The dependencies of some of the beans in the application context form a cycle: 이런 오류가 나서 구글신의 도움을 받아 확인해 봤더니 @Bean 등록 시 순환 참조가 발생하였다고 하네요. @Around 에서 패키지 전체 클래스들을 대상으로 해서 SpringConfig 클래스도 대상이 되었고,프록시 클래스를 만들기 위해서 SpringConfig를 참조해야 하는데  SpringConfig 클래스에서는 TimeTraceAop 생성하는 부분이 들어가 있어서 TimeTraceAop 가 참조되는 문제가 있는 것으로 이해했습니다. (맞을까요..?ㅎㅎ) 그래서 @Around에 !target(hello.hellospring.SpringConfig) 을 넣어서 SpringConfig는 제외하는 것으로 해결하였습니다. 그럼 SpringConfig는 시간 측정이 안 되는거 아닌가..? 했는데 강의에서도 Member관련 메서드만 실행시간이 나오고, SpringConfig는 안 나왔더라구요 SpringConfig 실행시간 측정은 다른 방법으로 해야 하는걸까요? 궁금합니다 :)

이미 h2 db 가 1.4.200 버전으로 설치되어있어서 maven 설정파일에도  <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <version>1.4.200</version></dependency> 이렇게 적고 실행했는데 WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!) Exception in thread "main" 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) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:179) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:119) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:904) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:935) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:56) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54) at hellojpa.JpaMain.main(JpaMain.java:10) Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.h2.Driver] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:354) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:163) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:119) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:103) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:75) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:100) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ... 14 more Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.h2.Driver at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:342) at java.lang.ClassLoader.loadClass(ClassLoader.java:418) at java.lang.ClassLoader.loadClass(ClassLoader.java:351) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:351) ... 26 more이 오류가 떠서 jdbc:h2:~/test 로 먼저 연결해보고 jdbc:h2:tcp://localhost/~/test 다시 연결했는데도 해결이 안되었습니다. 그래서 h2db를 1.4.199로 재설치하고 (재설치할때 콘솔에서 데이터베이스 당연히 종료 했었습니다.) jdbc:h2:~/test 로 먼저 연결, jdbc:h2:tcp://localhost/~/test 다시 연결 과정을 동일하게 수행한 후 maven 설정파일도 <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <version>1.4.199</version></dependency> 로 다시 바꿔준 뒤에 새로고침해서 h2 1.4.199 라이브러리 설치된걸 확인한 후 어플리케이션을 실행해도 동일한 에러가 떴습니다. 기타 다른 질문사항에 올라온 java버전관련 해결방법이라던지 해봤는데 해결이 안됐습니다 ㅠ 참고하시라고 제 설정파일들과 소스파일 올려놓겠습니다. <pom.xml> <?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>jpa-basic</groupId> <artifactId>ex1-hello-jpa</artifactId> <version>1.0.0</version> <dependencies> <!-- JPA 하이버네이트 --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>5.3.10.Final</version> </dependency> <!-- H2 데이터베이스 --> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <version>1.4.199</version> </dependency> </dependencies></project> <persistence.xml> <?xml version="1.0" encoding="UTF-8"?><persistence version="2.2" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"> <persistence-unit name="hello"> <properties> <!-- 필수 속성 --> <property name="javax.persistence.jdbc.driver" value="org.h2.Driver"/> <property name="javax.persistence.jdbc.user" value="sa"/> <property name="javax.persistence.jdbc.password" value=""/> <property name="javax.persistence.jdbc.url" value="jdbc:h2:tcp://localhost/~/test"/> <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"/> <!-- 옵션 --> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.format_sql" value="true"/> <property name="hibernate.use_sql_comments" value="true"/> <!--<property name="hibernate.hbm2ddl.auto" value="create" />--> </properties> </persistence-unit></persistence> <JpaMain> package hellojpa;import javax.persistence.EntityManager;import javax.persistence.EntityManagerFactory;import javax.persistence.Persistence;public class JpaMain { public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("hello"); EntityManager entityManager = emf.createEntityManager(); entityManager.close(); emf.close(); }} <라이브러리 적용> <에러내용> /Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/bin/java -javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=55603:/Applications/IntelliJ IDEA.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/charsets.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/cldrdata.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/dnsns.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/jaccess.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/jfxrt.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/localedata.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/nashorn.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/sunec.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/ext/zipfs.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/jce.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/jfr.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/jfxswt.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/jsse.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/management-agent.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/resources.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/jre/lib/rt.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/ant-javafx.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/dt.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/javafx-mx.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/jconsole.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/packager.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/sa-jdi.jar:/Users/dongho/Library/Java/JavaVirtualMachines/corretto-1.8.0_275/Contents/Home/lib/tools.jar:/Users/dongho/Documents/jpa/ex1-hello-jpa/target/classes:/Users/dongho/.m2/repository/org/hibernate/hibernate-entitymanager/5.3.10.Final/hibernate-entitymanager-5.3.10.Final.jar:/Users/dongho/.m2/repository/org/jboss/logging/jboss-logging/3.3.2.Final/jboss-logging-3.3.2.Final.jar:/Users/dongho/.m2/repository/org/hibernate/hibernate-core/5.3.10.Final/hibernate-core-5.3.10.Final.jar:/Users/dongho/.m2/repository/org/javassist/javassist/3.23.2-GA/javassist-3.23.2-GA.jar:/Users/dongho/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar:/Users/dongho/.m2/repository/org/jboss/jandex/2.0.5.Final/jandex-2.0.5.Final.jar:/Users/dongho/.m2/repository/com/fasterxml/classmate/1.3.4/classmate-1.3.4.jar:/Users/dongho/.m2/repository/javax/activation/javax.activation-api/1.2.0/javax.activation-api-1.2.0.jar:/Users/dongho/.m2/repository/org/dom4j/dom4j/2.1.1/dom4j-2.1.1.jar:/Users/dongho/.m2/repository/org/hibernate/common/hibernate-commons-annotations/5.0.4.Final/hibernate-commons-annotations-5.0.4.Final.jar:/Users/dongho/.m2/repository/javax/persistence/javax.persistence-api/2.2/javax.persistence-api-2.2.jar:/Users/dongho/.m2/repository/net/bytebuddy/byte-buddy/1.9.5/byte-buddy-1.9.5.jar:/Users/dongho/.m2/repository/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.1.1.Final/jboss-transaction-api_1.2_spec-1.1.1.Final.jar hellojpa.JpaMain Feb 01, 2021 10:05:12 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation INFO: HHH000204: Processing PersistenceUnitInfo [ name: hello ...] Feb 01, 2021 10:05:12 PM org.hibernate.Version logVersion INFO: HHH000412: Hibernate Core {5.3.10.Final} Feb 01, 2021 10:05:12 PM org.hibernate.cfg.Environment <clinit> INFO: HHH000206: hibernate.properties not found Feb 01, 2021 10:05:12 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit> INFO: HCANN000001: Hibernate Commons Annotations {5.0.4.Final} Feb 01, 2021 10:05:12 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!) Exception in thread "main" 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) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:179) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:119) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:904) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:935) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:56) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54) at hellojpa.JpaMain.main(JpaMain.java:10) Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.h2.Driver] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:354) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:163) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:119) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:103) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:75) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:100) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ... 14 more Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.h2.Driver at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:342) at java.lang.ClassLoader.loadClass(ClassLoader.java:418) at java.lang.ClassLoader.loadClass(ClassLoader.java:351) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:351) ... 26 more Process finished with exit code 1

안녕하세요, 강사님 part4 강의를 듣다보니, 앞선 webpack 이나 vue CLI 2.x 버전에 비해서 3.x 버전이 훨씬 편리한데.. 실제 실무 환경에서 3.x 버전으로 사용해도 무리가 없는건가요?

// 회원가입 or 로그인하는 코드fun signinAndSignup(){ auth?.createUserWithEmailAndPassword(email_edittext.text.toString(), password_edittext.text.toString()) ?.addOnCompleteListener{ task -> if(task.isSuccessful){ println("_________________________________________task succesful") // creating a user account moveMainPage(task.result?.user) } else if(task.exception?.message.isNullOrEmpty()){ println("_________________________________________FUCKING ERROR") //show the error message Toast.makeText(this, task.exception?.message, Toast.LENGTH_LONG).show() } else { println("_________________________________________FUCKGING SIGNIN EMAIL") if(password_edittext.text.toString().length < 6){ println("_________________________________________FUCKGING SIGNIN EMAIL_PASSWORD LENGTH PROBLEM") println("_______________________________________${password_edittext.text.toString().length}") Toast.makeText(this, "패스워드는 최소 6자리 이상이여야 합니다. 다시 입력 바랍니다.", Toast.LENGTH_LONG).show() }else{ println("_________________________________________FUCKGING SIGNIN EMAIL_SIGNINEMAIL") println("_______________________________________${password_edittext.text.toString().length}") // login if you have account signinEmail() } } }} 프린트문은 지우고 하셔두 됩니다. // 회원가입 or 로그인하는 코드fun signinAndSignup(){ auth?.createUserWithEmailAndPassword(email_edittext.text.toString(), password_edittext.text.toString()) ?.addOnCompleteListener{ task -> if(task.isSuccessful){ // creating a user account moveMainPage(task.result?.user) } else if(task.exception?.message.isNullOrEmpty()){ //show the error message Toast.makeText(this, task.exception?.message, Toast.LENGTH_LONG).show() } else { // 비밀번호가 6자리 미만일 때 Toast 띄우기! if(password_edittext.text.toString().length < 6){ Toast.makeText(this, "패스워드는 최소 6자리 이상이여야 합니다. 다시 입력 바랍니다.", Toast.LENGTH_LONG).show() }else{ // 비밀번호가 6자리 이상일 때, 회원가입하고 로그인하기 signinEmail() } } }}

현재 클라우드 서버 쓰고있습니다. AWS도 쓰고있는데 거의 안쓰고있구요  코노하클라우드 서버에서 우분투위에서 노드 돌리고있습니다.  도메인을 설정하고싶은데 보통 노드에서 어떻게 하나요? php는 아파치에서 하는데 노드는 어떻게 하나용?

안녕하세요 앨런님~ 월요일 잘 보내셨나요 ~_~!! 다름이 아니라 DispatchWorkItem의 qos 관련해 질문이 있어 돌아왔습니다..! 허허... DispatchWorkItem(qos: .utility) { } 위와 같이 DispatchWorkItem 을 생성할 때 qos 파라미터를 통해 작업의 우선순위를 설정할 수 있는데요! 이는 기존 clousure 로 보낼 때, .async(qos: .utility) 에서 qos 를 설정해준 것과 대응되는 작업이지요? 그리고 1:20초 즈음 qos 없이 DispatchWorkItem 을 생성할때 defualt qos 는 global 이라고 설명 주시는것 같은데, 실제로 init 함수를 살펴보니 .unspecified로 지정이 되어있는 것 같더라고요. 혹시 제가 중간에 설명을 잘못 이해한걸까요 ?_? 감사합니다 :)

안녕하세요 강사님  H2 설치하고 띄웠는데 그림과 같이 오류가 났습니다. 제가 모르고 위의 설정이름에서 삭제버튼을 눌렀는데 그 이후에 이렇게 되었습니다.  염치없지만 도와주시면 감사하겠습니다...

안녕하세요 ㅠㅠ 제가 이걸보고 간단한 2d게임 도전하고 있었는데 .. UI -> Sprite 를 추가하여 Game 창을 딱 봤더니 ! 안보입니다 ㅎ z축도 바꿔보고 Order Layer 도 바꿔보고.. 해봤는데 Image일때만 보이고 Image를 끄고 하면 Sprite Renderer 에서 에니메이션이 움직이는데 보이지가 않습니다 ㅠㅠ 제발 부탁드립니다 해결책 없을까요.. 

선생님 강의 10:10-23쯤에서  df_seoul.to_csv("seoul_open_store.csv")로 엑셀파일을 만들었는데 주피터노트북에서는 한글이 잘 보이는데, 따로 엑셀파일로 열어보면..한글이 깨져있는 이유는 무엇인가요..?ㅠ 어떻게 해야 엑셀파일을 한글로 안깨지고 볼 수 있나요..?

print(figure1.print_count()) 를 할경우 결과값이 1도 나오고 바로 아래에 none이 나온 이유는 무엇인가요?

홈페이지 크기를 줄이다보니 중간에 Slide Content 글자가 겹쳐지는데 그거는 어떻게 해야 안겹쳐지게 할 수 있나요?

passport.authenticate('local', ...); 첫 번째 파라미터의 문자열 'local'로 어떻게 저희가 작성한 passport를 찾는 건지 이해가 되지 않아서 문의드립니다! 혹시 passport 디렉토리 내 파일명을 가지고 찾는건지.. 아니면 index.js의 local(); 로 인식을 하는 건지, 다른 방식인건지 궁금합니다!

https://zereight.tistory.com/392 https://spinos.tistory.com/43 좋은 하루 되시실 :D

좋은 강의 정말 잘 듣고 있습니다. 감사합니다. 그런데 제가 [nodemon] app crashed - waiting for file changes before starting... 오류를 종종 겪습니다. 그래서 예전에는 선생님 git hub에서 받았던 파일을 다 지우고 다시 다운받아서 실행하여 오류를 해결했습니다. 그런데 이제는 강의 중간이라 파일을 지우면 여태까지 작성했던 코드들이 다 날라가기 때문에 그렇게 하기가 두렵습니다. 혹시 이렇게 [nodemon] app crashed - waiting for file changes before starting... 오류가 나올 때 어떻게 해야 오류를 잡을 수 있을까요? > react-boiler-plate@1.0.0 dev C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master > concurrently "npm run backend" "npm run start --prefix client" [0]  [0] ┌────────────────────────────────────────────────────────────┐ [0] │                  npm update check failed                   │ [0] │            Try running with sudo or get access             │ [0] │            to the local update config store via            │ [0] │ sudo chown -R $USER:$(id -gn $USER) C:\Users\ADMIN\.config │ [0] └────────────────────────────────────────────────────────────┘ [1]  [1] > client@0.1.0 start C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master\client [1] > react-scripts start [1] [0]  [0] > react-boiler-plate@1.0.0 backend C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master [0] > nodemon server/index.js [0] [0] [nodemon] 1.19.4 [0] [nodemon] to restart at any time, enter `rs` [0] [nodemon] watching dir(s): *.* [0] [nodemon] watching extensions: js,mjs,json [0] [nodemon] starting `node server/index.js` [0] C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master\server\index.js:41 [0] app.post('/api/product/image', ko); [0]                                ^ [0] [0] ReferenceError: ko is not defined [0]     at Object.<anonymous> (C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master\server\index.js:41:32) [0]     at Module._compile (internal/modules/cjs/loader.js:1063:30) [0]     at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10) [0]     at Module.load (internal/modules/cjs/loader.js:928:32) [0]     at Function.Module._load (internal/modules/cjs/loader.js:769:14) [0]     at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) [0]     at internal/main/run_main_module.js:17:47 [0] [nodemon] app crashed - waiting for file changes before starting... [1] [HPM] Proxy created: /  -> http://localhost:5000 [1] i ｢wds｣: Project is running at http://192.168.0.4/ [1] i ｢wds｣: webpack output is served from  [1] i ｢wds｣: Content not from webpack is served from C:\Users\ADMIN\Desktop\boilerplate-mern-stack-master\boilerplate-mern-stack-master\client\public [1] i ｢wds｣: 404s will fallback to / [1] Starting the development server... [1]  [1] Browserslist: caniuse-lite is outdated. Please run: [1] npx browserslist@latest --update-db [1] Compiled with warnings. [1]  [1] ./src/components/views/UploadProductPage/UploadProductPage.js [1]   Line 2:9:    'Typography' is defined but never used          no-unused-vars [1]   Line 24:12:  'Images' is assigned a value but never used     no-unused-vars [1]   Line 24:20:  'setImages' is assigned a value but never used  no-unused-vars [1] [1] ./src/components/utils/FileUpload.js [1]   Line 52:21:  img elements must have an alt prop, either with meaningful text, or an empty string for decorative images  jsx-a11y/alt-text [1]   Line 53:30:  Unexpected template string expression                                                                      no-template-curly-in-string [1] [1] ./src/components/views/LoginPage/LoginPage.js [1]   Line 74:11:  'dirty' is assigned a value but never used        no-unused-vars [1]   Line 79:11:  'handleReset' is assigned a value but never used  no-unused-vars [1] [1] ./src/components/views/RegisterPage/RegisterPage.js [1]   Line 92:11:  'dirty' is assigned a value but never used        no-unused-vars [1]   Line 97:11:  'handleReset' is assigned a value but never used  no-unused-vars [1]  [1] Search for the keywords to learn more about each warning. [1] To ignore, add // eslint-disable-next-line to the line before. [1] [1] [HPM] Error occurred while trying to proxy request /api/users/auth from localhost:3000 to http://localhost:5000 (ECONNREFUSED) (https://nodejs.org/api/errors.html#errors_common_system_errors) npm run dev 입력 후 나오는 설명들 복사 붙여넣기 했습니다.

[Symbol.iterator]가 존재하지 않기에  for in문을 사용하는 것까진 이해를 했습니다! 실제 로그를 찍어봐도 undefined로 정의되지 않았더라구요. 어떤 것을 이용해서 순회를 진행하는지 알 수 있을까요? 감사합니다

안녕하세요 파이썬에서 input으로 값을 받으면 str형이 되는 것으로 이해합니다. 강의에서 while data != '4312'처럼 값을 비교하기 위해서 저는 input으로 받는 값을 int로 형변환 해서 사용을 했거든요, 저처럼 굳이 int로 바꾸지 않고, 비교 대상을 str로 바꿔서 해도 int와 비교하는 것처럼 동일한 의미로 비교가 되나요?

import React, {useEffect} from 'react' import { useDispatch } from 'react-redux'; import { getCartItems } from '../../../_actions/user_action'; function CartPage(props) { const dispatch = useDispatch(); useEffect(() => { let cartItems = [] if(props.user.userData && props.user.userData.cart){ if(props.user.userData.cart.length > 0){ props.user.userData.cart.forEach(item => { cartItems.push(item.id) }) dispatch(getCartItems(cartItems, props.user.userData.cart)) } } }, [props.user.userData]) return ( <div> CartPage </div> ) } export default CartPage cartPage.js에서 props.user.userData의 userData를 읽지 못할 경우 어디를 수정해야 할까요..??ㅠㅠ

readHTMLTable이 안되서 다르게 했는데 1 페이지는 잘 됐습니다. 근데 2 페이지부터 안되네요..ㅠ 무엇이 문제인가요?ㅠㅠ

pi@navio:~ $ sudo python get-pip.py Traceback (most recent call last):  File "get-pip.py", line 24244, in <module>     main()   File "get-pip.py", line 199, in main     bootstrap(tmpdir=tmpdir)   File "get-pip.py", line 82, in bootstrap     from pip._internal.cli.main import main as pip_entry_point   File "/tmp/tmpf7Nsou/pip.zip/pip/_internal/cli/main.py", line 60     sys.stderr.write(f"ERROR: {exc}")                                    ^ SyntaxError: invalid syntax 해당 모듈이 없다고 나오는데,,,,, 뭐가 잘 못된 것일까요?

network탭 확인해보니 10번까지는 잘 호출이 되는데 11번째부터는 계속 pending 상태입니다. axios를 호출하는 속도와 상관없이 무조건 11번쨰가 되는 순간에 더이상 호출이 안되고 pending상태에서 멈춰있네요.. 서버를 껏다 키면 또 10분까지는 잘 되다가 11번째에서부터 pending 상태입니다. 어떻게 해결해야할까요.. 실패한 요청의 network header 부분엔 이렇게 나와있습니다