- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. 제발 HELP MEㅠㅠ LCA2 백준 11438 http://boj.kr/261436dc78f24a0786640c9876a6ed08 강의에 없는 것도 질문 드려도 되나 모르겠는데 너무 간절해서 올립니다. 왜 시간초과가 나는건지 백준 게시판 싹싹 뒤져서 반례 돌려봐도 다 맞는데 왜 안돼는지 제발.... 아무나 좀 도와주세요ㅠㅠㅠ 큰돌선생님이 도와주시면 더더욱 감사하구요
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예/아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) [질문 내용] 여기에 질문 내용을 남겨주세요. http://localhost:8080/hello-static.html 주소 입력시 저는 에러창이 뜹니다.. 정적 컨텐츠 입니다. 라는 글씨가 안뜨고 밑에 ERROR 47127 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : 에러창이 뜹니다. 무엇이 잘못된 것인지 모르겠습니다...
저도 이 수업에서 올려주신 ckeditor5를 설치하고 webpack 설정을 하던중 @ckeditor/ckeditor5-dev-utils 와 @ckeditor/ckeditor5-dev-webpack-plugin 이 찾을수 없다고 하여 강의를 포기하게되었습니다.. 밑에글쓴분과 똑같은 오류로요.. 해결방법이있을까요?
강사님께서주신 테이블코드 복붙해서 sql develoment에 실행하였으나 명령의 1 행에서 시작하는 중 오류 발생 - create sequence user_seq start with 0 increment by 1 minvalue 0 오류 보고 - ORA-00955: 기존의 객체가 이름을 사용하고 있습니다. 00955. 00000 - "name is already used by an existing object" *Cause: *Action: 명령의 6 행에서 시작하는 중 오류 발생 - create sequence content_seq start with 0 increment by 1 minvalue 0 오류 보고 - ORA-00955: 기존의 객체가 이름을 사용하고 있습니다. 00955. 00000 - "name is already used by an existing object" *Cause: *Action: 명령의 11 행에서 시작하는 중 오류 발생 - create table board_info_table( board_info_idx number constraint BOARD_INFO_PK primary key, board_info_name varchar2(500) not null ) 오류 보고 - ORA-00955: 기존의 객체가 이름을 사용하고 있습니다. 00955. 00000 - "name is already used by an existing object" *Cause: *Action: 명령의 16 행에서 시작하는 중 오류 발생 - insert into board_info_table(board_info_idx, board_info_name) values (1, '자유게시판') 오류 보고 - ORA-00001: 무결성 제약 조건(EXAM.BOARD_INFO_PK)에 위배됩니다 명령의 17 행에서 시작하는 중 오류 발생 - insert into board_info_table(board_info_idx, board_info_name) values (2, '유머게시판') 오류 보고 - ORA-00001: 무결성 제약 조건(EXAM.BOARD_INFO_PK)에 위배됩니다 명령의 18 행에서 시작하는 중 오류 발생 - insert into board_info_table(board_info_idx, board_info_name) values (3, '정치게시판') 오류 보고 - ORA-00001: 무결성 제약 조건(EXAM.BOARD_INFO_PK)에 위배됩니다 명령의 19 행에서 시작하는 중 오류 발생 - insert into board_info_table(board_info_idx, board_info_name) values (4, '스포츠게시판') 오류 보고 - ORA-00001: 무결성 제약 조건(EXAM.BOARD_INFO_PK)에 위배됩니다 커밋 완료. 명령의 23 행에서 시작하는 중 오류 발생 - create table user_table( user_idx number constraint USER_PK primary key, user_name varchar2(50) not null, user_id varchar2(100) not null, user_pw varchar2(100) not null ) 오류 보고 - ORA-00955: 기존의 객체가 이름을 사용하고 있습니다. 00955. 00000 - "name is already used by an existing object" *Cause: *Action: 명령의 30 행에서 시작하는 중 오류 발생 - create table content_table( content_idx number constraint CONTENT_PK primary key, content_subject varchar2(500) not null, content_text long not null, content_file varchar2(500), content_writer_idx number not null constraint CONTENT_FK1 references user_table(user_idx), content_board_idx number not null constraint CONTENT_FK2 references board_info_table(board_info_idx), content_date date not null ) 오류 보고 - ORA-00942: 테이블 또는 뷰가 존재하지 않습니다 00942. 00000 - "table or view does not exist" *Cause: *Action: 러한 이유로 테이블이 만들어지지 않습니다..
[질문 내용] 수업중에 만든 itemService에 jpa 기능을 적용해 보았는데 itemRepositoryTest 실행시 오류가 발생합니다. test에서는 메모리 DB를 사용하기위해 item-service/src/test/resources/application.yml에 아래 코드를 추가했습니다. spring : logging.level : org.hibernate.SQL : debug _________________________________________________________________ package hello.itemservice.domain.item; import org.junit.jupiter.api.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.annotation.Rollback; import org.springframework.test.context.junit4.SpringRunner; import org.springframework.transaction.annotation.Transactional; import java.util.List; import static org.assertj.core.api.Assertions.*; @RunWith(SpringRunner.class) @SpringBootTest class ItemRepositoryTest { @Autowired ItemRepository itemRepository; @Test @Transactional @Rollback(false) public void testItem() { //given Item item = new Item("itemZ", 10000, 10); //when Item savedItem = itemRepository.save(item); //then Item findItem = itemRepository.findById(item.getId()); assertThat(findItem).isEqualTo(savedItem); } } _____________________________________________________________ * 오류내용 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:1625) 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$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:362) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$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$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$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$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1354) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1204) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1153) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:907) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:123) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ... 69 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ... 97 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ... 111 more Caused by: org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName(DataSourceProperties.java:235) at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.initializeDataSourceBuilder(DataSourceProperties.java:176) at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource(DataSourceConfiguration.java:48) at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari.dataSource(DataSourceConfiguration.java:90) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:564) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 112 more __________________________________________________________ *Item package hello.itemservice.domain.item; import lombok.Getter; import lombok.Setter; import javax.persistence.*; @Getter @Setter @Entity @Table(name="item") public class Item { @Id @GeneratedValue private Long id; private String itemName; private int price; private int quantity; public Item() { } public Item(String itemName, Integer price, Integer quantity) { this.itemName = itemName; this.price = price; this.quantity = quantity; } } ___________________________________________________ * ItemRepository package hello.itemservice.domain.item; import org.springframework.stereotype.Repository; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import java.util.List; @Repository public class ItemRepository { @PersistenceContext private EntityManager em; public Item save(Item item) { em.persist(item); return item; } public void deleteById(Long id) { Item item = em.find(Item.class, id); em.remove(item); } public Item findById(Long id) { return em.find(Item.class, id); } public List<Item> findAll() { return em.createQuery("select i from Item i", Item.class) .getResultList(); } public void update(Long itemId, Item updateParam) { Item savedItem = em.createQuery("select i from Item i where i.id = :id", Item.class) .setParameter("id", itemId) .getSingleResult(); savedItem.setItemName(updateParam.getItemName()); savedItem.setPrice(updateParam.getPrice()); savedItem.setQuantity(updateParam.getQuantity()); } }
- 섹션 2를 시작하려다 발생한 문제입니다. 가상 에뮬레이터를 통해 잘 실행이 되다가 갑자기 되지 않습니다. FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:mergeDebugResources'. > A failure occurred while executing com.android.build.gradle.internal.res.ResourceCompilerRunnable > Resource compilation failed. Check logs for details. .gradle\caches\transforms-3\4a0459cf8027e878199dffe973fa9303\transformed\appcompat-1.2.0\res\values\values.xml:38:4: Invalid <color> for given resource value. => 이 부분에 대한 오류로 보입니다. 해당 코드는 <color name ="highlighted_text_material_light" > #66009688 </color> 으로, 지우거나 대체해봐도 바로 윗 줄에서 동일한 오류가 발생합니다. 찾아보니 버전이나 이미지에 대한 오류로 보이기도 하는데 마땅한 해결되는 정보를 찾을 수 없어 질문드립니다.
그래픽스 포폴로 왜 DirectX를 많이 사용하는지 궁금합니다 . 오픈지엘이 크로스 플랫폼이라 배워두면 범용성이 더 좋을거 같아서요 단순히 성능의 차이가 심해서 인가요 ? PC게임은 오픈지엘로 못 만들 수준이라던지.. 다른 이유가 있는 것인지 .. 아직 둘다 얕게 아는정도라 잘 모르겠습니다. 만약에 오픈지엘과 다렉 둘 중 하나만 만들수 있는 시간이라면 무조건 다렉 포폴이라 생각하시나요 ?
YOLOv5 Custom Training - GPU 를 위하여 roboflow 사이트에서 public Datasets 에 가서 Synthetic Fruit Dataset 이미지를 다운로드 할려고 하는데 우측 상단에 있는 Download 아이콘이 눌러지지도 않고 팝업창이 뜨지를 않습니다 . 이유를 모르겠습니다 ,
다른 코드들은 이해가 가는데 밑의 두가지 유형의 코드는 이해 하기가 좀 힘듭니다 replace가 문자열들을 치환한다 했는데 밑의 두개는 무엇을 치환하는지 모르겠습니다..! f romText =fromText.replaceAll("eval\\((.*)\\)",""); fromText =fromText.replaceAll("[\\\"\\\'][\\s]*javascript:(.*[\\\"\\\']","\"\"");
안녕하세요. 항상 친절한 답변 감사합니다. 이번 강의를 보다가 궁금증이 몇 개 생겨 질문드립니다. 1. Use Case가 MVC 패턴의(?) service와 비슷하다는 느낌을 받았는데 비슷한 개념인지 궁금합니다. 2. 기능에 따라 (강의에서는 5개(업데이트, 추가, 삭제 등)) class 별로 각자 구현하였는데 이 방식이 call 함수를 쓰기 위함인지 궁금합니다. MVC에서는 Service 계층에서 하나의 클래스 안에 필요한 메서드(Use Case)를 생성했었는데 기능 하나마다 클래스를 만드니 메모리면에서(큰 프로젝트에서는) 낭비가 되지 않나 싶습니다. 3. 모델이 여러개인 경우 use_case 안에 여러개의 모델 디렉토리를 만들어 그 모델 디렉토리 안에서 dart파일을 보통 관리하나요? 4. note_repository에서 추상클래스를 만들고, 그를 구현하는 NoteRepositoryImpl를 만들고, 구현한 그를 사용하는 db_helper를 또 만들었습니다. Impl과 helper를 합칠만하다고 생각하는데 따로 관리하는 이유가 궁금합니다.
- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. 맥북이용중입니다. command prompt가 안나오는데 이 부분은 어떻게 해결 할 수 있을까요?
