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미해결<M.B.I.T> 테스트 페이지 만들기! with Django
2번 문제에서 넘어가질 않습니다(강의 하단의 trouble shooting까지 확인한 상황)
강사님 강의를 잘 듣고 있던 와중에 문제가 발생하여 다시 글 남깁니다. 템플릿에 적용하기 전에는 2번에서 다음으로 잘 넘어갔는데, 템플릿을 적용한 후로는 2번에서 다음 버튼이 먹질 않습니다. <input type="radio" name="question-{{ question.number }}" id="choice-{{ choice.pk }}" value="{{ choice.developer.pk }}" /> 부분은 강의 초반에 제대로 적용해서 이 부분에 오류가 나진 않은 것 같습니다. 강의 하단의 trouble shooting 내용을 토대로 진행했을 때, 먼저 저는 데스크톱 크롬 100%인 상태임에도 되지 않고, $('html, body').animate({scrollTop: (700)}, 500); $('html, body').animate({scrollTop: (1400)}, 500); $('html, body').animate({scrollTop: (2100)}, 500); 이렇게 하면 1 -> 2 -> 3번으로 제대로 갑니다. form.js 코드를 해결방법에 있는 내용으로 변경해도 여전히 2번에서 멈춰있습니다ㅠㅠ 아래는 관련 소스코드입니다. form.html {% load static %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" type="text/css" href="{% static 'css/reset.css' %}"> <link rel="stylesheet" type="text/css" href="{% static 'css/form.css' %}"> <script src="https://code.jquery.com/jquery-3.5.1.js"></script> <title>나의 개발 유형찾기</title> </head> <body> <section id="survey"> <div class="wrapper"> <form id="form" action="/result/" method="post"> {% csrf_token %} {% for question in questions %} <div class="test"> <div class="question_container"> <h3 class="number">{{ question.number }}/{{ questions.count }}</h3> <h3 class="question">{{ question.counter }}</h3> </div> <div class="answer"> {% for choice in question.choice_set.all %} <div> <input type="radio" name="question-{{ question.number }}" id="choice-{{ choice.pk }}" value="{{ choice.developer.pk }}" /> <label for="choice-{{ choice.pk }}">{{ forloop.counter }}. {{ choice.content }}</label> </div> {% endfor %} </div> {% if not forloop.first %} <div class="btn_wrap btn_sort"> {% else %} <div class="btn_wrap"> {% endif %} {% if not forloop.first %} <button class="prev_btn">이전</button> {% endif %} {% if not forloop.last %} <button class="next_btn">다음</button> {% else %} <input type="submit" value="제출" class="submit_btn"/> {% endif %} </div> </div> {% endfor %} </form> </div> </section> <script type="text/javascript" src="{% static 'js/form.js' %}"></script> </body> </html> form.js // function scrollUp() { // const vheight = $('.test').height(); // $('html, body').animate({ // scrollTop: ((Math.ceil($(window).scrollTop() / vheight) - 1) * vheight) // }, 500); // }; // function scrollDown() { // const vheight = $('.test').height(); // $('html, body').animate({ // scrollTop: ((Math.floor($(window).scrollTop() / vheight) + 1) * vheight) // }, 500); // }; function scrollUp(top) { const vheight = $('.test').height(); const margin_top = parseInt($('#survey').css('margin-top'), 10); $('html, body').animate({ scrollTop: top - vheight - margin_top }, 500); }; function scrollDown(top) { const vheight = $('.test').height(); const margin_top = parseInt($('#survey').css('margin-top'), 10); $('html, body').animate({ scrollTop: vheight + top - margin_top }, 500); } $(function() { // $('.next_btn').click(function(e) { // let divs = $(this).parent().prev().children(); // let inputs = divs.find('input:checked'); // if(inputs.length < 1) { // alert('문항이 선택되지 않았습니다'); // return false; // } // e.preventDefault(); // scrollDown(); // }); // $('.prev_btn').click(function(e) { // e.preventDefault(); // scrollUp(); // }); $('.next_btn').click(function(e){ let divs = $(this).parent().prev().children(); let present_top = $(this).parent().parent()[0].offsetTop; let inputs = divs.find('input:checked'); if(inputs.length < 1) { alert('문항이 선택되지 않았습니다.'); return false; } e.preventDefault(); scrollDown(present_top); }); $('.prev_btn').click(function(e){ let present_top = $(this).parent().parent()[0].offsetTop; e.preventDefault(); scrollUp(present_top); }); $('#form').submit(function() { let radios = $('input[type=radio]:checked'); if(radios.length < 3) { alert('문항이 선택되지 않았습니다'); return false; } return true; }); $('html, body').animate({ scrollTop: 0 }, 500); }); 답변 기다리고 있겠습니다! 감사합니다.
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미해결실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
상품주문 테스트 코드 질문드립니다.
선생님 항상 좋은 강의 많은 도움이 되고있습니다. 감사합니다!! 우선 제 전체 코드는 다음주소에 (깃허브)에 올렸습니다. https://github.com/minkook92/jpahsop/tree/master/src 제 나름대로 상품주문 test-code를 작성하였으나, 오류가 납니다. 혹시 어디서 잘못 되었는지 봐 주시면 감사하겠습니다! package jpabook.jpashop.service; import jpabook.jpashop.domain.*; import jpabook.jpashop.domain.item.Book; import jpabook.jpashop.domain.item.Item; import jpabook.jpashop.repository.OrderRepository; import org.assertj.core.api.Assertions; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import org.springframework.transaction.annotation.Transactional; import javax.persistence.EntityManager; import static org.junit.Assert.*; @RunWith(SpringRunner.class) @SpringBootTest @Transactional public class OrderServiceTest { @Autowired MemberService memberService; @Autowired ItemService itemService; @Autowired OrderService orderService; @Test public void 상품주문() throws Exception { //given //멤버저장 Member member = new Member(); member.setName("kim"); member.setAddress(new Address("city", "street", "zipcode")); memberService.join(member); //책 저장 Book book = new Book(); book.setIsbn("12345"); book.setAuthor("kim"); book.setStockQuantity(100); book.setPrice(10000); book.setName("바람과함께 사라지다."); itemService.saveItem(book); //when //멤버 찾기 Member findMember = memberService.findOne(member.getId()); //아이템 찾기 Item findItem = itemService.findOne(book.getId()); //배달 정보 저장 Delivery delivery = new Delivery(); delivery.setStatus(DeliveryStatus.READY); delivery.setAddress(member.getAddress()); //주문 아이템 저장 OrderItem orderItem = OrderItem.createOrderItem(findItem, findItem.getPrice(), 10); //주문 생성 Order order = Order.createOrder(findMember, delivery, orderItem); //주문 찾기 Long orderId = orderService.order(order.getMember().getId(), order.getOrderItems().get(0).getId(), order.getOrderItems().get(0).getCount()); Order findOrder = orderService.findOne(orderId); //then //재고 수량 검증 , 100개의 stockQuantity에서 주문을 10개를 하였고, 이를 주문에 반영하였으니, 주문을 한다면 stockQuantity는 90개가 되어야 함. Assertions.assertThat(findOrder.getOrderItems().get(0).getCount()).isEqualTo(90); } @Test public void 주문취소() throws Exception { //given //when //then } @Test public void 상품주문_재고수량초과() throws Exception{ //given //when //then } } 오류 내용 2021-06-07 05:47:02.587 INFO 9712 --- [ main] o.s.t.c.transaction.TransactionContext : Began transaction (1) for test context [DefaultTestContext@3f67593e testClass = OrderServiceTest, testInstance = jpabook.jpashop.service.OrderServiceTest@17541204, testMethod = 상품주문@OrderServiceTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@1ab06251 testClass = OrderServiceTest, locations = '{}', classes = '{class jpabook.jpashop.JpashopApplication}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@394df057, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@6ab778a, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@58ea606c, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@63070bab, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@3098cf3b, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@1189dd52], 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@34001c5d]; rollback [true] 2021-06-07 05:47:03.188 DEBUG 9712 --- [ main] org.hibernate.SQL : select member0_.member_id as member_i1_2_, member0_.city as city2_2_, member0_.street as street3_2_, member0_.zipcode as zipcode4_2_, member0_.name as name5_2_ from member member0_ where member0_.name=? 2021-06-07 05:47:03.203 INFO 9712 --- [ main] p6spy : #1623012423203 | took 4ms | statement | connection 4| url jdbc:h2:mem:787fed49-3533-4ca4-b5e2-6e76bef929f6 select member0_.member_id as member_i1_2_, member0_.city as city2_2_, member0_.street as street3_2_, member0_.zipcode as zipcode4_2_, member0_.name as name5_2_ from member member0_ where member0_.name=? select member0_.member_id as member_i1_2_, member0_.city as city2_2_, member0_.street as street3_2_, member0_.zipcode as zipcode4_2_, member0_.name as name5_2_ from member member0_ where member0_.name='kim'; 2021-06-07 05:47:03.219 DEBUG 9712 --- [ main] org.hibernate.SQL : call next value for hibernate_sequence 2021-06-07 05:47:03.220 INFO 9712 --- [ main] p6spy : #1623012423220 | took 0ms | statement | connection 4| url jdbc:h2:mem:787fed49-3533-4ca4-b5e2-6e76bef929f6 call next value for hibernate_sequence call next value for hibernate_sequence; 2021-06-07 05:47:03.281 DEBUG 9712 --- [ main] org.hibernate.SQL : call next value for hibernate_sequence 2021-06-07 05:47:03.282 INFO 9712 --- [ main] p6spy : #1623012423282 | took 0ms | statement | connection 4| url jdbc:h2:mem:787fed49-3533-4ca4-b5e2-6e76bef929f6 call next value for hibernate_sequence call next value for hibernate_sequence; 2021-06-07 05:47:03.365 INFO 9712 --- [ main] p6spy : #1623012423365 | took 0ms | rollback | connection 4| url jdbc:h2:mem:787fed49-3533-4ca4-b5e2-6e76bef929f6 ; 2021-06-07 05:47:03.377 INFO 9712 --- [ main] o.s.t.c.transaction.TransactionContext : Rolled back transaction for test: [DefaultTestContext@3f67593e testClass = OrderServiceTest, testInstance = jpabook.jpashop.service.OrderServiceTest@17541204, testMethod = 상품주문@OrderServiceTest, testException = org.springframework.dao.InvalidDataAccessApiUsageException: id to load is required for loading; nested exception is java.lang.IllegalArgumentException: id to load is required for loading, mergedContextConfiguration = [WebMergedContextConfiguration@1ab06251 testClass = OrderServiceTest, locations = '{}', classes = '{class jpabook.jpashop.JpashopApplication}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@394df057, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@6ab778a, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@58ea606c, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@63070bab, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@3098cf3b, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@1189dd52], 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]] org.springframework.dao.InvalidDataAccessApiUsageException: id to load is required for loading; nested exception is java.lang.IllegalArgumentException: id to load is required for loading at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:374) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:235) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551) at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152) 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 jpabook.jpashop.repository.ItemRepository$$EnhancerBySpringCGLIB$$18b1a0a2.findOne(<generated>) at jpabook.jpashop.service.OrderService.order(OrderService.java:32) at jpabook.jpashop.service.OrderService$$FastClassBySpringCGLIB$$ad373727.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 jpabook.jpashop.service.OrderService$$EnhancerBySpringCGLIB$$da7a4323.order(<generated>) at jpabook.jpashop.service.OrderServiceTest.상품주문(OrderServiceTest.java:64) 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.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74) at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84) at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69) at com.intellij.rt.junit.IdeaTestRunner$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: java.lang.IllegalArgumentException: id to load is required for loading at org.hibernate.event.spi.LoadEvent.<init>(LoadEvent.java:96) at org.hibernate.event.spi.LoadEvent.<init>(LoadEvent.java:64) at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.doLoad(SessionImpl.java:2783) at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.lambda$load$1(SessionImpl.java:2767) at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.perform(SessionImpl.java:2723) at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2767) at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3322) at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3284) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) at com.sun.proxy.$Proxy96.find(Unknown Source) at jpabook.jpashop.repository.ItemRepository.findOne(ItemRepository.java:26) at jpabook.jpashop.repository.ItemRepository$$FastClassBySpringCGLIB$$dc3fed7a.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.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ... 48 more
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미해결자바(Java) 알고리즘 문제풀이 입문: 코딩테스트 대비
예제는 맞앗는데,채점시스템 오답으로 나오네요.ㅠㅠ 코드리뷰한번만 부탁드리겠습니다.
import java.util.*; public class Main{ public static void main(String[] args){ Scanner kb=new Scanner(System.in); int student,pos,len=kb.nextInt(), table[][] = new int[len][len],max=Integer.MIN_VALUE,currMax,answer=0; //입력받기 for(int i=0;i<len;i++)for(int j=0;j<len;j++)table[i][j]=kb.nextInt(); //찾기 for(int stdnum=0;stdnum<len;stdnum++){ //check배열을 만들어, 같은반이었던 학생은 true로 변경 boolean check[] = new boolean[len]; for(int grade=0;grade<len;grade++){ student=table[stdnum][grade]; pos=0; while(pos<len){ if(table[pos][grade]==student)check[pos]=true; pos++; } } //같은반이었던 학생 수 만큼 currMax에 더하며 카운트.. currMax=0; for(int i=0;i<len;i++)if(check[i])currMax++; //currMax가 기존Max보다 크면 answer(반장번호)변경; if(currMax>max){ max=currMax; answer=stdnum+1; } } System.out.println(answer); }; };
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미해결[리뉴얼] React로 NodeBird SNS 만들기
JavaScript heap out of memory 문제
안녕하세요 제로초님 노드버드 후 새로운 프로젝트 중 갑자기 메모리 에러가 발생하여 구글링 해봐두 원인을 알 수 가 없어서 이렇게 도움을 요청합니다ㅜ https://github.com/wdudtlrw78/devlog
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미해결스프링 핵심 원리 - 기본편
용어 질문드립니다.
회원 도메인, 주문과 할인 도메인 설계 등등 여기서 '도메인' 이라는 단어는 어떤 의미를 가지고 있나요?
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미해결풀스택을 위한 도커와 최신 서버 기술(리눅스, nginx, AWS, HTTPS, 배포까지) [풀스택 Part3]
ubuntu에서 도커 설치는 왜 복잡한가요?
다른 강의에서 도커 설치를 하는 것을 보고 갑자기 궁금해서 질문드립니다. centos 환경에서 도커설치시 yum install docker 이렇게 간단하게 설치하던데 ubuntu도 그냥 sudo apt-get install docker 이렇게 안하고 강의처럼 복잡?하게 설치하는 이유가 있을까요?
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미해결실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
ItemServiceImpl.java 클래스를 만들지 않은 이유
강사님 안녕하세요, 강의를 듣다 궁금한 점이 있어서 글 올립니다. 보통 ItemService 같은 서비스 클래스는 구현체를 만드는 것으로 알고 있는데, 혹시 강의처럼 ItemServiceImpl 클래스를 안만들고 바로 구현해도 크게 문제되지는 않는건지 궁금합니다. (JPA라서 그런건지 아니면 예제이기 때문에 단순화 시키신건지 등 ..) 답변 부탁드리겠습니다! 감사합니다!!
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해결됨[React 1부] 만들고 비교하며 학습하는 React
handleChangeInput에서 handleReset함수를 return하는 이유가 궁금합니다.
handleChangeInput 함수에서 handleReset 함수를 실행하는 것은 이해가 되는데요. 왜 return 구문을 쓰신건지 잘 모르겠습니다 ^^;; handleChangeInput 함수 자체도 별도의 return을 해주는 것이 없는것 같아서요. handleChangeInput(e) { const searchKeyword = e.target.value; if (searchKeyword.length <= 0) { return this.handleReset(); // 이 부분 입니다! } this.setState({ searchKeyword }); }
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미해결예제로 배우는 스프링 입문 (개정판)
maven plugin 에러
[INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 28.021 s [INFO] Finished at: 2021-06-06T23:21:18+09:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test (default-test) on project spring-petclinic: There are test failures. [ERROR] [ERROR] Please refer to C:\Users\User\JavaProject\spring-petclinic\target\surefire-reports for the individual test results. [ERROR] Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream. [ERROR] The forked VM terminated without properly saying goodbye. VM crash or System.exit called? [ERROR] Command was cmd.exe /X /C ""C:\Program Files\Java\jdk-16\bin\java" -javaagent:C:\\Users\\User\\.m2\\repository\\org\\jacoco\\org.jacoco.agent\\0.8.5\\org.jacoco.agent-0.8.5-run time.jar=destfile=C:\\Users\\User\\JavaProject\\spring-petclinic\\target\\jacoco.exec -jar C:\Users\User\AppData\Local\Temp\surefire13409109640807335750\surefirebooter17835205775616496 159.jar C:\Users\User\AppData\Local\Temp\surefire13409109640807335750 2021-06-06T23-21-16_829-jvmRun1 surefire6151291350789010891tmp surefire_012945399030963262607tmp" [ERROR] Error occurred in starting fork, check output in log [ERROR] Process Exit Code: 1 [ERROR] org.apache.maven.surefire.booter.SurefireBooterForkException: The forked VM terminated without properly saying goodbye. VM crash or System.exit called? [ERROR] Command was cmd.exe /X /C ""C:\Program Files\Java\jdk-16\bin\java" -javaagent:C:\\Users\\User\\.m2\\repository\\org\\jacoco\\org.jacoco.agent\\0.8.5\\org.jacoco.agent-0.8.5-run time.jar=destfile=C:\\Users\\User\\JavaProject\\spring-petclinic\\target\\jacoco.exec -jar C:\Users\User\AppData\Local\Temp\surefire13409109640807335750\surefirebooter17835205775616496 159.jar C:\Users\User\AppData\Local\Temp\surefire13409109640807335750 2021-06-06T23-21-16_829-jvmRun1 surefire6151291350789010891tmp surefire_012945399030963262607tmp" [ERROR] Error occurred in starting fork, check output in log [ERROR] Process Exit Code: 1 [ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.fork(ForkStarter.java:669) [ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:282) [ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:245) [ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1183) [ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:1011) [ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:857) [ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137) [ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210) [ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156) [ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148) [ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117) [ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81) [ERROR] at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56) [ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) [ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305) [ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192) [ERROR] at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105) [ERROR] at org.apache.maven.cli.MavenCli.execute(MavenCli.java:957) [ERROR] at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:289) [ERROR] at org.apache.maven.cli.MavenCli.main(MavenCli.java:193) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) [ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:567) [ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282) [ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225) [ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406) [ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) [ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:567) [ERROR] at org.apache.maven.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:39) [ERROR] at org.apache.maven.wrapper.WrapperExecutor.execute(WrapperExecutor.java:122) [ERROR] at org.apache.maven.wrapper.MavenWrapperMain.main(MavenWrapperMain.java:61) [ERROR] [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException 안녕하세요. 프로젝트를 git clone한 뒤 mvnw package 명령어를 실행했는데 다음과 같은 에러가 발생했네요. JDK16버전을 지원을 하지 않나해서 JDK 11로 재설정하고 재실행했는데도 동일한 에러가 발생하네요.
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미해결Do it! 자바 프로그래밍 입문 with 은종쌤
이해가 잘 안가서요ㅠㅠ
굳이 여기서 빨간 박스 퍼블릭 스태틱을 만드는 이유가 뭔가요?? sum 값은 위 대로만 해도 40이 나오는데ㅠㅠ....
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미해결눈떠보니 코딩테스트 전날
[긴급질문]노션접근권한..........
수업자료에 있는 링크는 만료되었고.. 어떤분이 질문해주신 글에서 노션링크를 알려주셨길래 들어갔는데 접근권한이 없는지 목차만 보이고 수업자료를 볼수가 없네요... 어쩌죠 아.. 불편하네요
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미해결자바스크립트 알고리즘 문제풀이 입문(코딩테스트 대비)
이 강의 들으면서 프로그래머스 1~2단계 풀려고합니다. (코딩테스트준비)
안녕하세요! 기본문제는 직접풀고 강의까지 들었습니다! 이번에 자료구조, 알고리즘을 공부한지 얼마 안됬는데, 코딩테스트 까지 얼마 남지 않았습니다.(3주~한달) 테스트는 프로그래머스로 진행된다고하는데,테스트 난이도가 프로그래머스 1~2 정도라고합니다. 어떤식으로 공부를 진행해야 빠르게 준비 할수 있을까요!! 강의를 먼저 들으면서, 각 강의에 해당되는 주제를 프로그래머스 문제에서 찾아서 푸려고하는데;; 개념 공부도 따로 해야하겠죠?ㅠㅠ 조언 부탁드립니다...
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미해결딥러닝 CNN 완벽 가이드 - TFKeras 버전
섹션3에서 fashion-mnist 데이터셋이 로드되지 않습니다.
해당 강의에서 다음 코드를 수행하였습니다. from tensorflow.keras.datasets import fashion_mnist # 전체 6만개 데이터 중, 5만개는 학습 데이터용, 1만개는 테스트 데이터용으로 분리 (train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data() 하지만 아래와 같은 에러(exception) 이 발생하였고, 다음 셀 역시 수행되지 않습니다. 이런 경우 어떻게 대처해야할지 알려주시면 감사하겠습니다. --------------------------------------------------------------------------- gaierror Traceback (most recent call last) /opt/conda/lib/python3.7/urllib/request.py in do_open(self, http_class, req, **http_conn_args) 1349 h.request(req.get_method(), req.selector, req.data, headers, -> 1350 encode_chunked=req.has_header('Transfer-encoding')) 1351 except OSError as err: # timeout error /opt/conda/lib/python3.7/http/client.py in request(self, method, url, body, headers, encode_chunked) 1276 """Send a complete request to the server.""" -> 1277 self._send_request(method, url, body, headers, encode_chunked) 1278 /opt/conda/lib/python3.7/http/client.py in _send_request(self, method, url, body, headers, encode_chunked) 1322 body = _encode(body, 'body') -> 1323 self.endheaders(body, encode_chunked=encode_chunked) 1324 /opt/conda/lib/python3.7/http/client.py in endheaders(self, message_body, encode_chunked) 1271 raise CannotSendHeader() -> 1272 self._send_output(message_body, encode_chunked=encode_chunked) 1273 /opt/conda/lib/python3.7/http/client.py in _send_output(self, message_body, encode_chunked) 1031 del self._buffer[:] -> 1032 self.send(msg) 1033 /opt/conda/lib/python3.7/http/client.py in send(self, data) 971 if self.auto_open: --> 972 self.connect() 973 else: /opt/conda/lib/python3.7/http/client.py in connect(self) 1438 -> 1439 super().connect() 1440 /opt/conda/lib/python3.7/http/client.py in connect(self) 943 self.sock = self._create_connection( --> 944 (self.host,self.port), self.timeout, self.source_address) 945 self.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1) /opt/conda/lib/python3.7/socket.py in create_connection(address, timeout, source_address) 706 err = None --> 707 for res in getaddrinfo(host, port, 0, SOCK_STREAM): 708 af, socktype, proto, canonname, sa = res /opt/conda/lib/python3.7/socket.py in getaddrinfo(host, port, family, type, proto, flags) 751 addrlist = [] --> 752 for res in _socket.getaddrinfo(host, port, family, type, proto, flags): 753 af, socktype, proto, canonname, sa = res gaierror: [Errno -3] Temporary failure in name resolution During handling of the above exception, another exception occurred: URLError Traceback (most recent call last) /opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/utils/data_utils.py in get_file(fname, origin, untar, md5_hash, file_hash, cache_subdir, hash_algorithm, extract, archive_format, cache_dir) 274 try: --> 275 urlretrieve(origin, fpath, dl_progress) 276 except HTTPError as e: /opt/conda/lib/python3.7/urllib/request.py in urlretrieve(url, filename, reporthook, data) 246 --> 247 with contextlib.closing(urlopen(url, data)) as fp: 248 headers = fp.info() /opt/conda/lib/python3.7/urllib/request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context) 221 opener = _opener --> 222 return opener.open(url, data, timeout) 223 /opt/conda/lib/python3.7/urllib/request.py in open(self, fullurl, data, timeout) 524 --> 525 response = self._open(req, data) 526 /opt/conda/lib/python3.7/urllib/request.py in _open(self, req, data) 542 result = self._call_chain(self.handle_open, protocol, protocol + --> 543 '_open', req) 544 if result: /opt/conda/lib/python3.7/urllib/request.py in _call_chain(self, chain, kind, meth_name, *args) 502 func = getattr(handler, meth_name) --> 503 result = func(*args) 504 if result is not None: /opt/conda/lib/python3.7/urllib/request.py in https_open(self, req) 1392 return self.do_open(http.client.HTTPSConnection, req, -> 1393 context=self._context, check_hostname=self._check_hostname) 1394 /opt/conda/lib/python3.7/urllib/request.py in do_open(self, http_class, req, **http_conn_args) 1351 except OSError as err: # timeout error -> 1352 raise URLError(err) 1353 r = h.getresponse() URLError: <urlopen error [Errno -3] Temporary failure in name resolution> During handling of the above exception, another exception occurred: Exception Traceback (most recent call last) <ipython-input-26-8cfb83a588da> in <module> 3 4 # 전체 6만개 데이터 중, 5만개는 학습 데이터용, 1만개는 테스트 데이터용으로 분리 ----> 5 (train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data() 6 7 # image size는 28x28의 grayscale 2차원 데이터 /opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/datasets/fashion_mnist.py in load_data() 73 paths = [] 74 for fname in files: ---> 75 paths.append(get_file(fname, origin=base + fname, cache_subdir=dirname)) 76 77 with gzip.open(paths[0], 'rb') as lbpath: /opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/utils/data_utils.py in get_file(fname, origin, untar, md5_hash, file_hash, cache_subdir, hash_algorithm, extract, archive_format, cache_dir) 277 raise Exception(error_msg.format(origin, e.code, e.msg)) 278 except URLError as e: --> 279 raise Exception(error_msg.format(origin, e.errno, e.reason)) 280 except (Exception, KeyboardInterrupt) as e: 281 if os.path.exists(fpath): Exception: URL fetch failure on https://storage.googleapis.com/tensorflow/tf-keras-datasets/train-labels-idx1-ubyte.gz: None -- [Errno -3] Temporary failure in name resolution
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미해결초보를 위한 쿠버네티스 안내서
minikube version 하면 systax error가 있다고 나옵니다
강의를 따라 도커 설치, minikube 설치 후 minikube version 명령어로 설치가 잘 되었나 확인했는데 "/usr/local/bin/minikube: line 1: syntax error near unexpected token '<' " 에러가 납니다 어떻게 해결하면 좋을지 잘 모르겠습니다. (vm ubuntu 20.04 버전 사용중입니다.)
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미해결디지털 포렌식 (Digital Forensic) 전문가 과정
vol 파일 실행오류
Volatility Foundation Volatility Framework 2.4 *** Failed to import volatility.plugins.registry.dumpregistry (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.malware.svcscan (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.registry.lsadump (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로 그램이 아닙니다.) *** Failed to import volatility.plugins.apihooksdeep (NameError: name 'distorm3' is not defined) *** Failed to import volatility.plugins.registry.shellbags (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프 로그램이 아닙니다.) *** Failed to import volatility.plugins.registry.auditpol (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.ssdt (NameError: name 'distorm3' is not defined) *** Failed to import volatility.plugins.registry.registryapi (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.trustrecords (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램 이 아닙니다.) *** Failed to import volatility.plugins.mac.apihooks (ImportError: Error loading the diStorm dynamic library (or cannot load library into process).) *** Failed to import volatility.plugins.envars (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.registry.userassist (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.chromehistory (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.evtlogs (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아 닙니다.) *** Failed to import volatility.plugins.uninstallinfo (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.malware.threads (NameError: name 'distorm3' is not defined) *** Failed to import volatility.plugins.mac.apihooks_kernel (ImportError: Error loading the diStorm dynamic library (or cannot load library into process).) *** Failed to import volatility.plugins.getservicesids (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그 램이 아닙니다.) *** Failed to import volatility.plugins.mimikatz (ImportError: No module named construct) *** Failed to import volatility.plugins.registry.shimcache (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프 로그램이 아닙니다.) *** Failed to import volatility.plugins.linux.netscan (ImportError: No module named yara) *** Failed to import volatility.plugins.timeliner (ImportError: DLL load failed: %1은(는) 올바른 Win32 응용 프로그램이 아닙니다.) *** Failed to import volatility.plugins.malware.apihooks (NameError: name 'distorm3' is not defined) 이런 문구들이 반복적으로 나오면서 vol.py 가 꺼짐니다 어떻게 해결해야 하나요?
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미해결자바 ORM 표준 JPA 프로그래밍 - 기본편
일대다 양방향
안녕하세요 개인적으로 궁금한게 있어서 질문드립니다 ! 일대다 양방향을 위하여 보여주신 --> @JoinColumn(name ="TEAM_ID",insertable = false , updatable = false) 방법으로 실무에서 실제로도 많이 쓰이나요 !?
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해결됨[C#과 유니티로 만드는 MMORPG 게임 개발 시리즈] Part3: 유니티 엔진
gridPanel에서 UI_Inven_Item Destory 중 오류 발생
안녕하세요 루키즈님. 오류가 발생했는데, 해결되지 않아 질문 드립니다. NullReferenceException: Object reference not set to an instance of an object UI_Inven.Init () (at Assets/Scripts/UI/Scene/UI_Inven.cs:26) UI_Inven.Start () (at Assets/Scripts/UI/Scene/UI_Inven.cs:14) 현재 아래와 같은 오류가 발생했고, 디버그 모드를 통해 기존에 있던 UI_Inven_Item을 Destory 하는 중에 발생하고 있다는 것을 알게 되었습니다. public override void Init() { base.Init(); Bind<GameObject>(typeof(GameObjects)); GameObject gridPanel = Get<GameObject>( (int)GameObjects.GridPanel); // 있던 거 삭제 foreach (Transform child in gridPanel.transform) { // 내 트랜스 폼이 들고 있는 모든 자식들을 순회를 하는 코드 Managers.Resource.Destroy(child.gameObject); } //// 실제 인벤토리 정보를 참고해서 //for(int i =0; i< 8; i++) //{ // GameObject item = Managers.Resource.Instantiate("UI/Scene/UI_Inven_Item"); // item.transform.SetParent(gridPanel.transform); // 부모님 지정 // UI_Inven_Item invenitem = Util.GetOrAddComponent<UI_Inven_Item>(item); // invenitem.SetInfo("Bind"); //} } 혹시 원인을 알 수 있을 까요 ? 감사합니다.
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미해결스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
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회사에서나 학원에서나 배울때는 @Autowired private MemberService memberService; 이렇게 많이 썼습니다. 근데 강사님 경우에는 생성자에다가 쓰는걸 권유 하는것 같은데 이유를 초등학생 수준으로 알고 싶습니다. 생성자를 뜻을 모르는게 아닌게 언제 무엇을 위해서 쓰는지 궁금합니다.
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CIDR 질문드립니다!
안녕하세요! 1. VPC 생성할 때 IPv4 CIDR를 정하는 기준 있나요?? AWS 에서는 10.0.0.0/16, 172.16.0.0/16, 192.168.0.0/24 등을 사용할 수 있다고 하셨는데 제가 VPC를 구현한다고 했을 때 어떤 CIDR 블록을 사용해야 하는지 모르겠습니다... 강사님께서는 각 IP Address 대역에서 특정 IP를 선택하는 기준을 알고계실 것 같아서 이렇게 여쭤봅니다! 2. VPC를 선택할 때 옵션으로 tenancy(기본 vs 전용)이 있던데 혹시 이 차이가 무엇인지 알려주실 수 있을까요?? 감사합니다!
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체크포인드와 로그를 찍는다고 하셨는데 이 둘이 무엇을 뜻하나요?
