안녕하세요 깃 허브에 아래 처럼 폴더로 구분 해도 될런지요dev/user-service.yml stg/user-service.ymlprd/user-service.yml

이미지 리사이징 관련 정보를 찾다가, multer-s3-transform 모듈을 이용해서 아예 서버단에서 리사이징 하는 방법을 찾았는데,말씀대로 노드에서의 무거운 cpu작업을 피하기위해 외부 서비스(람다)를 이용하는게 정석인가요?

var의 문제점 강의 내용 중 '2.js'의 소스를 제공해준 코드 링크의 index.js의 상단에 있는 가이드 대로 2.js의 내용을 복사후 붙였는데 강의 내용와 다르게 ReferenceError i is not defined 문제가 발생됩니다. 그리고, 강의에는 온라인 tool(create sandbox) 하단에 콘솔(code)로 선택되어 보여지는데 사용방법도 안내 부탁드립니다.    

`` <-- 요거 안에서 자동완성 기능이 안되는데, 비주얼스튜디오 코드에서 작업중입니다. ``<-- 요것들 안에 있는내용은 스트링으로 됩니다. 방법이 있을까요?

안녕하세요 영상 보다보면 ConstraintLayout 안에서 ap::layout_constraint 속성 줄때 아래 namespace관련 코드가 자동으로 import되는데 설정을 혹시 어떻게 해야하나요? xmlns:app="http://schemas.android.com/apk/res-auto"

안녕하세요! 강의 잘 보고 있어요. 다름이 아니라 알리아스 하신 rnk에 관련하여 질문이 있어요. (ORDER BY start_date) rnk 와 (ORDER BY end_date) rnk가 알리아스 이름이 같던데 알리아스의 이름이 같아도 상관이 없는 건가요??   저는 참고로 알리아스 이름이 같으면 안되는 것 같아서, 각각 rn_1, rn_2로 이름을 구분시켜 놓았어요!  

네이버클라우드에 이미지 업로드하는 부분을 하지 않아도 웹 배포하기에 아무문제가 없을까요?

영한님 안녕하세요. 테스트 케이스 작성하실 때, 메서드 이름을 camel 케이스가 아니라 snake case로 작성하시던데, db 강의 때도 그렇게 하셔서 궁금했는데 뭔가 이유가 있으신 건가요?

- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. 알려주시는 중에 똑같이 따라 적고 저는 실행을 눌렀는데 out 부분에서 에러가 뜨면서 실행이 안됩니다. label "out" was referenced but not defined. 라고 적혀있네요. 뭐가 문제일까요....?

안녕하세요 강사님   1차분 강의자료.zip python_basic.zip 파일이 비어있다고 나오는데 수업자료 확인부탁드려도 될까요?

윈도 환경인데.. 아래의 오류가 계속납니다. ㅠㅠ 어떻게 하면 될까요?

저희가 소스를 작성한건 body인데 왜 head에 번역이 되어 들어가있나요 body에 들어가있어야 되는거 아닌가요?

assertThat(A).isEqualTo(B); assertEquals(A,B); 두가지 같은것이 맞나요?    

플레이어가 disconnected될 때 게임룸에서 Push를 하여 LeaveGame을 예약을 했었는데요.   현재 JobSerializer를 상속하는게 DbTransaction과 GameRoom 두 개가 있는데 쉽게 두 개의 쓰레드가 있다고 생각하면 되는지 모르겠습니다.   하나의 게임룸에서 일감이 - 플레이어A의 LeaveGame - 플레이어B의 전투 - 플레이어C의 전투 ... 이렇게 쌓여있을 때 플레이어A가 나갔을 때 현재 상태를 DB에 저장한다고 하면 I/O를 처리하는데 시간을 많이 잡아먹으면 플레이어B와 C의 전투 처리 코드가 지연이 되기 때문에, DbTransaction 쓰레드로 DB 일감을 Push하여 거의 같은 시각에 봤을 때 플레이어B의 전투와 플레이어A의 DB 갱신 로직이 처리될 수 있다고 이해했는데 이렇게 생각하면 될까요?   세 지점에 브레이크 포인트를 찍어서 쓰레드를 관찰해봤는데 위에서 차례대로 24132 -> 주쓰레드 -> 9440 이렇게 변화가 있었는데요. 전부 Push로 예약을 하는 입장에서 왜 DbTransaction에 Push한 일감만 주쓰레드에서 처리하는지도 궁금합니다.

GET 버튼을 누르고 consol을 확인하면 그림처럼 메시지가 나옵니다. 해결방법 부탁드립니다.

안녕하세요, 제로초님. 강좌 정말 잘 보고 있습니다. 감사합니다. (강좌 뒷부분 보다가 이 질문을 어디에 써야 할 지 몰라서 제일 앞 강의에 올립니다.) 개인 프로젝트로 만드는 웹 팬게임에 리액트를 적용해보려고 합니다. 그런데 앞부분이 인터랙티브 웹 페이지라 이 부분은 리액트를 적용할 수 없지 않나 싶더라구요. 화면 제어를 리액트에게 맡기지 않으니까요.. 그래서 인터랙티브 기술을 적용한 html 파일 여러 개와 리액트를 적용할 html 파일 하나를 만들어서 페이지 이동을 시키면 되지 않을까 하는데, 제가 맞게 이해한 건지 궁금합니다. 

class AccountCreateView(CreateView): model = User form_class = UserCreationForm success_url = reverse_lazy('appaccount:hello_world') template_name = 'appaccount/account_user.html' 오늘 진행한 강좌에서 help_text를 제거하려면 어떻게 해야할까요   찾아보니   class UserCreateForm(UserCreationForm):     email = forms.EmailField(required=True)     def __init__(self, *args, **kwargs):         super(UserCreateForm, self).__init__(*args, **kwargs)         for field_name in ('email', 'username', 'password1', 'password2'):             self.fields[field_name].help_text = ''   이렇게 클래스를 추가하기도 한다는데 어떻게 이용해야할지 잘 모르겠습니다

client 단에서 사용하기 위해 publicRuntimeConfig setting을 한다고 하셨는데, server 단과 client 단 둘다 동시에 적용하는 방법 중에,.env 파일 안에, NEXT_PUBLIC_ 을 붙이는 방법도 있는 것으로 알고 있습니다. 2개의 차이점이 있을까요?  감사합니다. 

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요   JPA 테스트 실행시 나타나는 오류입니다..... 원인을 잘 모르겠습니다 H2 켜놓은 상태입니다  Failed to load ApplicationContext java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8(ClassBasedTestDescriptor.java:363) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:368) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9(ClassBasedTestDescriptor.java:363) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:362) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:283) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:282) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:271) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:102) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:101) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:66) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at com.sun.proxy.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71) at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberController' defined in file [C:\study\hello-spring\build\classes\java\main\hello\hellospring\controller\MemberController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.repository.MemberRepository]: Factory method 'memberRepository' threw exception; nested exception is java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at app//org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) at app//org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at app//org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at app//org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at app//org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at app//org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at app//org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) at app//org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) at app//org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) at app//org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) at app//org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) at app//org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at app//org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:132) at app//org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) at app//org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ... 85 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.repository.MemberRepository]: Factory method 'memberRepository' threw exception; nested exception is java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at app//org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) at app//org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at app//org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at app//org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at app//org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at app//org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at app//org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at app//org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) at app//org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) at app//org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) at app//org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ... 103 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.repository.MemberRepository]: Factory method 'memberRepository' threw exception; nested exception is java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at app//org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ... 117 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository' defined in class path resource [hello/hellospring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.repository.MemberRepository]: Factory method 'memberRepository' threw exception; nested exception is java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at app//org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) at app//org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at app//org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at app//org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at app//org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at app//org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at app//org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:362) at app//org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334) at app//hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17.memberRepository(<generated>) at app//hello.hellospring.SpringConfig.memberService(SpringConfig.java:27) at app//hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17.CGLIB$memberService$0(<generated>) at app//hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17$$FastClassBySpringCGLIB$$c576d6fc.invoke(<generated>) at app//org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) at app//org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) at app//hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17.memberService(<generated>) at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base@11.0.15/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11.0.15/java.lang.reflect.Method.invoke(Method.java:566) at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 118 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [hello.hellospring.repository.MemberRepository]: Factory method 'memberRepository' threw exception; nested exception is java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at app//org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ... 141 more Caused by: java.lang.ClassCastException: class com.sun.proxy.$Proxy93 cannot be cast to class javax.sql.DataSource (com.sun.proxy.$Proxy93 is in unnamed module of loader 'app'; javax.sql.DataSource is in module java.sql of loader 'platform') at hello.hellospring.repository.JdbcMemberRepository.<init>(JdbcMemberRepository.java:17) at hello.hellospring.SpringConfig.memberRepository(SpringConfig.java:34) at hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17.CGLIB$memberRepository$1(<generated>) at hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17$$FastClassBySpringCGLIB$$c576d6fc.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) at hello.hellospring.SpringConfig$$EnhancerBySpringCGLIB$$5a22a17.memberRepository(<generated>) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 142 more .

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