제를 따라하다보니 백엔드에서 서비스 되는 기능까지도 react에서 처리 가능해 보입니다. 감정다이어리 예제는controller 기능 --> react-router-domservice 기능 --> reducer 로 가능해 보입니다.그럼 실제 프로젝트에서는 백엔드에서는 db에서 데이터 넣고 빼고 하면서 json으로만 날려주면되나요?"백엔드는 프론트에서 사용할 API 들만 만들어주면 된다" 는 말이... 이런 건가요?@_@ 

인터넷을 아무리 뒤져봐도 명확한 답이 없어 또 질문을 드리게됐습니다,, ㅠㅠHS256 암호화 방식은 JWT 생성 시 서명 부분에 서버만 알고있는 키를 포함해 암호화하는 방식이라고 설명을 해주셨는데, 찾아보니 HS256 은 대칭 키 암호화 방식이라고들 하더라구요. 대칭키는 송/수신자가 같은 키를 공유하는 것으로 알고있는데 이렇게 되면 서버만 알고있는 키가 아니지 않나..? 라는 생각을 했는데 맞는지 잘 모르겠습니다. RS256 암호화 방식은 JWT 생성 시 서명 부분에 키를 포함하지 않고, 헤더와 페이로드를 서버가 가지고있는 키로 암호화를 한다 ~ 라고 설명해주셨는데, 자바 켜서 확인을 해보니 인자 값에 시크릿 키를 넣어줘야하기도 하고 jwt.io 에서 RS256 으로 바꿔보니 begin secret ~ end secret 이라고 시크릿 키를 넣는 칸이 있더라구요. 이것도 어느게 맞는지 잘모르겠네요 🥲 정말정말 헷갈립니다 ㅠㅠ

안녕하세요! 현재 커뮤니티 앱을 개인 프로젝트로 개발하려는 학생입니다.처음으로 백엔드 프레임워크를 배우는거라 모르는점이 많은데같이 프로젝트를 진행하려는 친구와 스프링 부트라는 프레임 워크로 같이 진행하기로 하였습니다.현재 인프런에 올라와있는 김영한 선생님의스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술강의로 시작하려고 하는데 이후에는 어떤 강의를 들어야할지 잘 모르겠습니다..김영한 선생님의 스프링부트 JPA강의도 있는데 이게 제 의도와 맞는 강의인지 잘 모르겠네요..혹시 조언을 구할수 있을까요?감사합니다!

문제에서 가위바위보를 몇번할지 입력받고5번씩 두번 입력받으면for문을 입력받은만큼2번 돌리면되는데배열의 인덱스가0부터 시작하는데입력받은 만큼 돌려야하니까for(int i=1; i<n*2; i++) {}이런형태로 해서문제를 풀었는데배열관련 익셉션이자꾸뜨네요..어느부분이 문제인지모르겠어요 ㅠㅠ

nav_graph에 destination 목록에 제가 만든 프래그먼트들이 하나도 안보입니다. tools:context=".fragment.(프래그먼트 이름)Fragment" 이렇게 이름을 각각 프래그먼트에 써줬는데 안나옵니다. 다른 확인해야할 부분이 있을까요?

https://www.acmicpc.net/source/share/3aead49f6236495587ada0567fa5684c위 링크에 제가 풀이한 방법이 적혀있습니다.저는 atoi 함수를 사용하여 숫자값을 얻었습니다.string s = "000007";int num = atoi(s.c_str()); // 7 문제에 제시된 테스트들은 모두 통과를 하지만 제출은 "틀렸습니다"가 나오고 있습니다. 어떤 부분이 틀렸는지 알수있을까요....?

SpringConfig.java @Bean 부분 수정후 에러가 발생 합니다. 오타도 없는데 왜 이럴까요수정한 부분 아래 주석 처리 되어 있습니다. 강의 따라 그대로 하였습니다.이렇게 변경 하고 실행 (회원가입) 부분 진행 후 이렇게 오류가 납니다. 오류 코드는 다음과 같습니다.Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.2022-09-28 14:41:26.208 ERROR 4416 --- [ main] o.s.boot.SpringApplication : Application run failedorg.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springConfig' defined in file [C:\Java\pjt\spring\hello-spring\hello-spring\out\production\classes\hello\hellospring\SpringConfig.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132) ~[spring-boot-test-2.7.3.jar:2.7.3] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-5.3.22.jar:5.3.22] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8(ClassBasedTestDescriptor.java:363) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:368) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9(ClassBasedTestDescriptor.java:363) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[na:na] at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:362) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:283) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:282) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.Optional.orElseGet(Optional.java:369) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:271) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:102) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:101) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:66) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) ~[junit5-rt.jar:na] at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) ~[junit-rt.jar:na] at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) ~[idea_rt.jar:na] at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) ~[junit-rt.jar:na] at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) ~[junit-rt.jar:na] at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) ~[junit-rt.jar:na]Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.22.jar:5.3.22] ... 89 common frames omittedCaused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) ~[na:na] at java.base/java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1054) ~[na:na] at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.Optional.map(Optional.java:265) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.util.Lazy.getNullable(Lazy.java:231) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.util.Lazy.get(Lazy.java:115) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.22.jar:5.3.22] ... 100 common frames omittedCaused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103) ~[spring-data-commons-2.7.2.jar:2.7.2] ... 122 common frames omittedCaused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findId' found for type 'Member' at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:251) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:385) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89) ~[spring-data-jpa-2.7.2.jar:2.7.2] ... 126 common frames omitted2022-09-28 14:41:26.210 ERROR 4416 --- [ main] o.s.test.context.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@e84a8e1] to prepare test instance [hello.hellospring.service.MemberServiceIntegrationTest@28cf179c]java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-5.3.22.jar:5.3.22] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8(ClassBasedTestDescriptor.java:363) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:368) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9(ClassBasedTestDescriptor.java:363) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[na:na] at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:362) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:283) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:282) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.Optional.orElseGet(Optional.java:369) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:271) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:102) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:101) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:66) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[junit-platform-launcher-1.8.2.jar:1.8.2] at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) ~[junit5-rt.jar:na] at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) ~[junit-rt.jar:na] at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) ~[idea_rt.jar:na] at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) ~[junit-rt.jar:na] at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) ~[junit-rt.jar:na] at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) ~[junit-rt.jar:na]Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springConfig' defined in file [C:\Java\pjt\spring\hello-spring\hello-spring\out\production\classes\hello\hellospring\SpringConfig.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.3.jar:2.7.3] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132) ~[spring-boot-test-2.7.3.jar:2.7.3] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.3.22.jar:5.3.22] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-5.3.22.jar:5.3.22] ... 71 common frames omittedCaused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.22.jar:5.3.22] ... 89 common frames omittedCaused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) ~[na:na] at java.base/java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1054) ~[na:na] at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.Optional.map(Optional.java:265) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.util.Lazy.getNullable(Lazy.java:231) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.util.Lazy.get(Lazy.java:115) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.22.jar:5.3.22] ... 100 common frames omittedCaused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member' at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93) ~[spring-data-jpa-2.7.2.jar:2.7.2] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103) ~[spring-data-commons-2.7.2.jar:2.7.2] ... 122 common frames omittedCaused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findId' found for type 'Member' at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:251) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384) ~[spring-data-commons-2.7.2.jar:2.7.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:385) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93) ~[spring-data-commons-2.7.2.jar:2.7.2] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89) ~[spring-data-jpa-2.7.2.jar:2.7.2] ... 126 common frames omitted  java.lang.IllegalStateException: Failed to load ApplicationContextat org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124)at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248)at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8(ClassBasedTestDescriptor.java:363)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:368)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9(ClassBasedTestDescriptor.java:363)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655)at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312)at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:362)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:283)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:282)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272)at java.base/java.util.Optional.orElseGet(Optional.java:369)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:271)at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:102)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:101)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:66)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90)at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)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: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springConfig' defined in file [C:\Java\pjt\spring\hello-spring\hello-spring\out\production\classes\hello\hellospring\SpringConfig.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)... 71 moreCaused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)... 89 moreCaused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long); Reason: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)at java.base/java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1054)at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87)at java.base/java.util.Optional.map(Optional.java:265)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87)at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365)at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323)at org.springframework.data.util.Lazy.getNullable(Lazy.java:231)at org.springframework.data.util.Lazy.get(Lazy.java:115)at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329)at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)... 100 moreCaused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional hello.hellospring.repository.MemberRepository.findId(java.lang.Long)! No property 'findId' found for type 'Member'at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103)... 122 moreCaused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findId' found for type 'Member'at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91)at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438)at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414)at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367)at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330)at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349)at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332)at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81)at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:251)at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:385)at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93)at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89)... 126 more벌써 2일째 이거 때문에 진도를 못나 가네요 ㅜㅜ 저와 유사한 문의가 많더라구요 다 찾아서 댓글대로 수정해보았는데 똑같은 에러 입니다. ㅜㅜ 도와 주세요

chmod 777 -R workingcd /home/pilot-pjt/working/java -cp bigdata.smartcar.loggen-1.0.jar com.wikibook.bigdata.smartcar.loggen.CarLogMain 20160101 3 &cd SmartCar/mv SmartCarStatusInfo_20160101.txt /home/pilot-pjt/working/car-batch-log/하루짜리 배치파일을 생성하기 위해 로그젠을 실행시키고 만들어진 txt 파일을 플럼이 바라보는 폴더로 이동시키는 과정입니다. 위 명령어 순서대로 실행했습니다. txt 파일이 만들어진 것을 확인했고, mv 명령어 이후 해당 폴더에서 txt 파일이 사라진 것 까지 확인했으나 정작 /home/pilot-pjt/working/car-batch-log/ 경로로 가보면 파일이 옮겨져있지 않습니다. 그래서hdfs dfs -ls -R /pilot-pjt/collect/car-batch-log명령어로 하둡에 잘 적재되어있는지 확인이 불가합니다 ㅠ_ㅠ제가 어떤것을 잘못했을까요?그리고 위 hdfs 명령어는 어느 폴더에서든지 실행할 수 있나요?아직 pilot-pjt 폴더 내에 working 디렉토리만 있고 collect 디렉토리는 없습니다. 제가 txt 데이터 파일을 플럼이 바라보는곳에 아직 넣지 못해서 collect 디렉토리가 안만들어진 것일까요?

NullReferenceException: Object reference not set to an instance of an objectQuestSystemTest.Start () (at Assets/WJ/Ouest/QuestTest/QuestSystemTest.cs:18)퀘스트 시스템 작성 후 퀘스트 시스템 테스트 스크립트를 만들어 실행했는데 위와 같은 오류가 나오면서 제대로 테스트할 수 없습니다.questSystem.onQuestRegistered += (quest) => { print($"New Quest:{quest.CodeName} Registered"); print($"Active Quests Count:{questSystem.ActiveQuests.Count}"); };18번 라인은 다음과 같은데 어디서 문제가 생긴걸까요?더하여 혹시 가능하다면 델리게이트, 이벤트 사용법과 람다식응용에 대한 설명도 들을 수 있을지 질문드리고싶습니다. 감사합니다. 

열심히 홍팍님 강의를 보고 있는 구독자입니다.유튜브에도 동일한 강의가 있는데, 자바API부분이 유튜브가 좀 더 시간이 깁니다. 강의 내용에 차이점이 있나요??아니면 뒤에 유튜브 댓글, 클라우드스터딩 안내하는 부분만 추가된 걸까요? 항상 홍팍님 강의에 동기부여 받고 열심히 하겠습니다.

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요.build 성공 후 jar 실행 했는데 무반응 입니다.에러도 안 뜨고 아무 반응이 없어요ㅠ  

아래 3개 서버를 늘렸을때 이러한 에러가 난다고 봤는데 2개를 올려도 다음과 같은 에러가 발생합니다.어떻게 진행을 해야 하는지 문의드립니다.

안녕하세요.34강 수업끝 마무리 지으실때 css_layout.pdf 파일에4.1 복습해서 Outpan Flexbox Playground 링크에 들어가니, 오류가 뜨면서 웹페이지가 일시적으로 다운되었거나 새 웹 주소로 완전히 이동했을 수 있습니다.라는 문구가 뜨면서 오류가 나는데 왜 이러는 걸까요?

def Count(capacity): cnt=1 sum=0 for x in Music: if sum+x>capacity: cnt+=1 sum=x else: sum+=x return cnt만약Music = [1,2,3,4,5,6,7,8,9],cnt = 1capacity=23 일때,x=6 까지 진행이 되었다고치면cnt=1, sum=21 이고,  x=7이면, sum+x가 capactiy보다 크니까 cnt=2가 되고sum=x가 진행되면서 x=8일때 sum+x>capacity가 7+8>23에서 7을 왜 남겨두는지 이해가 가지않습니다. 제 머리로는 (1,2,3,4,5,6,7) (8,9)1~7까지 합한게 23이 넘으니까 8부터 비교를 해야되지않나라는 생각이 박혀있는데8,9는 DVD로 만들수있는데sum+x>capacity 성립하기 위해 7도 포함해서 하는건지처음 cnt에 1을 선언하는게 그 부족한 개수를 더하신건지정확한 이유를 잘 모르겠습니다.  

안녕하세요 선샌님~!블로그 자료로 1주차 복습겸 한번 더 정독하다가 0이 하나 빠진 부분이 있어 제보드립니다! 100억이 10억으로 잘못 적혀있어요!

pdf파일 50페이지에 전체주문가격조회에서괄호안에 "실무에서는 주로 주문에 전체 주문 가격 필드를 두고 역정규화 한다."라고 써져있는데 역정규화가 어떻게 되는건가요??

뭐가 문제일까요..?<수업 내용><실습>

안녕하세요.ionic을 처음하고 테스트용으로 ionic serve 를 수행하면 (--lab역시 동일) 에러가 발생됩니다. Users폴더 뒤에 계정명만 제거한 상태입니다. 해당 에러에 대한 해결 방안을 알려주실수 있나요?Error: spawn UNKNOWN at ChildProcess.spawn (node:internal/child_process:413:11) at Object.spawn (node:child_process:743:9) at spawn (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\node_modules\cross-spawn\index.js:12:24) at spawn (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\node_modules\@ionic\utils-subprocess\dist\index.js:170:12) at Subprocess.spawn (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\node_modules\@ionic\utils-subprocess\dist\index.js:143:16) at Shell.spawn (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\lib\shell.js:151:24) at async AngularServeCLI.spawn (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\lib\serve.js:363:19) at async AngularServeCLI.spawnWrapper (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\lib\serve.js:339:20) at async AngularServeCLI.serve (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\lib\serve.js:329:9) at async AngularServeRunner.serveProject (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli\lib\project\angular\serve.js:117:9)  보통 관련된 글을 확인하니 ionic info정보를 같이 첨부하길래 첨부하였습니다.Ionic: Ionic CLI : 6.20.1 (C:\Users\AppData\Roaming\npm\node_modules\@ionic\cli) Ionic Framework : @ionic/angular 6.2.8 @angular-devkit/build-angular : 14.2.3 @angular-devkit/schematics : 14.2.3 @angular/cli : 14.2.3 @ionic/angular-toolkit : 6.1.0 Utility: cordova-res : not installed globally native-run : 1.7.1 System: NodeJS : v18.9.1 (C:\Program Files\nodejs\node.exe) npm : 8.19.2 OS : Windows 10  ionic cli 재설치 및 node의 경우 stable version에서 최신버전 2가지 모두 진행해 보았습니다.

강의에서 사용된 이미지 파일들 어디서 받은지 궁금합니다!

make를 누르면 이런 창이 계속 뜹니다. 혹시나 해서 노트북으로도 시행을 해봤는데 거기서도 사진과 같은 에러가 발생하고 파일이 생성되지도 않습니다. 혹시 무엇이 문제인지 알 수 있을까요?