일단 jpa로 진행하던중 오류가 났습니다.. Member.java Member.javapackage hwang.hwangspring.domain; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity //->JPA가 관리하는 ENTITY라는 의미가 됨 public class Member { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; //시스템이 정해줌 private String name; //고객이 회원가입할 때 적는 이름 public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } } JpaMemberRepository.java import javax.persistence.EntityManager; import java.util.List; import java.util.Optional; public class JpaMemberRepository implements MemberRepository{ private final EntityManager em; public JpaMemberRepository(EntityManager em) { this.em = em; } @Override public Member save(Member member) { em.persist(member); return member; } @Override public Optional<Member> findById(Long id) { Member member = em.find(Member.class,id); return Optional.ofNullable(member); } @Override public Optional<Member> findByName(String name) { List<Member> result= em.createQuery("select m from Member m where m.name =:name",Member.class) .setParameter("name",name) .getResultList(); return result.stream().findAny(); } @Override public List<Member> findAll() { List<Member> result = em.createQuery("select m from Member m", Member.class).getResultList(); return result; //객체 자체를 return, } } Springconfig.java import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.persistence.Entity; import javax.persistence.EntityManager; import javax.sql.DataSource; @Configuration public class SpringConfig { private final EntityManager em; private final DataSource dataSource; @Autowired public SpringConfig(DataSource dataSource,EntityManager em){ this.dataSource=dataSource; this.em=em; } @Bean public MemberService memberService() { // 이 로직을 등록해서 스프링 빈에 등록을 해줌 return new MemberService((MemoryMemberRepository) memberRepository()); //MemberService()가 스트링빈에 등록됨 } @Bean public MemberRepository memberRepository(){ return new JpaMemberRepository(em); } } MemberIntegrataionTest를 실행할경우 package hwang.hwangspring.service; import hwang.hwangspring.domain.Member; import hwang.hwangspring.repository.MemberRepository; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.transaction.annotation.Transactional; import static org.assertj.core.api.Assertions.assertThat; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertThrows; @SpringBootTest @Transactional class MemberServiceIntegrationTest { @Autowired MemberService memberService; @Autowired MemberRepository memberRepository; @Test public void 회원가입() throws Exception { //Given Member member = new Member(); member.setName("hello"); //When Long saveId = memberService.join(member); //Then Member findMember = memberRepository.findById(saveId).get(); assertEquals(member.getName(), findMember.getName()); } @Test public void 중복_회원_예외() throws Exception { //Given Member member1 = new Member(); member1.setName("spring"); Member member2 = new Member(); member2.setName("spring"); //When memberService.join(member1); IllegalStateException e = assertThrows(IllegalStateException.class, () -> memberService.join(member2));//예외가 발생해야 한다. assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다."); } } 아래와 같은 오류가 뜹니다 ㅠㅠ java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext( DefaultCacheAwareContextLoaderDelegate.java:98 ) at org.springframework.test.context.support .DefaultTestContext.getApplicationContext( DefaultTestContext.java:124 ) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary( ServletTestExecutionListener.java:190 ) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance( ServletTestExecutionListener.java:132 ) at org.springframework.test.context.TestContextManager.prepareTestInstance( TestContextManager.java:248 ) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance( SpringExtension.java:138 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8( ClassBasedTestDescriptor.java:363 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable( ClassBasedTestDescriptor.java:368 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9( ClassBasedTestDescriptor.java:363 ) at java.base/java.util.stream.ReferencePipeline$3$1.accept( ReferencePipeline.java:195 ) at java.base/java.util.stream.ReferencePipeline$2$1.accept( ReferencePipeline.java:177 ) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining( ArrayList.java:1655 ) at java.base/java.util.stream.AbstractPipeline.copyInto( AbstractPipeline.java:484 ) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto( AbstractPipeline.java:474 ) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining( StreamSpliterators.java:312 ) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining( Streams.java:735 ) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining( Streams.java:734 ) at java.base/java.util.stream.ReferencePipeline$Head.forEach( ReferencePipeline.java:658 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors( ClassBasedTestDescriptor.java:362 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6( ClassBasedTestDescriptor.java:283 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance( ClassBasedTestDescriptor.java:282 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4( ClassBasedTestDescriptor.java:272 ) at java.base/java.util.Optional.orElseGet( Optional.java:369 ) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5( ClassBasedTestDescriptor.java:271 ) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances( TestInstancesProvider.java:31 ) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0( TestMethodTestDescriptor.java:102 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare( TestMethodTestDescriptor.java:101 ) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare( TestMethodTestDescriptor.java:66 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$prepare$2( NodeTestTask.java:123 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.prepare( NodeTestTask.java:123 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.execute( NodeTestTask.java:90 ) at java.base/java.util.ArrayList.forEach( ArrayList.java:1541 ) at org.junit.platform.engine.support .hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll( SameThreadHierarchicalTestExecutorService.java:41 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$6( NodeTestTask.java:155 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$8( NodeTestTask.java:141 ) at org.junit.platform.engine.support .hierarchical.Node.around( Node.java:137 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$9( NodeTestTask.java:139 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.executeRecursively( NodeTestTask.java:138 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.execute( NodeTestTask.java:95 ) at java.base/java.util.ArrayList.forEach( ArrayList.java:1541 ) at org.junit.platform.engine.support .hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll( SameThreadHierarchicalTestExecutorService.java:41 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$6( NodeTestTask.java:155 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$8( NodeTestTask.java:141 ) at org.junit.platform.engine.support .hierarchical.Node.around( Node.java:137 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.lambda$executeRecursively$9( NodeTestTask.java:139 ) at org.junit.platform.engine.support .hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.executeRecursively( NodeTestTask.java:138 ) at org.junit.platform.engine.support .hierarchical.NodeTestTask.execute( NodeTestTask.java:95 ) at org.junit.platform.engine.support .hierarchical.SameThreadHierarchicalTestExecutorService.submit( SameThreadHierarchicalTestExecutorService.java:35 ) at org.junit.platform.engine.support .hierarchical.HierarchicalTestExecutor.execute( HierarchicalTestExecutor.java:57 ) at org.junit.platform.engine.support .hierarchical.HierarchicalTestEngine.execute( HierarchicalTestEngine.java:54 ) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:107 ) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:88 ) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0( EngineExecutionOrchestrator.java:54 ) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams( EngineExecutionOrchestrator.java:67 ) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:52 ) at org.junit.platform.launcher.core.DefaultLauncher.execute( DefaultLauncher.java:114 ) at org.junit.platform.launcher.core.DefaultLauncher.execute( DefaultLauncher.java:86 ) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute( DefaultLauncherSession.java:86 ) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute( SessionPerRequestLauncher.java:53 ) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs( JUnit5IdeaTestRunner.java:57 ) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute( IdeaTestRunner.java:38 ) at com.intellij.rt.execution.junit.TestsRepeater.repeat( TestsRepeater.java:11 ) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs( IdeaTestRunner.java:35 ) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart( JUnitStarter.java:232 ) at com.intellij.rt.junit.JUnitStarter.main( JUnitStarter.java:55 ) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberController' defined in file [C:\Users\hyk46\hwang-spring\hwang-spring\out\production\classes\hwang\hwangspring\controller\MemberController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hwang/hwangspring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app') at org.springframework.beans.factory.support .ConstructorResolver.createArgumentArray( ConstructorResolver.java:800 ) at org.springframework.beans.factory.support .ConstructorResolver.autowireConstructor( ConstructorResolver.java:229 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.autowireConstructor( AbstractAutowireCapableBeanFactory.java:1372 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.createBeanInstance( AbstractAutowireCapableBeanFactory.java:1222 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.doCreateBean( AbstractAutowireCapableBeanFactory.java:582 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.createBean( AbstractAutowireCapableBeanFactory.java:542 ) at org.springframework.beans.factory.support .AbstractBeanFactory.lambda$doGetBean$0( AbstractBeanFactory.java:335 ) at org.springframework.beans.factory.support .DefaultSingletonBeanRegistry.getSingleton( DefaultSingletonBeanRegistry.java:234 ) at org.springframework.beans.factory.support .AbstractBeanFactory.doGetBean( AbstractBeanFactory.java:333 ) at org.springframework.beans.factory.support .AbstractBeanFactory.getBean( AbstractBeanFactory.java:208 ) at org.springframework.beans.factory.support .DefaultListableBeanFactory.preInstantiateSingletons( DefaultListableBeanFactory.java:955 ) at org.springframework.context.support .AbstractApplicationContext.finishBeanFactoryInitialization( AbstractApplicationContext.java:920 ) at org.springframework.context.support .AbstractApplicationContext.refresh( AbstractApplicationContext.java:583 ) at org.springframework.boot.SpringApplication.refresh( SpringApplication.java:731 ) at org.springframework.boot.SpringApplication.refreshContext( SpringApplication.java:408 ) at org.springframework.boot.SpringApplication.run ( SpringApplication.java:307 ) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext( SpringBootContextLoader.java:136 ) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal( DefaultCacheAwareContextLoaderDelegate.java:141 ) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext( DefaultCacheAwareContextLoaderDelegate.java:90 ) ... 71 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hwang/hwangspring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app') at org.springframework.beans.factory.support .ConstructorResolver.instantiate( ConstructorResolver.java:658 ) at org.springframework.beans.factory.support .ConstructorResolver.instantiateUsingFactoryMethod( ConstructorResolver.java:486 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod( AbstractAutowireCapableBeanFactory.java:1352 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.createBeanInstance( AbstractAutowireCapableBeanFactory.java:1195 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.doCreateBean( AbstractAutowireCapableBeanFactory.java:582 ) at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.createBean( AbstractAutowireCapableBeanFactory.java:542 ) at org.springframework.beans.factory.support .AbstractBeanFactory.lambda$doGetBean$0( AbstractBeanFactory.java:335 ) at org.springframework.beans.factory.support .DefaultSingletonBeanRegistry.getSingleton( DefaultSingletonBeanRegistry.java:234 ) at org.springframework.beans.factory.support .AbstractBeanFactory.doGetBean( AbstractBeanFactory.java:333 ) at org.springframework.beans.factory.support .AbstractBeanFactory.getBean( AbstractBeanFactory.java:208 ) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate( DependencyDescriptor.java:276 ) at org.springframework.beans.factory.support .DefaultListableBeanFactory.doResolveDependency( DefaultListableBeanFactory.java:1391 ) at org.springframework.beans.factory.support .DefaultListableBeanFactory.resolveDependency( DefaultListableBeanFactory.java:1311 ) at org.springframework.beans.factory.support .ConstructorResolver.resolveAutowiredArgument( ConstructorResolver.java:887 ) at org.springframework.beans.factory.support .ConstructorResolver.createArgumentArray( ConstructorResolver.java:791 ) ... 89 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app') at org.springframework.beans.factory.support .SimpleInstantiationStrategy.instantiate( SimpleInstantiationStrategy.java:185 ) at org.springframework.beans.factory.support .ConstructorResolver.instantiate( ConstructorResolver.java:653 ) ... 103 more Caused by: java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app') at hwang.hwangspring.SpringConfig.memberService( SpringConfig.java:29 ) at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599.CGLIB$memberService$0(<generated>) at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599$$FastClassBySpringCGLIB$$aa36e038.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invokeSuper( MethodProxy.java:244 ) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept( ConfigurationClassEnhancer.java:331 ) at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599.memberService(<generated>) 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.springframework.beans.factory.support .SimpleInstantiationStrategy.instantiate( SimpleInstantiationStrategy.java:154 ) ... 104 more
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) 예 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 예 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) 예 [질문 내용] //@PostMapping("/add") //requestParam 은 form 의 name 이름과 같아야함 public String saveV3(@ModelAttribute Item item,Model model){ // @ModelAttribute("item") 도생략가능하다. //Item (class명) ->item itemRepository.save(item); return "/basic/item"; } 이 코드에서 @ModelAttribute 가 html 의 name 속성과 Item class 를 매칭시켜주고 그래서 itemRepository에 저장 로직에서 사용된다는 거까지는 이해했습니다. 그러나 다시 '/basic/item' 화면으로 갈때 어떻게 저장시킨 item 이 화면에 렌더링되는건지 궁금합니다. Item newItem = itemRepository.save(item); model.addAttribute("item",newItem); 즉 , 이 과정이 어떻게 생략되서 작동되는지 원리가 궁금합니다.
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. 1:10 쯤 testcase 를 위한 package 생성을 하는데 제 파일은 패키지가 아닌건지 패키지를 생성할 수 있는 버튼이 뜨지 않습니다. 왜 이럴까요 ㅜㅜ
1. 강의 내용과 관련된 질문인가요? 예 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예 3. 질문 잘하기 메뉴얼을 읽어보셨나요? 아니오 [질문 내용] 강의 마지막에 강사님께서 디자이너, 웹 퍼블리셔, 백엔드 개발자가 협업하여 서비스를 제작하게 된다는 설명을 해주셨습니다. 참고 부분에서 질문하고 싶은 부분이 있습니다. 마지막 문장에서 "백엔드 개발자는 HTML 뷰 템플릿을 직접 만지는 대신에, HTTP API를 통해 웹 클라이언트가 필요로 하는 데이터와 기능을 제공하면 된다." 라고 적혀있었는데 HTTP API를 설계하는 것은 백엔드 개발자가 하는 것은 당연하지만, 어떤 HTTP API를 요구하는 지에 대해서는 프론트엔드 개발자가 하는 것인지 백엔드 개발자가 하는 것인지는 궁금합니다. 설명을 덧붙이자면 디자이너분이 제공한 게시판 뷰가 있을 때 제공된 뷰에서 프론트 엔드 개발자가 화면을 만들기 위해서 백엔드 개발자에게 API를 요구하는 편이 일반적인지 혹은 백엔드 개발자가 API를 설계하여 일방적으로 프론트 개발자에게 제공하는게 일반적인지 궁금합니다. 감사합니다.
Could not connect to New MySQL. Error creating SQL Model Connection connection to New MySQL. (Error: Could not create connection to database server.) Could not create connection to database server. Error creating JDBC Connection connection to New MySQL. (Error: Could not create connection to database server.) Could not create connection to database server. 계속 이 에러가 뜨면서 Mysql 연결이 안됩니다.. 구글링 해봤는데도 해결이 안되네요..
[질문 템플릿] 1. 강의 내용과 관련된 질문인가요? 예 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예 3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예 [질문 내용] 여기에 질문 내용을 남겨주세요. new-form.jsp는 잘 접속이 되는데 전송을 누르면 아래와 같이 오류가 발생합니다. 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hello.servlet.ServletApplication . ____ _ /\\ / ___'_ __ ( _)_ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v3.0.6) 2023-07-10T21:21:29.054+09:00 INFO 18224 --- [ main] hello.servlet.ServletApplication : Starting ServletApplication using Java 17.0.2 with PID 18224 (C:\Users\user\Desktop\여름방학\mvc1\servlet\servlet\out\production\classes started by user in C:\Users\user\Desktop\여름방학\mvc1\servlet\servlet) 2023-07-10T21:21:29.057+09:00 INFO 18224 --- [ main] hello.servlet.ServletApplication : No active profile set, falling back to 1 default profile: "default" 2023-07-10T21:21:29.690+09:00 INFO 18224 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2023-07-10T21:21:29.722+09:00 INFO 18224 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 21 ms. Found 0 JPA repository interfaces. 2023-07-10T21:21:30.369+09:00 INFO 18224 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2023-07-10T21:21:30.380+09:00 INFO 18224 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2023-07-10T21:21:30.380+09:00 INFO 18224 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.8] 2023-07-10T21:21:30.613+09:00 INFO 18224 --- [ main] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 2023-07-10T21:21:30.622+09:00 INFO 18224 --- [ main] o.a.c.c.C.[Tomcat].[ localhost ].[/] : Initializing Spring embedded WebApplicationContext 2023-07-10T21:21:30.623+09:00 INFO 18224 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1515 ms 2023-07-10T21:21:30.874+09:00 INFO 18224 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... 2023-07-10T21:21:31.055+09:00 INFO 18224 --- [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Added connection conn0: url=jdbc:h2:mem:2a429fff-9c3c-4c40-906c-f7cb210a3f6a user=SA 2023-07-10T21:21:31.057+09:00 INFO 18224 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed. 2023-07-10T21:21:31.109+09:00 INFO 18224 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default] 2023-07-10T21:21:31.171+09:00 INFO 18224 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 6.1.7.Final 2023-07-10T21:21:31.473+09:00 INFO 18224 --- [ main] SQL dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect 2023-07-10T21:21:31.720+09:00 INFO 18224 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform] 2023-07-10T21:21:31.734+09:00 INFO 18224 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 2023-07-10T21:21:31.767+09:00 WARN 18224 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning 2023-07-10T21:21:31.964+09:00 INFO 18224 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page: ServletContext resource [/index.html] 2023-07-10T21:21:32.242+09:00 INFO 18224 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path '' 2023-07-10T21:21:32.251+09:00 INFO 18224 --- [ main] hello.servlet.ServletApplication : Started ServletApplication in 3.565 seconds (process running for 3.966) 2023-07-10T21:21:38.052+09:00 DEBUG 18224 --- [nio-8080-exec-1] o.a.coyote.http11.Http11InputBuffer : Before fill(): parsingHeader: [true], parsingRequestLine: [true], parsingRequestLinePhase: [0], parsingRequestLineStart: [0], byteBuffer.position(): [0], byteBuffer.limit(): [0], end: [0] 2023-07-10T21:21:38.053+09:00 DEBUG 18224 --- [nio-8080-exec-1] o.a.coyote.http11.Http11InputBuffer : Received [POST /jsp/members/save.jsp HTTP/1.1 Host: localhost:8080 Connection: keep-alive Content-Length: 19 Cache-Control: max-age=0 sec-ch-ua: "Not.A/Brand";v="8", "Chromium";v="114", "Google Chrome";v="114" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Windows" Upgrade-Insecure-Requests: 1 Origin: http://localhost:8080 Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Referer: http://localhost:8080/jsp/members/new-form.jsp Accept-Encoding: gzip, deflate, br Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7 Cookie: JSESSIONID=3F23CBF50B03D193E74C819FC83D3488 username=kim&age=20] 2023-07-10T21:21:38.623+09:00 ERROR 18224 --- [nio-8080-exec-1] o.a.c.c.C.[.[ localhost ].[/].[jsp] : Servlet.service() for servlet [jsp] in context with path [] threw exception [Unable to compile class for JSP: An error occurred at line: [14] in the generated java file: [C:\Users\user\AppData\Local\Temp\tomcat.8080.1494250641129783002\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.MemberRepository resolves to a package An error occurred at line: [15] in the generated java file: [C:\Users\user\AppData\Local\Temp\tomcat.8080.1494250641129783002\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.Member resolves to a package An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved to a type 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> Stacktrace:] with root cause org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: [14] in the generated java file: [C:\Users\user\AppData\Local\Temp\tomcat.8080.1494250641129783002\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.MemberRepository resolves to a package An error occurred at line: [15] in the generated java file: [C:\Users\user\AppData\Local\Temp\tomcat.8080.1494250641129783002\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.Member resolves to a package An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved to a type 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> Stacktrace: at org.apache.jasper.compiler.DefaultErrorHandler.javacError( DefaultErrorHandler.java:102 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.compiler.ErrorDispatcher.javacError( ErrorDispatcher.java:213 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.compiler.JDTCompiler.generateClass( JDTCompiler.java:513 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.compiler.Compiler.compile( Compiler.java:402 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.compiler.Compiler.compile( Compiler.java:372 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.compiler.Compiler.compile( Compiler.java:356 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.JspCompilationContext.compile( JspCompilationContext.java:603 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.servlet.JspServletWrapper.service( JspServletWrapper.java:396 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.servlet.JspServlet.serviceJspFile( JspServlet.java:380 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at org.apache.jasper.servlet.JspServlet.service( JspServlet.java:328 ) ~[tomcat-embed-jasper-10.1.8.jar:10.1.8] at jakarta.servlet.http.HttpServlet.service( HttpServlet.java:614 ) ~[jakarta.servlet-api-6.0.0.jar:6.0.0] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:205 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:149 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.websocket.server.WsFilter.doFilter( WsFilter.java:51 ) ~[tomcat-embed-websocket-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:174 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:149 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.springframework.web.filter.RequestContextFilter.doFilterInternal( RequestContextFilter.java:100 ) ~[spring-web-6.0.8.jar:6.0.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:116 ) ~[spring-web-6.0.8.jar:6.0.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:174 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:149 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.springframework.web.filter.FormContentFilter.doFilterInternal( FormContentFilter.java:93 ) ~[spring-web-6.0.8.jar:6.0.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:116 ) ~[spring-web-6.0.8.jar:6.0.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:174 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:149 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal( CharacterEncodingFilter.java:201 ) ~[spring-web-6.0.8.jar:6.0.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:116 ) ~[spring-web-6.0.8.jar:6.0.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:174 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:149 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:166 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:90 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.authenticator.AuthenticatorBase.invoke( AuthenticatorBase.java:482 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:115 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:93 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:74 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:341 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.coyote.http11.Http11Processor.service( Http11Processor.java:390 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.coyote.AbstractProcessorLight.process( AbstractProcessorLight.java:63 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process( AbstractProtocol.java:894 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.util.net .NioEndpoint$SocketProcessor.doRun( NioEndpoint.java:1741 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.util.net.SocketProcessorBase.run ( SocketProcessorBase.java:52 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1191 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:659 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run( TaskThread.java:61 ) ~[tomcat-embed-core-10.1.8.jar:10.1.8] at java.base/java.lang.Thread.run( Thread.java:833 ) ~[na:na] 2023-07-10T21:21:38.633+09:00 INFO 18224 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[ localhost ].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet' 2023-07-10T21:21:38.634+09:00 INFO 18224 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet' 2023-07-10T21:21:38.635+09:00 INFO 18224 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms 2023-07-10T21:21:38.743+09:00 DEBUG 18224 --- [nio-8080-exec-1] o.apache.coyote.http11.Http11Processor : Socket: [ org.apache.tomcat.util.net .NioEndpoint$NioSocketWrapper@53f4c2e: org.apache.tomcat.util.net .NioChannel@1e491a57:java.nio.channels.SocketChannel[connected local=/[0:0:0:0:0:0:0:1]:8080 remote=/[0:0:0:0:0:0:0:1]:64023]], Status in: [OPEN_READ], State out: [CLOSED]
1. 강의 내용과 관련된 질문인가요? 예 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 아니오 3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예 [질문 내용] 인텔리제이 한글꺠짐 해결하려고 아래의 블로그 보고 하라는대로 따라했는데 해결이 안됩니다 .. https://knoow.tistory.com/195 인텔리제이 설치 경로의 bin폴더로 가서 idea64.exe.vmotions 파일을 처음에 인텔리제이로 열어서 수정했다가 저장이 안되는 것 같길래 메모장으로 열어서 다음과 같이 코드 넣고 저장 눌렀습니다 근데 아이콘도 메모장으로 바뀌고 파일명도 idea64.exe 로 변해서(근데 파일 속성 보면 vmotions 파일은 맞았어요) 다시 idea64.exe.vmotions으로 파일 이름을 변경했어요 인텔리제이로 hello spring 프로젝트 열어서 help> edit custom VM options -Dfile.encoding=UTF-8 추가했구요 build.gradle 가서 아래처럼 코드도 추가했습니다 file > settings > File encodings 모든 설정을 다 UTF - 8 로 다 바꿨구요 EUC-KR로도 바꿔서 실행도 해봤습니다 근데도 자꾸 꺠져서 출력됩니다 어떻게 해야하나요 .. 흑흑
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. 안녕하세요. 서블릿으로 구현할때까지는 잘 실행 되었는데.. 스프링mvc 부터 자꾸 404가 뜹니다. 브라우저에서 입력하면 매핑된 process메서드는 실행을 하는데 modelAndView에서 에러가 나는거 같습니다. 맨 밑 사진은 디버깅해봤는데..class has no fields랍니다..modelAndView를 따로 처리를 해줘야 되는건가요? 아니면 다른걸 잘못하고 있는건가요..?
안녕하세요 섹션2 HTTP요청 데이터 -POST HTML Form 강의에서 hello-form에서 username과 age 를 입력하고 제출 버튼을 누르면 f12에서 이렇게 request-param을 확인하셨는데 저는 제출을 눌러도 이게 뜨지 않습니다. 그러나 콘솔에서는 getParameter()로 값을 정상적으로 출력을 하는데 f12에서는 왜 확인이 안될까요?
save.jsp 에서 화면에서 jsp가 제대로 등록되지 않은 같습니다. <에러코드> An error occurred at line: [14] in the generated java file: [C:\Users\ParkWonkyoung\AppData\Local\Temp\tomcat.8080.2915155530144798779\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.MemberRepository resolves to a package An error occurred at line: [15] in the generated java file: [C:\Users\ParkWonkyoung\AppData\Local\Temp\tomcat.8080.2915155530144798779\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.Member resolves to a package An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved to a type 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %> Stacktrace:] with root cause org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: [14] in the generated java file: [C:\Users\ParkWonkyoung\AppData\Local\Temp\tomcat.8080.2915155530144798779\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.MemberRepository resolves to a package An error occurred at line: [15] in the generated java file: [C:\Users\ParkWonkyoung\AppData\Local\Temp\tomcat.8080.2915155530144798779\work\Tomcat\ localhost \ROOT\org\apache\jsp\jsp\members\save_jsp.java] Only a type can be imported. hello.servlet.domain.member.Member resolves to a package An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved to a type 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [6] in the jsp file: [/jsp/members/save.jsp] MemberRepository cannot be resolved 3: <%@ page contentType="text/html;charset=UTF-8" language="java" %> 4: <% 5: // request, response 사용 가능 6: MemberRepository memberRepository = MemberRepository.getInstance(); 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); An error occurred at line: [10] in the jsp file: [/jsp/members/save.jsp] Member cannot be resolved to a type 7: System.out.println("save.jsp"); 8: String username = request.getParameter("username"); 9: int age = Integer.parseInt(request.getParameter("age")); 10: Member member = new Member(username, age); 11: System.out.println("member = " + member); 12: memberRepository.save (member); 13: %>
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] 강의를 듣다 의문점이 생겨 질문 드립니다. OrderDto는 JPA에서 생성된 객체가 아니고 직접 생성자로 만들어서 사용한 객체인데 왜 Hibernate5Module이 프록시 객체로 생각해서 null값을 반환하는지 모르겠습니다. 제가 긴시간 찾아보면서 생각한 이유는 이렇습니다. 강의 5분경 쯤에 api 호출시 Json에서 orderItems 가 null로 반환되는것을 보여주십니다. orderItems가 null로 반환되는것은 스프링이 string으로 응답을 보낼때 messageConverter가 json으로 변환해서 반환을합니다. 이때 orderItems가 JPA(Hibernate)에서 만든 프록시 객체로 되어있어 전강의에서 설정한 Hibernate5Module이 프록시 객체를 null로 바꾸기 때문에 orderItems가 null로 나타낸것으로 생각됩니다. 하지만 제가 디버깅 모드로 확인해본 결과 OrderDto안에 있는 orderItems는 프록시 객체가 아닌 실제로 생성된 객체였습니다.(OrderDto는 단순히 JPA가 관리 하지 않아서 당연하다고 생각합니다.) 강의 기준으로 orderItems 안에 있는 orderItem객체가 2개 존재하는데 orderItem객체는 JPA를 통해 생성된 객체이고 자세히 살펴보면 orderItem 안에 Item은 LAZY로딩으로 프록시 객체가 생성되어있습니다. 혹시몰라 Hibernate5Module을 끄고 실행한 결과 Item이 @JsonIgnore가 있으면 orderItems가 제대로 결과 값이 나오고 @JsonIgnore이 없으면 프록시 객체를 Json으로 변환하지 못해서 오류가 발생합니다. 그럼 Hibernate5Module는 엔티티 안에 객체의 값중 하나라도 프록시 객체가 있다면 다른 객체의 값이 있든 말든 그냥 null을 반환하는 걸까요?? 제가 이해한것이 맞는지 궁금해서 질문드립니다. 긴글 읽어주셔서 감사합니다.
