172만명의 커뮤니티!! 함께 토론해봐요.
미해결
재고시스템으로 알아보는 동시성이슈 해결방법
test가 정상으로 처리되어 redisson을 추가하여 test하였습니다. RedissonLockStockFacadeTest는 이상이 없는데 LettuceLockStockFacadeTest를 재시도 한 결과 실패가 됩니다. 원인을 찾아보려고 다 다시 만들어봤지만 동일한 이슈가 발생하여습니다. 무엇이 문제일까요? redisson의 종속성을 삭제하고 돌리면 이상이 없음을 확인하였습니다. LettuceLockStockFacade 컴포넌트 와 RedissonLockStockFacade 컴포넌트는 함께 사용할 수 는 없나요? 또한 그 이유가 무엇인가요?
해결됨
파이썬/장고 웹서비스 개발 완벽 가이드 with 리액트
지금은 pickle에서 장고 모델 지원되는거 같습니다!! json은 여전히 Not Serializable 에러 뜹니다 신기해서 공유드립니다
미해결
스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
다음과 같은 오류로 구글링 한 결과 구글링에서 위 두가지 방법을 알려줘서 했더니 그래도 오류가 나서 문의드립니다..ㅜㅜ
미해결
스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
build.gradle를 오픈하자마자 다음과 같은 오류가 뜹니다ㅜㅜ 자바는 11버전 설치했고 강의 제일 처음, build.gradle부터 오픈하자마자 저런 오류가 났고 아무것도 안건들었습니다. <오류코드>- 일부만 가져왔습니다. A problem occurred configuring root project 'hello-spring'. > Could not resolve all files for configuration ':classpath'. > Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.0.1. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.0.1 > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.0.1 was found. The consumer was configured to find a runtime of a library compatible with Java 11, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.6' but: - Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.1 declares a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 11 - Other compatible attribute: - Doesn't say anything about org.gradle.plugin.api-version (required '7.6') - Variant 'javadocElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.1 declares a runtime of a component, and its dependencies declared externally: - Incompatible because this component declares documentation and the consumer needed a library - Other compatible attributes: - Doesn't say anything about its target Java version (required compatibility with Java 11) - Doesn't say anything about its elements (required them packaged as a jar) - Doesn't say anything about org.gradle.plugin.api-version (required '7.6') - Variant 'mavenOptionalApiElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.1 declares a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 11 - Other compatible attribute: - Doesn't say anything about org.gradle.plugin.api-version (required '7.6') - Variant 'mavenOptionalRuntimeElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.1 declares a runtime of a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 11 - Other compatible attribute: - Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
미해결
자바 ORM 표준 JPA 프로그래밍 - 기본편
질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [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] 안녕하세요 16:29 질문입니다. <property name="hibernate.jdbc.batch_size" value="10"/> 이 부분이 햇갈립니다.. 이걸 하냐 안하냐 차이가 (쓰기지연시) 위 설정을 하면 DB 커넥션 한번에 10개의 쿼리를 보내준다는거고 위 설정을 안하면 쓰기지연 모드가 발동시 10번의 커넥션이 이루어 진다고 생각하면 되나요 ??
미해결
나도코딩의 자바 기본편 - 풀코스 (20시간)
요즘 공부한 내용 블로그에 작성하면서 공부하고 있는데 혹시 저작권같은 문제가 있을까봐 여쭤봅니다.. 추가로 혹시 스프링 강의 올리실 계획은 있으신지도 궁금합니다
해결됨
파이썬/장고 웹서비스 개발 완벽 가이드 with 리액트
윈도우11 home을 사용하고있고 C:\html 경로에서 docker run 명렁어를 입력하였습니다. 혹시 틀린 부분이 있을까요? 위 방법으로 해결은 되었습니다. 다만 무슨차이가 있는것이고 왜 문제가 발생한지 모르겠어요 그리고 또하나 질문이 있습니다. docker run으로 실행하였을때 위에 이미지 처럼 뜨게되는데 이 상태에서 컨트롤 + c / 컨트롤 + d를 입력해도 명령이 종료가 되지않는데 어떻게 종료할 수 있을까요?
미해결
더 자바, 애플리케이션을 테스트하는 다양한 방법
안녕하세요. 올려주시는 강의 잘듣고 도움 많이 받아 항상 감사드립니다. @Transactional의 isolation, propagation 옵션에 대한 공부를 위한 학습 테스트를 작성해보고 싶은데요. (실제 업무에서도 동시성과 관련된 테스트 커버리지를 향상시키고 싶습니다) 두 개의 쓰레드가 하나의 인스턴스에 동시에 접근하는 케이스에 대한 테스트를 작성하고 싶습니다. TransactionManager를 직접 핸들링하는건 올바른 방법은 아닐 것이라고 생각하는데, 테스트 코드 작성 단계에서 동시성 테스트를 지원하는 기능이 있을까요? JUnit5나 Mockito 라이브러리만을 활용해서 해결할 수 있는 방법이 있을지 궁금하여 질문드립니다!
미해결
초보를 위한 도커 안내서
자꾸 데이터베이스가 에러 나는데 뭐 때문인지 도무지 알 수가 없습니다...
미해결
Spring Cloud로 개발하는 마이크로서비스 애플리케이션(MSA)
안녕하세요, 로컬에서 테스트 마치고 도커로 프로비저닝 작업하고 있는 중에 이슈가 생겨 문의드립니다. // Docker image build docker build --tag msa-api-gateway:1.0 . // Docker container run docker run -d -p 8000:8000 --network msa-network \ -e "spring.cloud.config.uri=http://config-server:8888" \ -e "spring.rabbitmq.host=rabbitmq" \ -e "eureka.client.serviceUrl.defaultZone=http://service-discovery:8761/" \ --name api-gateway \ msa-api-gateway:1.0 위 커맨드로 api-gateway 도커 이미지 빌드 후 실행시 로그를 보니 connection failed 이슈가 발생해서 원인을 확인했는데요, -e 옵션으로 준 eureka.client.serviceUrl.defaultZone= http://service-discovery:8761/ 이 반영이 안되고 기존 application.yml에 정의되어 있는 localhost:8761/eureka가 호출되어 문제가 되는 것으로 확인됩니다. (application.yml 내에서 직접 defaultZone 수정하니깐 정상 동작됩니다. 또 확인차 application.yml에선 service-discovery로 하고 -e 옵션으로 localhost로 설정하여 의도적으로 에러를 발생시키려고 했는데, 역시나 반영이 안되고 정상적으로 동작되었습니다.) 참고로 application.yml은 별도 github에 정의되어 있고 config server로 가져오고 있는데요, 우선순위같은게 있을까요? 도움 부탁드립니다. (추가) 기존에 application.yml에 spring.rabbitmq.host:127 .0.0.1 로 되어있는 것에 -e 옵션으로 rabbitmq로 실행할 때도 반영이 안되네욥ㅠ application.yml에서 직접 rabbitmq로 수정해줘야 동작합니다. Config github 내에서 관리하는 api-gateway-server.yml 입니다. server: port: 8000 eureka: client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://service-discovery:8761/eureka # http://localhost:8761/eureka spring: application: name: api-gateway-server rabbitmq: # Spring Cloud Bus 적용을 위한 RabbitMQ host: rabbitmq #127.0.0.1 port: 5672 # rabbitmq admin port는 15672 username: guest password: guest cloud: gateway: default-filters: - name: GlobalFilter args: baseMessage: Spring Cloud Gateway Global Filter preLogger: true postLogger: true routes: - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/login # 로그인 - Method=POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/users # 회원가입 - Method=POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/actuator/** - Method=GET, POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/** - Method=GET filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - AuthorizationHeaderFilter - id: order-service uri: lb://ORDER-SERVICE predicates: - Path=/order-service/** - Method=GET,POST filters: - RemoveRequestHeader=Cookie - RewritePath=/order-service/(?<segment>.*), /$\{segment} - id: catalog-service uri: lb://CATALOG-SERVICE predicates: - Path=/catalog-service/** - Method=GET,POST filters: - RemoveRequestHeader=Cookie - RewritePath=/catalog-service/(?<segment>.*), /$\{segment} management: # springboot actuator(운영중인 어플리케이션 모니터링 기능) 옵션 설정 endpoints: web: exposure: include: refresh, health, beans, httptrace, info, busrefresh token: # User-service Spring Security 인증토큰 expiration_time: 86400000 secret: userTokenForMSASkeletonTemplateHS256LongerThan256Bytes 혹시 몰라 도커 에러 메세지 남깁니다. . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.7.5) 2022-12-28 20:50:19.284 INFO 1 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://config-server:8888 2022-12-28 20:50:19.697 INFO 1 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=api-gateway-server, profiles=[default], label=null, version=32b9a3dfd58bb8bb5ef5e7a412b2433fc2d94791, state=null 2022-12-28 20:50:19.699 INFO 1 --- [ main] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-configClient'}, BootstrapPropertySource {name='bootstrapProperties-https://github.daumkakao.com/ch-svc-dev2/template-cloud-config/api-gateway-server/api-gateway-server.yml'}] 2022-12-28 20:50:19.708 INFO 1 --- [ main] c.a.ApiGatewayApplication : No active profile set, falling back to 1 default profile: "default" 2022-12-28 20:50:20.482 INFO 1 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created. 2022-12-28 20:50:20.492 INFO 1 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created. 2022-12-28 20:50:20.571 INFO 1 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=5f2180db-75bc-34c4-8dcd-bd49c1d7cf8d 2022-12-28 20:50:20.633 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.637 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationChannelResolver' of type [org.springframework.integration.support.channel.BeanFactoryChannelResolver] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.646 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.647 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.648 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'reactorDeferringLoadBalancerExchangeFilterFunction' of type [org.springframework.cloud.client.loadbalancer.reactive.DeferringLoadBalancerExchangeFilterFunction] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [After] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Before] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Between] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Cookie] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Header] 2022-12-28 20:50:21.348 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Host] 2022-12-28 20:50:21.351 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Method] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Path] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Query] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [ReadBody] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [RemoteAddr] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [XForwardedRemoteAddr] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Weight] 2022-12-28 20:50:21.358 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [CloudFoundryRouteService] 2022-12-28 20:50:21.824 INFO 1 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 6 endpoint(s) beneath base path '/actuator' 2022-12-28 20:50:22.059 INFO 1 --- [ main] o.s.c.s.m.DirectWithAttributesChannel : Channel 'application-1.springCloudBusInput' has 1 subscriber(s). 2022-12-28 20:50:22.142 INFO 1 --- [ main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses RestTemplate. 2022-12-28 20:50:22.221 WARN 1 --- [ main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. While this cache implementation is useful for development and tests, it's recommended to use Caffeine cache in production.You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath. 2022-12-28 20:50:22.274 INFO 1 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel 2022-12-28 20:50:22.275 INFO 1 --- [ main] o.s.i.channel.PublishSubscribeChannel : Channel 'application-1.errorChannel' has 1 subscriber(s). 2022-12-28 20:50:22.275 INFO 1 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean '_org.springframework.integration.errorLogger' 2022-12-28 20:50:22.284 INFO 1 --- [ main] o.s.c.n.eureka.InstanceInfoFactory : Setting initial instance status as: STARTING 2022-12-28 20:50:22.353 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initializing Eureka in region us-east-1 2022-12-28 20:50:22.358 INFO 1 --- [ main] c.n.d.s.r.aws.ConfigClusterResolver : Resolving eureka endpoints via configuration 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Disable delta property : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Single vip registry refresh property : null 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Force full registry fetch : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application is null : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application version is -1: true 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server 2022-12-28 20:50:22.542 INFO 1 --- [ main] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplicationsInternal(RestTemplateEurekaHttpClient.java:145) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplications(RestTemplateEurekaHttpClient.java:135) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:441) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:283) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:279) at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:66) at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:295) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) 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$1(AbstractBeanFactory.java:374) at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:376) at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:179) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getTargetObject(EurekaRegistration.java:127) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getEurekaClient(EurekaRegistration.java:115) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:485) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration$$EnhancerBySpringCGLIB$$e271b02f.getEurekaClient(<generated>) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:54) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:38) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:83) at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) at com.apigatewayserver.ApiGatewayApplication.main(ApiGatewayApplication.java:20) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 76 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 89 more 2022-12-28 20:50:22.543 WARN 1 --- [ main] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:22.543 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to refresh its cache! This periodic background refresh will be retried in 30 seconds. status = Cannot execute request on any known server stacktrace = com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:441) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:283) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:279) at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:66) at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:295) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) 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$1(AbstractBeanFactory.java:374) at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:376) at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:179) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getTargetObject(EurekaRegistration.java:127) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getEurekaClient(EurekaRegistration.java:115) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:485) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration$$EnhancerBySpringCGLIB$$e271b02f.getEurekaClient(<generated>) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:54) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:38) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:83) at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) at com.apigatewayserver.ApiGatewayApplication.main(ApiGatewayApplication.java:20) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) 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.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) 2022-12-28 20:50:22.543 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from primary servers failed 2022-12-28 20:50:22.544 WARN 1 --- [ main] com.netflix.discovery.DiscoveryClient : Using default backup registry implementation which does not do anything. 2022-12-28 20:50:22.544 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from backup servers failed 2022-12-28 20:50:22.548 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Starting heartbeat executor: renew interval is: 30 2022-12-28 20:50:22.555 INFO 1 --- [ main] c.n.discovery.InstanceInfoReplicator : InstanceInfoReplicator onDemand update allowed rate per min is 4 2022-12-28 20:50:22.564 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Discovery Client initialized at timestamp 1672260622563 with initial instances count: 0 2022-12-28 20:50:22.566 INFO 1 --- [ main] o.s.c.n.e.s.EurekaServiceRegistry : Registering application API-GATEWAY-SERVER with eureka with status UP 2022-12-28 20:50:22.568 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Saw local status change event StatusChangeEvent [timestamp=1672260622568, current=UP, previous=STARTING] 2022-12-28 20:50:22.569 INFO 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000: registering service... 2022-12-28 20:50:22.613 INFO 1 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.register(RestTemplateEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 22 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 35 more 2022-12-28 20:50:22.613 WARN 1 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:22.616 WARN 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - registration failed Cannot execute request on any known server com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:22.617 WARN 1 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator : There was a problem with the instance info replicator com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:22.772 INFO 1 --- [ main] c.s.b.r.p.RabbitExchangeQueueProvisioner : declaring queue for inbound: springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A, bound to: springCloudBus 2022-12-28 20:50:22.775 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.781 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.783 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.801 INFO 1 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A.errors' has 1 subscriber(s). 2022-12-28 20:50:22.803 INFO 1 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A.errors' has 2 subscriber(s). 2022-12-28 20:50:22.804 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.804 INFO 1 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused 2022-12-28 20:50:22.814 INFO 1 --- [g64rsAotJWA4A-1] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.815 INFO 1 --- [ main] o.s.i.a.i.AmqpInboundChannelAdapter : started bean 'inbound.springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A' 2022-12-28 20:50:22.931 INFO 1 --- [ main] o.s.b.web.embedded.netty.NettyWebServer : Netty started on port 8000 2022-12-28 20:50:22.934 INFO 1 --- [ main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8000 2022-12-28 20:50:22.969 INFO 1 --- [ main] c.a.ApiGatewayApplication : Started ApiGatewayApplication in 4.45 seconds (JVM running for 4.862) 2022-12-28 20:50:27.878 WARN 1 --- [g64rsAotJWA4A-1] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:27.886 INFO 1 --- [g64rsAotJWA4A-1] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@748d2277: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:27.893 INFO 1 --- [g64rsAotJWA4A-2] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:32.942 WARN 1 --- [g64rsAotJWA4A-2] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:32.945 INFO 1 --- [g64rsAotJWA4A-2] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@419e8443: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:32.948 INFO 1 --- [g64rsAotJWA4A-3] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:38.008 WARN 1 --- [g64rsAotJWA4A-3] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:38.008 INFO 1 --- [g64rsAotJWA4A-3] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@69ca4bfc: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:38.009 INFO 1 --- [g64rsAotJWA4A-4] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:43.062 WARN 1 --- [g64rsAotJWA4A-4] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:43.064 INFO 1 --- [g64rsAotJWA4A-4] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@3e206044: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:43.068 INFO 1 --- [g64rsAotJWA4A-5] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:48.142 WARN 1 --- [g64rsAotJWA4A-5] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:48.142 INFO 1 --- [g64rsAotJWA4A-5] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@46628e2f: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:48.143 INFO 1 --- [g64rsAotJWA4A-6] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Disable delta property : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Single vip registry refresh property : null 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Force full registry fetch : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Application is null : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true 2022-12-28 20:50:52.552 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Application version is -1: true 2022-12-28 20:50:52.552 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server 2022-12-28 20:50:52.582 INFO 1 --- [tbeatExecutor-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on PUT request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on PUT request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.sendHeartBeat(RestTemplateEurekaHttpClient.java:99) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:893) at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1457) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 20 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 33 more 2022-12-28 20:50:52.582 INFO 1 --- [freshExecutor-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplicationsInternal(RestTemplateEurekaHttpClient.java:145) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplications(RestTemplateEurekaHttpClient.java:135) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1531) at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1498) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 23 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 36 more 2022-12-28 20:50:52.582 WARN 1 --- [tbeatExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on PUT request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.582 WARN 1 --- [freshExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.582 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to refresh its cache! This periodic background refresh will be retried in 30 seconds. status = Cannot execute request on any known server stacktrace = com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1531) at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1498) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) 2022-12-28 20:50:52.582 ERROR 1 --- [tbeatExecutor-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to send heartbeat! com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:893) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1457) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:52.624 INFO 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000: registering service... 2022-12-28 20:50:52.636 INFO 1 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.register(RestTemplateEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 21 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 34 more 2022-12-28 20:50:52.637 WARN 1 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.637 WARN 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - registration failed Cannot execute request on any known server com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:52.638 WARN 1 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator : There was a problem with the instance info replicator com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:53.205 WARN 1 --- [g64rsAotJWA4A-6] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:53.206 INFO 1 --- [g64rsAotJWA4A-6] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@55a62eea: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:53.209 INFO 1 --- [g64rsAotJWA4A-7] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:58.260 WARN 1 --- [g64rsAotJWA4A-7] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:58.262 INFO 1 --- [g64rsAotJWA4A-7] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@1f16b696: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:58.267 INFO 1 --- [g64rsAotJWA4A-8] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:51:03.361 WARN 1 --- [g64rsAotJWA4A-8] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:51:03.362 INFO 1 --- [g64rsAotJWA4A-8] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@2193ccd1: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:51:03.362 INFO 1 --- [g64rsAotJWA4A-9] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672]
해결됨
스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
[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] org.h2.jdbc.JdbcSQLNonTransientException: IO Exception: " java.net .UnknownHostException: ?��채린: ?��?���? ?��?��?���? ?� h2.bat파일을 실행하면 cmd창에 위와 같이 뜨면서 localhost :8082에 접속하면 위의 사진 같은 에러가 납니다. 인프런의 모든 질문을 읽어봐도 저처럼 UnknownHostException 오류가 난 사람은 없어서 질문합니다! (환경변수 설정부터 재부팅, 재설치, 모든 행동을 다 해보았습니다..)
해결됨
실전! 스프링 데이터 JPA
안녕하세요! 생성 시간, 수정 시간을 JPA Auditing으로 관리하는 것과 db에서 default, on update 조건으로 관리하는 것이 어떤 차이가 있는지 궁금합니다..!
미해결
자바 ORM 표준 JPA 프로그래밍 - 기본편
[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] 안녕하세요 임베디드 타입 영상을 보다가 enum타입과 비슷한것 같은데 궁금한 점이 생겨서 질문드립니다. <참고용 예제로 붙여 둔 코드 입니다.> @Getter @RequiredArgsConstructor public enum PersonalPositionStatus { ST("최전방 공격수"), RW("우측 공격수"), LW("좌측 공격수"), CAM("공격형 미드필더"), CM("중앙 미드필더"), CDM("수비형 미드필더"), RB("우측 수비수"), RCB("우측 센터백"), LCB("좌측 센터백"), LB("좌측 수비수"), GK("골키퍼"); private final String value; @Entity @Getter public class TeamMemberInfo extends BaseTimeEntity { @Id @GeneratedValue @Column(name = "teamMemberInfo_id") private Long id; @Enumerated(EnumType.STRING) private PersonalPositionStatus preferPosition; 위코드는 아래 조건들을 기준으로 만들었습니다 회원이 어떤 포지션을 선호하는지 조사합니다. PersonalPositionStatus에서 최소1개에서 최대 3개까지 선택가능 추후 선택된 값은 DB에 저장 강의를 보면서 @Enumerated(EnumType.STRINNG) private PersonalPositionStatus preferPostion @Embedded private PersonalPositionStatus preferPostion 이렇게 둘 다 사용 가능할 것 같아서... 임베디드 타입과 enum타입의 차이점과 어떤 상황에서 사용해야하는지 궁금해져습니다 enum은 미리 정의해둔 값을 선택해서 사용하기 위함이고 임베디드 타입은 단일 엔티티로 나타내기 위함으로 이해하면될까요?
해결됨
파이썬/장고 웹서비스 개발 완벽 가이드 with 리액트
antd 디자인 홈페이지에서도 똑같이 from 'antd'에서 가져오는데 최신버전이라 안먹히는것인지 Comment가 안불러와지네요. 자동완성도 지원이 안되고요
해결됨
대세는 쿠버네티스 (초급~중급편)
강사님 안녕하세요 강의 항상 잘 보고 있습니다. 강의 중에 궁금한 부분이 있어서 질문드립니다. HPA 기능을 사용하기 위해서 Metric Server를 설치하는데 이전 수업에서 kube-scheduler 설명할때는 kube-scheduler가 api-server에 watch를 걸어놓고 모든 node의 cpu/mem등의 리소스 상황을 파악하여 파드생성등의 요청이 있을때 목적지를 선정해주는 역할이라고 들었습니다. 그럼 metric server를 설치를 안해도 api-server를 통해 cpu/mem 정보를 알수 있지 않나 싶은데 HPA를 사용하기 위해서 metric server를 설치하는 이유가 있을까요? HPA에서 metric api를 사용한다는 것은 알고 있는데 kube-scheduler처럼 metric server를 통하지 않아도 cpu/mem 정보를 얻을수 있지 않을까 싶어서 여쭤봅니다.
해결됨
실전! Querydsl
안녕하세요. 서비스에서 select 해온 Entity에 toMany 연관관계 필드를 초기화 하는 부분에 대해 궁금해 질문드립니다. class AEntity{ @Id private Long id; @OneToMany(mappedBy=aEntity) private List<BEntity> bEntitise = new ArrayList<>(): } class BEntity{ @Id private Long id; @ManyToOne(fetch = FetchType.Lazy) @JoinColumn(name="a_id") private AEntity aEntity; } 이렇게 서로 양방향인 엔티티가 있다고 했을 때 class AService{ public AEntity findEntity(Long id){ AEntity findEntity = aRepository.findById(id).get(); //findEntity의 BEntityList를 lazy 초기화 하기 위한 코드 findEntity.getBEntities().size(); return findEntity; } } 서비스에서 엔티티를 찾아 컨트롤러로 리턴해주어 컨트롤러에서 dto로 변환 후, Body에 담아 보여주고 있습니다. 그런데 findEntity의 BEntities 필드를 서비스에서 초기화 시켜준 후 컨트롤러에서 DTO로 변환해야 LazyInitializationException이 발생하지 않아서 findEntity.getBEntities().size(); 이렇게 초기화를 해주는 코드를 작성하였는데 해당 코드가 뜬금없이 들어가 있는 느낌이라 보통 컬렉션 Lazy 엔티티를 초기화할 때 저렇게 사용해도 되는지 궁금해서 질문드립니다.(fetch 조인은 사용하지 않는다는 가정입니다.)
미해결
더 자바, Java 8
자바 8 이후, permgen이 metaspace로 대체되면서 static과 string 상수 풀이 heap 영역에서 관리되는 것으로 변경되었다고 알고 있습니다. 하지만 실제로 구글등과 각종 유튜브 설명들을 찾아본 결과 해당 내용을 서로 다른 두 가지 내용으로 설명하여 어떤 것이 맞는지 몰라 이렇게 질문드리게 되었습니다.(위의 사진은 static 변수가 method 영역에 속한다고 함) 첫번째 설명입니다. jdk의 설명중 class statics를 static object로 번역하여, static 변수와 메서드는 Method 영역(metaspace)에 이전과 동일하게 있고 static object(static A a = new A();)들만 heap으로 이동했다. 두번째 설명입니다. static이 붙은 모든 static 변수(primitive 타입, static int a = 1;)과 static 메서드, static object 등이 모두 heap 영역으로 이동했다. 둘 중 어느 설명이 맡는 것인지 질문드리고 싶습니다.
미해결
스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
return result.stream().findAny(); 말고 return result.get(0); 은 안되나요?
해결됨
실전! 코틀린과 스프링 부트로 도서관리 애플리케이션 개발하기 (Java 프로젝트 리팩토링)
data class BookRequest( val name: String, val type: BookType, ) 웹에서 폼에 책이름, 타입을 컴퓨터로 선택해서 요청을 보내면 컨트롤러에서 BookRequest에 enum 타입인 type에 자동으로 값이 받아지는건가요? 별도로 converter를 구현안해줘도 되는것인지 궁금합니다
미해결
실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
updateItemFrom.html <form th:object="${form}" method="post"> th:action 프로퍼티가 없습니다. 수정버튼을 누르셨잔아요. items/1/edit 로요청이 가는데 rest url 을 명시해준적도 없잔아요. items/1/edit 가는 요청이라는 것을 어떻게 인식하는거죠?
