For Each 시트시, 시트라는 변수를 선언 해주지않았는데 시스템에서 인식을 하는 이유가 있나요?   기본적으로 시트라는 것이 엑셀파일에 포함이 되어있는건지 아니면 저희에게는 보이지 않지만 미리 선언이 되어있는건지 알고싶습니다

// 화이트 리스트의 경우 인증 체크private boolean isLoginCheckPath(String requestURI) { return !PatternMatchUtils.simpleMatch(whiteList, requestURI);} 이 부분에서 왜 그냥 리턴하지 않고 !를 붙여서 반대값을 리턴하는지 잘 이해가 되질 않네요   답변 부탁드립니다.

@app.route('/json_test') def hello_json():     data = {'name' : '김대리', 'family' : 'Byun'}     return jsonify(data) 실행후  {"family":"Byun","name":"\uae40\ub300\ub9ac"} 출력됩니다. 사전의 키 name과 family 순서가 바뀌고 name의 한글이 깨지는데.. 원인과 해결 방법을 설명 부탁드립니다. 참고로 /server_info는 아래 처럼 잘 실행 됩니다.  {"server_name":"0.0.0.0","server_port":"8081"}

안녕하세요 로드맵 강의를 듣고 있는 학생입니다.   slack 요청을 보내드렸는데, 확인하시면 승인 좀 부탁드리겠습니다.   항상 좋은 강의 감사합니다!

TCP는 데이터 경계가 없어 부분적으로 오는 경우를 고려해준다고 설명해주셨는데  그 외적으로 패킷 분실,  패킷 손상,  도착 순서 등등은  TCP에서 보장해주기 때문에 서버코어단을 만들때 고려해주지 않아도 되는 게  맞을까요?? 

  큰 기업이라면 sql 서버에 지속적으로 데이터를 요청하는것보다 그냥 c나 c++로 custom db를 사내에 만들어서 관리하는것이 (기능은 더 적더라도) 노력은 들지만 한번 만들어 놓으면 더 빠르고 관리하기 편할 것 같다는 생각이 드는데  실제 현업에서 이러한 사례가 있는지, 없다면 이유가 있나요? (그냥 구현하기가 그만큼 어려워서인가요?) 자체적으로 게임엔진을 만드는 회사들도 있는데 자체 db를 만드는 회사는 없나 갑자기 궁금해져서 여쭤봅니다.  

> Task :compileJava UP-TO-DATE > Task :processResources UP-TO-DATE > Task :classes UP-TO-DATE > Task :compileTestJava > Task :processTestResources NO-SOURCE > Task :testClasses > Task :test 20:26:51.469 [Test worker] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating CacheAwareContextLoaderDelegate from class [org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate] 20:26:51.489 [Test worker] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating BootstrapContext using constructor [public org.springframework.test.context.support.DefaultBootstrapContext(java.lang.Class,org.springframework.test.context.CacheAwareContextLoaderDelegate)] 20:26:51.548 [Test worker] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating TestContextBootstrapper for test class [hello1.hellospring1.service.MemberServiceIntegrationTest] from class [org.springframework.boot.test.context.SpringBootTestContextBootstrapper] 20:26:51.562 [Test worker] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [hello1.hellospring1.service.MemberServiceIntegrationTest], using SpringBootContextLoader 20:26:51.568 [Test worker] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [hello1.hellospring1.service.MemberServiceIntegrationTest]: class path resource [hello1/hellospring1/service/MemberServiceIntegrationTest-context.xml] does not exist 20:26:51.568 [Test worker] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [hello1.hellospring1.service.MemberServiceIntegrationTest]: class path resource [hello1/hellospring1/service/MemberServiceIntegrationTestContext.groovy] does not exist 20:26:51.568 [Test worker] INFO org.springframework.test.context.support.AbstractContextLoader - Could not detect default resource locations for test class [hello1.hellospring1.service.MemberServiceIntegrationTest]: no resource found for suffixes {-context.xml, Context.groovy}. 20:26:51.569 [Test worker] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [hello1.hellospring1.service.MemberServiceIntegrationTest]: MemberServiceIntegrationTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration. 20:26:51.628 [Test worker] DEBUG org.springframework.test.context.support.ActiveProfilesUtils - Could not find an 'annotation declaring class' for annotation type [org.springframework.test.context.ActiveProfiles] and class [hello1.hellospring1.service.MemberServiceIntegrationTest] 20:26:51.731 [Test worker] DEBUG org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider - Identified candidate component class: file [C:\Users\tjd57\study\hello-spring1\build\classes\java\main\hello1\hellospring1\HelloSpring1Application.class] 20:26:51.737 [Test worker] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Found @SpringBootConfiguration hello1.hellospring1.HelloSpring1Application for test class hello1.hellospring1.service.MemberServiceIntegrationTest 20:26:51.853 [Test worker] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - @TestExecutionListeners is not present for class [hello1.hellospring1.service.MemberServiceIntegrationTest]: using defaults. 20:26:51.854 [Test worker] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListener, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListener, org.springframework.boot.test.autoconfigure.webservices.client.MockWebServiceServerTestExecutionListener, org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener, org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.event.ApplicationEventsTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener, org.springframework.test.context.event.EventPublishingTestExecutionListener] 20:26:51.869 [Test worker] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListener@5bf22f18, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@267f474e, org.springframework.test.context.event.ApplicationEventsTestExecutionListener@7a7471ce, org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener@28276e50, org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener@62e70ea3, org.springframework.test.context.support.DirtiesContextTestExecutionListener@3efe7086, org.springframework.test.context.transaction.TransactionalTestExecutionListener@675d8c96, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@741b3bc3, org.springframework.test.context.event.EventPublishingTestExecutionListener@2ed3b1f5, org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListener@63648ee9, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListener@68d6972f, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListener@45be7cd5, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListener@7651218e, org.springframework.boot.test.autoconfigure.webservices.client.MockWebServiceServerTestExecutionListener@3185fa6b, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener@6d366c9b] 20:26:51.874 [Test worker] DEBUG org.springframework.test.context.support.AbstractDirtiesContextTestExecutionListener - Before test class: context [DefaultTestContext@d5ae57e testClass = MemberServiceIntegrationTest, testInstance = [null], testMethod = [null], testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@68759011 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello1.hellospring1.HelloSpring1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@1921ad94, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@53fd0d10, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@1fde5d22, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@16ce702d, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2f1de2d6, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@29d89d5d], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true]], class annotated with @DirtiesContext [false] with mode [null]. . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.6.6) 2022-05-01 20:26:52.231 INFO 17296 --- [ Test worker] h.h.s.MemberServiceIntegrationTest : Starting MemberServiceIntegrationTest using Java 17.0.1 on LAPTOP-LEVUU8B0 with PID 17296 (started by tjd57 in C:\Users\tjd57\study\hello-spring1) 2022-05-01 20:26:52.233 INFO 17296 --- [ Test worker] h.h.s.MemberServiceIntegrationTest : No active profile set, falling back to 1 default profile: "default" 2022-05-01 20:26:53.722 INFO 17296 --- [ Test worker] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page: class path resource [static/index.html] 2022-05-01 20:26:54.073 INFO 17296 --- [ Test worker] h.h.s.MemberServiceIntegrationTest : Started MemberServiceIntegrationTest in 2.157 seconds (JVM running for 4.025) 2022-05-01 20:26:54.113 INFO 17296 --- [ Test worker] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... 2022-05-01 20:26:54.174 INFO 17296 --- [ Test worker] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed. 2022-05-01 20:26:54.180 INFO 17296 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Began transaction (1) for test context [DefaultTestContext@d5ae57e testClass = MemberServiceIntegrationTest, testInstance = hello1.hellospring1.service.MemberServiceIntegrationTest@5f8a02cf, testMethod = 중복_회원_예외@MemberServiceIntegrationTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@68759011 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello1.hellospring1.HelloSpring1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@1921ad94, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@53fd0d10, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@1fde5d22, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@16ce702d, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2f1de2d6, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@29d89d5d], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]]; transaction manager [org.springframework.jdbc.support.JdbcTransactionManager@26d5a317]; rollback [true] 2022-05-01 20:26:54.917 INFO 17296 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Rolled back transaction for test: [DefaultTestContext@d5ae57e testClass = MemberServiceIntegrationTest, testInstance = hello1.hellospring1.service.MemberServiceIntegrationTest@5f8a02cf, testMethod = 중복_회원_예외@MemberServiceIntegrationTest, testException = org.opentest4j.AssertionFailedError: expected: "이미 존재하는 회원입니다." but was: "이미 존재하는 회원입니다. ", mergedContextConfiguration = [WebMergedContextConfiguration@68759011 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello1.hellospring1.HelloSpring1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@1921ad94, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@53fd0d10, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@1fde5d22, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@16ce702d, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2f1de2d6, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@29d89d5d], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]] expected: "이미 존재하는 회원입니다." but was: "이미 존재하는 회원입니다. " org.opentest4j.AssertionFailedError: expected: "이미 존재하는 회원입니다." but was: "이미 존재하는 회원입니다. " at java.base@17.0.1/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base@17.0.1/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) at java.base@17.0.1/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base@17.0.1/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) at app//hello1.hellospring1.service.MemberServiceIntegrationTest.중복_회원_예외(MemberServiceIntegrationTest.java:53) at java.base@17.0.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base@17.0.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@17.0.1/java.lang.reflect.Method.invoke(Method.java:568) at app//org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725) at app//org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at app//org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at app//org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at app//org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at app//org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at app//org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base@17.0.1/java.util.ArrayList.forEach(ArrayList.java:1511) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base@17.0.1/java.util.ArrayList.forEach(ArrayList.java:1511) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$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$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61) at java.base@17.0.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base@17.0.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@17.0.1/java.lang.reflect.Method.invoke(Method.java:568) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) 2022-05-01 20:26:54.928 INFO 17296 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Began transaction (1) for test context [DefaultTestContext@d5ae57e testClass = MemberServiceIntegrationTest, testInstance = hello1.hellospring1.service.MemberServiceIntegrationTest@5e51ec2e, testMethod = 회원가입@MemberServiceIntegrationTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@68759011 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello1.hellospring1.HelloSpring1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@1921ad94, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@53fd0d10, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@1fde5d22, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@16ce702d, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2f1de2d6, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@29d89d5d], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]]; transaction manager [org.springframework.jdbc.support.JdbcTransactionManager@26d5a317]; rollback [true] 2022-05-01 20:26:54.953 INFO 17296 --- [ Test worker] o.s.t.c.transaction.TransactionContext : Rolled back transaction for test: [DefaultTestContext@d5ae57e testClass = MemberServiceIntegrationTest, testInstance = hello1.hellospring1.service.MemberServiceIntegrationTest@5e51ec2e, testMethod = 회원가입@MemberServiceIntegrationTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@68759011 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello1.hellospring1.HelloSpring1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@1921ad94, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@53fd0d10, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@1fde5d22, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@16ce702d, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2f1de2d6, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@29d89d5d], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]] MemberServiceIntegrationTest > �ߺ�_ȸ��_����() FAILED org.opentest4j.AssertionFailedError at MemberServiceIntegrationTest.java:53 2022-05-01 20:26:54.989 INFO 17296 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2022-05-01 20:26:55.004 INFO 17296 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. 2 tests completed, 1 failed > Task :test FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':test'. > There were failing tests. See the report at: file:///C:/Users/tjd57/study/hello-spring1/build/reports/tests/test/index.html * Try: > Run with --stacktrace option to get the stack trace. > Run with --info or --debug option to get more log output. > Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 6s 4 actionable tasks: 2 executed, 2 up-to-date [질문 내용]이미 존재하는 회원이라는 오류가 뜨고있습니다 , 어떻게 해결해야 좋을까요??

에러로그   sudo vi /etc/nginx/nginx.conf    sudo vi /etc/nginx/sites-enabled/default    서버를 구동하고 AWS Public IP로 접속하려고 해도 접속이 안됩니다 ,,, 어떻게 해야할까요  

문제 1, 2, 3 은 교수님이 풀어주신 예제의 변형 문제입니다. 교수님의 예제 출력값 1   1  2   1  2  3   1  2  3  4   1  2  3  4  5  ----------------------------------------------------------------------------------------------------------------------------- 1. 원하는 출력값 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1   #include <iostream> using namespace std; int main() { int outer_count = 5; while(outer_count >= 0) { int inner_count = 1; while(outer_count >= inner_count) { cout << inner_count++ << " "; } cout << endl; --outer_count; }   return 0; } ----------------------------------------------------------------------------------------------------------------------------- 2. 원하는 출력값 5 4 3 2 1 5 4 3 2 5 4 3 5 4 5   #include <iostream> using namespace std; int main() { int outer = 1; while(outer <= 5) { int inner = 5; while(outer <= inner) { cout << inner << " "; --inner; }   cout << endl; ++outer; } return 0; } ----------------------------------------------------------------------------------------------------------------------------- 3. 원하는 출력값 1 2 3 4 5 X 1 2 3 4 X 1 2 3 X 1 2 X 1 X   #include <iostream> using namespace std; int main() { int outer = 5;   while(outer >= 0) { int inner = 1;   while(outer >= inner) { cout << inner << " "; inner++; if(outer < inner) cout << "X"; } cout << endl; outer--; } return 0; } ----------------------------------------------------------------------------------------------------------------------------- 4. 구구단 프로그램   #include <iostream> using namespace std; int main() { int x; cin >> x; int y = 1;   while(y <= 9) { cout << x << "*" << y << "=" << x*y << endl; y++; } return 0; }    

Build 하고 아래 경고가 나옵니다. 무시해되 되는지요? Warning: Unable to find player assembly: C:\Unity\EntityComponentSystemSamples\ECSSamples\Temp\StagingArea\Data\Managed\UnityEngine.TestRunner.dll

에러로그       sudo vi /etc/nginx/nginx.conf    sudo vi /etc/nginx/sites-enabled/default  서버를 구동하고 AWS Public IP로 접속하려고 해도 접속이 안됩니다 ,,, 어떻게 해야할까요

안녕하세요. 저는 아래와 같이 쿼리를 짜보았는데요.   SELECT DISTINCT(CITY)FROM STATIONWHERE city NOT LIKE '[AEIOU]%' OR city NOT LIKE '%[AEIOU]';   해커랭크에서도 위의 쿼리는 Wrong Answer로 나오기는 하지만 아웃풋 자체는 정답과 같은 거 같은데 - 이 쿼리 방법은 틀린 걸까요?    

유니티 버전을 2021.3.1f1 (lts) 를 사용해도 되는지요?

B tree index의 이해 강좌 마지막 부분 ppt에서 ROWID가 ACER인 ROW가 복수개의 데이터 파일에 존재합니다. ROWID는 유니크한 것으로 알고 있었는데, 실제로 저런 케이스가 존재 가능한가요??

수업자료와 수업노트 다운로드 어디서 하나요?

강사님 안녕하세요? 강의 정말 잘 듣고 많은 것을 배웠습니다. 현재 저는 ASIC 계열에서 프론트엔드 업무를 하고 있습니다.  synthesis 부터 sta, ec 등 작업을 하던 중 설계에 관해서 많은 관심이 생겼습니다.   막연하게 설계를 해보고싶다! 이런 것은 아니고 rtl이 주로 system verilog로 되어서 받는데, 혼자서 해석하기가 난해하더군요.. 그래서 system verilog 문법이나 강좌를 따로 들을 수 있는 곳이 있을까요??   아니면 어떤 식으로 공부를 해야할 지 어렵습니다.

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]딱히 수업내용과 상관없긴한데 id 'org.springframework.boot' version ‘2.2.2.RELEASE' 요 부분이 오타입니다. 뭐 어차피 스프링 부트가 만들어준 그대로 사용하기 때문에 크게 상관없을 것 같긴한데 플러그인 내용들을 전부 복사하는 경우 문제가 발생할것 같아 제보합니다. 해 당내용 : queryDsl => Gradle 전체 설정 plugins {id 'org.springframework.boot' version ‘2.2.2.RELEASE'id 'io.spring.dependency-management' version '1.0.8.RELEASE' id 'java' }

  어쩌다 R프로그램을 지우고 새로 설치하게되었는데 사용자계정이 한글이여서 package 설치가 안됩니다. 이전까지 잘쓰다가 이번에 새로 깔았더니 경로가 다 날아갔는지 초기화되었는데 하루종일 붙잡고 있어도 해결이 안되요 도와주세요ㅠㅠ   R과 Rstudio는 D드라이브에 설치했고 onedrive, 백신프로그램 다끄고 관리자 권한으로 실행도 다 해봤습니다. 설치경로, 지정경로에도 한글없도록 폴더를 만들어줬는데 도대체 뭐가 문제인걸까요!! 그리고 "다운로드된 바이너리 패키지들은 다음의 위치에 있습니다" 이건 왜 C드라이브로 가는지 정말 모르겠습니다ㅠㅠ   오류코드입니다.     > install.packages("data.table") Error in install.packages : Updating loaded packages Restarting R session... Warning message: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다 Warning message: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다 Warning message: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다 Warning message: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다 > install.packages("data.table") WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding: https://cran.rstudio.com/bin/windows/Rtools/ trying URL 'https://cran.rstudio.com/bin/windows/contrib/4.2/data.table_1.14.2.zip' Content type 'application/zip' length 2240158 bytes (2.1 MB) downloaded 2.1 MB 패키지 ‘data.table’를 성공적으로 압축해제하였고 MD5 sums 이 확인되었습니다 다운로드된 바이너리 패키지들은 다음의 위치에 있습니다 C:\Windows\Temp\RtmpgvLOHC\downloaded_packages       > library(data.table) data.table 1.14.2 using 3 threads (see ?getDTthreads). Latest news: r-datatable.com Warning messages: 1: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다 2: In normalizePath(path.expand(path), winslash, mustWork) : path[1]="C:/Users/???/Documents": 파일 이름, 디렉터리 이름 또는 볼륨 레이블 구문이 잘못되었습니다  

warped = cv2.warpAffine(image_origin, metrix, (image_width, image_height),         flags=cv2.INTER_CUBIC) 이 부분에서 계속 center에 관한 에러가 발생합니다. 따로 코드를 건들이지 않고 실행만 시켰습니다.

mobaxterm 설치 후(로그인 안했는데 자동으로 된거같아요)   wsl-ubuntu랑  wsl-ubuntu20.04 두개가 나오잖아요     근데 아래껀 영상대로 잘 되는데   위에껀 오류가  뜨네요    어떻게 아래꺼로 따라해서 설치(GUI로)를 잘 하긴 했는데(울트라 다 뺏는데 50기가라서 놀랐습니다)   혹시 이 오류로 추후에 문제가 생기려나 싶어 여쭤봅니다