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]"C:\Program Files\Java\jdk-11\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.3.3\lib\idea_rt.jar=50808:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.3.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Users\민규\OneDrive\바탕 화면\Study\jpashop\out\production\classes;C:\Users\민규\OneDrive\바탕 화면\Study\jpashop\out\production\resources;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-data-jpa\2.7.14\ad7d3be24a386ec45ce020b8922e9d056f7a6835\spring-boot-starter-data-jpa-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-validation\2.7.14\6e88ca463b6d7294f3206da9a57a645ca41b9665\spring-boot-starter-validation-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-thymeleaf\2.7.14\91a1934c6fae08a28665182ab802d41e0b44ffd\spring-boot-starter-thymeleaf-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-web\2.7.14\300b311c5fb98a2ee547df33a9d37782dddb496e\spring-boot-starter-web-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-aop\2.7.14\c4fb902f51ab09247de60c463761980d0d1a5888\spring-boot-starter-aop-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-jdbc\2.7.14\80b80408b6b75ce0dc2833cb07fd1ce6620d1f3b\spring-boot-starter-jdbc-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\jakarta.transaction\jakarta.transaction-api\1.3.3\c4179d48720a1e87202115fbed6089bdc4195405\jakarta.transaction-api-1.3.3.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\jakarta.persistence\jakarta.persistence-api\2.2.3\8f6ea5daedc614f07a3654a455660145286f024e\jakarta.persistence-api-2.2.3.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.hibernate\hibernate-core\5.6.15.Final\ab14b7cef1fdff654ca81923048a6034d6c7cfa7\hibernate-core-5.6.15.Final.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-jpa\2.7.14\d5f2e34cce48ed4d668e760db200e854cbbe4d87\spring-data-jpa-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aspects\5.3.29\dbcf1c1ce847b0fb186b5dde18968c9a46900f28\spring-aspects-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter\2.7.14\5506200907ff3c3458506a8e16866c684f28bdbd\spring-boot-starter-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.apache.tomcat.embed\tomcat-embed-el\9.0.78\a39a2f2839516a5d3c05a4c0d7d1252a114a5b91\tomcat-embed-el-9.0.78.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.hibernate.validator\hibernate-validator\6.2.5.Final\a68959c06e5f8ff45faff469aa16f232c04af620\hibernate-validator-6.2.5.Final.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.thymeleaf\thymeleaf-spring5\3.0.15.RELEASE\7170e1bcd1588d38c139f7048ebcc262676441c3\thymeleaf-spring5-3.0.15.RELEASE.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.thymeleaf.extras\thymeleaf-extras-java8time\3.0.4.RELEASE\36e7175ddce36c486fff4578b5af7bb32f54f5df\thymeleaf-extras-java8time-3.0.4.RELEASE.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-json\2.7.14\34fbe387993dafef8b2c29516ebe54fec7108181\spring-boot-starter-json-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-tomcat\2.7.14\e203b8792f4bcfaa1d07956adb6dee7014a20881\spring-boot-starter-tomcat-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-webmvc\5.3.29\fdaefee29fcb8459aab748b571d8bb7bb7fdb175\spring-webmvc-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-web\5.3.29\4cd333e48d9a05d05c05ae7426242ecfe4cfb681\spring-web-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aop\5.3.29\397c588ce63ba4c185a8c1bd2f1e9139075b3bf1\spring-aop-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.aspectj\aspectjweaver\1.9.7\158f5c255cd3e4408e795b79f7c3fbae9b53b7ca\aspectjweaver-1.9.7.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.zaxxer\HikariCP\4.0.3\107cbdf0db6780a065f895ae9d8fbf3bb0e1c21f\HikariCP-4.0.3.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-jdbc\5.3.29\25c0b36f780af98b2d3b554e9a6258ac599b6115\spring-jdbc-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.hibernate.common\hibernate-commons-annotations\5.1.2.Final\e59ffdbc6ad09eeb33507b39ffcf287679a498c8\hibernate-commons-annotations-5.1.2.Final.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.jboss.logging\jboss-logging\3.4.3.Final\c4bd7e12a745c0e7f6cf98c45cdcdf482fd827ea\jboss-logging-3.4.3.Final.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\net.bytebuddy\byte-buddy\1.12.23\d470526e8c4566c04e9ae5d3ccb62d1a7aa58986\byte-buddy-1.12.23.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\antlr\antlr\2.7.7\83cd2cd674a217ade95a4bb83a8a14f351f48bd0\antlr-2.7.7.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.jboss\jandex\2.4.2.Final\1e1c385990b258ff1a24c801e84aebbacf70eb39\jandex-2.4.2.Final.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml\classmate\1.5.1\3fe0bed568c62df5e89f4f174c101eab25345b6c\classmate-1.5.1.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.glassfish.jaxb\jaxb-runtime\2.3.8\c90a335a07c60db986f29d35b0f8ac0a18f0f989\jaxb-runtime-2.3.8.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-context\5.3.29\c374a72716d19220ca142efaab910adf5717c5d0\spring-context-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-orm\5.3.29\83953e2af9c1848227239b4695c7596a0f112da3\spring-orm-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-commons\2.7.14\c8c4825d930c9615bc7c9b42f433c9c14761fcaa\spring-data-commons-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-tx\5.3.29\dd26c6e31db036c3f96c24e8ff3b769a00dfc999\spring-tx-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-beans\5.3.29\be40f557f3fa52c703f00e127ff639f8cf499617\spring-beans-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-core\5.3.29\528eafe4cef7bccf3df290dd99ac5833a9756183\spring-core-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.slf4j\slf4j-api\1.7.36\6c62681a2f655b49963a5983b8b0950a6120ae14\slf4j-api-1.7.36.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-autoconfigure\2.7.14\4851957607f74fc4335858d66fb755f1b0c95006\spring-boot-autoconfigure-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot\2.7.14\762261093a3e15388216c45d6a9ba7fdc022b74d\spring-boot-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-logging\2.7.14\ea9c060fd1e4d17cdd8a9ba3dec8076c17d22a23\spring-boot-starter-logging-2.7.14.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\jakarta.annotation\jakarta.annotation-api\1.3.5\59eb84ee0d616332ff44aba065f3888cf002cd2d\jakarta.annotation-api-1.3.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.yaml\snakeyaml\1.30\8fde7fe2586328ac3c68db92045e1c8759125000\snakeyaml-1.30.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\jakarta.validation\jakarta.validation-api\2.0.2\5eacc6522521f7eacb081f95cee1e231648461e7\jakarta.validation-api-2.0.2.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.thymeleaf\thymeleaf\3.0.15.RELEASE\13e3296a03d8a597b734d832ed8656139bf9cdd8\thymeleaf-3.0.15.RELEASE.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jsr310\2.13.5\8ba3b868e81d7fc6ead686bd2353859b111d9eaf\jackson-datatype-jsr310-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.module\jackson-module-parameter-names\2.13.5\a401a99e7a45450fd3ef76e82ba39005fd1a8c22\jackson-module-parameter-names-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jdk8\2.13.5\1278f38160812811c56eb77f67213662ed1c7a2e\jackson-datatype-jdk8-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-databind\2.13.5\aa95e46dbc32454f3983221d420e78ef19ddf844\jackson-databind-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.apache.tomcat.embed\tomcat-embed-websocket\9.0.78\3d389e849edf92d5bc6a778a47428581773af3d6\tomcat-embed-websocket-9.0.78.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.apache.tomcat.embed\tomcat-embed-core\9.0.78\ff73a2003d4b066b9affdc70827f6e8d282ab723\tomcat-embed-core-9.0.78.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-expression\5.3.29\44ac795a057c4a6360063801c54a2d148e5a2808\spring-expression-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\jakarta.xml.bind\jakarta.xml.bind-api\2.3.3\48e3b9cfc10752fba3521d6511f4165bea951801\jakarta.xml.bind-api-2.3.3.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.glassfish.jaxb\txw2\2.3.8\66e0297f1196f0d15a776e699de1b8e6ac5d44dd\txw2-2.3.8.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.sun.istack\istack-commons-runtime\3.0.12\cbbe1a62b0cc6c85972e99d52aaee350153dc530\istack-commons-runtime-3.0.12.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.springframework\spring-jcl\5.3.29\4f84fbeec60adb1a50734b6077836e53844f0134\spring-jcl-5.3.29.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\ch.qos.logback\logback-classic\1.2.12\d4dee19148dccb177a0736eb2027bd195341da78\logback-classic-1.2.12.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-to-slf4j\2.17.2\17dd0fae2747d9a28c67bc9534108823d2376b46\log4j-to-slf4j-2.17.2.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.slf4j\jul-to-slf4j\1.7.36\ed46d81cef9c412a88caef405b58f93a678ff2ca\jul-to-slf4j-1.7.36.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.attoparser\attoparser\2.0.5.RELEASE\a93ad36df9560de3a5312c1d14f69d938099fa64\attoparser-2.0.5.RELEASE.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.unbescape\unbescape\1.1.6.RELEASE\7b90360afb2b860e09e8347112800d12c12b2a13\unbescape-1.1.6.RELEASE.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-annotations\2.13.5\136f77ab424f302c9e27230b4482e8000e142edf\jackson-annotations-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-core\2.13.5\d07c97d3de9ea658caf1ff1809fd9de930a286a\jackson-core-2.13.5.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\ch.qos.logback\logback-core\1.2.12\1d8e51a698b138065d73baefb4f94531faa323cb\logback-core-1.2.12.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-api\2.17.2\f42d6afa111b4dec5d2aea0fe2197240749a4ea6\log4j-api-2.17.2.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.h2database\h2\2.1.214\d5c2005c9e3279201e12d4776c948578b16bf8b2\h2-2.1.214.jar;C:\Users\민규\.gradle\caches\modules-2\files-2.1\com.sun.activation\jakarta.activation\1.2.2\74548703f9851017ce2f556066659438019e7eb5\jakarta.activation-1.2.2.jar" jpabook.jpashop.JpashopApplication. ____ _/\\ / ___'_ __ (_)_ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) )' |____| .__|_| |_|_| |_\__, | / / / /=========|_|==============|___/=/_/_/_/:: Spring Boot :: (v2.7.14)2023-08-16 15:16:35.129 INFO 6060 --- [ main] jpabook.jpashop.JpashopApplication : Starting JpashopApplication using Java 11.0.18 on DESKTOP-R06VPME with PID 6060 (C:\Users\민규\OneDrive\바탕 화면\Study\jpashop\out\production\classes started by 민규 in C:\Users\민규\OneDrive\바탕 화면\Study\jpashop)2023-08-16 15:16:35.136 INFO 6060 --- [ main] jpabook.jpashop.JpashopApplication : No active profile set, falling back to 1 default profile: "default"2023-08-16 15:16:36.872 INFO 6060 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.2023-08-16 15:16:36.903 INFO 6060 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 14 ms. Found 0 JPA repository interfaces.2023-08-16 15:16:38.080 INFO 6060 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)2023-08-16 15:16:38.094 INFO 6060 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]2023-08-16 15:16:38.094 INFO 6060 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.78]2023-08-16 15:16:38.273 INFO 6060 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext2023-08-16 15:16:38.273 INFO 6060 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2995 ms2023-08-16 15:16:38.545 INFO 6060 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]2023-08-16 15:16:38.624 INFO 6060 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.15.Final2023-08-16 15:16:38.916 INFO 6060 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}2023-08-16 15:16:39.035 INFO 6060 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...2023-08-16 15:16:39.190 INFO 6060 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.2023-08-16 15:16:39.228 INFO 6060 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect2023-08-16 15:16:39.542 ERROR 6060 --- [ main] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: jpabook.jpashop.domain.Order.member2023-08-16 15:16:39.543 WARN 6060 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: jpabook.jpashop.domain.Order.member2023-08-16 15:16:39.543 INFO 6060 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...2023-08-16 15:16:39.560 INFO 6060 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.2023-08-16 15:16:39.565 INFO 6060 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]2023-08-16 15:16:39.582 INFO 6060 --- [ main] ConditionEvaluationReportLoggingListener :Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.2023-08-16 15:16:39.615 ERROR 6060 --- [ main] o.s.boot.SpringApplication : Application run failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: jpabook.jpashop.domain.Order.memberat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1157) ~[spring-context-5.3.29.jar:5.3.29]at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:911) ~[spring-context-5.3.29.jar:5.3.29]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.29.jar:5.3.29]at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.14.jar:2.7.14]at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731) ~[spring-boot-2.7.14.jar:2.7.14]at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.14.jar:2.7.14]at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) ~[spring-boot-2.7.14.jar:2.7.14]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303) ~[spring-boot-2.7.14.jar:2.7.14]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292) ~[spring-boot-2.7.14.jar:2.7.14]at jpabook.jpashop.JpashopApplication.main(JpashopApplication.java:11) ~[classes/:na]Caused by: org.hibernate.AnnotationException: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: jpabook.jpashop.domain.Order.memberat org.hibernate.cfg.annotations.CollectionBinder.getCollectionBinder(CollectionBinder.java:325) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1977) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.cfg.AnnotationBinder.processIdPropertiesIfNotAlready(AnnotationBinder.java:968) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:793) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.boot.model.source.internal.annotations.AnnotationMetadataSourceProcessorImpl.processEntityHierarchies(AnnotationMetadataSourceProcessorImpl.java:225) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.boot.model.process.spi.MetadataBuildingProcess$1.processEntityHierarchies(MetadataBuildingProcess.java:239) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:282) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1460) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1494) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final]at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.29.jar:5.3.29]at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.29.jar:5.3.29]at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.29.jar:5.3.29]at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.29.jar:5.3.29]at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.29.jar:5.3.29]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.29.jar:5.3.29]... 16 common frames omittedProcess finished with exit code 1main메소드실행하면 이렇게 뜨고 종료 됩니다 h2 서버에 테이블도 안 만들어져요http://naver.me/x6ABJK1o <- domain 파일 주소

코드를 아직 이해하지 못했습니다. go 함수에서 a[y][x]가 1이기만 하면 무조건 벡터에 좌표를 넣고 return 하는 것 같은데, 이렇게 하면 가장 바깥에 있는 치즈의 면적 외에도 내부에 있는 치즈 (1)까지 전부 포함되어 벡터에 넣고 메인 함수에서 0으로 만드는 것 아닌가요? 가장 바깥쪽을 인식한다.가장 바깥쪽을 제거한다.면적을 카운트 한다.완전히 없어질 때까지 반복 이게 정답 로직인 것 같은데, 코드에서는 a[y][x]가 1이기만 하면 무조건 제거하는 것으로 해석되어 헷갈려서 질문드립니다.

문득 궁금한게 생겨 질문드립니다.강의에서는 Template Callback 패턴에서 Callback 인터페이스를 생성해서 사용하고있는데 아래코드처럼 기존 자바의 Runnable 인터페이스를 사용해서 콜백함수를 넘겨줘도 상관이없나요?  결과는 동일한것으로 보이는데 혹이 차이점이 있다면 무엇이 다른지 여쭤보고싶습니다 

안녕하세요강의자료 다운로드 자주하는질문의 AI답글데로 찾아도 보이지 않는데, 어디서 다운로드 하나요?

현재 ver1, ver2가 있는데 굳이 ver1 수강 후 에 ver2 둘다 수강할 필요 없이시작은 프리캠프, 강력한 CSS, 훈훈한 Javascript 수강 후에 ver2로 바로 수강하면 되나요?ver1과 ver2 차이가 많이 나나요?(중복내용인가요?) 

안녕하세요. 강의 감사히 잘 듣고 있는 수강생입니다.클로저 관련 내용을 듣다 궁금한 점이 있어 질문 드립니다.해당 문제와 관련하여 다른 분들도 동일한 질문을 여러 번 올려주셨는데 "명확하게 이렇기 때문이다"라는 답변이 없이 외부 링크를 걸어주시거나 단답형으로 답변을 주셨던 것 같아 다시 질문을 드립니다.def closure_ex1(): # Free variable series = [] # 클로저 영역 def averager(v): # series = [] # 주석 해제 후 확인 series.append(v) print('inner >>> {} / {}'.format(series, len(series))) return sum(series) / len(series) return averager avg_closure1 = closure_ex1()# 잘못된 클로저 사용 def closure_ex2(): # Free variable cnt = 0 total = 0 def averager(v): cnt += 1 # cnt = cnt + 1 total += v return total / cnt return averager avg_closure2 = closure_ex2()위 두 함수 closure_ex1과 closure_ex2를 비교하면 차이는series는 list, cnt와 total은 int형 변수라는 것,averager 함수 내부에서 series는 append 작업을 하고, cnt와 total은 값을 더해주는 작업을 한다는 것입니다. 그런데 closure_ex1에서는 오류가 나지 않고, closure_ex2에서는 averager 안에 nonlocal cnt, total을 작성하지 않으면 오류가 납니다.여쭤보고 싶은 것은,[1] closure_ex1의 averager 함수 내부에 nonlocal series 라는 코드를 작성하지 않아도 되는 이유가 무엇 때문인가 입니다.closure_ex2의 averager 안에 nonlocal cnt, total 이 필요한 것은 내부 함수의 영역은 local 영역이고 closure_ex2 내부이면서 average 외부인 영역은 nonlocal 영역이기 때문에 local 영역에서 free variable을 write 작업하기 위해서는 nonlocal 변수 선언이 필요한 것으로 알고 있습니다. 하지만 series 변수에 대해서는 왜 nonlocal series 라는 코드가 필요하지 않은 것인지요?제가 추가로 공부할 링크를 주시는 것은 감사하지만, 이 질문에 대한 답변을 명확하게 댓글로 작성해주시면 감사드리겠습니다. 다른 분들의 질문에 올려 주신 링크는 모두 읽어보았습니다. 또한 명확한 답변을 주시면 공부하시는 다른 분들께도 유용할 것이라고 생각합니다. 감사합니다.ps. 강의 영상을 확인하라는 답변도 주셨었는데, 수업에서 정확하게 list나 int형 자료의 scope 별 생명 주기까지 설명한 내용은 찾지 못하였으니 만약 해당 내용이 필요하다면 강의 시간을 알려주시면 감사드리겠습니다. 

도서관 애플리케이션을 실행하는 도중 아래와 같은 긴 오류가 떴습니다. 검색을 해도 잘 모르겠습니다 ㅠ어떻게 해야 할까요? Error executing DDL "drop table if exists user cascade " via JDBC StatementCaused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax error in SQL statement "drop table if exists [*]user cascade "; expected "identifier"; SQL statement:Error executing DDL "create table user (id bigint generated by default as identity, age integer, name varchar(20) not null, primary key (id))" via JDBC StatementCaused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax error in SQL statement "create table [*]user (id bigint generated by default as identity, age integer, name varchar(20) not null, primary key (id))"; expected "identifier"; SQL statement:Error executing DDL "alter table if exists user_loan_history add constraint FKa17jbf1po26eytdyvyj73b4rw foreign key (user_id) references user" via JDBC StatementCaused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax error in SQL statement "alter table if exists user_loan_history add constraint FKa17jbf1po26eytdyvyj73b4rw foreign key (user_id) references [*]user"; expected "identifier"; SQL statement: 

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요. 강의처럼 oreApplicationTests에서 오류가 나는데 오류내용이 달라서 질문드립니다 ,,ㅠㅠ오류내용Logging system failed to initialize using configuration from 'null'java.lang.IllegalStateException: Logback configuration error detected: ERROR in ch.qos.logback.core.ConsoleAppender[STDOUT] - No encoder set for the appender named "STDOUT". at org.springframework.boot.logging.logback.LogbackLoggingSystem.reportConfigurationErrorsIfNecessary(LogbackLoggingSystem.java:260) at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:247) at org.springframework.boot.logging.logback.LogbackLoggingSystem.reinitialize(LogbackLoggingSystem.java:319) at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:73) at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60) at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:187) at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:332) at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:298) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131) at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81) at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:356) at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46) at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1406) at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:545) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:187) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:119) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:191) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:130) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278) at java.base/java.util.Optional.orElseGet(Optional.java:364) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:105) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:104) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:68) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:147) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:127) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:90) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:55) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:102) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)java.lang.IllegalStateException: Failed to load ApplicationContext for [WebMergedContextConfiguration@597f48df testClass = hello.core.CoreApplicationTests, locations = [], classes = [hello.core.CoreApplication], contextInitializerClasses = [], activeProfiles = [], propertySourceLocations = [], propertySourceProperties = ["org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true"], contextCustomizers = [org.springframework.boot.test.autoconfigure.actuate.observability.ObservabilityContextCustomizerFactory$DisableObservabilityContextCustomizer@1f, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@6cc0bcf6, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@f5c79a6, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@49a64d82, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@37d3d232, org.springframework.boot.test.context.SpringBootTestAnnotation@a360168f], resourceBasePath = "src/main/webapp", contextLoader = org.springframework.boot.test.context.SpringBootContextLoader, parent = null] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:143) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:191) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:130) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278) at java.base/java.util.Optional.orElseGet(Optional.java:364) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:105) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:104) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:68) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:147) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:127) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:90) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:55) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:102) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)Caused by: java.lang.IllegalStateException: java.lang.IllegalStateException: Logback configuration error detected: ERROR in ch.qos.logback.core.ConsoleAppender[STDOUT] - No encoder set for the appender named "STDOUT". at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:347) at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:298) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131) at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81) at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:356) at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46) at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1406) at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:545) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:187) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:119) ... 72 moreCaused by: java.lang.IllegalStateException: Logback configuration error detected: ERROR in ch.qos.logback.core.ConsoleAppender[STDOUT] - No encoder set for the appender named "STDOUT". at org.springframework.boot.logging.logback.LogbackLoggingSystem.reportConfigurationErrorsIfNecessary(LogbackLoggingSystem.java:260) at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:247) at org.springframework.boot.logging.logback.LogbackLoggingSystem.reinitialize(LogbackLoggingSystem.java:319) at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:73) at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60) at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:187) at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:332) ... 97 more 

선생님 따라서 .\a.exe를 쳤는데 왜 오류가 뜨는건지 모르겠어요

항상 좋은 강의 감사드립니다!merged_order_month_count.iplot(kind='bar', theme='solar')iplot의 옵션 중에 그래프의 크기를 지정할 수 있나요 ?예를 들면, graph-object의 fig.update_layout(autosize=False, width=1000, height=800) 

EDA/pandas/시각화로 이커머스 구매 카테고리 분석 7분 11초에서 products_category_order = products_category_order.groupby('product_category_name_english').aggregate({'order_id':'count'}).rename(columns={'order_id':'order_count'}) 에 대해 설명하신것을 들었습니다. 이거는 agg를 통해 order id의 갯수만나타낸 건데 가격의 합계를 sum으로 같이 나타내고 싶으면 어떻게 코딩을 해야하는 것인지 궁금합니다.

안녕하세요! weather observation station 12 문제 풀이 중, not like 와 <> 의 차이에 대해 궁금한 부분이 생겨 문의드립니다. 커뮤니티 게시판을 살펴보며 유사한 문의와 답변을 확인했는데요. (where 해커랭크 문제풀이2 > 커뮤니티 > 21.1.9 작성 게시글)답변 내용 중, <>를 사용한 예시는 'happy'를 걸러내는 건 맞지만, '%happy%'를 걸러내는 조건문은 아닌 것 같아서요. <> '%happy%' 로 작성하면 unhappy라는 텍스트에는 happy라는 단어가 들어가있으니 출력이 되지 않을 것 같은데요...만약 출력이 된다면1) <>는 like의 의미가 없는 ≠의 의미이며2) <> '%happy%'에서 %는 와일드카드가 아닌 텍스트로 인식한다 로 이해하면 될까요??[참고 - 아래 문의 중 답변내용] 조건이 데이터 not like '%happy%'일 경우 happy라는 글자가 어떤식으로라도 들어가 있을 경우 데이터가 출력되지 않습니다. 즉, 'unhappy'라는 텍스트 데이터는 '%happy%'의 패턴에 포함되므로 출력되지 않습니다.그러나 조건이 데이터 <> 'happy'일 경우 'unhappy'라는 텍스트는 'happy'라는 텍스트와 같은 것이 아니므로 출력이 가능합니다.문제 풀어보시면서 여러가지 경우의 수에 대하여 not like와 <>으로 실험을 해보시면 이해가 빠르실 것으로 생각됩니다.[참고2 - 제가 풀이한 방법] SELECT DISTINCT cityFROM station WHERE city <> "a%" and city <> "e%"and city <> "i%"and city <> "o%"and city <> "u%"and city <> "%a"and city <> "%e"and city <> "%i"and city <> "%o"and city <> "%u"

구글링해보니 자바8이상이면 메서드 쓸 수 있다는데 저는 자바 11버전이거든요 왜 이럴까요ㅠㅠ

안녕하세요실무에서 db 스키마를 수정할때리퀴베이스를 사용하고 있습니다 그래서ddl-auto 를 이용하거나디비에서 직접 수정하는 방법은이력관리가 되지 않아서 지양하고관리 포인트를 리퀴베이스로만 하려고 하는데요어떤 방법은 좋은지 고민이 되네요 김영한님은 실무에서 어떤 기술로디비 스키마를 관리 하시는지 궁금합니다

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]안녕하세요. 강의 정말 잘 듣고있습니다! 대량의 데이터가 있는 상황에서 count 쿼리를 page가 바뀔 때 마다 날리는 것은 부담이 되는 것 같습니다.index를 적용하면 좋겠지만 전체 데이터에 대한 pagenation이라고 하면 index를 적용하기도 어려움이 있을 것 같습니다. 이런 경우에는 매일 특정 시간에 count 쿼리를 날려서 전체 개수를 캐시에 저장해두고 변경이 일어날 때마다 추가/삭제된 데이터의 개수를 +/- 해서 total count의 개수를 오차 없이 유지하는 방법을 생각 할 수 있을 것 같은데 제가 생각한 방식으로 캐시를 사용해도 괜찮을까요?

주키퍼는 카프카 클러스터 당 최소 1개씩 존재하는 건가요?주키퍼가 하는 역할이 무엇인지 잘 모르겠습니다..좀 더 추가적인 설명을 해주실 수 있을까요?추가로 집필하신 책에 주키퍼에 대한 자세한 설명이 있을까요?

안녕하세요 강사님!수업 도움이 정말 많이 되고있습니다, 감사합니다.다름이 아니라 그리디- 씨름선수 문제에서 질문이 있는데요!(181,60), (180,70), (170,72) 이렇게 꼭 키가 가장 큰 사람을 반드시 포함시키지 않아도세 명을 선발할 수 있다고 생각했는데 키가 가장 큰 사람을 반드시 포함시키고 세는 경우만 답이 되나요??그래서 아래와 같이 코드를 써봤는데 이렇게 하면 답이 틀릴까요?n=int(input()) data=[] for i in range(n): height,weight = map(int, input().split()) data.append((height, weight)) data.sort(key = lambda x : (x[0], x[1]), reverse=True) tmp_lst = [] for i in range(n): tmp=1 max = data[i][1] for j in range(i, n): if max<data[j][1]: max = data[j][1] tmp+=1 tmp_lst.append(tmp) max_cnt=tmp_lst[0] for i in range(n): if tmp_lst[i]>max_cnt: max_cnt=tmp_lst[i] print(max_cnt)

강의에 useRef 사용 이유에 대해선 안나오는거 같은데 아래 두 코드는 왜 사용된건지 설명해주실 수 있나요?? const mapRef = useRef<NaverMap | null>(null) mapRef.current = map

인프런 아이디 : ps@codeclick.co.kr인프런 이메일 : ps@codeclick.co.kr깃헙 아이디 : rhksgud123@naver.com깃헙 Username : KwanHyung Lee 댓글 달아놨는데 아직 소식이 없어서요! 부탁드립니다 ㅠㅠ

강의 ver1, ver2 뭘듣고 있는지 어떻게 알수있나요? ver1, ver2 표시가 안되어있어서요!html, css, javascript 는 노션 링크 따로있나요?