안녕하세요! 수업 수강중인 학생입니다. 디지털마케팅 용어집 내용을 확인하고 싶은데, 링크 클릭시 아래처럼 자료가 확인이 안되어서요! 링크 수정 혹은 새로 링크 보내주실 수 있을까요? 감사합니다!

example1에서,  [L b] = [I y] 이런 식으로 구해지고 있는데,  앞 페이지에서 Ly = b라고 했으니까 y = L-1b여서 [L-1 b] = [I y] 라고 해야 하는게 아닌가 싶은데... 왜 아닌지 이유를 모르겠어요.

삭제된 글입니다

ssr이 seo때문이랑 속도 때문에 하는거라고 알고 있는데  그럼 각 페이지별로 getServerSideProps를 넣는것도 seo 때문에 다 넣으시는건가요 ? 아님 새로고침했을 때 로그인이 잠깐 풀려보이는 거때문에 넣으시는건가요 ?  검색엔진에 노출이 필요없는 페이지들은 ssr을 안해도 되는거라고 생각했는데.. 페이지를 만들면 무조건 서버사이드프롭스나 스태틱프롭스를 넣어줘야 되는걸까요 ?  회원가입같은 경우에는 검색엔진에 노출 안돼도 상관없지 않을까했는데, 새로고침 시 로그인이 잠깐 풀려보이는거 때문에 넣는건지 궁금해서 질문드립니다 

안녕하세요 김영한 선생님! 강의 항상 잘 듣고 있습니다ㅎㅎ MVC 패턴 그림을 보다가 문득 궁금한 점이 생겼는데요, 아직 많은 곳에서 (제가 다니는 회사 포함) DB에 직접 접근하여 데이터를 처리하는 객체를 DAO 라는 용어로 사용하고 있는데, 이게 특정 시점부터 Repository 라는 용어를 사용하는 것으로 권장이 된건지, 아니면 ORM을 어떤걸 사용하느냐에 따라 달라지는건지 궁금합니다!

안녕하세요. 슬랙 초대 요청드립니다.bale@place202.com 입니다. 좋은 강의 감사합니다.

안녕하세요. -a 옵션에 관련해서 질문드립니다. -a 옵션은 결국 도커의 실행 여부, 반환된 출력값을 보여준다. 라고 이해했는데 만약 -a없이 했을 경우 출력값만 나오지 않을 뿐 실행는 되고 있는 건가요 ?

안녕하세요. 엔티티에 @ManyToOne, @OneToMany등과 같이 관계로 설정된 컬럼에 접근하는 방법에 대해 알고 싶습니다. 예를 들어 Order 엔티티가 - id(PK) - user(관계로 설정된 값) 로 설정되어있다고 가정한다면 실제 테이블에는 user_id(FK)가 들어가게 될텐데요. Order.getUser().getId()를 통해 user_id를 가져오게 된다면 불필요하게 user테이블에 쿼리가 한번 더 나가더라구요. 따라서 단순히 Order테이블을 조회한다음 user_id컬럼값을 가져오고 싶은데 이에 대한 방법이 궁금합니다. 인터넷을 좀 찾아보니 @Column(name = "user_id", insertable = false, updatable = false)private Long userId; 위와 같은 형태로 설정해준다음 Order.getUserId()를 통해 가져오라고 나와있던데 맞는 방식인지 헷갈리네요. <질문> 1. API작업을 하다보면 연관관계의 객체를 통해 접근하는게 아닌 위처럼 단순 FK컬럼의 값만 가져오고 싶을때가 있을 것 같은데 어떻게 접근하는게 옳은 방식일까요? 2. 관계를 같이 저장할 때 객체를 통한 저장이 아닌 FK키를 직접 입력해서 저장해주고 싶습니다. 위 코드를 예로 들자면 Order엔티티에 user객체를 직접 저장하는게 아닌 user_id를 입력시켜서 저장시키고 싶습니다. (user객체를 직접 저장하는 경우 무조건 user를 한번 가져와야하기 때문에) 이런 경우에는 어떻게 접근하는게 좋을까요? 감사합니다.

혹시 react 및 react-native 또는 cocoapods의 버전에 대한 dependency가 있는지.. 추가로 npm install styled-component 는 설치 성공입니다. styled-components와 styled-component가 다른건지도 확인 부탁드립니다.

not은 반대로 나오는데요. A or B는 Ture 고 not은 반대니 False가 나와야 한다고 생각했는데 Ture가 나온 이유를 알 수 있을까요?

- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요.

안녕하세요. 수고가 많으십니다. 강의 너무 잘 듣고 있습니다. 그동안 흩어져있던 것들이 정리가 조금씩 되고 있어서 감사한 마음입니다. 강사님의 수고에 항상 감사드립니다. 60% 정도 현재 열심히 강의 수강 중에 왠만하면 질문을 안하려고 했었는데 해결이 안되는 부분이 있는데 도움이 너무 필요하여 적어봅니다. 강의 영상 : 스터디 조회 강사님께서 쿼리 여러번 나가는 부분을 1번이 나가도록 줄이는 부분이 있는데 강의 종료 부근처럼 @EntityGraph, //@NamedEntityGraph 를 작성했을 때는 1번만으로 잘 나가고 오류 메시지가 뜨지 않는데. 그 전에 쿼리가 여러번 나가는 부분으로 그대로 뒀을 때는 템플릿 오류가 납니다. isManager, isJoinable, isMember 를 타임리프에서 호출이 안되는 것 같습니다. 제가 어떤 부분을 놓쳤는지 아무리 해도 찾을 수가 없어서 이렇게 도움을 구해봅니다. 쿼리 여러 번 나갈 때는 왜 타임리프에서 호출이 계속 안되는지 좀 궁금해서요. 죄송하지만, 답변 좀 부탁 드리겠습니다. @EntityGraph, @NamedEntityGraph 를 주석처리했을 때 에러나는 부분을 첨부해드리겠습니다. 제가 놓친부분이나 있다면 도움 좀 구해봅니다. ■ StudyRepository.java @Transactional(readOnly = true) public interface StudyRepository extends JpaRepository<Study, Long> {     boolean existsByPath(String path); //    @EntityGraph(value = "Study.withAll", type = EntityGraph.EntityGraphType.LOAD) <----- 있을 때 쿼리 1번 정상,     Study findByPath(String path); } ■ Study.java //@NamedEntityGraph(name = "Study.withAll", attributeNodes = {    <---- 있을 때 쿼리 1번 정상 //        @NamedAttributeNode("tags"), //        @NamedAttributeNode("zones"), //        @NamedAttributeNode("managers"), //        @NamedAttributeNode("members")})             @Entity @Getter @Setter @EqualsAndHashCode(of = "id") @Builder @AllArgsConstructor @NoArgsConstructor public class Study {     @Id @GeneratedValue     private Long id;     @ManyToMany     private Set<Account> managers = new HashSet<>();     @ManyToMany     private Set<Account> members = new HashSet<>();     @Column(unique = true)     private String path;     private String title;     private String shortDescription;     @Lob @Basic(fetch = FetchType.EAGER)     private String fullDescription;     @Lob @Basic(fetch = FetchType.EAGER)     private String image;     @ManyToMany     private Set<Tag> tags = new HashSet<>();     @ManyToMany     private Set<Zone> zones = new HashSet<>();     private LocalDateTime publishedDateTime;     private LocalDateTime closedDateTime;     private LocalDateTime recruitingUpdatedDateTime;     private boolean recruiting;     private boolean published;     private boolean closed;     private boolean useBanner;     public void addManager(Account account) {         this.managers.add(account);     }     public boolean isJoinable(UserAccount userAccount) {         Account account = userAccount.getAccount();         return this.isPublished() && this.isRecruiting()                 && !this.members.contains(account) && !this.managers.contains(account);     }     public boolean isMember(UserAccount userAccount) {         return this.members.contains(userAccount.getAccount());     }     public boolean isManager(UserAccount userAccount) {         return this.managers.contains(userAccount.getAccount());     } } ■ fragments.html(강사님 체크아웃 버전 그대로..) <div th:fragment="study-banner" th:if="${study.useBanner}" class="row" id="study-logo">     <img th:src="${study.image}"/> </div> <div th:fragment="study-info">     <div class="row pt-4 text-left justify-content-center bg-light">         <div class="col-6">             <a href="#" class="text-decoration-none" th:href="@{'/study/' + ${study.path}}">                 <span class="h2" th:text="${study.title}">스터디 이름</span>             </a>         </div>         <div class="col-4 text-right justify-content-end">                 <span th:if="${!study.published}"                       class="d-inline-block" tabindex="0" data-toggle="tooltip" data-placement="bottom"                       title="스터디 공개 준비중">                     <button class="btn btn-primary btn-sm" style="pointer-events: none;" type="button" disabled>DRAFT</button>                 </span>             <span th:if="${study.closed}"                   class="d-inline-block" tabindex="0" data-toggle="tooltip" data-placement="bottom" title="스터디 종료함">                     <button class="btn btn-primary btn-sm" style="pointer-events: none;" type="button" disabled>CLOSED</button>                 </span>             <span th:if="${!study.recruiting}"                   class="d-inline-block ml-1" tabindex="0" data-toggle="tooltip" data-placement="bottom" title="팀원 모집중 아님">                     <button class="btn btn-primary btn-sm" style="pointer-events: none;" type="button" disabled>OFF</button>                 </span>             <span sec:authorize="isAuthenticated()" th:if="${study.isJoinable(#authentication.principal)}"                   class="btn-group" role="group" aria-label="Basic example">                     <a class="btn btn-primary" th:href="@{'/study/' + ${study.path} + '/join'}">                         스터디 가입                     </a>                     <a class="btn btn-outline-primary" th:href="@{'/study/' + ${study.path} + '/members'}"                        th:text="${study.members.size()}">1</a>                 </span>             <span sec:authorize="isAuthenticated()"                   th:if="${!study.closed && study.isMember(#authentication.principal)}" class="btn-group" role="group">                     <a class="btn btn-outline-warning" th:href="@{'/study/' + ${study.path} + '/leave'}">                         스터디 탈퇴                     </a>                     <a class="btn btn-outline-primary" th:href="@{'/study/' + ${study.path} + '/members'}"                        th:text="${study.members.size()}">1</a>                 </span>             <span sec:authorize="isAuthenticated()"                   th:if="${study.published && !study.closed && study.isManager(#authentication.principal)}">                     <a class="btn btn-outline-primary" th:href="@{'/study/' + ${study.path} + '/new-event'}">                         <i class="fa fa-plus"></i> 모임 만들기                     </a>                 </span>         </div>     </div>     <div class="row justify-content-center bg-light">         <div class="col-10">             <p class="lead" th:text="${study.shortDescription}"></p>         </div>     </div>     <div class="row justify-content-center bg-light">         <div class="col-10">             <p>                 <span th:each="tag: ${study.tags}"                       class="font-weight-light text-monospace badge badge-pill badge-info mr-3">                     <a th:href="@{'/search/tag/' + ${tag.title}}" class="text-decoration-none text-white">                         <i class="fa fa-tag"></i> <span th:text="${tag.title}">Tag</span>                     </a>                 </span>                 <span th:each="zone: ${study.zones}" class="font-weight-light text-monospace badge badge-primary mr-3">                     <a th:href="@{'/search/zone/' + ${zone.id}}" class="text-decoration-none text-white">                         <i class="fa fa-globe"></i> <span th:text="${zone.localNameOfCity}">City</span>                     </a>                 </span>             </p>         </div>     </div> </div> <div th:fragment="study-menu (studyMenu)" class="row px-3 justify-content-center bg-light">     <nav class="col-10 nav nav-tabs">         <a class="nav-item nav-link" href="#" th:classappend="${studyMenu == 'info'}? active" th:href="@{'/study/' + ${study.path}}">             <i class="fa fa-info-circle"></i> 소개         </a>         <a class="nav-item nav-link" href="#" th:classappend="${studyMenu == 'members'}? active" th:href="@{'/study/' + ${study.path} + '/members'}">             <i class="fa fa-user"></i> 구성원         </a>         <a class="nav-item nav-link" th:classappend="${studyMenu == 'events'}? active" href="#" th:href="@{'/study/' + ${study.path} + '/events'}">             <i class="fa fa-calendar"></i> 모임         </a>         <a sec:authorize="isAuthenticated()" th:if="${study.isManager(#authentication.principal)}"            class="nav-item nav-link" th:classappend="${studyMenu == 'settings'}? active" href="#" th:href="@{'/study/' + ${study.path} + '/settings/description'}">             <i class="fa fa-cog"></i> 설정         </a>     </nav> </div> ■ 에러로그 2021-05-02 09:49:10.346  INFO 11260 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet' 2021-05-02 09:49:10.347  INFO 11260 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet' 2021-05-02 09:49:10.349  INFO 11260 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 2 ms 2021-05-02 09:49:10.465 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         account0_.id as id1_0_,         account0_.bio as bio2_0_,         account0_.email as email3_0_,         account0_.email_check_token as email_ch4_0_,         account0_.email_check_token_generated_at as email_ch5_0_,         account0_.email_verified as email_ve6_0_,         account0_.joined_at as joined_a7_0_,         account0_.location as location8_0_,         account0_.nickname as nickname9_0_,         account0_.occupation as occupat10_0_,         account0_.password as passwor11_0_,         account0_.profile_image as profile12_0_,         account0_.study_created_by_email as study_c13_0_,         account0_.study_created_by_web as study_c14_0_,         account0_.study_enrollment_result_by_email as study_e15_0_,         account0_.study_enrollment_result_by_web as study_e16_0_,         account0_.study_updated_by_email as study_u17_0_,         account0_.study_updated_by_web as study_u18_0_,         account0_.url as url19_0_      from         account account0_      where         account0_.email=? 2021-05-02 09:49:10.468 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [VARCHAR] - [맑은요정] 2021-05-02 09:49:10.475 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         account0_.id as id1_0_,         account0_.bio as bio2_0_,         account0_.email as email3_0_,         account0_.email_check_token as email_ch4_0_,         account0_.email_check_token_generated_at as email_ch5_0_,         account0_.email_verified as email_ve6_0_,         account0_.joined_at as joined_a7_0_,         account0_.location as location8_0_,         account0_.nickname as nickname9_0_,         account0_.occupation as occupat10_0_,         account0_.password as passwor11_0_,         account0_.profile_image as profile12_0_,         account0_.study_created_by_email as study_c13_0_,         account0_.study_created_by_web as study_c14_0_,         account0_.study_enrollment_result_by_email as study_e15_0_,         account0_.study_enrollment_result_by_web as study_e16_0_,         account0_.study_updated_by_email as study_u17_0_,         account0_.study_updated_by_web as study_u18_0_,         account0_.url as url19_0_      from         account account0_      where         account0_.nickname=? 2021-05-02 09:49:10.475 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [VARCHAR] - [맑은요정] 2021-05-02 09:49:10.690 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         study0_.id as id1_4_,         study0_.closed as closed2_4_,         study0_.closed_date_time as closed_d3_4_,         study0_.full_description as full_des4_4_,         study0_.image as image5_4_,         study0_.path as path6_4_,         study0_.published as publishe7_4_,         study0_.published_date_time as publishe8_4_,         study0_.recruiting as recruiti9_4_,         study0_.recruiting_updated_date_time as recruit10_4_,         study0_.short_description as short_d11_4_,         study0_.title as title12_4_,         study0_.use_banner as use_ban13_4_      from         study study0_      where         study0_.path=? 2021-05-02 09:49:10.691 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [VARCHAR] - [주식스터디] 2021-05-02 09:49:11.153 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         members0_.study_id as study_id1_6_0_,         members0_.members_id as members_2_6_0_,         account1_.id as id1_0_1_,         account1_.bio as bio2_0_1_,         account1_.email as email3_0_1_,         account1_.email_check_token as email_ch4_0_1_,         account1_.email_check_token_generated_at as email_ch5_0_1_,         account1_.email_verified as email_ve6_0_1_,         account1_.joined_at as joined_a7_0_1_,         account1_.location as location8_0_1_,         account1_.nickname as nickname9_0_1_,         account1_.occupation as occupat10_0_1_,         account1_.password as passwor11_0_1_,         account1_.profile_image as profile12_0_1_,         account1_.study_created_by_email as study_c13_0_1_,         account1_.study_created_by_web as study_c14_0_1_,         account1_.study_enrollment_result_by_email as study_e15_0_1_,         account1_.study_enrollment_result_by_web as study_e16_0_1_,         account1_.study_updated_by_email as study_u17_0_1_,         account1_.study_updated_by_web as study_u18_0_1_,         account1_.url as url19_0_1_      from         study_members members0_      inner join         account account1_              on members0_.members_id=account1_.id      where         members0_.study_id=? 2021-05-02 09:49:11.156 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [92] 2021-05-02 09:49:11.172 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         tags0_.study_id as study_id1_7_0_,         tags0_.tags_id as tags_id2_7_0_,         tag1_.id as id1_9_1_,         tag1_.title as title2_9_1_      from         study_tags tags0_      inner join         tag tag1_              on tags0_.tags_id=tag1_.id      where         tags0_.study_id=? 2021-05-02 09:49:11.172 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [92] 2021-05-02 09:49:11.180 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         zones0_.study_id as study_id1_8_0_,         zones0_.zones_id as zones_id2_8_0_,         zone1_.id as id1_10_1_,         zone1_.city as city2_10_1_,         zone1_.local_name_of_city as local_na3_10_1_,         zone1_.province as province4_10_1_      from         study_zones zones0_      inner join         zone zone1_              on zones0_.zones_id=zone1_.id      where         zones0_.study_id=? 2021-05-02 09:49:11.180 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [92] 2021-05-02 09:49:11.193 DEBUG 11260 --- [nio-8080-exec-1] org.hibernate.SQL                        :      select         managers0_.study_id as study_id1_5_0_,         managers0_.managers_id as managers2_5_0_,         account1_.id as id1_0_1_,         account1_.bio as bio2_0_1_,         account1_.email as email3_0_1_,         account1_.email_check_token as email_ch4_0_1_,         account1_.email_check_token_generated_at as email_ch5_0_1_,         account1_.email_verified as email_ve6_0_1_,         account1_.joined_at as joined_a7_0_1_,         account1_.location as location8_0_1_,         account1_.nickname as nickname9_0_1_,         account1_.occupation as occupat10_0_1_,         account1_.password as passwor11_0_1_,         account1_.profile_image as profile12_0_1_,         account1_.study_created_by_email as study_c13_0_1_,         account1_.study_created_by_web as study_c14_0_1_,         account1_.study_enrollment_result_by_email as study_e15_0_1_,         account1_.study_enrollment_result_by_web as study_e16_0_1_,         account1_.study_updated_by_email as study_u17_0_1_,         account1_.study_updated_by_web as study_u18_0_1_,         account1_.url as url19_0_1_      from         study_managers managers0_      inner join         account account1_              on managers0_.managers_id=account1_.id      where         managers0_.study_id=? 2021-05-02 09:49:11.194 TRACE 11260 --- [nio-8080-exec-1] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [92] 2021-05-02 09:49:11.225 ERROR 11260 --- [nio-8080-exec-1] org.thymeleaf.TemplateEngine             : [THYMELEAF][http-nio-8080-exec-1] Exception processing template "study/view": An error happened during template parsing (template: "class path resource [templates/study/view.html]") org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/study/view.html]") at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:241) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parseStandalone(AbstractMarkupTemplateParser.java:100) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:666) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1393) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1138) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1077) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:327) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:115) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:81) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:126) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:81) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:105) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:133) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:92) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:149) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:218) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:211) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na] Caused by: org.attoparser.ParseException: Exception evaluating SpringEL expression: "study.isManager(#authentication.principal)" (template: "fragments.html" - line 245, col 46) at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:393) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parse(MarkupParser.java:257) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:230) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] ... 92 common frames omitted Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "study.isManager(#authentication.principal)" (template: "fragments.html" - line 245, col 46) at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:292) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:125) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.StandardIfTagProcessor.isVisible(StandardIfTagProcessor.java:59) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.AbstractStandardConditionalVisibilityTagProcessor.doProcess(AbstractStandardConditionalVisibilityTagProcessor.java:61) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleOpenElementEnd(TemplateHandlerAdapterMarkupHandler.java:304) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:278) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleOpenElementEnd(OutputExpressionInlinePreProcessorHandler.java:186) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:124) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.attoparser.HtmlElement.handleOpenElementEnd(HtmlElement.java:109) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.HtmlMarkupHandler.handleOpenElementEnd(HtmlMarkupHandler.java:297) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupEventProcessorHandler.handleOpenElementEnd(MarkupEventProcessorHandler.java:402) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.ParsingElementMarkupUtil.parseOpenElement(ParsingElementMarkupUtil.java:159) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parseBuffer(MarkupParser.java:710) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:301) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] ... 94 common frames omitted Caused by: org.hibernate.HibernateException: Unable to access lob stream at org.hibernate.type.descriptor.java.DataHelper.extractString(DataHelper.java:270) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.java.StringTypeDescriptor.wrap(StringTypeDescriptor.java:75) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.java.StringTypeDescriptor.wrap(StringTypeDescriptor.java:22) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.sql.ClobTypeDescriptor$1.doExtract(ClobTypeDescriptor.java:44) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:47) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:257) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:253) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:243) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:329) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:3059) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.loadFromResultSet(EntityReferenceInitializerImpl.java:336) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.hydrateEntityState(EntityReferenceInitializerImpl.java:263) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:109) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:124) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:105) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.collection.plan.AbstractLoadPlanBasedCollectionInitializer.initialize(AbstractLoadPlanBasedCollectionInitializer.java:87) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:707) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:76) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:108) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:2145) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$4.doWork(AbstractPersistentCollection.java:589) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:264) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:585) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:149) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$3.doWork(AbstractPersistentCollection.java:341) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$3.doWork(AbstractPersistentCollection.java:329) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:264) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:328) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.PersistentSet.contains(PersistentSet.java:179) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at com.jesustalk.domain.Study.isManager(Study.java:79) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na] at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:129) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:139) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:55) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:387) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:92) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:112) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:337) ~[spring-expression-5.3.6.jar:5.3.6] at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] ... 118 common frames omitted Caused by: org.postgresql.util.PSQLException: Large Objects may not be used in auto-commit mode. at org.postgresql.largeobject.LargeObjectManager.open(LargeObjectManager.java:243) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.largeobject.LargeObjectManager.open(LargeObjectManager.java:229) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.AbstractBlobClob.getLo(AbstractBlobClob.java:272) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.AbstractBlobClob.getBinaryStream(AbstractBlobClob.java:117) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.PgClob.getCharacterStream(PgClob.java:54) ~[postgresql-42.2.19.jar:42.2.19] at org.hibernate.type.descriptor.java.DataHelper.extractString(DataHelper.java:263) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] ... 159 common frames omitted 2021-05-02 09:49:11.229  WARN 11260 --- [nio-8080-exec-1] o.h.e.loading.internal.LoadContexts      : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@2a05c91<rs=HikariProxyResultSet@190585382 wrapping org.postgresql.jdbc.PgResultSet@707f242d> 2021-05-02 09:49:11.229  WARN 11260 --- [nio-8080-exec-1] o.h.e.l.internal.CollectionLoadContext   : HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries 2021-05-02 09:49:11.236 ERROR 11260 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/study/view.html]")] with root cause org.postgresql.util.PSQLException: Large Objects may not be used in auto-commit mode. at org.postgresql.largeobject.LargeObjectManager.open(LargeObjectManager.java:243) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.largeobject.LargeObjectManager.open(LargeObjectManager.java:229) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.AbstractBlobClob.getLo(AbstractBlobClob.java:272) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.AbstractBlobClob.getBinaryStream(AbstractBlobClob.java:117) ~[postgresql-42.2.19.jar:42.2.19] at org.postgresql.jdbc.PgClob.getCharacterStream(PgClob.java:54) ~[postgresql-42.2.19.jar:42.2.19] at org.hibernate.type.descriptor.java.DataHelper.extractString(DataHelper.java:263) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.java.StringTypeDescriptor.wrap(StringTypeDescriptor.java:75) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.java.StringTypeDescriptor.wrap(StringTypeDescriptor.java:22) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.sql.ClobTypeDescriptor$1.doExtract(ClobTypeDescriptor.java:44) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:47) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:257) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:253) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:243) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:329) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:3059) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.loadFromResultSet(EntityReferenceInitializerImpl.java:336) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.hydrateEntityState(EntityReferenceInitializerImpl.java:263) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:109) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:124) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:105) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.loader.collection.plan.AbstractLoadPlanBasedCollectionInitializer.initialize(AbstractLoadPlanBasedCollectionInitializer.java:87) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:707) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:76) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:108) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:2145) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$4.doWork(AbstractPersistentCollection.java:589) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:264) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:585) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:149) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$3.doWork(AbstractPersistentCollection.java:341) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection$3.doWork(AbstractPersistentCollection.java:329) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:264) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:328) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at org.hibernate.collection.internal.PersistentSet.contains(PersistentSet.java:179) ~[hibernate-core-5.4.10.Final.jar:5.4.10.Final] at com.jesustalk.domain.Study.isManager(Study.java:79) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na] at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:129) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:139) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:55) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:387) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:92) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:112) ~[spring-expression-5.3.6.jar:5.3.6] at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:337) ~[spring-expression-5.3.6.jar:5.3.6] at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.Expression.execute(Expression.java:125) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.StandardIfTagProcessor.isVisible(StandardIfTagProcessor.java:59) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.AbstractStandardConditionalVisibilityTagProcessor.doProcess(AbstractStandardConditionalVisibilityTagProcessor.java:61) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleOpenElementEnd(TemplateHandlerAdapterMarkupHandler.java:304) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:278) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleOpenElementEnd(OutputExpressionInlinePreProcessorHandler.java:186) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:124) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.attoparser.HtmlElement.handleOpenElementEnd(HtmlElement.java:109) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.HtmlMarkupHandler.handleOpenElementEnd(HtmlMarkupHandler.java:297) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupEventProcessorHandler.handleOpenElementEnd(MarkupEventProcessorHandler.java:402) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.ParsingElementMarkupUtil.parseOpenElement(ParsingElementMarkupUtil.java:159) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parseBuffer(MarkupParser.java:710) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:301) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.attoparser.MarkupParser.parse(MarkupParser.java:257) ~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:230) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parseStandalone(AbstractMarkupTemplateParser.java:100) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:666) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1393) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1138) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1077) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:327) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:115) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:81) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:126) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:81) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:105) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:133) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:92) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:149) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:218) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:211) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183) ~[spring-security-web-5.4.6.jar:5.4.6] at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na] 2021-05-02 09:49:11.262 ERROR 11260 --- [nio-8080-exec-1] s.e.ErrorMvcAutoConfiguration$StaticView : Cannot render error page for request [/study/%EC%A3%BC%EC%8B%9D%EC%8A%A4%ED%84%B0%EB%94%94] and exception [An error happened during template parsing (template: "class path resource [templates/study/view.html]")] as the response has already been committed. As a result, the response may have the wrong status code.

안녕하세요 강사님 ~! nvd3.js 강의 난이도가 생각보다 높은 편인데   d3.js를 리액트에서 사용할수도 있죠? url 테스트 페이지를 만들려 하는데 나중에  멘토링 서비스도 계획 있으신가요? 요즘은 리액트 많이 쓰니께  관련 강의를 만들어 주셔도 좋을것 같아요!

안녕하세요. 좋은 강의 잘 듣고 있습니다. PER을 구했더니, 노란셀처럼 음수인경우들이 있습니다. 원인을 확인해보니, PER(배)_y 가 결측치라서 PER(배)_x 에서 가져온 값들이었습니다. 이런 경우 음수는 제거해야하나요? 어떻게 처리해야하는지 문의 드립니다. 실제 네이버에서도 음수로 되어 있어서 전처리 오류는 아닙니다.

공유하기 대신 js:begin으로 다시하기 기능을 만들어보고 싶은데 resultName이나 Desc는 다시 시도하면 내용이 변경되어 나오는데 이미지가 append되어서 이전 이미지가 사라지지 않고 이미지 두개가 출력되어 나옵니다..! imgDiv.remove(); 를 begin()안에 넣어 삭제시키고자 하였었는데 기존 이미지까지 출력이 되지 않았습니다ㅜㅜ 이전 이미지를 사라지게 하려면 어떻게 수정하면 좋을지 여쭤보고 싶습니다.!

안녕하세요! 선생님  스프링과 MSA에 대해 관심이 많은 대학교 4학년입니다!  강의 마지막에 Event Resourcing, CQRS, Saga 패턴에 대한 설명을 듣고  마이크로스서비스 패턴에 대한 강의가 언제쯤 출시되는지 궁굽합니다! 그리고 상반기 중으로 스프링 부트 + 클라우드로 책을 출간하시는 걸로 알고 있는데 혹시  출간하시는 책에서 마이크로서비스 패턴에 대한 내용이 포함되어 있을까요?? 강의 듣고 너무 재밌어서 선생님 다음 강의가 너무 마렵습니다.... 빨리 내주세요!!!

jpa 프로그래밍 프로젝트 세팅 강좌를 따라하면서,  저는 이제 account 가 아니라 movie 라는 클래스를 만들고 이에 관한 매핑을 시도하려 했는데, movie table 은 만들어진 상태이고,  jparunner 를 통해 movie 를 추가하려 했는데,  Unknown entity: domain.Movie 이렇게 오류가 뜨더라구요.  @Entity 를 Movie class 에 붙여 줬고 get, set 함수를 작성하는 귀찮음을 덜기 위해 @Data 도 붙여주었는데 뭐가 문제일까요? 또한 javax.persistence.Entity 를 import 해서 그 entity annitation 을 써준 것 맞습니다.

삭제된 글입니다

제가 공공데이터로 하여금 실습의 활용 및 공부해보려하는데 항상 궁금했던게 사실 그냥 주피터노트북쓰면되지만... vscode에 익숙해지려고 vscode를 쓰는 편인데요. 주피터같은 경우에는 데이터프레임을 print하면 정렬되서 예쁘게 테이블화되서 나오는데... vscode나 아나콘다에서 지원하는 spyder의 경우 그렇진 않더라구요. 글자의 띄어쓰기등... 맞지가 않는데 이건 그냥 불편하게 볼 수 밖에 없을까요? ㅜㅜ

안녕하세요, 강의 재밌게 잘 따라가고 있습니다. 팩토리나 템플릿의 <String, String>이 어디에 사용되는지 궁금합니다.