antd install 받고, doc 보면서 적용을 해보려고 합니다.기존 영상에는 doc에 class 형식으로 예제 소스가 되어있었지만, 현재는 일단은 함수형(?)으로 되어있는것으로 보입니다.그런데, 처음 보는 문법들이 많이 등장하지만 검색 키워드를 정의하기가 난해하여 질문드립니다.(처음 보는 문법은 강조 표시하였습니다.)*antd 예제 소스입니다.import { AppstoreOutlined, MailOutlined, SettingOutlined } from '@ant-design/icons'; import type { MenuProps } from 'antd'; import { Menu } from 'antd'; import React from 'react';  type MenuItem = Required<MenuProps>['items'][number];  function getItem( label: React.ReactNode,key?: React.Key | null,icon?: React.ReactNode, children?: MenuItem[],type?: 'group',): MenuItem { return { key, icon, children, label, type, } as MenuItem; } 질문 1: 매개 변수가 key, value 형식으로 들어간 부분질문 2: 매개 변수 key값에 '?'가 들어간 부분(객체값 추출시 obj.?key랑 비슷한걸까요...?)질문 3: return값에 'as'를 붙인 부분(해당 함수 위에 type이라는 object가 있는데, typescipt같은 걸까요? 해당 타입으로 반환한다는 거 같기는합니다.)const items: MenuItem[] = [ getItem('Navigation One', 'sub1', <MailOutlined />, [ getItem('Item 1', null, null, [getItem('Option 1', '1'), getItem('Option 2', '2')], 'group'), getItem('Item 2', null, null, [getItem('Option 3', '3'), getItem('Option 4', '4')], 'group'), ]), getItem('Navigation Two', 'sub2', <AppstoreOutlined />, [ getItem('Option 5', '5'), getItem('Option 6', '6'), getItem('Submenu', 'sub3', null, [getItem('Option 7', '7'), getItem('Option 8', '8')]), ]), getItem('Navigation Three', 'sub4', <SettingOutlined />, [ getItem('Option 9', '9'), getItem('Option 10', '10'), getItem('Option 11', '11'), getItem('Option 12', '12'), ]), ];질문 4: 변수명 뒤에 ': MenuItem[]' 역시 해당 변수의 타입을 정의한걸까요?? const onClick: MenuProps['onClick'] = e => { console.log('click', e); };  const App: React.FC = () => ( <Menu onClick={onClick} style={{ width: 256 }} mode="vertical" items={items} /> );  export default App;

안녕하세요, 궁금한 점이 있어서 이렇게 글을 씁니다! 24:13분에 li.insert(li.end(), i);를 이용해 i가 50일 때의 iterator를 반환해주었습니다. 이 부분에서 end()는 list<int>::iterator itRemember가 접근할 수 없는 더미로드를 가리키는 걸로 알고 있는데, 50에 접근하려면 end의 바로 앞에 있는 부분을 50으로 대체해야 되지 않을까요.. 이 부분이 애매하게 와닿아서 그런데 답변주시면 감사하겠습니다.

AjaxSecurityConfig 제작 중 authenticationManager must be specified 오류가 발생합니다.@Configuration @Order(0) public class AjaxSecurityConfig { private AuthenticationConfiguration authenticationConfiguration; @Autowired private void setAjaxSecurityConfig(AuthenticationConfiguration authenticationConfiguration) { this.authenticationConfiguration = authenticationConfiguration; } @Bean public AuthenticationManager authenticationManager(AuthenticationConfiguration authenticationConfiguration) throws Exception { return authenticationConfiguration.getAuthenticationManager(); } @Bean public AccessDeniedHandler ajaxAccessDeniedHandler() { return new AjaxAccessDeniedHandler(); } @Bean public AuthenticationProvider ajaxAuthenticationProvider(){ return new AjaxAuthenticationProvider(passwordEncoder()); } @Bean public AjaxAuthenticationSuccessHandler ajaxAuthenticationSuccessHandler(){ return new AjaxAuthenticationSuccessHandler(); } @Bean public AjaxAuthenticationFailureHandler ajaxAuthenticationFailureHandler(){ return new AjaxAuthenticationFailureHandler(); } @Bean public PasswordEncoder passwordEncoder() { return PasswordEncoderFactories.createDelegatingPasswordEncoder(); } @Bean public SecurityFilterChain FilterChain(HttpSecurity http) throws Exception { AuthenticationManagerBuilder authenticationManagerBuilder = http.getSharedObject(AuthenticationManagerBuilder.class); authenticationManagerBuilder.authenticationProvider(ajaxAuthenticationProvider()); http .antMatcher("/api/**") .authorizeRequests() .antMatchers("/api/messages").hasRole("MANAGER") .antMatchers("/api/login").permitAll() .anyRequest().authenticated() .and() .exceptionHandling() .authenticationEntryPoint(new AjaxLoginAuthenticationEntryPoint()) .accessDeniedHandler(ajaxAccessDeniedHandler()); // http.csrf().disable(); ajaxConfigurer(http); return http.build(); } private void ajaxConfigurer(HttpSecurity http) throws Exception { http .apply(new AjaxLoginConfigurer<>()) .successHandlerAjax(ajaxAuthenticationSuccessHandler()) .failureHandlerAjax(ajaxAuthenticationFailureHandler()) .loginPage("/api/login") .loginProcessingUrl("/api/login") .setAuthenticationManager(authenticationManager(authenticationConfiguration)); } // @Bean // public AjaxLoginProcessingFilter ajaxLoginProcessingFilter() throws Exception { // AjaxLoginProcessingFilter ajaxLoginProcessingFilter = new AjaxLoginProcessingFilter(); // ajaxLoginProcessingFilter.setAuthenticationManager(authenticationManager(authenticationConfiguration)); // ajaxLoginProcessingFilter.setAuthenticationSuccessHandler(ajaxAuthenticationSuccessHandler()); // ajaxLoginProcessingFilter.setAuthenticationFailureHandler(ajaxAuthenticationFailureHandler()); // return ajaxLoginProcessingFilter; // } } public final class AjaxLoginConfigurer<H extends HttpSecurityBuilder<H>> extends AbstractAuthenticationFilterConfigurer<H, AjaxLoginConfigurer<H>, AjaxLoginProcessingFilter> { private AuthenticationSuccessHandler successHandler; private AuthenticationFailureHandler failureHandler; private AuthenticationManager authenticationManager; public AjaxLoginConfigurer() { super(new AjaxLoginProcessingFilter(), null); } @Override public void init(H http) throws Exception { super.init(http); } @Override public void configure(H http) { if(authenticationManager == null){ authenticationManager = http.getSharedObject(AuthenticationManager.class); } getAuthenticationFilter().setAuthenticationManager(authenticationManager); getAuthenticationFilter().setAuthenticationSuccessHandler(successHandler); getAuthenticationFilter().setAuthenticationFailureHandler(failureHandler); SessionAuthenticationStrategy sessionAuthenticationStrategy = http .getSharedObject(SessionAuthenticationStrategy.class); if (sessionAuthenticationStrategy != null) { getAuthenticationFilter().setSessionAuthenticationStrategy(sessionAuthenticationStrategy); } RememberMeServices rememberMeServices = http .getSharedObject(RememberMeServices.class); if (rememberMeServices != null) { getAuthenticationFilter().setRememberMeServices(rememberMeServices); } http.setSharedObject(AjaxLoginProcessingFilter.class,getAuthenticationFilter()); http.addFilterBefore(getAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class); } @Override public AjaxLoginConfigurer<H> loginPage(String loginPage) { return super.loginPage(loginPage); } public AjaxLoginConfigurer<H> successHandlerAjax(AuthenticationSuccessHandler successHandler) { this.successHandler = successHandler; return this; } public AjaxLoginConfigurer<H> failureHandlerAjax(AuthenticationFailureHandler authenticationFailureHandler) { this.failureHandler = authenticationFailureHandler; return this; } public AjaxLoginConfigurer<H> setAuthenticationManager(AuthenticationManager authenticationManager) { this.authenticationManager = authenticationManager; return this; } @Override protected RequestMatcher createLoginProcessingUrlMatcher(String loginProcessingUrl) { return new AntPathRequestMatcher(loginProcessingUrl, "POST"); } } Intellij 에서 AjaxLoginConfigurer에서 setAuthenticationManager 메소드 쪽에 Return value of the method is never used 라고 하는 것을 보면 Manager의 return 값이 없는 것 같습니다. @Bean public AjaxLoginProcessingFilter ajaxLoginProcessingFilter() throws Exception { AjaxLoginProcessingFilter ajaxLoginProcessingFilter = new AjaxLoginProcessingFilter(); ajaxLoginProcessingFilter.setAuthenticationManager(authenticationManager(authenticationConfiguration)); ajaxLoginProcessingFilter.setAuthenticationSuccessHandler(ajaxAuthenticationSuccessHandler()); ajaxLoginProcessingFilter.setAuthenticationFailureHandler(ajaxAuthenticationFailureHandler()); return ajaxLoginProcessingFilter; } 에서는 정상적으로 authenticationManager가 등록이 되었습니다. 오류가 왜 일어나는지는 알 것 같지만, 해결 방법이 도저히 이해가 가지 않습니다. 아니면 전에 올린 ajaxAuthenticationProvider가 등록되지 않은 것이 문제인지 생각했지만. Filter로는 잘 되어서 그 문제는 아닐 거라 생각해 질문을 올립니다.전체 코드는 Othkkartho/SpringSecurityLearn at ch4.7 (github.com) 입니다. 좋은 강의와 질문 대답 항상 감사합니다.

friend로 함수 처리를 하시면서 하신 말씀이불편함을 조금더 없애기 위하여 파라미터의 getCents()를 안통하게 하기위해 friend로 함수 처리를 하면된다고 하시는데friend로 처리를 하나 안하나 똑같이 작동하며 아래 출력 코드에서 고친것이 하나도 없으신데 getCents()를 안통한다고 하신것이 이해가 안가 질문을 드립니다처음에는 getCents()를 쓰는것이 코드가 길어보이고 귀찮으니까 코드를 줄이기위해 getCents()를 제거하기위해 하신줄 알았습니다.operator + 함수 내부의 return 코드를return Cents(c1 + c2); 처럼요.

final DateTime selectedDate; _TopPart({required this.selectedDate, Key? key}) : super(key: key); 여기서 key가 무엇을 의미하나요?

Clock gating model 강의를 듣다가 중간에 Clock 신호를 Logic으로 건드렸을 때 다양한 문제가 발생하기 때문에 주의를 요한다고 하셨는데왜 문제가 발생하는지 궁금합니다.또 다양한 문제는 어떤 것들이 있는지도 궁금합니다.

vscode로 C언어 입출력에 대해 공부중인 학생입니다. 유니코드 특수문자가 출력되도록 코드를 설계한 후 컴파일하여 실행할때 .\"파일이름".exe를 터미널에 입력할 때는 정상적으로 출력이 되나 키보드 단축키로 "작업: 테스트 작업 실행" 명령을 수행하면 문자가 깨져서 출력됩니다. 인코딩은 모두 UTF-8로 설정된 상태입니다. 같은 방식으로 컴파일해도 두 실행 명령이 각각 다른 결과를 나타내는 것은 무슨 이유인지, 그리고 테스트 작업 실행 명령을 통해 정상적으로 출력되는 유니코드 특수문자를 얻을 수 있는지 궁금합니다.

아래 코드 2번째 줄에 디버깅 포인트 걸고 실행해도 안걸리시는분들@ExceptionHandler(MethodArgumentTypeMismatchException.class) protected ResponseEntity<ErrorResponse> handleMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException e) { log.error("handleMethodArgumentTypeMismatchException", e); ErrorResponse errorResponse = ErrorResponse.of(HttpStatus.BAD_REQUEST.toString(), e.getMessage()); return ResponseEntity.status(HttpStatus.BAD_REQUEST) .body(errorResponse); } 디버깅 모드로 실행 해야 걸려요 그냥 실행 하면 안걸려요

=========================================[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. 안녕하세요 혼자 프로젝트를 만들다가 특정 Type 별로 정렬을 수행해야 하는 경우가 생겨 검색하다 QueryDSL을 이용하여 orderBy Case 구문을 사용하는 방법이 궁금하여 질문을 남기게 되었습니다.정확하게는 OneToMany 관계인 경우, Many 쪽의 요소를 정렬하고자 할 때의 방법을 잘 모르겠어서 질문드려요!Store < === > Menu위의 두 엔티티가 OneToMany 관계로 연관되어 있고, 매장 상세 정보에서 메뉴를 출력하는 경우, Menu의 Type 필드( MAIN, DESSERT, DRINK, BEVERAGE)를 기준으로 orderBy를 수행하려고 합니다.현재 제가 구현한 방식은< 특정 매장에 속한 메뉴 조회하는 로직 >< 매장의 정보를 조회하는 코드 >매장을 조회하는 로직에서 한 번에 처리하려고 하니 방법이 생각나지 않아 두 쿼리를 분리하여 메뉴는 위의 코드에서 조회하고, 아래에서는 매장의 나머지 정보만 불러오는 형식으로 구현돼있습니다.또한 매장 정보 조회 시, DTO에선 순수 매장 정보만을 불러오는 형식이라 메뉴를 조회하는 쿼리가 중복으로 나가진 않습니다!연관 관계에 놓여 있는 엔티티를 별도의 조회 쿼리를 작성하여 불러오는 것이 이런 경우 맞는 방법인지 아니면 제가 아직 부족하여 놓친 하나로 합쳐서 조회할 수 있는 좋은 방법이 있는지 궁금합니다!!긴 글 읽어주셔서 감사합니다!     

안녕하세요 선생님. 백서버를 프론트와 연결하고 회원가입 테스트를 하고 있는데 네트워크 탭을 보니까 Method가 POST가 아닌 OPTIONS로 나오는 경우에는 어느 부분을 봐야 할까요?signup요청이 보내져서 콘솔에 요청이 보내진 것을 확인했지만 그 다음으로 네트워크 탭에서 다음과 같이 나오고 콘솔 창에는 다음과 같이 나옵니다.  500번대 에러라 서버 오류라는것은 알겠는데, 라우터에서 post로 썼는데도 저런 에러가 떠서 어디를 확인해야 할지 모르겠습니다..ㅠㅠㅠback 폴더의 routes디렉토리의 user.js는 이렇고 saga폴더에서 user.js의 signup부분은이렇습니다.  

'spring rest docs1 - 기본설정' 강의를 듣다가 오류가 발생하여 글을 올립니다. gradle 빌드 시 Execution failed for task ':test'. 에러가 발생합니다. 설정에서도 intellij로 설정했는데 왜 그러는지 모르겠습니다 ,그리고 src.docs.asciidoc.index.adoc에서도 오류가 발생합니다

안녕하세요, 강의를 잘보고 잘 이해하고 있다고 생각하고 진행하고 있습니다만, 의문점이 생겼습니다.8비트 정수의 범위를 설명해주실 때부호가 있는(signed) 정수일 경우 범위를 -128 ~ 127로표현해주셨는데요.분명 128의 숫자는 2진수로 표현하였을 때 1000 0000이 맞습니다.이걸 알려주신 '2의 보수' 표현법으로 -128을 나타내면1000 0000 -> 0111 1111 이 되고 +1을 하면1000 0000가 됩니다만 앞선 설명에서는 첫번째 비트공간을음수,양수를 판별하기 위해 사용되는 자리라고 설명해주셔서그렇게 생각하고 있었습니다만 이렇게 될 경우8비트 이니까 128의 2진수인 1000 0000에서 맨앞에 1이 부호를 표현하는 자리이기 때문에 짤리고 000 0000 으로 표현되는 것 이 아닌가요?그렇게 되면 "부호가 있는 정수"의 범위일 경우000 0000 ~ 111 1111(127)이 된다는 건데 뭔가 이상하고그렇다고 1000 0000 을 -0으로 치부해 버리면0을 '2의 보수' 계산법을 통해 계산하였을 경우 똑같이-0 이나 0이나 같은 0000 0000 값이 나와서 이상하고그냥 -128의 경우 +128이나 -128이나 2진수가 같기 때문에 이럴경우는 1000 0000 일때 000 0000 이여도 -128로 정해둔 것 인가요? 아니면 다른 이유가 있을까요?

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]MemberRepository 에서 Page<Member> 하면 아래와 코드같이 오류가 발생합니다. 혹시 mysql로 이용하면 page와 호환성문제가 발생하나요? https://github.com/donghyoya/studySpringBoot/tree/main/data-jpa저의 깃허브 링크입니다Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2022-10-06 19:41:37.759 ERROR 2944 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository' defined in study.datajpa.repository.MemberRepository 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 org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable); Reason: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:936) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.21.jar:5.3.21] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.21.jar:5.3.21] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132) ~[spring-boot-test-2.7.1.jar:2.7.1] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-5.3.21.jar:5.3.21] 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.data.repository.query.QueryCreationException: Could not create query for public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable); Reason: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95) ~[spring-data-commons-2.7.1.jar:2.7.1] 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$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.1.jar:2.7.1] at java.base/java.util.Optional.map(Optional.java:265) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.util.Lazy.getNullable(Lazy.java:231) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.util.Lazy.get(Lazy.java:115) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.21.jar:5.3.21] ... 86 common frames omitted Caused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103) ~[spring-data-commons-2.7.1.jar:2.7.1] ... 108 common frames omitted Caused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findbyAge' found for type 'Member' at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367) ~[spring-data-commons-2.7.1.jar:2.7.1] at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250) ~[spring-data-commons-2.7.1.jar:2.7.1] 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-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384) ~[spring-data-commons-2.7.1.jar:2.7.1] 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-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89) ~[spring-data-jpa-2.7.1.jar:2.7.1] ... 112 common frames omitted 2022-10-06 19:41:37.762 ERROR 2944 --- [ main] o.s.test.context.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@2e554a3b] to prepare test instance [study.datajpa.repository.MemberRepositoryTest@8d52313] java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-5.3.21.jar:5.3.21] 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 'memberRepository' defined in study.datajpa.repository.MemberRepository 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 org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable); Reason: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:936) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.21.jar:5.3.21] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.21.jar:5.3.21] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.1.jar:2.7.1] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132) ~[spring-boot-test-2.7.1.jar:2.7.1] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.3.21.jar:5.3.21] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-5.3.21.jar:5.3.21] ... 71 common frames omitted Caused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable); Reason: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95) ~[spring-data-commons-2.7.1.jar:2.7.1] 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$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.1.jar:2.7.1] at java.base/java.util.Optional.map(Optional.java:265) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.util.Lazy.getNullable(Lazy.java:231) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.util.Lazy.get(Lazy.java:115) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.21.jar:5.3.21] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.21.jar:5.3.21] ... 86 common frames omitted Caused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract org.springframework.data.domain.Page study.datajpa.repository.MemberRepository.findbyAge(int,org.springframework.data.domain.Pageable)! No property 'findbyAge' found for type 'Member' at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93) ~[spring-data-jpa-2.7.1.jar:2.7.1] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103) ~[spring-data-commons-2.7.1.jar:2.7.1] ... 108 common frames omitted Caused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findbyAge' found for type 'Member' at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367) ~[spring-data-commons-2.7.1.jar:2.7.1] at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250) ~[spring-data-commons-2.7.1.jar:2.7.1] 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-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384) ~[spring-data-commons-2.7.1.jar:2.7.1] 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-2.7.1.jar:2.7.1] at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93) ~[spring-data-commons-2.7.1.jar:2.7.1] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89) ~[spring-data-jpa-2.7.1.jar:2.7.1] ... 112 common frames omitted 

6분33초에 있는 강력 새로고침은 어떻게 뛰우나요? 우클릭은 안되네요

영한님께서 일대다[1:N]강의에서 1:40 ~ 1:50초 사이에 DB설계관점에서 보면 외래키가 다쪽에외래키가 들어가는것이 좋으며, team쪽에 memberId가 있으면 team을 계속 insert해야하며,team이 중복이 되어 1이 아닌 N이 된다고 하셨는데 이 부분들이 이해하기가 어려웠습니다.외래키가 "다"쪽에 있으면 좋은 이유들과 이 부분들의 이해가 부족할 때 어떤 것들을 공부하면 좋을것 같을지도 알려주시면 감사하겠습니다.영한님의 좋은 강의 덕분에 처음 듣는 내용들인데도, 이해가 잘돼서 너무 좋네요. 좋은 강의 감사합니다 

[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]<html xmlns:th="http://www.thymeleaf.org"> 을 인식하지 못한다고 나옵니다! 어떤식으로 해결해야 할까요?

위의 글을 읽어보니 현재 기준 버전의babel-preset-env 에서 async await도 지원을해준다는사실을 알게되었습니다.헌데 강의 시점!!! 영상에서 궁금한것이있습니다선생님께서Promise의 처리를위해useBuiltIns:"usage",corejs:{ version:2} 를 설정해주셨고해당 설명을 통해 require구문 추가가 가능케 하셨고npm install code-js@2 를 통해 설치까지 해주셨습니다 헌데 영상기준으로async await 처리하기위해npm install regenerator-runtime 을 설치해주셨는데왜 regenerator-runtime은corejs에서 처럼 babel.config.js에서 설정을 안해주셔도되는건지 궁금합니다제 생각으론 폴리필의 추가는 babel.config.js에서 하는 것으로 알고있고 그렇다면 npm 설치 뿐만아니라코드상 옵션 설정도 해줘야할것같은데 그런 부분이 없는데도잘 빌드가되어서 이상하다고 생각해서 질문드립니다!!저는 아래 스크린샷처럼 regenerator-runtime을 추가해줘야한다고 생각했습니다

리사이클 뷰 때문에 윤활유가 안 발라진 톱니바퀴처럼 잘 안돌아가네요ㅠㅜ강의와는 다르게 리사이클 뷰 작성 시 아이템들의 거리가 매우 길어 코드를 몇번 비교했는지 모르겠네요ㅠㅜ정확한 원인은 모르겠지만 os의 차이 혹은 안드로이드 스튜디오의 버전 차이 일 수도???혹시 수강 하시는 분들 중에 리사이클뷰의 아이템들이 거리가 매우 길게 나올 경우아래 코드 참고 하시면 좋을 것 같습니다~!override fun onBindViewHolder(holder: RVAdapter.ViewHolder, position: Int) { holder.bindItems(items[position]) val layoutParams = holder.itemView.layoutParams layoutParams.height = 100 holder.itemView.requestLayout() }참조 링크 : https://odomm.tistory.com/entry/Kotlin-%EC%95%88%EB%93%9C%EB%A1%9C%EC%9D%B4%EB%93%9C-Recyclerview-%EC%95%84%EC%9D%B4%ED%85%9C-%EA%B0%84%EA%B2%A9-%EA%B5%AC%EB%B6%84%EC%84%A0-%ED%91%9C%EC%8B%9C

1 .C++은 EntryFramwork같은 라이브러리가 없을까요?실무에서는 ORM은 잘 사용하지 않는다고 하셨는데 혹시 사용을 안하는 이유가 있을까요?

안녕하세요. 제가 아래 코드 처럼 개인 프로젝트에 로그를 추가해보고 싶어 빈으로 등록 했습니다.@Configuration public class LogConfig { @Bean public LogTrace logTrace() { return new ThreadLocalLogTrace(); } }@Slf4j @Aspect//ㅇㅓ드바이저로 변환하여 저장(어드바이저 빌더) public class LogTraceAspect { //어드바이스 로직 private final LogTrace logTrace; public LogTraceAspect(LogTrace logTrace) { this.logTrace = logTrace; } }@Configuration public class AopConfig { @Bean public LogTraceAspect logTraceAspect(LogTrace logTrace) { return new LogTraceAspect(logTrace); } }┌─────┐| logTraceAspect defined in class path resource [co/kr/***/cofig/aop/AopConfig.class]↑ ↓| logTrace defined in class path resource [co/kr/****/cofig/log/LogConfig.class]└─────┘이렇게 순환 참조 에러가 나더라구요..log와 aop에서 서로 참조하고 있는데 어떻게 설계를 해야 할지 감이 잘 안옵니다.빈을 아래와 같이 한 곳에 모아두면 잘 동작 하지만 왜 동작 하는지 이해가 안되며 이렇게 해도 되는지 모르겠습니다.@Configuration public class AopConfig { @Bean public LogTraceAspect logTraceAspect(LogTrace logTrace) { return new LogTraceAspect(logTrace); } @Bean public LogTrace logTrace() { return new ThreadLocalLogTrace(); } }혹시 더 좋은 방법이 있을까요??감사합니다.