강사님 제가 스프링 입문 강의에서 만든 프로젝트에서 member클래스에 phoneNumber라는 이름으로 varchar(255)형 필드를 하나 추가했습니다. memberForm에도 추가를 해주고 스프링 통합 테스트를 돌릴 때도 member 객체를 생성하고 set으로  phoneNumber를 추가를 해줬는데도 다음과 같은 오류가 납니다. 왜 그런 걸까요 ㅠ (오류 코드는 아래와 같습니다.) 2021-03-06 21:46:04.645  INFO 14452 --- [           main] o.s.t.c.transaction.TransactionContext   : Began transaction (1) for test context [DefaultTestContext@5b068087 testClass = MemberServiceIntegrationTest, testInstance = hello.project1.service.MemberServiceIntegrationTest@1b800a11, testMethod = 회원가입@MemberServiceIntegrationTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@6f152006 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello.project1.Project1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@387a8303, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@d2de489, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@41330d4f, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@24c1b2d2, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@565f390, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@7f416310], 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.orm.jpa.JpaTransactionManager@652a1a17]; rollback [true] Hibernate: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? 2021-03-06 21:46:05.163  WARN 14452 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 42122, SQLState: 42S22 2021-03-06 21:46:05.163 ERROR 14452 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : Column "MEMBER0_.PHONE_NUMBER" not found; SQL statement: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? [42122-200] 2021-03-06 21:46:05.189  INFO 14452 --- [           main] o.s.t.c.transaction.TransactionContext   : Rolled back transaction for test: [DefaultTestContext@5b068087 testClass = MemberServiceIntegrationTest, testInstance = hello.project1.service.MemberServiceIntegrationTest@1b800a11, testMethod = 회원가입@MemberServiceIntegrationTest, testException = javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement, mergedContextConfiguration = [WebMergedContextConfiguration@6f152006 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello.project1.Project1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@387a8303, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@d2de489, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@41330d4f, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@24c1b2d2, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@565f390, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@7f416310], 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]] javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1602) at org.hibernate.query.Query.getResultList(Query.java:165) at hello.project1.repository.JpaMemberRepository.findByName(JpaMemberRepository.java:33) at hello.project1.service.MemberService.validateDuplicateMember(MemberService.java:26) at hello.project1.service.MemberService.join(MemberService.java:20) at hello.project1.service.MemberService$$FastClassBySpringCGLIB$$9f40d288.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) at hello.project1.service.MemberService$$EnhancerBySpringCGLIB$$b4c4763a.join(<generated>) at hello.project1.service.MemberServiceIntegrationTest.회원가입(MemberServiceIntegrationTest.java:30) 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:688) 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$6(TestMethodTestDescriptor.java:210) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$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.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:2103) at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2040) at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2018) at org.hibernate.loader.Loader.doQuery(Loader.java:948) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349) at org.hibernate.loader.Loader.doList(Loader.java:2849) at org.hibernate.loader.Loader.doList(Loader.java:2831) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2663) at org.hibernate.loader.Loader.list(Loader.java:2658) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:400) at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219) at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1414) at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1625) at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1593) ... 82 more Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "MEMBER0_.PHONE_NUMBER" not found; SQL statement: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? [42122-200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) at org.h2.message.DbException.getJdbcSQLException(DbException.java:429) at org.h2.message.DbException.get(DbException.java:205) at org.h2.message.DbException.get(DbException.java:181) at org.h2.expression.ExpressionColumn.getColumnException(ExpressionColumn.java:163) at org.h2.expression.ExpressionColumn.optimize(ExpressionColumn.java:145) at org.h2.expression.Alias.optimize(Alias.java:52) at org.h2.command.dml.Select.prepare(Select.java:1206) at org.h2.command.Parser.prepareCommand(Parser.java:744) at org.h2.engine.Session.prepareLocal(Session.java:657) at org.h2.server.TcpServerThread.process(TcpServerThread.java:278) at org.h2.server.TcpServerThread.run(TcpServerThread.java:183) at java.base/java.lang.Thread.run(Thread.java:834) at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) at org.h2.engine.SessionRemote.done(SessionRemote.java:611) at org.h2.command.CommandRemote.prepare(CommandRemote.java:85) at org.h2.command.CommandRemote.<init>(CommandRemote.java:51) at org.h2.engine.SessionRemote.prepareCommand(SessionRemote.java:481) at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1235) at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:76) at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:352) at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:337) at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:149) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ... 98 more

3:37초에 한번에 컨테이너, 이미지.네트워크 모두 삭제하고 싶다라는 말은  A에서 다른환경의 B에게 보낸후에 A 에게 남아있는 컨테이너 잔여를 말하는건가요?  예를들어 카카오톡을 설치파일을 다운 받으면 설치 후에도 남아있는 install 파일이 저 쓰지않는 도커랑 비슷할까요?  커맨드도 중요하지만 중간중간 이 커멘드를 치면 이렇게 동작해 라는 이미지가 있으면 더욱 이해도가 높아질거 같습니다 흑흑 ㅠ

안녕하세요 이해하기 쉽게 알려주시는 도커 강의 너무 만족하고 잘 보고있는 학생입니다  영상을 보다가 Stop 과 Kill을 보여 의문점이 생겨서 문의 드립니다 제가 여기 강의에서 배운 도커라는 개념은  A에서 환경(버전,os...) 뭔가가 다른 환경에서 파일이나, 데이터를 컨테이너에 실어서 전송해준다 라고 이해를 하였습니다 근데 Stop 이랑 Kill 이라는 것은 전송하고 싶은 데이터를 전송하는 중에 Stop이나 Kill을 써서 중단을 한다는 말인가요? A에서 B로 배포나 뭔가를 옮길때 굳이 저 Stop과 Kill을 쓸 일이 있을지 의문입니다 어차피 통신은 양쪽다 된다는 가정하에 뭔가를 옮기는 행위를 도커라 배웠는데 Kill이나 Stop이 어디에 쓰이는지 궁금합니다 저같으면 일단 파일을 모두 보낸후에 받은 쪽에서 그냥 지울거 같습니다 통신중인걸 중간에 지우지 않고 아니면 혹시 A에서 B로 24시간 뭔가를 계속 쏴주어야 하나요??   혹시 제가 이해하고 있는 개념이 도커의 개념과 많이 다르다면  힌트좀 부탁드립니다 꾸벅  

아래와 같은 오류가 나는 이유가 뭘까요? 학생 이름을 넣어서 특정 점수를 넘는 학생에게 합격 그렇지 못한 학생에게 불합격 글자가 뜨게 하고 싶습니다. range가 초과하는 이유도 모르겠고 70점을 넘는 학생도 있는데 모든 학생이 불합격으로 뜨는 이유도 궁금합니다.

a = 3 b = 0 while b=a:     print(a)     b=b+1 위와 같이 코드를 짰습니다.  코드를 짠 목적은 3이 3번 출력되도록 하기 위함입니다. 코드를 짜고 난 후 실행을 하니  while b=a: ^ SyntaxError: invalid syntax와 같은 오류가 납니다. 이유가 뭔가요?

선생님~ 기존 강의와 코드에서는 fit_transform 인자로 (X_train, y_train) 둘다 들어갔는데 X_train만 넣어도  X_train.shape 결과는 똑같이 나오더라고요.. y_train도 넣어주는 이유가 있나요?  피처를 다항 선생님~ (1번코드) 기존 강의와 코드에서는 fit_transform 인자로 (X_train, y_train) 둘다 들어갔는데 (2번코드) X_train만 넣어도 X_train.shape 결과는 똑같이 나오더라고요.. y_train도 넣어주는 이유가 있나요?  PolynomialFeatures가 피처엔지니어링 기법으로 피처를 다항식으로 변환하기 위함인데.. y_train은 왜 넣어주셨는지 궁금합니다. 

안녕하세요! 저는 강사님처럼 똑같이 따라했는데 톰캣도 연결이 잘 된 것 같거든요 그런데 localhost:8080을 치면 "whitelabel Error Page"가 떠버려요.. 그래서 index.html 파일에 오른쪽버튼을 클릭하여 마우스를 놓고 "run index.html" 을 클릭하여야 hello가 쓰여있는 페이지가 뜨는데 왜 이러는 걸까요? 그리고 이렇게 되도 정상인 건가요..?ㅠㅠ 톰캣에 문제가 있는 걸 까요 ㅠㅠ

저도 가로스크롤이 생겨 질문을 찾아보게 되었는데 가로스크롤에대해서 여쭤보신분 답글에 선생님이 영상을 업데이트해주신다는 댓글을 보았습니다. 영상을 다시 보았는데 혹시 아직 업데이트가 안된것이 맞나요 ? 소스코드에는 card-list-con이라는 div태그가 추가되어있는게 확인이 됬습니다!

댓글 숫자를 출력하려고 하는데 그대로 옆에 텍스트를 추가하는 방식은 안되던데   ex) {post.comments.length}  좋은 방법 알려주시면 감사여  https://github.com/node-hyun/nodebird-deploy/blob/master/front/components/PostCard.js

exe 파일만 생성이 안되네요...

안녕하세요, 강사님. static class SameBeanConfig을 만들면서 syntax 에러로 테스트 자체가 수행이 안되어 질문드립니다. 현재 윈도우 이클립스ide 자바 11버전 사용하고 있습니다. class 밑부분에 빨간줄로 Syntax error on token "class", @ expected 라고 나고 테스트에는  java.lang.Error: Unresolved compilation problems:  Syntax error on token "class", @ expected Syntax error, insert "}" to complete Block Syntax error on token "}", delete this token 라고 나옵니다.  package hello.core.beanfind; import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; import org.springframework.context.annotation.AnnotationConfigApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import hello.core.AppConfig; import hello.core.member.MemberRepository; import hello.core.member.MemoryMemberRepository; class ApplicationContextSameBeanFindTest { AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(SameBeanConfig.class); @Test @DisplayName("타입으로 조회 시 같은 타입이 둘 이상 있으면, 중복 오류가 발생한다") void findBeanByTypeDuplicate() { MemberRepository bean = ac.getBean(MemberRepository.class); } @Configuration static class SameBeanConfig() { @Bean public MemberRepository memberRepository1() { return new MemoryMemberRepository(); } @Bean public MemberRepository memberRepository2() { return new MemoryMemberRepository(); } } }

선생님 view로  jsp를 한 번 써 보려고 구글검색해서 해 보았는데요  그래들에  임베디드 jsper  가지고 와서 리프레쉬 하고 서버 재시작하면 계속 오류가 납니다.   jsp로  view를 사용하려면 어떻게 하면 될까요?  부탁드려요~

안녕하세요~ 예제 2번에서 입력예제는 아래와 같고 10 3 2 10 1 5 4 6 8 9 6 출력 예제는 아래와 같습니다. 3  LRR > 그런데 저희가 구현한 알고리즘 대로라면 10도 출력 되어야 할 것 같은데요. (last = 9, lt = 10 이고 rt = 8이 되는 시점부터 생각해보면) 10 이 출력된다면 4가 나와야 할 것 같습니다. 그런데 출력 결과는 3이어서 코드의 어떤 부분에 의해서 10이 제외 된 것인지 궁금합니다! 제가 맥이어서 테스트를 돌려보지 못해서요 ㅠㅠ 감사합니다~!

그리고 sliding window 방식으로 푸는 것도 올려주실 수 있을까요??

API 서버가 먹통이네요... 화면에 보이는것이 없으니, 실습을 할 수가 없습니다. 다른 API로 변경 혹은 API 서버가 오류인 경우 내부 데이터를 가져오는것으로 변경해주셨으면 합니다.

우선 질문들에 비슷한 오류가 많길래 거기 답변대로 해보았는데도 오류가 해결되지 않아 질문드립니다. 제가 해본것은  1. yml파일 띄어쓰기 확인 2. 저는 junit5를 사용해서 어노테이션 적절히 변경 3. h2 실행을 시키고 테스트하기  4. build.gradle에 h2 버젼 지정 이렇게 해보았는데 오류가 잡히질 않네요; 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.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$6(ClassBasedTestDescriptor.java:350) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:355) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$7(ClassBasedTestDescriptor.java:350) 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:349) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$4(ClassBasedTestDescriptor.java:270) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:269) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$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:1153) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:907) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) 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) ... 92 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) ... 108 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) ... 125 more

안녕하세요, [1]. HLS tool을 이용해서 C로 설계한다면, OpenCV 같은 외부 라이브러리를 가져와서 설계 하나요?  [2]. 검증엔지니어에 관심이 있다면, system verilog를 배우고 HLS를 배우나요?

안녕하세요 영한님 제목에 있는 강의를 듣던 도중 궁금 한 것이 생겨 질문 남깁니다. 다름이아니라 아래와 같이 코드를 구성하였을 때 DiscountService는 AnnotationConfigApplicationContext에 넣어줌으로써 Bean으로 등록 된다는 것은 이해가 됩니다. 하지만 DiscountService 클래스에 있는 policyMap 과policyList는 제 생각으로는 아무것도 등록이 안되어있는 것이 맞을 텐데 어떻게 FixDiscountpolicy와 RateDiscountPolicy가 들어가는지 이해가 잘 되지 않습니다. 이 필드들은 각각 Map과 List이고 제네릭(?)만 DiscountPolicy 인데  스프링 컨테이너가 "음 Map 과 List 가 DiscountPolicy로 표현이 되었네?  그럼 내가 DiscountPolicy 타입으로 된 Bean이 있나?  아 ! AutoAppConfig에서 ComponentScan으로 해보니까 FixDiscountpolicy, RateDiscountPolicy가 있네? 그럼 그냥 이거 넣어야 겠다." 이런  메커니즘으로 동작하는 것인가요?

안녕하세요.  이전 16강 질문에 주신 답변 잘 확인하였습니다. 오류가 지속되어 다시 문의드리고자 하는데요, ------------------- 오류 내용: 절대 URI인 [http://www.springframework.org/tags/form]을(를), web.xml 또는 이 애플리케이션과 함께 배치된 JAR 파일 내에서 찾을 수 없습니다. ------------------------------ 답변 주신 부분 확인 후 .m2 파일을 지우고 이클립스 실행을 여러 번 해보았지만 오류가 해결되지 않습니다. 지금까지 인터넷을 검색해서 시도해 본 것은 WEB/INF 하위 lib 폴더에 직접 jstl.jar 파일을 추가, classpath 확인, 톰캣 폴더 내 lib 안에 jstl.jar 추가, catalina.properties 파일을 확인, taglib dependecy 추가, spring-webmvc dependecy 삭제 후 다시 붙여넣기 제가 작성한 프로젝트가 아닌 수업자료의 소스코드 임포트하여 실행, 모두 같은 오류가 지속됩니다. 인터넷을 검색해도 무엇이 문제인지 잘 모르겠습니다. 톰캣을 삭제하고 다시 깔라는 글도 보았는데, 일단 이전에 톰캣 8.5 설치 후 9로 재설치하고자, 완전 삭제(?) 키워드로 검색하여 인터넷을 참고하여 삭제했지만  삭제가 잘 안 된 상태에서 9를 깔았었는데.. 톰캣이 문제인지, 아니면 혹시 발견 못한 소스 상 문제가 있는지.. 시간을 많이 써도 해결을 못해 코드 첨부합니다. ----------------------------------------------< pom.xml > ------------------------------------------------------- <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>11_FormCustomTag</groupId> <artifactId>11_FormCustomTag</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <build> <sourceDirectory>src</sourceDirectory> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <release>14</release> </configuration> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.3</version> <configuration> <warSourceDirectory>WebContent</warSourceDirectory> </configuration> </plugin> </plugins> </build> <!-- 라이브러리 버전 관리 --> <properties> <!-- servlet --> <javax.servlet-version>4.0.1</javax.servlet-version> <!-- jsp --> <javax.servlet.jsp-version>2.3.3</javax.servlet.jsp-version> <!-- jstl --> <javax.servlet.jsp.jstl-version>1.2</javax.servlet.jsp.jstl-version> <!-- spring web mvc --> <org.springframework-version>5.3.4</org.springframework-version> <!-- <org.springframework-version>4.3.30.RELEASE</org.springframework-version> --> </properties> <!-- 라이브러리 세팅 부분 --> <dependencies> <!-- servlet (공통세팅) --> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>${javax.servlet-version}</version> <scope>provided</scope> </dependency> <!-- jsp (공통세팅) --> <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api --> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>javax.servlet.jsp-api</artifactId> <version>${javax.servlet.jsp-version}</version> <scope>provided</scope> </dependency> <!-- jstl (공통세팅) --> <!-- https://mvnrepository.com/artifact/javax.servlet/jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>${javax.servlet.jsp.jstl-version}</version> </dependency> <!-- spring web mvc (공통세팅) --> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${org.springframework-version}</version> </dependency> </dependencies> </project> -----------------------------------------------------------------------< test2.jsp>-------------------------------- <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <h1>test2</h1> <!-- 사용할 프로퍼티들이 들어있는 빈을 지정 --> <form:form modelAttribute="userDataBean" action="result"> <!-- path에는 지정한 객체 안의 필드명 --> 이름 : <form:input path="user_name"/><br> 아이디 : <form:input path="user_id"/><br> 비밀번호 : <form:password path="user_pw" showPassword="true"/><br> <!-- 비밀번호도 보이게 하려면 showPassword="true" --> 우편번호 : <form:input path="user_postcode"/><br> 주소1 : <form:input path="user_address1"/><br> 주소2 : <form:input path="user_address2"/><br> <button type="submit">확인</button> </form:form> </body> </html>

좌우 방향성이 있는 그림을 좌 키 눌렀을떄와 우키 눌렀을떄 방향을 그에 맞춰 뒤집는 방법에 대해 궁금합니다. 제가 해본 코드는 다음과 같은데, ### 캐릭터  이미지 설정 부분에서 ch0 와 ch1 을 설정해서, 하나는 기본값으로 다른 하난 뒤집은 상태로 초기 값을 정의하고,  ch = pygame.image.load("이미지 주소") ch0 = ch ch1 = pygame.transform.flip(ch, True, False) ### 이하 방향키 이벤트에서,         if event.type == pygame.KEYDOWN:             if event.key == pygame.K_LEFT:                 to_x -= move                ch = ch0             elif event.key == pygame.K_RIGHT:                 to_x += move                ch = ch1 로 이미지를 교체 하면 어떨까 하는데, 이렇게 하면 제 가 보기에는 잘 작동하는 것으로 보입니다.  그러나, flip의 기준점을 모르기 떄문에, 픽셀상의 오차가 발생하지는 않을지, 하는 문제가 궁금하고, 위와 같은 방식이 괜찮은지 혹은 안괜찮다면, 다른 대안이 있는지 궁금합니다.