안녕하세요 영한님. 복습 도중 에러가 발생하는 부분에 대해 의문이 생겨 질문 남깁니다. @MainDiscountPolicy 를 RateDiscountPolicy.java와 OrderServiceImpl에서 제거하면  해당 테스트 수행 시 NoUniqueBeanDefinitionException이 뜹니다. @Qualifier가 없어도 같은 타입의 빈이면 모두 맵과 리스트에 담기는 것이 이번 강의의 포인트라고 생각되는데.. 꼭 @MainDiscountPolicy가 필요하다면 같은 타입의 빈을 조회하는 아이디어가 제대로 작동하지 않는 것 아닌가요? 코드첨부 1. MainDiscountPolicy를 삭제하기 전 - 테스트 모두 통과 package hello.core2.order;import hello.core2.annotation.MainDiscountPolicy;import hello.core2.member.Grade;import hello.core2.member.Member;import org.springframework.stereotype.Component;@Component@MainDiscountPolicypublic class RateDiscountPolicy implements DiscountPolicy { private int discountPercent = 10; @Override public int discount(Member member, int price) { if (member.getGrade() == Grade.VIP) { return price * discountPercent / 100; } else { return 0; } }} package hello.core2.order;import hello.core2.annotation.MainDiscountPolicy;import hello.core2.member.Member;import hello.core2.member.MemberRepository;import lombok.RequiredArgsConstructor;import org.springframework.stereotype.Component;@Component//@RequiredArgsConstructorpublic class OrderServiceImpl implements OrderService{ private final MemberRepository memberRepository; private final DiscountPolicy discountPolicy; // 테스트용도 public MemberRepository getMemberRepository() { return memberRepository; } public OrderServiceImpl(MemberRepository memberRepository, @MainDiscountPolicy DiscountPolicy discountPolicy) { this.memberRepository = memberRepository; this.discountPolicy = discountPolicy; } @Override public Order createOrder(Long memberId, String itemName, int itemPrice) { Member member = memberRepository.findById(memberId); int discountPrice = discountPolicy.discount(member, itemPrice); return new Order(memberId, itemName, itemPrice, discountPrice); }} 코드첨부 2. MainDiscountPolicy를 삭제한 후 - 에러 발생 package hello.core2.order;import hello.core2.annotation.MainDiscountPolicy;import hello.core2.member.Grade;import hello.core2.member.Member;import org.springframework.stereotype.Component;@Component//@MainDiscountPolicypublic class RateDiscountPolicy implements DiscountPolicy { private int discountPercent = 10; @Override public int discount(Member member, int price) { if (member.getGrade() == Grade.VIP) { return price * discountPercent / 100; } else { return 0; } }} package hello.core2.order;import hello.core2.annotation.MainDiscountPolicy;import hello.core2.member.Member;import hello.core2.member.MemberRepository;import lombok.RequiredArgsConstructor;import org.springframework.stereotype.Component;@Component//@RequiredArgsConstructorpublic class OrderServiceImpl implements OrderService{ private final MemberRepository memberRepository; private final DiscountPolicy discountPolicy; // 테스트용도 public MemberRepository getMemberRepository() { return memberRepository; } public OrderServiceImpl(MemberRepository memberRepository, /*@MainDiscountPolicy*/ DiscountPolicy discountPolicy) { this.memberRepository = memberRepository; this.discountPolicy = discountPolicy; } @Override public Order createOrder(Long memberId, String itemName, int itemPrice) { Member member = memberRepository.findById(memberId); int discountPrice = discountPolicy.discount(member, itemPrice); return new Order(memberId, itemName, itemPrice, discountPrice); }} 에러내용 org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderServiceImpl' defined in file [C:\study\core2\out\production\classes\hello\core2\order\OrderServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'hello.core2.order.DiscountPolicy' available: expected single matching bean but found 2: fixDiscountPolicy,rateDiscountPolicy at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:799) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:228) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1361) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1208) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:89) at hello.core2.autowired.AllBeanTest.findAllBean(AllBeanTest.java:21) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:208) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53) Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'hello.core2.order.DiscountPolicy' available: expected single matching bean but found 2: fixDiscountPolicy,rateDiscountPolicy at org.springframework.beans.factory.config.DependencyDescriptor.resolveNotUnique(DependencyDescriptor.java:220) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1285) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:886) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:790) ... 77 more

몇 가지 정리해서 말씀드리겠습니다. 1. creapple에서 제공하는 digits_model.h5파일은 무조건 0만 나오도록 가중치가 설정되어있습니다. 확인부탁드립니다. 실제로 357예제와 노트북 캠 예제 파이카메라 예제에서 모두 동일한 현상 나타납니다. 2. RBP_DL11_MNIST에서 만들어지는 digits_model.h5는 357예제와 노트북캠예제에서 정상적으로 작동합니다. 하지만 이 파일을 파이카메라 예제로 가져오면  KeyError: 'sample_weight_mode' 에러가 발생합니다. 자세한 로그는 필요하시면 올리겠습니다. ---------------------------------------------- digits_model.h5파일 확인 부탁드립니다. 유익한 강의 항상 감사하게 듣고있습니다 화이팅

1강에 랜더 샘플 주전자 데이터 파일이 없습니다.

기업회원으로 수강신청을 했는데.. 업무로 바빠서 수강기간 내에 수강을 완료하지 못해 개인돈으로 수강료을 모두 지불했습니다.개인적으로 여유있게 차근차근 다시 들으려 했는데 수강창이 사라졌습니다....ㅠㅠㅠ 더이상 수강을 할 수 없는 것인가요? 

16진수에서 0에서 9 그리고 10부터는 알파벳으로 쓴다고 나오는데 숫자를 0부터 세니까  0x0f = 16 0x10 = 17 이지 않나요? 제가 잘못 이해하고 있는거라면 죄송합니다

안녕하세요 수업 중 질문 있습니다. 해커랭크의 Revising Aggregations - The Count Function 이 문제를 풀다가 막혔는데요 SELECT COUNT(*) FROM city WHERE population >= 100000 저는 SELECT부분에서 계속 틀렸는데 SELECT COUNT (city)라고 작성하였습니다 근데 수업중 SELECT COUNT(*) 혹은 SELECT COUNT(id) 라고 작성하면 된다고 하셨는데 왜 괄호안에 * 또는 id가 오는지 모르겠습니다 그리고 해커랭크 문제 풀면서 계속 궁금한 부분이 있었는데요 문제 풀 때마다 테이블이 계속 등장하는데 저는 그 테이블 안보고 영어로 나온 문제만 읽고 푸는데요 그 표를 어떻게 해석해야 할지 , 문제와 어떻게 연관이 있는건지 잘 모르겠습니다...

처음 설치하면서 계정 생성하고 암호 입력하면 자동으로 db  생성 되지 않나요 ?  계정 ,비번 문제도 아닌거 같고, 폰트가 깨지는 거 보니  인코딩 문제일 수도  있겠는데  ...? 검색해도 안나오네요 ㅠ  Postgres는  최신형입니다. -------------------------------------------------------- org.postgresql.util.PSQLException: Ä¡¸íÀû¿À·ù: "springboot" µ¥ÀÌÅͺ£À̽º ¾øÀ½ (pgjdbc: autodetected server-encoding to be ISO-8859-1, if the message is not readable, please check database logs and/or host, port, dbname, user, password, pg_hba.conf) at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2497) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.core.v3.QueryExecutorImpl.readStartupMessages(QueryExecutorImpl.java:2618) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.core.v3.QueryExecutorImpl.<init>(QueryExecutorImpl.java:135) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:250) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.Driver.makeConnection(Driver.java:458) ~[postgresql-42.2.8.jar:42.2.8] at org.postgresql.Driver.connect(Driver.java:260) ~[postgresql-42.2.8.jar:42.2.8] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:353) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.1.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.1.jar:na]

안녕하세요 css를 static에 복사 붙여넣기 한 후 css 내용을 수정 후 저장 했는데 수정된 내용이 적용이 안됩니다. 장고에 원본 css 파일이 캐시파일 형태로 들어 가 있어서 css파일을 삭제 해도 대신 캐시파일때문에 깨지지 않는 것인가요?

제가 coponents를 생성해서 연결할려고 하는데 이렇게 작성을 했는데 터미널로 실행시킬때마다 밑에와 같이 변환이 자동으로 됩니다. 왜이러는 건지 궁금합니다.

넌적스에서 for문을 사용해서 게시글을 받아와 리스트 형식으로 출력하려고 하는데  for 문을 어떤식으로 써야할지 모르겠습니다 Help me plz ㅠㅠ

@Validated 는 @Requestparam 검증 에 쓰고 @Valid 는 Dto 에 쓰는 것 같은데 이렇게 하는 이유가 있나요? 반대로 하거나 둘 다 @Valid 혹은 @Validated로 하면 안되는건지 궁금합니다 그리고 스프링부트에 @Validated @Valid 예제가 많던데 그냥 스프링에 똑같이 적용해도 문제가 없는지 알고 싶습니다 감사합니다

삭제된 글입니다

좋은 강의 항상 감사드립니다! 다름이 아니라 yml이나 강사님과 똑같이 코딩을 하였고 데이터베이스도 연결이 되있는게 확실한데 어떤 부분에서 오류가 났을지 알고 싶습니다! plugins { id 'org.springframework.boot' version '2.4.6' id 'io.spring.dependency-management' version '1.0.11.RELEASE' id 'java'}group = 'jpabook'version = '0.0.1-SNAPSHOT'sourceCompatibility = '11'configurations { compileOnly { extendsFrom annotationProcessor }}repositories { mavenCentral()}dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation 'org.springframework.boot:spring-boot-starter-thymeleaf' implementation 'org.springframework.boot:spring-boot-starter-validation' implementation 'org.springframework.boot:spring-boot-starter-web' //html 파일을 컴파일만 해주면 서버 재시작 없이 View 파일이 변경이 가능. implementation 'org.springframework.boot:spring-boot-devtools' compileOnly 'org.projectlombok:lombok' runtimeOnly 'com.h2database:h2' annotationProcessor 'org.projectlombok:lombok' testImplementation 'org.springframework.boot:spring-boot-starter-test' //JUnit4 추가 testImplementation("org.junit.vintage:junit-vintage-engine") { exclude group: "org.hamcrest", module: "hamcrest-core" }}test { useJUnitPlatform()} <build.gradle>도 이렇게 했습니다!  아래부터는 오류가 뜬 부분입니다! 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:244) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at org.junit.runners.ParentRunner.run(ParentRunner.java:413) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at org.junit.runner.JUnitCore.run(JUnitCore.java:115) at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:43) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$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.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:82) at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:73) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$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.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:133) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164) at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$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.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:771) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:763) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:438) at org.springframework.boot.SpringApplication.run(SpringApplication.java:339) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:123) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ... 71 more Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ... 87 more Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ... 104 more

./gradlew clean build 해보면 계속 오류날겁니다. build.gradle 에 가서 id 'org.siouan.frontend-jdk11' version '5.2.0'id "org.siouan.frontend" version "3.0.2" 추가해주시구요 frontend { nodeDistributionProvided = false nodeInstallDirectory = file("${projectDir}/src/main/resources/static/node") packageJsonDirectory = file("${projectDir}/src/main/resources/static") nodeVersion = '16.0.0' assembleScript = 'run build' cleanScript = 'run clean' checkScript = 'run check'} 다른 게시글 있는것 처럼 설정해주시면 됩니다.  단, nodeVersion 을 16.0.0 이상으로 해주셔야 할겁니다. 이전 버전들은 executino Exception 이 발생하구요. 16.0.0으로 맞춰주니 잘되네요. 그리고 package.json 파일에 scripts 항목에 꼭 이걸로 바꿔주세요. "scripts": { "build": "echo Building frontend", "check": "echo Checking frontend && npm run lint && npm run test", "clean": "echo Cleaning frontend", "lint": "echo Linting frontend", "test": "echo Testing frontend"} 이거때문에 2시간 날렸습니다. 다른분들은 저같은 일 없으시길 바랍니다 ㅠㅠ

Rest 에 대한 개념에 어려움을 겪습니다 간단하게는 url 로 접속하는 api다라고 생각하는게 맞을까요 url로 접속하지 않는 api도 있을 까요

안녕하세요? 강의 25분 10초 쯤의 내용에서 질문 있습니다. sizeof(int)는 4byte이고 거기에 +1을 하니까 float arr4[sizeof(int)+1] == float arr4[5] 두 표현이 같은 의미라고 하셨는데 sizeof(int)는 4바이트이고 float 자료형의 배열의 한 칸(+1을 한 칸 추가로 본다면)도 4바이트 취급을 한다면 5가 아니라 8이 되어야 할 것 같은데 왜 단위가 같지 않음에도 5가 되는지 궁금합니다.

위에서처럼 !kaggle datasets files -d 코드가 계속 특정 dataset을 명시하라는 오류를 내뱉는데 왜 이러는걸까요? 구글에서 검색해봐도 아예 !kaggle datasets files -d 코드를 쓴 사례나 문서가 전혀 보이지 않아 애를 먹고 있습니다...부분 일치 검색결과도 전혀 없네요. 17년에 촬영된 오래된 동영상이라 혹시 저 코드가 이제는 안 쓰이는 건가요?

저는 prettier 쓰는데 저장시 자동정렬시키거든요.. 강사님처럼 띄어쓰기(?) 한번으로 자동정렬 어떻게 하나요..?

이 강의에서 제작한 포트폴리오를 그대로 취업할때 제출해도 괜찮을까요 대신 디자인은 제가 한게 아니라고 적어두긴 할건데 그래도 상관은 없겠죠? 물론 이외에 3개 포트폴리오가 더 있는데 3개는 너무 적은것같아서 이 강의에서 제작한 포트폴리오를 추가하려고 합니다

현재 강사님이 알려주신대로 polaris -dashboard다운로드하고 Loadbalancer로 진행하려고하는데요(metalib-system도 이미 설치된상태) expose를 LoadBalancer로 진행했는데 external IP 가 안나와서 yaml파일을 만들어서 진행했습니다. 이렇게하면 external IP는 나오는데 192.168.1.11:8080으로 해도 접속이안되네요.. 제가만든 yaml파일이 잘못되었을까요?? [root@m-k8s ~]# cat go.yaml apiVersion: v1 kind: Service metadata: labels: app: polaris-dashboard name: polaris namespace: polaris spec: type: LoadBalancer ports: - protocol: TCP port: 8080 targetPort: 80 externalIPs: - 192.168.1.11 selector: app: polaris-dashboard [root@m-k8s ~]# k get -n polaris svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE polaris LoadBalancer 10.103.134.128 192.168.1.11 8080:30620/TCP 3m polaris-dashboard ClusterIP 10.106.219.11 <none> 80/TCP 4m58s