안녕하세요하이버네이트는 변경되는 값을 캐쉬에 저장해놨다가 persist나 flush신호가 있을때 db에 값을 업데이트한다고 알고있는데요,따로 flush를 주지않으신거같은데 addStock등을 활용해서 값을 변경했을때 DB에서 자동으로 플러쉬가 나가는건가요?

print('{:>5s}'.format('nice'))  여기서 문자열인 경우 print('{:>5}'.format('nice'))  s를 안붙여도된다고 했는데 붙여도 똑같은 값이 나오는데 가독성상 저는 붙이고 싶은데 붙여도올바른 방법인가요?

head부분에 <script defer>구문 <script>를 사용하면 안되는 건가요 해봤는데 안되는것 같아서 이해가 안되서요 다른곳에서 봤지만 어떤 분은 js파일을 만들고 head부분에         <script defer src="파일이름.js"></script>이렇게 알려주시는 분이 있어서 질문 합니다!

삭제된 글입니다

print('{:4d}'.format(42))  print('{:>4d}'.format(42)) 둘이 실행값이 왜 같을까요?  분명 강의 설명에서   :>4d 로 하면 4공간을 확보한 후  왼쪽으로 공백으로 확보하고 42로 포맷한다고 했어요 그래서 결론은 :>4d 의 결과값을  (공백)(공백)42가 나오는게 맞아요 그런데 :4d로 하면 반대로가 된다고 분명히 설명을 했는데 결과값이 같네요?? 강의 내용대로라면 결과값이 42(공백)(공백) 되어야 할텐데요 왜죠?

removeTodo(todoItem, index) 위와 같이 했을 때 제 콘솔에는 undefined undefined 이렇게 나옵니다. 왜 이럴까요?

이제 리뷰를 하고, git 에서 소스를 다운받아 비교하면서 실행시키는 중입니다.  처음에는 history 문제로 세션문제가 발생하여 최신 것을 설치 후 해결하였으나,  처음 화면에서 로그인이 끝난후 어떠한 페이지나 동작을 시켜도  0.chunk.js:126941 Uncaught Could not find router reducer in state tree, it must be mounted under "router" Error: Could not find router reducer in state tree, it must be mounted under "router" 에러가 발생하며 , ReactDOM.render(<App />, document.getElementById('root'));  에서  표시되고  아래에 webpack_ require_  여러곳에서 표시 됩니다. 거의 모든 동작을 시켜도 동일한 메시지가 발생하고 있습니다.

삭제된 글입니다

 docker설치하는 방법이 여러가지가 있는데 대표적으로 우분투에서 제공하는 docker.io 설치랑 docker 공홈에서 제공하는 docker-ce 설치가 있는데 docker-ce로 설치할 경우 kubeadm 설치법이 조금 달라질수 있나요?  아니면 구조가 조금 틀려지는 건가요? 

기본편 v1.0 pdf 파일 26페이지에서  위 쪽에 final을 지워야 하는 거 아닌가요?? 강의에서는 final은 초기값을 받아야한다고 지워주셨는데 강의 자료에서는 final이 남아있어서 글 남깁니당 쌤 진짜 강의 들으면 들을수록 넘 좋네요.... 감사합니다😍

이거 leetcode 에서 먼저 풀어보고 강의를 듣는게 좋을까요?? 아니면 강의를 먼저 듣고 문제를 직접 푸는게 좋을까요??? 코딩 테스트에 맞춰서 공부하려면 어떻게 하는게 좋을까요?? 예전에 leetcode top 100 에서 easy 만 먼저 풀었던 적이 있는데 medium 부터는 손도 못대겠더라구요 ㅠㅠ

안녕하세요 생명주기 파트 수업을 듣던 중에 궁금한 것이 생겨서 질문드립니다 ^^; <script>   import { beforeUpdate, afterUpdate } from 'svelte';   let num = 0;   let p;   function handleClick() {     num += 1;   }   beforeUpdate(() => {     console.log('beforeUpdate', p);   })   afterUpdate(() => {     console.log('afterUpdate', p);   }) </script> <button on:click={handleClick}>Add</button> <p bind:this={p}>{num}</p> 위 코드를 실행하면 아래처럼 결과가 나옵니다. 첫번째의 beforeUpdate, 두번째의 afterUpdate는 페이지 로딩 전 후 일 것이고 세번째 beforeUpdate 로그는 코드의 마지막줄인  <p bind:this={p}>{num}</p> 에 의해서 DOM이 다시 수정되어 나온 결과라고 생각합니다 그런데 afterUpdate 로그는 왜 나오질 않는지 궁금합니다 코드를 바꿔가며 테스트해봐도 afterUpdate는 계속 동작이 되질 않습니다

총 시간은 0분/0분으로 되어있고 각 강의마다 1분 미만으로 표시되고 있습니다.

디비연동은 다른 react 수업에 나오던데 그거 보면 되나요? 그리고 또 궁금 한게... 앱과 웹은 다른데 이 수업은 앱에 치중 되어 있잖아요... 그러면 이걸로만으로 부족 하겠지만 구글스토어에서 다운 받는 어플 같은거 만들 수 있게 하는게 이 수업인가요?

docker를 설치하고 docker run -it redis 를 실행 후 이런 에러가 뜹니다..ㅠ

안녕하세요 강사님 강의 잘보고 있습니다~ 15분경에 연관관계 메서드 작성하실때 의문점이 생겼는데요 지난시간에 Team과 Member가 있는 프로젝트에서는 연관관계의 주인 쪽에서 메서드를 작성할때 public void changeTeam(Team team) { this.team = team; team.getMembers().add(this);} 이렇게 하였고 연관관계의 주인이 아닌쪽(Team)에서 메서드를 작성하실 때는 이렇게 하셨습니다. public void addMembers(Member member) { member.setTeam(this); members.add(member);} 그래서 저는 어느 쪽에서 하든지 먼저 새로운 객체를 필드에 넣어주고 리스트에 객체를 추가하는 순서라고 이해를 하였는데요 그런데 이번시간에는 public void addOrderItems(OrderItem orderItem) { orderItems.add(orderItem); orderItem.setOrder(this);} 이렇게 다른 순서로 작성하셔서 메서드 작성 순서가 바뀌어도 상관이 없는 것인지 헷갈리네요.. 제가 혹시 이해하지 못하고 놓치고 있는게 있을까요?

자영업을 하고 있는데 블로그 만들어서 홍보할 생각입니다. 많은 기대가 됩니다. ^^ 메일은 qkrwjddyd@gmail.com 입니다.

════════ Exception caught by widgets library ═══════════════════════════════════════════════════════ The following FirebaseException was thrown building StreamBuilder<FirebaseUser>(state: _StreamBuilderBaseState<FirebaseUser, AsyncSnapshot<FirebaseUser>>#fe17e): [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp() The relevant error-causing widget was: StreamBuilder<FirebaseUser> file:///C:/Users/PC/AndroidStudioProjects/instagram_clone/lib/root_page.dart:10:12 When the exception was thrown, this was the stack: #0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:118:5) #1 Firebase.app (package:firebase_core/src/firebase.dart:52:41) #2 FirebaseAuth.instance (package:firebase_auth/src/firebase_auth.dart:37:47) #3 new _LoginPageState (package:instagram_clone/login_page.dart:14:43) #4 LoginPage.createState (package:instagram_clone/login_page.dart:9:36) ... ════════════════════════════════════════════════════════════════════════════════════════════════════

항상 강의 잘 보고 있습니다. 다름이 아니라 오류 해결 시도를 많이 해봤는데 잘 안 잡혀서 여쭤 봅니다 오류 코드 올려 드리겠습니다. HTTP 상태 500 – 내부 서버 오류 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:541) 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:373) 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.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Unknown Source) 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Unknown Source) 근본 원인 (root cause) org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginUserBean': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:337) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1287) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Unknown Source) 근본 원인 (root cause) org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginUserBean': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:368) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:276) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:454) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:543) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:513) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:653) org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:224) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:334) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1287) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Unknown Source) 근본 원인 (root cause) java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131) org.springframework.web.context.request.SessionScope.get(SessionScope.java:55) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:356) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:276) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:454) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:543) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:513) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:653) org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:224) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:334) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1287) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Unknown Source) 비고 근본 원인(root cause)의 풀 스택 트레이스를, 서버 로그들에서 확인할 수 있습니다. Apache Tomcat/9.0.36

배출구 스프라이트 slice한 후에 계층뷰에 올리고 애니메이션 폴더 만들어 애니 파일만 저장하면 자동으로 배출구 애니메이션이 만들어지는건가요? 아니면 따로 뭘 더 조정해 줘야 하나요? 수업 마지막에 다른 애니메이션을 만들 필요가 있을 때 다시 다룬다고 하셨는데 그때 알려주시는 방법대로 하면 배출구 애니메이션도 만들수 있는 거죠?