View 챕터 수강 중입니다.View 의 CBV 부터는 뭔가 새롭고, 헤비하고 그만큼 공부시간도 늘어나고 있네요.이번 수업에서 중간에 선생님께서 아래 이미지 처럼 말씀하셨는데,질문아래 이미지 처럼 CVB API:DetailView 기본목적인 템플릿 처리가 아니라 아래 이미지 처럼 다양한 응답 포맷으로 확장하려면 어디를 어떻게 어떻게 확장 해야하나요?그리고 템플릿처리가 아닌 다른처리를 위해 Bulit-in API를 확장하는 방식이 자주 쓰이는 방식으로 잘 익혀놔야하는건지? 궁금하고요또 향후 뒤쪽 수업에 더 자세히 배울수 있는내용인건지 궁금합니다.

만약 urls.py 에서 URL Cpatured Value에 uid라는 식별자로 받았으면CBV DetailView 클래스의 pk_url_kwarg 클래스변수를 당연히 재정의 해줘야하는데어떤식으로 하는지 궁금합니다.아예 DetailView 클래스를 상속받아서 확장할때클래스변수 model 이든 pk_url_kwargs 든 재정의 한다음확장한 블라블라DetailView클래스 로 .as_view() 메서드 호출하면 될꺼같은건 알겠는데커스텀클래스 만들지 않고 하는 방식이 있다면(?) 궁금합니다!그리고 보통 실무적으로/관례적으로 어떤방식으로 쓰이고 강사님은 어떨때 어떤방법을 선호 하시는지 궁금하고 그 이유도 궁금합니다.(100% 이방법이 옳다 이방법이 많이 쓰인다 라는게 없다는건 알지만 장고가 아직은 낯설어서 best practice를 알고싶어서 그렇습니다) 만약 아래 강의 슬라이드 코드를 기반으로 살펴보면아래코드처럼 as_view 메서드 호출 할 때 인자로 넘겨주면 되는건가요?그러면 as_view 메서드 부터 이후 로직에서 알아서 내부적으로 클래스변수에 setter 해주나요? (그런 로직이 있다면)post_detail1 = DetailView.as_view(mode=Post, pk_url_kwarg='uid')

JSP 형식으로 보여지지 않아요

 로그인 정상 진행되었고 로그아웃 api 요청 시 토큰값 정상적으로 전달하고 있습니다.api 요청 후 이런 에러가 발생해요에러가 해결이 안돼서 한번 봐주시면 감사하겠습니다그리고 만약 logoutUser 정상적으로 동작되면 해당 토큰을 만료시키는 방식인건가요? 강의 이해하기 쉽게 잘 알려주셔서 늘 감사합니다~~

강의 시청중 질문사항 있어서 올립니다.언리얼엔진5 스파르타 클래스 - 체인을 이용한 리타게팅 편에서20분 15초 구간 중, 타겟을 설정했을 시 소스 에셋과 타겟 에셋이 겹쳐서 보입니다.강의를 아무리 돌려봐도 이유를 잘 모르겠습니다. 버그인거 같기도 하구요.엔진 버전은 5.1.1 입니다. 알려주시면 감사하겠습니다~

좋은 강의 잘 보고 있습니다. 감사합니다.nginx에 대한 감이 잘 안잡혀서 그러는데,개발환경에서는 서버로 http 요청이 오면 개발서버가 그에따른 정적파일을 제공하고,운영환경에서 서버로 http 요청이오면 nginx가 그에따른 정적파일을 제공한다라고 이해하면 될까요 ?그리고 위에서 말하는 개발환경은 개발이 로컬 머신에서만 이루어지는 걸 의미하는게 맞을까요 ?

안녕하세요 제로초님 늦은 밤에 죄송합니다현재 이미지 업로드하고 미리보기까지 나오는거 확인하고 올렸는데 성공했다고만 뜨고 정작 이미지 파일만 빼고 post성공한거같습니다 그리고 게시글은 올려 지긴 하나 사진 빼고 내용만 나옵니다 지금까지 콘솔내용을 보고 Images에 어떻게 넣을까 고민하다가 postform하고 백에서 routes/post.js부분을 건드려봤지만 아무런 성과가 없었습니다 에러도 안나와서 어딜봐야할지 잘모르겠습니다 ㅠㅠ

 Binder.get(evn).bind("",bean.getClass());Binder.get(evn).bindOrCreate("",bean.getClass()); 해당 클래스 타입으로 Environment 빈 정보를 읽어서값을 바인딩해주고 null이 될경우 새 빈 오브젝트로 만들어준다고 하셨는데 1.여기서 바인딩 결과가 null이 될경우라는게 무슨 의 미인지 잘 이해가 안갑니다. 그리고 저희가 만든 @MyConfigurationProperties 어노테이션에는@Component가 메타어노테이션이 들어있고실제 스프링이 사용하는@ConfigurationProperties 에는@Component가 없더라구요@EnableConfigurationProperties에서는직접 레지스트리에 저장하는거같은데 제가 이해한게 맞을까요?

안녕하세요. 저같은사람이 없기를 바라며 오류 해결법을 올립니다...환경은 23년 기준 스프링부트. 스프링클라우드 모두 최신버전입니다. (대신 강의처럼 maven이 아닌 gradle입니다)23년 4월중순부터 강의를 잘 따라하다가 빌드후 실행하면 user-service에서 에러가 나는겁니다.openfeign 관련 에러였습니다.  org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'rabbitConnectionFactory': Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:220) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.context.event.AbstractApplicationEventMulticaster.retrieveApplicationListeners(AbstractApplicationEventMulticaster.java:264) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:221) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:413) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:419) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:370) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1036) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1003) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.cloud.context.named.NamedContextFactory.destroy(NamedContextFactory.java:113) ~[spring-cloud-context-4.0.1.jar:4.0.1] at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:200) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1177) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1170) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1084) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:597) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.4.jar:3.0.4] at com.example.userservice.UserServiceApplication.main(UserServiceApplication.java:20) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[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:568) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-3.0.4.jar:3.0.4] 2023-04-24T23:38:38.274+09:00 INFO 14780 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 2023-04-24T23:38:38.274+09:00 INFO 14780 --- [ restartedMain] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down' 2023-04-24T23:38:38.480+09:00 WARN 14780 --- [ restartedMain] o.s.b.f.support.DisposableBeanAdapter : Invocation of destroy method failed on bean with name 'inMemoryDatabaseShutdownExecutor': org.h2.jdbc.JdbcSQLNonTransientConnectionException: Database is already closed (to disable automatic closing at VM shutdown, add ";DB_CLOSE_ON_EXIT=FALSE" to the db URL) [90121-214] 2023-04-24T23:38:38.481+09:00 INFO 14780 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2023-04-24T23:38:38.484+09:00 INFO 14780 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. 2023-04-24T23:38:38.486+09:00 INFO 14780 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2023-04-24T23:38:38.509+09:00 INFO 14780 --- [ restartedMain] .s.b.a.l.ConditionEvaluationReportLogger : Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled. 2023-04-24T23:38:38.534+09:00 ERROR 14780 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController' defined in file [E:\study\1.Web\2.BackEnd\MSA\user-service\out\production\classes\com\example\userservice\controller\UserController.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'orderServiceClient': Error creating bean with name 'com.example.userservice.client.OrderServiceClient': FactoryBean threw exception on object creation at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:798) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:245) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1344) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1188) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:561) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:961) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:917) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.6.jar:6.0.6] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.4.jar:3.0.4] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.4.jar:3.0.4] at com.example.userservice.UserServiceApplication.main(UserServiceApplication.java:20) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[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:568) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-3.0.4.jar:3.0.4] Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'orderServiceClient': Error creating bean with name 'com.example.userservice.client.OrderServiceClient': FactoryBean threw exception on object creation at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:712) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:692) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:133) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:481) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1408) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1405) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1325) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:885) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789) ~[spring-beans-6.0.6.jar:6.0.6] ... 24 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.example.userservice.client.OrderServiceClient': FactoryBean threw exception on object creation at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:154) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:90) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1823) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:259) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1628) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1585) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1368) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1325) ~[spring-beans-6.0.6.jar:6.0.6] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:709) ~[spring-beans-6.0.6.jar:6.0.6] ... 39 common frames omitted Caused by: java.lang.IllegalStateException: PathVariable annotation was empty on param 0. at feign.Util.checkState(Util.java:136) ~[feign-core-12.1.jar:na] at org.springframework.cloud.openfeign.annotation.PathVariableParameterProcessor.processArgument(PathVariableParameterProcessor.java:52) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at org.springframework.cloud.openfeign.support.SpringMvcContract.processAnnotationsOnParameter(SpringMvcContract.java:280) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:126) ~[feign-core-12.1.jar:na] at org.springframework.cloud.openfeign.support.SpringMvcContract.parseAndValidateMetadata(SpringMvcContract.java:193) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:65) ~[feign-core-12.1.jar:na] at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:142) ~[feign-core-12.1.jar:na] at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:58) ~[feign-core-12.1.jar:na] at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:50) ~[feign-core-12.1.jar:na] at feign.Feign$Builder.target(Feign.java:197) ~[feign-core-12.1.jar:na] at org.springframework.cloud.openfeign.DefaultTargeter.target(DefaultTargeter.java:30) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:398) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:446) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:421) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1] at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:148) ~[spring-beans-6.0.6.jar:6.0.6] ... 50 common frames omitted Process finished with exit code 0에러는 다음과 같구요...Error creating bean with name 'rabbitConnectionFactory'를 아무리 검색해도 답이 안나오길래중간에 PathVariable annotation was empty on param 0.를 검색해서OrderSerivceClient 인터페이스에서 getOrders 함수의 @PathVariable에 value를 써주니까 에러가 사라졌습니다!! 뭔가 lib파일이 업데이트 됐다봅니다...  before@GetMapping("/order-service/{userId}/orders") List<ResponseOrder> getOrders(@PathVariable String userId); after@GetMapping("/order-service/{userId}/orders") List<ResponseOrder> getOrders(@PathVariable(value = "userId") String userId); 세시간동안 gradle로 초기화해보고 별짓 다해보다 포기하려던 찰나에 해결했습니다.저같은분은 없기를 바라겠습니다... 블로그 참조 https://lemontia.tistory.com/1046  혹시 다른방식으로 해결하신분 답변 부탁드립니다!

h2 애플리케이션은 jdbc:h2:tcp://localhost/~/test 즉, tcp통신을 통해 test.mv.db 파일에 데이터를 저장한다. h2.sh 애플리케이션을 실행하면 os에 org.h2.driver가 등록된다. jdbc가 제공하는 DriverManager는 os에 등록된 org.h2.driver를 관리하는 객체이다. 제가 이해한 내용이 맞을까요? 확인해주시면 감사합니다!

안녕하세요!2-H 4659 에서 flag =1 관련 조건문을 문의드립니다.if(i >= 1 && (prev == idx) && (idx != 'e' && idx != 'o')){flag = 1;}같은 글자가 연속으로 나오면 (i>=1 && prev==idx)flag=1 이해했습니다.(idx != 'e' && idx != 'o') 이 부분이 이해가 되지 않습니다..ㅠㅠee와 oo 연속을 허용한다는 뜻일까요,,그럼 답변 부탁드려요,,

 saju-frontend-vuejs 에서 npm install 을 한후 npm run serve 를 하면 ERROR Error: vuetify-loader is only for use with vuetify 2, replace it with webpack-plugin-vuetifyError: vuetify-loader is only for use with vuetify 2, replace it with webpack-plugin-vuetify at module.exports (C:\developer\svn\GiT_DIVIDE\PERSONAL\saju\saju-frontend-vuejs\node_modules\vue-cli-plugin-vuetify\index.js:32:13) at C:\developer\svn\GiT_DIVIDE\PERSONAL\saju\saju-frontend-vuejs\node_modules\@vue\cli-service\lib\Service.js:78:7 at Array.forEach (<anonymous>) at Service.init (C:\developer\svn\GiT_DIVIDE\PERSONAL\saju\saju-frontend-vuejs\node_modules\@vue\cli-service\lib\Service.js:76:18) at Service.run (C:\developer\svn\GiT_DIVIDE\PERSONAL\saju\saju-frontend-vuejs\node_modules\@vue\cli-service\lib\Service.js:215:10) at Object.<anonymous> (C:\developer\svn\GiT_DIVIDE\PERSONAL\saju\saju-frontend-vuejs\node_modules\@vue\cli-service\bin\vue-cli-service.js:36:9) at Module._compile (internal/modules/cjs/loader.js:1114:14) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1143:10) at Module.load (internal/modules/cjs/loader.js:979:32) at Function.Module._load (internal/modules/cjs/loader.js:819:12)와 같은 에러가 발생합니다. 2시간 동안 찾아봤지만 해결방법을 찾지 못해 도움을 구해봅니다. ㅠㅠㅠ 감사합니다.

페이지 F5 리프레쉬 하면 일기 내용이 다 사라지는데 이럴땐 파일 저장이라던가 다른 방법을 사용해야 하는걸까요?어떤 방법들이 있을까요

http://boj.kr/e996076928334d74bccc1687c148a5e9기존에 priority queue를 직접 vector로 구현했습니다.돌렸을 경우 예제도 맞고 직접 다른 예제를 돌렸을 때도 맞는 답이 나왔습니다.어디에서 틀렸는지 감이 안오네요 ㅠ< 틀렸습니다 > 라고 백준에 표시됩니다. 감사합니다.

파트2 강의를 들을때도 gsap유료버전을 구매하지 않아도 수업을 다 따라갈수 있나용?

IsEven, IsOdd 함수 구현 후 함수 포인터 사용해서 my_array 배열의 짝수/홀수 요소만 출력하는데요.IsEven, IsOdd 함수에 강의에서 설명하신 else return false;를 안붙이면 (아래 코드 36, 40째 줄 주석처리) IsOdd를 포인터로 호출하면 정상동작, IsEven을 포인터로 호출하면 모든 요소가 출력됩니다. 둘다 이상동작해야할 것 같은데 IsEven만 이상동작 하는 이유가 뭔가요?? #include <iostream>#include <string>#include <array>#include <limits>#include <vector>#include <algorithm>using namespace std;int func() { return 5;}int goo() { return 10;}void printNumbers(const array<int, 10>& my_array) { for (auto element : my_array) { if (element % 2 == 0) cout << element << " "; } cout << endl;}void printNumber2(const array<int, 10>& my_array, bool Is_even) { for (auto element : my_array) { if (Is_even && element % 2 == 0) cout << element << " "; if (!Is_even && element % 2 == 1) cout << element << " "; } cout << endl;}bool IsEven(const int& number) { if (number % 2 == 0) return true; //else return false;}bool IsOdd(const int& number) { if (number % 2 == 1) return true; //else return false;}void printNumber3(const array<int, 10>& my_array, bool (*check_fcn)(const int&)) {//함수포인터 써서 IsEven, IsOdd 불러움 for (auto element : my_array) { if (check_fcn(element)==true) cout << element << " "; } cout << endl;}int main() { cout << func << endl; /*이렇게 함수를 출력하면(func()가 아님) 메모리 주소값이 나옴. 즉, 함수도 주소를 가지고 있음. 즉, 함수도 포인터 써서 주소만 가지고 이것저것 할 수 있음.*/ func(); int(* fcnptr)() = func; /*func()는 func 함수를 실행시켜서 결과값을 가져온다는 의미. func의 주소값을 fcnptr에 대입하려면 func만 쓰야함.*/ cout << fcnptr() << endl; //변수 카운터를 써서 참조하려면 (변수)를 썼었는데, 함수포인터는 뒤에 앞 말고 뒤괄호인건가? fcnptr = goo; cout << fcnptr() << endl; array<int, 10> my_array = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; printNumbers(my_array); cout << endl; printNumber2(my_array, true); printNumber2(my_array, false); cout << endl; printNumber3(my_array, IsEven); return 0;}

Nextjs 버전을 내리고 강의 버전과 똑같이 맞춰서 사용할 지, 아니면 문법을 수정하여 학습해야 할 지 모르겠습니다.. index.tsx 구조 다른거부터 머리아프네요 ㅜㅜ... 강의에서 사용하신 버전도 알려주세요!

스택 문제풀이에서return not stack이나 while stack and stack[-1][1] 는 무엇을 의미하나요? 1. while stack and stack[-1][1] < temp : 2. while temp > stack and stack[-1][1] :1번과 2번 코드가 왜 다르게 작동할까요??감사합니다!

Users Microservice - JPA 수강중입니다.실습 따라서 작성하고 있는데 오류가 나는데 잘 모르겠습니다.UserServiceImpl 에서ModelMapper mapper = new ModelMapper();mapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);UserEntity userEntity = mapper.map(userDto, UserEntity.class);userEntity.setEncryptedPwd("encrypted_password");여기까지 값이 잘 찍히다가 userRepository.save(userEntity); <-- 여기서 오류가 납니다. 2023-04-24T21:55:59.923+09:00 ERROR 3608 --- [o-auto-1-exec-6] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.NullPointerException: Cannot invoke "com.example.userservice.jpa.UserRepository.save(Object)" because "this.userRepository" is null] with root causejava.lang.NullPointerException: Cannot invoke "com.example.userservice.jpa.UserRepository.save(Object)" because "this.userRepository" is null at com.example.userservice.service.UserServiceImpl.createUser(UserServiceImpl.java:32) ~[classes/:na] at com.example.userservice.controller.UserController.createUser(UserController.java:45) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[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:568) ~[na:na] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207) ~[spring-web-6.0.7.jar:6.0.7] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152) ~[spring-web-6.0.7.jar:6.0.7] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011) ~[spring-webmvc-6.0.7.jar:6.0.7] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914) ~[spring-webmvc-6.0.7.jar:6.0.7] at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:563) ~[tomcat-embed-core-10.1.7.jar:6.0] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.0.7.jar:6.0.7] at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:631) ~[tomcat-embed-core-10.1.7.jar:6.0] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.0.7.jar:6.0.7] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.7.jar:6.0.7] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.0.7.jar:6.0.7] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.7.jar:6.0.7] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.0.7.jar:6.0.7] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.7.jar:6.0.7] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-10.1.7.jar:10.1.7] at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]    

변수 포인터를 활용하여 변수값을 참조하려면 포인터 앞에 *을 붙였는데요.같은 방식으로 함수 포인터를 활용하여 함수값을 참조하려면 포인터뒤에 괄호()를 붙이는 문법이라고 생각하면 되나요?? 아래 코드에서 주석처리한 28번째 줄입니다. #include <iostream>#include <string>#include <array>#include <limits>#include <vector>#include <algorithm>using namespace std;int func() { return 5;}int goo() { return 10;}int main() { cout << func << endl; /*이렇게 함수를 출력하면(func()가 아님) 메모리 주소값이 나옴. 즉, 함수도 주소를 가지고 있음. 즉, 함수도 포인터 써서 주소만 가지고 이것저것 할 수 있음.*/ func(); int(* fcnptr)() = func; /*func()는 func 함수를 실행시켜서 결과값을 가져온다는 의미. func의 주소값을 fcnptr에 대입하려면 func만 쓰야함.*/ cout << fcnptr() << endl; //변수 카운터를 써서 참조하려면 (변수)를 썼었는데, 함수포인터는 뒤에 앞 말고 뒤괄호인건가? fcnptr = goo; cout << fcnptr() << endl; return 0;}