INFO: HHH000318: Could not find any META-INF/persistence.xml file in the classpath [土 10 24 00:40:20 JST 2020] Exception in thread "main" javax.persistence.PersistenceException: No Persistence provider for EntityManager named hello at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:85) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54) at hellojpa.JpaMain.main(JpaMain.java:9) Process finished with exit code 1 안녕하세요 강사님 일본에서 강의를 보고있는데 이런 에러가 뜨는데 어디가 잘못인지 잘모르겠네요 공부를 하고싶은데 처음부터 막혔네요 ㅠ파일 압축해서 링크 올렸습니다 도움 부탁드려요  https://drive.google.com/file/d/1kPvVoYZ1WSx77OdBGGq4YMMpOgyc2q_7/view?usp=sharing

삭제된 글입니다

해당 오류인데 혹시 선생님께서 어느 오류인지 설명해주실 수 있으실까요..? https://github.com/Spooder02/mernblog 깃 주소입니다!

안녕하세요. 1.  59) 인피니트스크롤에 관련해서 질문 드립니다.  하단부분 감지되었을때 이벤트가 중복 실행이 되는것 같아요. 이렇게 초기화면이 로딩이 되었다가 GET /api/post/skip/0 200 269.494 ms - 2740 감지 되면 두번 호출 하더라구요. GET /api/post/skip/6 200 263.764 ms - 2793 GET /api/post/skip/12 200 260.202 ms - 1285 ssaple.net 페이지에서도 한번 확인해보았는데 0 => 6 12 => 18 24 30(last) 이렇게 받아와지네요 2. 서버쪽은 IDE 콘솔에 잘 찍히는데 클라이언트쪽은 언제부턴가 브라우저에서 콘솔 내용이 보이질 않습니다. App.js 에서도 콘솔을 여러개 찍어도 브라우저 콘솔창에 보이질 않네요  그래서 어떤 값이 들어오는지 콘솔로 테스트를 할수가 없어서 네트워크 탭에서 확인하고 있어요 ㅠ 혹시 어떤 문제인지 아시는지 궁금합니다.!

1) sizeof와 pow함수를 이용해 short로 표현할 수 있는 숫자의 경우의 수를 표현하는 부분에서 총 2번의 뺄셈을 하셨는데 첫번째 뺄셈은 sign에 대해서 1비트를 빼준 것이고 두번째 뺄셈은 0을 표현하는 부분을 뺀 것이라고 하셨는데 이 부분이 잘 이해가 가지 않습니다. signed 와 unsigned 모두 0을 포함하는 것으로 알고 있는데 왜 0울 표현하는 부분을 뺀 것인지 궁금합니다. 2) 추가로 pow함수를 사용하실 때 std::를 사용하셨는데 pow함수를 사용할 수 있도록 <cmath>헤더를 include했는데 namespace std에 접근까지 해야하는 이유가 있는가 궁금합니다. using namespace std;를 사용했음에도 별도로 std::를 붙이시는 부분이 조금 의아했던 부분이었습니다. std와 pow함수와 서로 연관된 부분이라도 있나요?

배열에서 index에 따라 배열[index]  값 비교에서 맞으면 true false리턴은 봤는데 if(exps[i])처럼 조건문에서 이거는 해당 index에 exps[i]에 값만있으면 true인건가요  

for문을 이용해서 풀어봤는데 테스트케이스 1은 성공했지만 그 후부터는 실패했습니다. 제가 어떤게 부족한지 잘모르겠어서 질문을 올립니다. n,m=map(int,input().split())a=list(map(int,input().split()))cnt=0sum=0for i in range(len(a)): sum=a[i] if sum ==m: cnt+=1 elif sum<m: for j in range(i+1,len(a)): sum=sum+a[j] if sum==m: cnt+=1 break elif sum>m: break else: continueprint(cnt)

안녕하세요. 타일맵 강좌에서 버섯이 씬뷰에서는 나타나나 게임뷰에서는 보이지 않는 오류로 프로젝트를 새로 만들어 해결하였습니다. 현재 간단히 만들어 보려는 게임도 스프라이트가 동일하게 씬뷰에선 보이고 게임뷰에서는 안보이는데 이거 새로 만드는것 밖에는 해결방법이 없을까요?

1. 웹퍼블리셔는 거의 여성이 대다수 자리 잡고 있는 늬앙스가 있는데, 남성이 퍼블리셔를 하는 것에 대한 눈초리가 있는지 좀 궁금합니다. 2. 웹디 > 웹퍼블 > 프론트 > 백엔드 이 순서의 연봉 책정이라고 알고 있는데요, 웹퍼블 > 프론트로 넘어 가는 단계가 vuejs, react, angular 중에 하나를 제대로 다루게 되면 프론트라고 불릴 수 있는지 질문드립니다. 즉 프론트엔드 : HTML, CSS, Javascript, jquery, 프레임워크      퍼블리셔 : HTML, CSS, javascript, jquery 이 차이 인가요?

삭제된 글입니다

spring 프레임워크로 풀스택은 가능한데, 번번히 코딩테스트도 떨어지고 해서 우대사항맞추고싶어서 nodejs강의 시작했는데 역할은 같은거죠?

안녕하세요. 강의 내용을 활용해서 외부 api를 연동해서 연습중인데 dev 환경이라 그런지 cross origin 에러로 호출을 못하고 있습니다. 어떻게 해결을 해야할까요? 에러 로그------------------------------------------------------------------------------------------------------------ origin 'http://localhost:3060' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

ㅅㄷㄴㅅ

질문을합니다

삭제된 글입니다

https://drive.google.com/file/d/1SVf4ZY2fI4HCOkErXckM5ifBjKVFqD-o/view?usp=sharing Java 프로젝트는 잘 실행지만 xml 프로젝트는 오류가 뜨는데 잘 모르겠습니다.. 링크에 압축폴더로 첨부하였습니다. 타입 예외 보고 메시지 서블릿 [appServlet]을(를) 위한 Servlet.init() 호출이 예외를 발생시켰습니다. 설명 서버가, 해당 요청을 충족시키지 못하게 하는 예기치 않은 조건을 맞닥뜨렸습니다. 예외 javax.servlet.ServletException: 서블릿 [appServlet]을(를) 위한 Servlet.init() 호출이 예외를 발생시켰습니다. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.base/java.lang.Thread.run(Thread.java:832) 근본 원인 (root cause) org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'restApiController': Unsatisfied dependency expressed through field 'userService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginUserBean': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.base/java.lang.Thread.run(Thread.java:832) 근본 원인 (root cause) org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginUserBean': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:321) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.base/java.lang.Thread.run(Thread.java:832) 근본 원인 (root cause) org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginUserBean': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:372) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:277) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:453) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:527) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:497) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:650) org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:239) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:318) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.base/java.lang.Thread.run(Thread.java:832) 근본 원인 (root cause) java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131) org.springframework.web.context.request.SessionScope.get(SessionScope.java:55) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:360) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:277) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:453) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:527) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:497) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:650) org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:239) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:318) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.base/java.lang.Thread.run(Thread.java:832) 비고 근본 원인(root cause)의 풀 스택 트레이스를, 서버 로그들에서 확인할 수 있습니다.

(function() {     const stageElem = document.querySelector('.stage');     const houseElem = document.querySelector('.house');     const barElem = document.querySelector('.progress-bar');     const mousePos = {x:0, y:0};     let maxScrollValue;     function resizeHandler(){         maxScrollValue = document.body.offsetHeight - window.innerHeight;     }     window.addEventListener('scroll', function(){         const scrollPer = pageYOffset / maxScrollValue;         const zMove = scrollPer * 980 - 490;         houseElem.style.transform = `translateZ(${zMove}vw)`;         barElem.style.width = scrollPer * 100 + '%';     });     window.addEventListener('mousemove', function(e){         mousePos.x = -1 + (e.ClientX / window.innerWidth) * 2;         mousePos.y = 1 - (e.ClientY / window.innerHeight) * 2;         console.log(mousePos);     });     window.addEventListener('resize', resizeHandler);     resizeHandler(); })();

안녕하세요. 좋은 수업 감사드립니다. 강의 중 몇가지 질문드리고 싶어서요. 먼저  with app.test_request_context(): 를 쓰는 용도를 좀 자세히 알려주실 수 있을까요? 왜 필요한지 아직 감이 않와서요. 둘째로 html에서 js파일이나 css파일 부를때 url_for를 쓰면 특별한 장점이 있나요?? 

#include<stdio.h> int main()  { int second = 0, minute = 0, hour = 0; while (second >= 0) { printf("Input seconds : "); scanf("%d", &second); minute = second / 60; second %= 60; hour = minute / 60; minute %= 60; while(second>=0){ printf("%d hours, %d minute, %d seconds\n", hour, minute, second); break; } } printf("good bye"); return 0; } 코드가 더 무거워져 장기적으로 봤을 떄 이런 코드는 자제하는 것이 좋을까요?

영한님 안녕하세요  영한님 책 49 ~ 50 페이지 및 SQL 중심적인 개발의 문제점 강의를 보면서 객체 그래프 내용에 관해서 궁금한게 있어서 질문드립니다. 객체와 연관관계가 있는 모든 객체 그래프를 가져오는건 현실성이 없다고 하셨는데 모든 객체 그래프를 가져오지 않는 이유가 성능 문제나, 메모리에 부담에 되서 일반적인 경우에서는 안가져오는 건가요?