안녕하세요. 프로토타이핑 단계와 디자인 시스템 단계가 구분되어 있는데, 혹시 두 단계가 정확히 어떻게 다른 건가요? 디자인 시스템 단계에서 정확히 어떤 일을 하는 건지 분명하지 않은 것 같습니다. 감사합니다.

안녕하세요 정수원 선생님 질문이 있습니다.httpSecurity .csrf().csrfTokenRepository(new HttpSessionCsrfTokenRepository()); 처럼 세션에 저장하는 경우에 응답으로 csrf token 관련 정보들이 response에 존재하지 않는데해당 경우에는 custom하게 필터를 만들어서 세션에 저장후 응답에 적절한 id(csrfJSessinID?) 를 넣어줘서나중에 검증할 수 있도록 해야하나요? client 입장에서는 어떻게 csrf token을 http 요청헤더에 넣을 수 있나요?

강의 감사합니다.Cacheable은 서버내에 저장이 되는것이지요?서버 이중화 되는 경우 캐쉬정보는 동기화는 가능 한가요?접속 때마다 다른 서버로 접속 되는 경우, 캐쉬 활용이 가능한가요?강의 정말 잘 들었고, 수고 하셨습니다.감사합니다.

function solution(s) { s = "gg"; return s; } const str = "gooG"; console.log(solution(str));예제를 하다가 보통 solution에게 매개변수로 넘겨주는 값이 let로 되어 있어서 const로 바꾸어 보았는데요 str은 const이고 solution 함수로 전달되어서 str값을 변경을 시켜주었는데 오류가 안나고 변경이 되더라구요 const는 상수이고 변할수 없는 값인데요 이런경우 어떻게 변할수가 있는거죠 ?

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]springJPA 테스트 중 아래와 같은 내용의 에러가 떴는데 해결 방법을 모르겠습니다.....java.lang.IllegalStateException: Failed to load ApplicationContextat org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:98)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$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springConfig' defined in file [C:\Users\JANE\Downloads\hello-spring\out\production\classes\hello\hellospring\SpringConfig.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll(); Reason: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:136)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:141)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:90)... 71 moreCaused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springDataJpaMemberRepository' defined in hello.hellospring.repository.SpringDataJpaMemberRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll(); Reason: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)... 89 moreCaused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll(); Reason: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:107)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(QueryExecutorMethodInterceptor.java:95)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)at java.base/java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1054)at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)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.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:97)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:87)at java.base/java.util.Optional.map(Optional.java:265)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:87)at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:365)at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323)at org.springframework.data.util.Lazy.getNullable(Lazy.java:231)at org.springframework.data.util.Lazy.get(Lazy.java:115)at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329)at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)... 100 moreCaused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.List hello.hellospring.repository.MemberRepository.findByAll()! No property 'all' found for type 'Member'at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:119)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:259)at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93)at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103)... 122 moreCaused by: org.springframework.data.mapping.PropertyReferenceException: No property 'all' found for type 'Member'at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91)at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438)at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414)at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367)at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330)at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349)at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332)at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81)at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)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.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:251)at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:384)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)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.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:385)at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:96)at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89)... 126 more  오타 난 건가 해서 복붙했는데도 같은 에러가 뜨고 있습니다 ...

안녕하세요 강의 잘 들었습니다 !!다름이 아니라 토큰 만료 시간을 엄청 길게(100000초) 했는데도자꾸 몇 분 만에 토큰이 만기(TokenExpiredException) 되었다고 해서 .....(프론트는Android studio랑 연동)뭔가 이상해서 혹시 이런 증상에 대해 해결책은 없는지 궁금합니다.

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)[질문 내용]강의 잘 듣고 있습니다.실습 진행중에 EOFException이 마지막에 계속 뜨는데 무시하고 진행하면 될까요?다른 수강생분께 답변 남기신 글 보고 따라해봤는데도 해결이 안되네요

package hello.core.member; import hello.core.AppConfig; import org.assertj.core.api.Assertions; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; public class MemberServiceTest { AppConfig appConfig = new AppConfig(); MemberService memberService = appConfig.memberService(); @BeforeEach public void beforeEach() { } @Test void join() { // given Member member = new Member(1L, "memberA", Grade.VIP); // when memberService.join(member); Member findMember = memberService.findMember(1L); //then Assertions.assertThat(member).isEqualTo(findMember); } }beforeEach에서 인스턴스 매번 안만들고 한번 만들어서 써도 되지 않나요?

쿠버네티스에서 디폴로이먼트로 .war 파일을 배포해서 실행 시키는데 파드 안에서 컨테이너를 실행 시켜 실행시키는걸로 알고 있는데 파드안에 도커 컨테이너가 실행시켜지는건가요? 아님 어떤 컨테이너가 실행되서 돌아가는건지 궁금합니다

go func() { for i := 0; i < 5; i++ { fmt.Println("check : ", i) ch <- true } close(ch) // 5회 채널에 값 전송 후 채널 닫기 }() for i := range ch { // 채널에서 값을 꺼내온다. 닫힐 때 까지 fmt.Println("ex1 : ", i) }코드출력check : 0check : 1ex1 : trueex1 : truecheck : 2check : 3ex1 : trueex1 : truecheck : 4ex1 : true 위 코드가 아래와 같이 출력됩니다. 왜 2개씩 출력이 되는 걸까요?.. 제 생각에는 check가 0부터 하나씩 출력이 되야 할 것 같은데.. ch := make(chan bool, 2) 이렇게 버퍼(?)를 추가해 주면 3개 3을 추가하면 4개씩 늘어나네요.기본이 2개씩 모아서 실행을 하고 추가되는 값 만큼 처리를 한다고 생각하면 될까요?+) 개인적으로 강사님 의견이 궁금한 부분인데요.restAPI를 Java-Spring 대신 Go로 짠다고 했을 때 비동기가 중요한 작업이라고 하면 Go가 더 괜찮은 선택이 될 수 있을까요?

학습을 하면서 웹(크롬)에서 다음와 같은 에러가 계속 나오는데 어떤의미이고, 해결방법은 궁금합니다

createRootElement가 static인 이유가 무엇인가요?

안녕하세요! 강의 잘 수강하고 있습니다. ApplicationContext 통해서 객체 추출하면 컴파일 타임에서 오류를 찾기 어려운 단점이 있는 것 같아서, 정말 단점이 맞는지 확인하고 싶어서 질문드립니다.Spring을 적용하기 전 AppConfig를 직접 사용하던 경우에는 method 호출로 객체를 생성하기 때문에 method 이름이 변경된다면 컴파일 에러로 발견할 수 있습니다.그런데 AnnotationConfigApplicationContext을 사용하고 나서는 등록된 Bean을 이름으로 검색해서 찾아오기 때문에 런타임 에러가 발생할 가능성이 생깁니다.만약 제가 AppConfig 내의 method 이름을 변경하면 아래 코드는 에러를 만들게 됩니다.ApplicationContext applicationContext = new AnnotationConfigApplicationContext(AppConfig.class); MemberService memberService = applicationContext.getBean("memberService", MemberService.class);@Configuration public class AppConfig { @Bean public MemberService emberService() { // 오타 발생 return new MemberServiceImpl(memberRepository()); } }이렇게 되면 정적 타입 언어의 장점을 상쇄시키는게 아닌지 의문이 들었습니다. 그리고 서버 운영중에 Bean을 찾지 못해서 장애가 발생하는 경우는 없는지도 궁금합니다! 제가 뭔가 이해를 잘못했거나 내용을 놓쳤을 수도 있을 것 같습니다. 답변 기다리겠습니다 🙏

안녕하세요 훌륭한 강의를 잘 듣고있는 학생입니다.다름이 아니라 제가 oauth로그인을 하면 오류가 발생하여 문의드립니다.우선 저는 jdk11과 Gradle을 사용하고있습니다.위와 같이 잘 작동하다가 아래와 같이 oauth로그인을 사용하면 에러가 발생합니다.Parameter 0 of method setFilterChains in org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration required a bean of type 'org.springframework.security.oauth2.client.registration.ClientRegistrationRepository' that could not be found.에러의 총 내용은 위와 같습니다.그래서 다른 질문들의 답변을 보니 라이브러리의 충돌 및 다운로드의 문제인거 같아 intelliJ에서 제공하는 invalidate cache기능을 사용하여 다시 재빌드를 하였지만 같은 에러가 발생하고 .\gradlew --refresh-dependencies를 사용하여 재빌드 또한 진행하였지만 같은 결과가 나왔습니다. 마지막으로 toolbox 및 인텔리제이를 다시 실행해도 같은 현상이 발생합니다. 혹시 방법을 알 수 있을까요??

<template> <div> <div class="container"> <div class="main-panel"> <img class="product-image" :src="product.imageUrl" :alt="product.name" /> </div> <div class="side-panel"> <p class="name">{{ product.name }}</p> <p class="price">{{ product.price }}</p> <button type="button" @click="addToCart">Add to Cart</button> </div> </div> </div> </template> <script> import {fetchProductById} from '@/api/index' export default { async asyncData({ params }) { const response = await fetchProductById(params.id); const product = response.data return{ product } }, methods: { addToCart() { this.$store.commit('addCartItem',this.product); this.$router.push('/cart') console.log("hi success") } } } </script> <style scoped> .container { display: flex; justify-content: center; margin: 2rem 0; } .product-image { width: 500px; height: 375px; } .side-panel { display: flex; flex-direction: column; justify-content: center; width: 220px; text-align: center; padding: 0 1rem; } </style>export const state= () => ({ cartItems: [''], }) export const mutations = { addCartItem(state, cartItem) { state.cartItems.push(cartItem) }, }코드를 다음과 같이 작성했는데 강의처럼 addCartItem이 안나옵니다.

 강의 자료 다운이 안돼서 hanwool0614@naver.com으로 보내주시면 감사하겠습니다!😁

from selenium import webdriver driver = webdriver.Chrome("./chromedriver") 이렇게 치면 화면이 잠깐 떳다가 바로 중단되서 사라지는데 실행 중단을 막을수 없을까요?

웹스톰 ES lint " 양 따옴표로 자동 만들어지는 오류 문제 해결 법 문의드려요 /import 부분이 자동으로 만들어지면서 "" 양따옴표로 만들어지면서 빨간줄 오류가 뜨는데, 이거 양따옴표 말고 홀따옴표로 설정 바꿀 수 있는 방법 있을까요?@Injectable() 만들었더니 자동으로 임포트 되면서 from 이후에 양따옴표로 만들어지네요구글링 하거나 웹스톰에서 설정 찾아봐도 어떻게 바꿔야 될지 몰라서 문의드려봅니다.

강의 내용처럼 dependency를 추가하려고 spring-boot-starter-data-jpa를 입력했는데 빨간 글씨로 나타나네요마우스 커서를 올려보니 종속성 'org.springframework.boot:spring-boot-starter-data-jpa:2.7.7을(를) 찾을수 없습니다' 이렇게 뜹니다구글링을 해봤지만 이 부분에 대한 해답을 찾기 어려워 질문 드립니다

프로젝트 설정을 다 하고 시뮬레이터를 시작해보려하는데아래와 같은 에러가 나네요 ㅠㅠㅠ+ 구글링하다가 Podfile.lock 파일 삭제하고 돌려보라해서 했다가 Running pod install... 상태로 멈춰있네요... 살려주세요....