10분 40초쯤에 recomm_list li에 중앙 정렬을 위해 padding값을 주는 것 같은데 padding : 34px 35px 0 으로 어떻게 계산되는건지 궁금해요!혹시 다른 방법으로 정렬을 할 수 없을까요??

안녕하세요? 먼저 좋은 강의 감사드립니다. 실무에 많은 도움을 받고 있습니다.OAuth2.0 Roles(Resource Owner, Resource Server, Authorization Server, Client)의 개념에 대해 궁금한 점이 생겨서 아래 예시와 함께 질문드립니다.카카오톡과 연동한 게임을 보면 게임내 순위 화면에 카카오톡의 프로필 사진이 사용되는 것을 알 수 있는데요.이 경우 카카오톡의 OAuth2.0 인가 서버가 사용자 인증의 역할과 함께 리소스 서버(프로필 사진 제공)의 역할도 함께 수행하는 것으로 보이는데요 이게 맞을까요?감사합니다.

안녕하세요. 강의를 듣던 중 에러가 발생하여 질문드립니다. order service에 마리아디비 연동시 에러가 발생합니다.(pom.xml 파일에 마리아디비 의존성 추가 했습니다)order-service: application.ymlserver: port: 0 spring: application: name: order-service h2: console: enabled: true settings: web-allow-others: true path: /h2-console datasource: # driver-class-name: org.h2.Driver # url: jdbc:h2:mem:testdb # username: sa driver-class-name: org.mariadb.jdbc.Driver url: jdbc:mysql://localhost:3306/mydb username: root password: 0422 jpa: hibernate: ddl-auto: update show-sql: true generate-ddl: true eureka: instance: hostname: localhost instance-id: ${spring.application.name}:${spring.application.instance_id:${random.value}} # ???? ??? random?? ?? client: register-with-eureka: true # #eureka server? ???? ???? fetch-registry: true service-url: defaultZone: http://127.0.0.1:8761/eureka # ??? eureka ??? ?? logging: level: com.example.orderservice: DEBUG 에러 내용"C:\Program Files\Java\jdk-11.0.12\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-Dmanagement.endpoints.jmx.exposure.include=*" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2022.3.2\lib\idea_rt.jar=53302:C:\Program Files\JetBrains\IntelliJ IDEA 2022.3.2\bin" -Dfile.encoding=UTF-8 -classpath 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context-support-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\com\stoyanr\evictor\1.0.0\evictor-1.0.0.jar;C:\Users\JUNGMINJI\.m2\repository\com\thoughtworks\xstream\xstream\1.4.14\xstream-1.4.14.jar;C:\Users\JUNGMINJI\.m2\repository\xmlpull\xmlpull\1.1.3.1\xmlpull-1.1.3.1.jar;C:\Users\JUNGMINJI\.m2\repository\xpp3\xpp3_min\1.1.4c\xpp3_min-1.1.4c.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\boot\spring-boot-devtools\2.4.2\spring-boot-devtools-2.4.2.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\boot\spring-boot\2.4.2\spring-boot-2.4.2.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.4.2\spring-boot-autoconfigure-2.4.2.jar;C:\Users\JUNGMINJI\.m2\repository\com\h2database\h2\1.3.176\h2-1.3.176.jar;C:\Users\JUNGMINJI\.m2\repository\org\modelmapper\modelmapper\2.3.8\modelmapper-2.3.8.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\kafka\spring-kafka\2.6.5\spring-kafka-2.6.5.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\spring-context\5.3.3\spring-context-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\spring-messaging\5.3.3\spring-messaging-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\spring-tx\5.3.3\spring-tx-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\retry\spring-retry\1.3.1\spring-retry-1.3.1.jar;C:\Users\JUNGMINJI\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\JUNGMINJI\.m2\repository\org\apache\kafka\kafka-clients\2.6.0\kafka-clients-2.6.0.jar;C:\Users\JUNGMINJI\.m2\repository\com\github\luben\zstd-jni\1.4.4-7\zstd-jni-1.4.4-7.jar;C:\Users\JUNGMINJI\.m2\repository\org\lz4\lz4-java\1.7.1\lz4-java-1.7.1.jar;C:\Users\JUNGMINJI\.m2\repository\org\xerial\snappy\snappy-java\1.1.7.3\snappy-java-1.1.7.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\projectlombok\lombok\1.18.16\lombok-1.18.16.jar;C:\Users\JUNGMINJI\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.3\jakarta.xml.bind-api-2.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\spring-core\5.3.3\spring-core-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\springframework\spring-jcl\5.3.3\spring-jcl-5.3.3.jar;C:\Users\JUNGMINJI\.m2\repository\org\mariadb\jdbc\mariadb-java-client\2.7.1\mariadb-java-client-2.7.1.jar com.example.orderservice.OrderServiceApplication . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.4.2) 2023-04-15 21:57:34.182 INFO 14488 --- [ restartedMain] c.e.o.OrderServiceApplication : Starting OrderServiceApplication using Java 11.0.12 on BOOK-V7E4AM7Q4G with PID 14488 (C:\work\springcloud\msa_with_spring_cloud\order-service\target\classes started by JUNGMINJI in C:\work\springcloud\msa_with_spring_cloud\order-service) 2023-04-15 21:57:34.183 DEBUG 14488 --- [ restartedMain] c.e.o.OrderServiceApplication : Running with Spring Boot v2.4.2, Spring v5.3.3 2023-04-15 21:57:34.184 INFO 14488 --- [ restartedMain] c.e.o.OrderServiceApplication : No active profile set, falling back to default profiles: default 2023-04-15 21:57:34.208 INFO 14488 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable 2023-04-15 21:57:34.209 INFO 14488 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG' 2023-04-15 21:57:34.626 INFO 14488 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2023-04-15 21:57:34.670 INFO 14488 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 35 ms. Found 1 JPA repository interfaces. 2023-04-15 21:57:34.828 INFO 14488 --- [ restartedMain] o.s.cloud.context.scope.GenericScope : BeanFactory id=3562463c-b5e6-3ddc-abee-96251adfcd9a 2023-04-15 21:57:35.150 INFO 14488 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 0 (http) 2023-04-15 21:57:35.156 INFO 14488 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2023-04-15 21:57:35.156 INFO 14488 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.41] 2023-04-15 21:57:35.243 INFO 14488 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2023-04-15 21:57:35.243 INFO 14488 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1034 ms 2023-04-15 21:57:35.265 INFO 14488 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... Debug is true storeKey false useTicketCache true useKeyTab false doNotPrompt true ticketCache is null isInitiator true KeyTab is null refreshKrb5Config is false principal is null tryFirstPass is false useFirstPass is false storePass is false clearPass is false Acquire TGT from Cache Principal is null null credentials from Ticket Cache [Krb5LoginModule] authentication failed Unable to obtain Principal Name for authentication 2023-04-15 21:57:36.324 ERROR 14488 --- [ restartedMain] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization. java.sql.SQLInvalidAuthorizationSpecException: Could not connect to address=(host=localhost)(port=3306)(type=master) : GSS-API authentication exception at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:66) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:192) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1392) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:635) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:150) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.Driver.connect(Driver.java:89) ~[mariadb-java-client-2.7.1.jar:na] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.5.jar:na] at org.springframework.boot.autoconfigure.h2.H2ConsoleAutoConfiguration.lambda$h2Console$0(H2ConsoleAutoConfiguration.java:67) ~[spring-boot-autoconfigure-2.4.2.jar:2.4.2] at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyObjectProvider.ifAvailable(DefaultListableBeanFactory.java:2035) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.boot.autoconfigure.h2.H2ConsoleAutoConfiguration.h2Console(H2ConsoleAutoConfiguration.java:66) ~[spring-boot-autoconfigure-2.4.2.jar:2.4.2] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:212) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:203) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans(ServletContextInitializerBeans.java:97) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:86) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans(ServletWebServerApplicationContext.java:259) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:233) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:53) ~[spring-boot-2.4.2.jar:2.4.2] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:434) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.41.jar:9.0.41] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:451) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:200) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:159) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.2.jar:2.4.2] at com.example.orderservice.OrderServiceApplication.main(OrderServiceApplication.java:12) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2] Caused by: java.sql.SQLException: GSS-API authentication exception at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:169) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.com.send.authentication.SendGssApiAuthPacket.process(SendGssApiAuthPacket.java:133) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.authenticationHandler(AbstractConnectProtocol.java:752) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:553) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1387) ~[mariadb-java-client-2.7.1.jar:na] ... 78 common frames omitted Caused by: javax.security.auth.login.LoginException: Unable to obtain Principal Name for authentication at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.promptForName(Krb5LoginModule.java:819) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:682) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:592) ~[jdk.security.auth:na] at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663) ~[na:na] at java.base/java.security.AccessController.doPrivileged(Native Method) ~[na:na] at java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663) ~[na:na] at java.base/javax.security.auth.login.LoginContext.login(LoginContext.java:574) ~[na:na] at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:119) ~[mariadb-java-client-2.7.1.jar:na] ... 82 common frames omitted 2023-04-15 21:57:36.376 INFO 14488 --- [ restartedMain] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default] 2023-04-15 21:57:36.394 INFO 14488 --- [ restartedMain] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.27.Final 2023-04-15 21:57:36.447 INFO 14488 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final} 2023-04-15 21:57:36.484 INFO 14488 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... Debug is true storeKey false useTicketCache true useKeyTab false doNotPrompt true ticketCache is null isInitiator true KeyTab is null refreshKrb5Config is false principal is null tryFirstPass is false useFirstPass is false storePass is false clearPass is false Acquire TGT from Cache Principal is null null credentials from Ticket Cache [Krb5LoginModule] authentication failed Unable to obtain Principal Name for authentication 2023-04-15 21:57:37.498 ERROR 14488 --- [ restartedMain] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization. java.sql.SQLInvalidAuthorizationSpecException: Could not connect to address=(host=localhost)(port=3306)(type=master) : GSS-API authentication exception at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:66) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:192) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1392) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:635) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:150) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.Driver.connect(Driver.java:89) ~[mariadb-java-client-2.7.1.jar:na] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.5.jar:na] at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.2.jar:2.4.2] at com.example.orderservice.OrderServiceApplication.main(OrderServiceApplication.java:12) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2] Caused by: java.sql.SQLException: GSS-API authentication exception at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:169) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.com.send.authentication.SendGssApiAuthPacket.process(SendGssApiAuthPacket.java:133) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.authenticationHandler(AbstractConnectProtocol.java:752) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:553) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1387) ~[mariadb-java-client-2.7.1.jar:na] ... 55 common frames omitted Caused by: javax.security.auth.login.LoginException: Unable to obtain Principal Name for authentication at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.promptForName(Krb5LoginModule.java:819) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:682) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:592) ~[jdk.security.auth:na] at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663) ~[na:na] at java.base/java.security.AccessController.doPrivileged(Native Method) ~[na:na] at java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663) ~[na:na] at java.base/javax.security.auth.login.LoginContext.login(LoginContext.java:574) ~[na:na] at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:119) ~[mariadb-java-client-2.7.1.jar:na] ... 59 common frames omitted 2023-04-15 21:57:37.500 WARN 14488 --- [ restartedMain] o.h.e.j.e.i.JdbcEnvironmentInitiator : HHH000342: Could not obtain connection to query metadata java.sql.SQLInvalidAuthorizationSpecException: Could not connect to address=(host=localhost)(port=3306)(type=master) : GSS-API authentication exception at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:66) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:192) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1392) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:635) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:150) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.Driver.connect(Driver.java:89) ~[mariadb-java-client-2.7.1.jar:na] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.5.jar:na] at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.2.jar:2.4.2] at com.example.orderservice.OrderServiceApplication.main(OrderServiceApplication.java:12) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2] Caused by: java.sql.SQLException: GSS-API authentication exception at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:169) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.com.send.authentication.SendGssApiAuthPacket.process(SendGssApiAuthPacket.java:133) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.authenticationHandler(AbstractConnectProtocol.java:752) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:553) ~[mariadb-java-client-2.7.1.jar:na] at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1387) ~[mariadb-java-client-2.7.1.jar:na] ... 55 common frames omitted Caused by: javax.security.auth.login.LoginException: Unable to obtain Principal Name for authentication at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.promptForName(Krb5LoginModule.java:819) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:682) ~[jdk.security.auth:na] at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:592) ~[jdk.security.auth:na] at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665) ~[na:na] at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663) ~[na:na] at java.base/java.security.AccessController.doPrivileged(Native Method) ~[na:na] at java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663) ~[na:na] at java.base/javax.security.auth.login.LoginContext.login(LoginContext.java:574) ~[na:na] at org.mariadb.jdbc.internal.com.send.authentication.gssapi.StandardGssapiAuthentication.authenticate(StandardGssapiAuthentication.java:119) ~[mariadb-java-client-2.7.1.jar:na] ... 59 common frames omitted 2023-04-15 21:57:37.501 ERROR 14488 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] 2023-04-15 21:57:37.502 WARN 14488 --- [ restartedMain] 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.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] 2023-04-15 21:57:37.505 INFO 14488 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2023-04-15 21:57:37.512 INFO 14488 --- [ restartedMain] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2023-04-15 21:57:37.525 ERROR 14488 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed 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.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.2.jar:2.4.2] at com.example.orderservice.OrderServiceApplication.main(OrderServiceApplication.java:12) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:566) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.2.jar:2.4.2] Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.3.jar:5.3.3] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.3.jar:5.3.3] ... 22 common frames omitted Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.27.Final.jar:5.4.27.Final] ... 39 common frames omitted Process finished with exit code 0 Could not connect to address=(host=localhost)(port=3306)(type=master) 이 내용을 봐서, 마리아 디비 서버와 연결이 안되는 것 같은데 도무지 어디에서 잘못된 것인지 모르겠습니다..MySQLClient를 통해 마리아db서버에 정상적으로 접속했습니다.시도한 방법1. url, username, password 정보 확인2. org.mariadb.jdbc 버전 다운그레이드3. 마리아db 재설치 

안녕하세요. 선생님의 강의를 열심히 듣고 있는 직장인입니다.다름이 아니라 설계도면에서 특정 기호를 찾아야 하는 업무가 있는데 Selective Search를 이용하여 특정 기호의 이미지를 먼저 인식시키고, 그 다음에 입력되는 도면들에서 해당 기호가 있는 곳을 표시하는 작업을 해보고 싶습니다.해당 방법을 이용하면 될지, 아니면 더 좋은 방법이 있을지 문의드립니다.

add Chat Room 함수 작성시 await부분에서 오류가 나는데 await는 async내에서만 작성할 수 있다고 하더라구요. 어떻게 변경해야 한나요?

componentwillmount는 현재 지원 종료되어 아마 브라우저콘솔에서 경고메시지가 뜨는데,componentDidMount로 바꿔 작성하면 해결되는데 그렇게 해도 무방한가요?

testImplementation('org.springframework.boot:spring-boot-starter-test') { exclude group: ‘org.junit.vintage’, module: ‘junit-vintage-engine' } 에서 ‘org.junit.vintage’, module: ‘junit-vintage-engine'작은 따옴표가 이상한 거 같습니다복사 붙여넣기해서 IDE에 넣으면 작은 따옴표가 아니라 백틱 코드가 나오긴 하네요   

package hello.itemservice.message; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.context.MessageSource; import static org.assertj.core.api.Assertions.*; @SpringBootTest public class MessageSourceTest { @Autowired MessageSource ms; @Test void helloMessage(){ String result = ms.getMessage("hello", null, null); assertThat(result).isEqualTo("안녕"); } }강사님이 알려주신것 처럼 작성했더니 org.springframework.context.NoSuchMessageException: No message found under code 'hello' for locale 'null'. 이런 오류 메시지가 발생합니다.

안녕하세요 현재 ssafy를 목표로 코딩테스트를 준비하려고 합니다.1달도 남지 않은 시점에서 해당 강의를 어디까지 목표로 하고 들으면 좋을까요?

선생님 안녕하세요공유 자원과 임계구역 강의를 듣다가 9:58분 정도에 T1 eax 레지스터가 0으로 대입된다고 말씀해주셨는데 이전에 eax 값이 1이 증가한 후 suspend를 해서 다시 돌아오면 eax값이 1인 상태일거 같은데 1이 대입되어야 하는게 아닌지 궁금합니다.Thread 단위의 context switching이 일어날 때 레지스터 데이터들이 보존이 되는지도 궁금합니다..

커뮤니티 다른 글 확인해보니 작년에 음질 문제 생겼던 부분은 조용히 업데이트됐었네요. 아무 소식 없어서 계속 기다렸었는데 새소식에도 올려주셨으면 좋았을 것 같습니다.

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]코드 실행을 했으나 로컬호스트 8080으로 접속시 보여주신 에러화면이 아닌 연결실패 화면이 나와, 정상실행이 안된건지 스프링부트 3. 버전이라 다르게 나오는지 모르겠습니다3 이후부터는 자바17로 하라고 적혀있어 환경변수 및 인텔리제이 내부 프리퍼런스도 확인했습니다.8080포트가 이미 열려있어 그럴수 있다는 답변 내용을 보고 맥에서 확인을 해보고 일부러 오라클측 포트도 열어서 테스트해봤는데 이미 8080포트가 열려져있지 않아서 kill 할수도 없었습니다 어떻게 확인해야할까요?

제목 그대로

안녕하세요 전부 따라하고 사이트에 접속하니깐 아래 메세지만 나오는데 혹시 무슨 문제일까요?prod : working! 09-27비개발직군이다보니 개발지식이 전혀 없어서.... 뭐가 문제인지 잘 모르겠습니다...

자꾸 컴파일 에러가 나는데 어디가 문제인지 모르겠습니다 ㅜhttp://boj.kr/b4933bac5f0d4f0292717ee00279844a

제가 리액트 공부를 전에 해서 같이 사용해서 테스트 해보려고 하는데 ModelAttribute 개념에 대해 아직 제대로 숙달이 되지 않아, 만약에 리액트에서 사용하려면 어떻게 해야하는지 감이 안잡혀서 그래서 인터넷을 찾아서 하는중인데.. @GetMapping(value = "/add", produces = MediaType.APPLICATION_JSON_VALUE + ";charset=UTF-8") @ResponseBody public Map<String, String> getRegions(){ Map<String, String> regions = new LinkedHashMap<>(); //순서가 보장이 안됨 regions.put("SEOUL", "서울"); regions.put("BUSAN", "부산"); regions.put("JUJE", "제주"); return regions; } @GetMapping(value = "") @ResponseBody public List<DeliveryCode> deliveryCodes(){ List<DeliveryCode> deliveryCodes = new ArrayList<>(); deliveryCodes.add(new DeliveryCode("FAST", "빠른 배송")); deliveryCodes.add(new DeliveryCode("NORMAL", "일반 배송")); deliveryCodes.add(new DeliveryCode("SLOW", "느린 배송")); return deliveryCodes; } 이런 식으로 하고 있습니다. ModelAttribute 리액트에서 어떻게 사용할 수 있을까요?

스프링 데이터 JPA의 질문이 기본적인 CRUD를 지원해서 구현체를 안 만들어줘도 되는 것 아니었나요 ??JpaItemRepositoryV2를 만들면 이 부분이 깨지는 것 아닌지 궁금합니다.

수업을 듣다가 혼자서 만드는 것이라도 프로그램을 설계할 때 방대한 유저들의 데이터가 유입되었을 경우를 생각해보면서 설계하는 것이 좋을 것 같다는 생각이 들었습니다. 만약에 실제 프로그램이라면 여러 클래스 혹은 데이터베이스를 건드는 코드가 방대하게 있을텐데, 어떤 부분 혹은 코드가 성능을 저하시키고 어떤 코드가 잘 짜진 곳이라고 현업에서 어떻게 판단하시는지 너무 궁금합니다. ㅎㅎ 항상 강의 너무 유익하고 감사하게 듣고 있습니다. ^^

실행환경gradle 7.6.1java 17, jdk19spring boot 3.0.2제일 처음 환경을 설정한 후 테스트하는 코드에서 아래와 같은 로그가 발생합니다.java: cannot access javax.persistence.EntityManager class file for javax.persistence.EntityManager not found import static org.assertj.core.api.Assertions.*; import com.querydsl.jpa.impl.JPAQueryFactory; import jakarta.persistence.EntityManager; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.transaction.annotation.Transactional; import study.querydsl.entity.Hello; import study.querydsl.entity.QHello; @SpringBootTest @Transactional class QuerydslApplicationTests { @Autowired EntityManager em; @Test void contextLoads() { Hello hello = new Hello(); em.persist(hello); //현재 컴파일 에러가 나고 있는 부분 JPAQueryFactory query = new JPAQueryFactory(em); //em에서 javax.persistence.EntityManager 클래스를 찾을 수 없다는 에러가 나고 있음. QHello qHello = new QHello("h"); Hello result = query .selectFrom(qHello) .fetchOne(); assertThat(result).isEqualTo(hello); } }import문까지 모두 jakarta로 해주고 있습니다. 정상적으로 Q타입클래스가 되어있는데 JPAQueryFactory 생성자 부분의 에러가 전혀 사라지지 않습니다.버전문제인가 싶어서 여러번 버전을 확인했는데도, 제가 확인한 바로는 버전 호환에서는 문제 될 것이 없어보입니다.dataJPA가 3.0.X버전이상에서는 hibernate를 6+버전으로 맞춰줘야한다고 해서 확인해본 결과 hibernate는 다음과 같습니다.org.hibernate.orm:hibernate-core:6.1.7.Final추가적으로 build.gradle 코드를 올려놓겠습니다.plugins { id 'java' id 'org.springframework.boot' version '3.0.2' id 'io.spring.dependency-management' version '1.1.0' id "com.ewerk.gradle.plugins.querydsl" version "1.0.10" } group = 'study' version = '0.0.1-SNAPSHOT' sourceCompatibility = '17' configurations { compileOnly { extendsFrom annotationProcessor } } repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'com.github.gavlyukovskiy:p6spy-spring-boot-starter:1.5.6' compileOnly 'org.projectlombok:lombok' runtimeOnly 'com.h2database:h2' annotationProcessor 'org.projectlombok:lombok' // == 스프링 부트 3.0 이상일 때, querydsl 의존성 == implementation "com.querydsl:querydsl-core:5.0.0" implementation "com.querydsl:querydsl-collections" implementation("com.querydsl:querydsl-jpa:5.0.0:jakarta") annotationProcessor "com.querydsl:querydsl-apt:5.0.0:jakarta" annotationProcessor "jakarta.annotation:jakarta.annotation-api" annotationProcessor "jakarta.persistence:jakarta.persistence-api:3.1.0" testImplementation ('org.springframework.boot:spring-boot-starter-test') testImplementation 'jakarta.persistence:jakarta.persistence-api' testImplementation 'com.querydsl:querydsl-jpa:5.0.0' } tasks.named('test') { useJUnitPlatform() } //querydsl 세팅 시 def querydslDir = "$buildDir/generated/querydsl" querydsl { jpa = true querydslSourcesDir = querydslDir } sourceSets { main.java.srcDir querydslDir } configurations { querydsl.extendsFrom compileClasspath } compileQuerydsl { options.annotationProcessorPath = configurations.querydsl }

- 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 ~!파이썬 초보라 선생님 코드를 그대로 따라해 실행해보고 있는데요.def dict2(nums): # 가장긴 연속된변수를 여기다 저장할거임 longest = 0 dictionary = {} for num in nums: dictionary[num] = True for n in dictionary: # n보다 앞에 있는애가 있나? # 시작점 판별하는 조건문! if n-1 not in dictionary: cnt = 1 # 시작하면 일단 카운트1 target = n + 1 while target in n: # 연속된 값있는지! target += 1 # 다음 수 찾아야돼서 +1 cnt += 1 longest = max(longest, cnt) return longest nums = [100, 4, 200, 1, 3, 2] print(dict2(nums)) 코드실행시 다음과 같은 에러가 발생합니다.TypeError: argument of type 'int' is not iterable어떻게 해결해야될까요?그리고 max 함수가 최댓값을 가져온다고 하던데 longest가 어차피 0이면 max(cnt)만 해도 되지 않나요?