삭제된 글입니다

선생님과 똑같이 했는데 뭐가 잘못되었을까요? import openpyxl excel_file = openpyxl.Workbook() excel_sheet = excel_file.active excel_sheet.append(['data1', 'data2', 'data3']) excel_file.save('tmp.xlsx') excel_file.close() NameError Traceback (most recent call last) <ipython-input-2-ceee3ced2775> in <module> ----> 1 excel_file.close() NameError: name 'excel_file' is not defined

안녕하세요 선생님. class MyList<T> where T : Monster  // T는 반드시 Monster 혹은 Monster를 상속받은 클래스여야 한다. 이 설명이 이해가 안가는데 T가 Monster 타입이어야되는 조건이 있는데 그럼 왜 모든 타입을 받을 수 있는 제너릭으로 만든건가요??

아래 처럼 제네릭을 이용해 union을 제거했는데 option.value = item.value.toString(); option.innerText = item.value.toString(); 이부분에서 toString에 `T형식에는 toString 속성이 없습니다`라는 에러가 나옵니다. 찾아봐도 해결하는 방법을 몰라서 어떻게 해야하는지 질문드립니다. function createDropdownItem<T>(item: DropDownItem<T>) { const option = document.createElement('option'); option.value = item.value.toString(); option.innerText = item.value.toString(); option.selected = item.selected; return option; } emails.forEach(function (email) { const item = createDropdownItem<string>(email); const selectTag = document.querySelector('#email-dropdown'); selectTag?.appendChild(item); });

뷰를 처음 공부하고 있습니다. 어느정도 공부하다보니 SEO 문제를 접하게 되었는데요... SEO문제를 해결하기 위해 nuxt를 사용하면 운영서버가 꼭 node.js 환경이어야 하나요? 클라이언트 요구 사항으로 일반 홈페이지를 vue로 개발하는 상황인데 백엔드는 자바로 개발될겁니다. 기존의 홈페이지도 현재 자바로 개발되서 운영중이구요. 이걸 리뉴얼 하면서 vue로 프론트를 개발해 달라고 해서 현재 열심히 공부중인데 SEO처리를 어떻게 해야하나 궁금해집니다. 사실 vue관련 강의 이것저것 거의다  듣고 이 강의는 nuxt 가 궁금해서 수강하게 되었습니다. 이 강의는 아직 초반만 들은 상태입니다. 다시 질문으로 돌아와서 현재 자바로 운영되고 있는 홈페이지의 프론트를 vue로 개발하려는데 nuxt를 사용하면 배포시 운영서버에 꼭 node.js 환경이 갖춰져야 하나요? 아니면 프론트 개발할때만 node js 환경에서 하면 되는건가요?

pdf 뿐만 아니라 사내 프로그램에서 항목 select가 안 되는 경우에는 어떻게 처리해야 하나요? 

13강을 따라하고 있는데 아래와 같은 에러가 발생합니다. 제가 강의를 듣는 환경은 STS4 를 사용하고 있고, JDBC API와 Oracle Driver를 같이 선택해서 프로젝트를 생성했고,  강의 Sample 그대로를 따라서 작성 후 내장 서버를 실행시키면 아래와 같은 에러가 발생합니다. 무엇이 잘 못 된 걸까요?  OpenJDK 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release.   .   ____          _            __ _ _  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \  \\/  ___)| |_)| | | | | || (_| |  ) ) ) )   '  |____| .__|_| |_|_| |_\__, | / / / /  =========|_|==============|___/=/_/_/_/  :: Spring Boot ::        (v2.3.4.RELEASE) 2020-10-27 09:13:24.957  INFO 13156 --- [           main] c.s.s.Ex13JdbcTemplate1Application       : Starting Ex13JdbcTemplate1Application on LCSC05V395 with PID 13156 (C:\workspace\Ex13_JdbcTemplate1\bin\main started by 26114 in C:\workspace\Ex13_JdbcTemplate1) 2020-10-27 09:13:24.959  INFO 13156 --- [           main] c.s.s.Ex13JdbcTemplate1Application       : No active profile set, falling back to default profiles: default 2020-10-27 09:13:26.043  INFO 13156 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (http) 2020-10-27 09:13:26.058  INFO 13156 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat] 2020-10-27 09:13:26.058  INFO 13156 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.38] 2020-10-27 09:13:26.383  WARN 13156 --- [           main] o.a.tomcat.util.scan.StandardJarScanner  : Failed to scan [file:/C:/Users/xxxxx/.gradle/caches/modules-2/files-2.1/com.oracle.database.jdbc/ojdbc8/19.3.0.0/967c0b1a2d5b1435324de34a9b8018d294f8f47b/oraclepki.jar] from classloader hierarchy java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:205) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at com.study.springboot.Ex13JdbcTemplate1Application.main(Ex13JdbcTemplate1Application.java:10) ~[main/:na] Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) ~[na:na] at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na] at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38] ... 47 common frames omitted Caused by: java.nio.file.NoSuchFileException: C:\Users\26114\.gradle\caches\modules-2\files-2.1\com.oracle.database.jdbc\ojdbc8\19.3.0.0\967c0b1a2d5b1435324de34a9b8018d294f8f47b\oraclepki.jar at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38) ~[na:na] at java.base/sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:198) ~[na:na] at java.base/java.nio.file.Files.readAttributes(Files.java:1843) ~[na:na] at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1160) ~[na:na] at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:717) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:237) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:167) ~[na:na] at java.base/java.util.jar.JarFile.<init>(JarFile.java:347) ~[na:na] ... 52 common frames omitted 2020-10-27 09:13:26.385  WARN 13156 --- [           main] o.a.tomcat.util.scan.StandardJarScanner  : Failed to scan [file:/C:/Users/xxxxx/.gradle/caches/modules-2/files-2.1/com.oracle.database.security/oraclepki/19.3.0.0/e52a34f271c6c62ee1a73b71cc19da5459b709f/osdt_core.jar] from classloader hierarchy java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:205) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at com.study.springboot.Ex13JdbcTemplate1Application.main(Ex13JdbcTemplate1Application.java:10) ~[main/:na] Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) ~[na:na] at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na] at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38] ... 47 common frames omitted Caused by: java.nio.file.NoSuchFileException: C:\Users\26114\.gradle\caches\modules-2\files-2.1\com.oracle.database.security\oraclepki\19.3.0.0\e52a34f271c6c62ee1a73b71cc19da5459b709f\osdt_core.jar at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38) ~[na:na] at java.base/sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:198) ~[na:na] at java.base/java.nio.file.Files.readAttributes(Files.java:1843) ~[na:na] at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1160) ~[na:na] at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:717) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:237) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:167) ~[na:na] at java.base/java.util.jar.JarFile.<init>(JarFile.java:347) ~[na:na] ... 52 common frames omitted 2020-10-27 09:13:26.387  WARN 13156 --- [           main] o.a.tomcat.util.scan.StandardJarScanner  : Failed to scan [file:/C:/Users/xxxxx/.gradle/caches/modules-2/files-2.1/com.oracle.database.security/oraclepki/19.3.0.0/e52a34f271c6c62ee1a73b71cc19da5459b709f/osdt_cert.jar] from classloader hierarchy java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:205) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at com.study.springboot.Ex13JdbcTemplate1Application.main(Ex13JdbcTemplate1Application.java:10) ~[main/:na] Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) ~[na:na] at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na] at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38] ... 47 common frames omitted Caused by: java.nio.file.NoSuchFileException: C:\Users\26114\.gradle\caches\modules-2\files-2.1\com.oracle.database.security\oraclepki\19.3.0.0\e52a34f271c6c62ee1a73b71cc19da5459b709f\osdt_cert.jar at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38) ~[na:na] at java.base/sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:198) ~[na:na] at java.base/java.nio.file.Files.readAttributes(Files.java:1843) ~[na:na] at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1160) ~[na:na] at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:717) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:237) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:167) ~[na:na] at java.base/java.util.jar.JarFile.<init>(JarFile.java:347) ~[na:na] ... 52 common frames omitted 2020-10-27 09:13:26.389  WARN 13156 --- [           main] o.a.tomcat.util.scan.StandardJarScanner  : Failed to scan [file:/C:/Users/xxxxx/.gradle/caches/modules-2/files-2.1/com.oracle.database.security/oraclepki/19.3.0.0/oracle.osdt/osdt_core.jar] from classloader hierarchy java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:205) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at com.study.springboot.Ex13JdbcTemplate1Application.main(Ex13JdbcTemplate1Application.java:10) ~[main/:na] Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) ~[na:na] at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na] at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38] ... 47 common frames omitted Caused by: java.nio.file.NoSuchFileException: C:\Users\26114\.gradle\caches\modules-2\files-2.1\com.oracle.database.security\oraclepki\19.3.0.0\oracle.osdt\osdt_core.jar at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38) ~[na:na] at java.base/sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:198) ~[na:na] at java.base/java.nio.file.Files.readAttributes(Files.java:1843) ~[na:na] at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1160) ~[na:na] at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:717) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:237) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:167) ~[na:na] at java.base/java.util.jar.JarFile.<init>(JarFile.java:347) ~[na:na] ... 52 common frames omitted 2020-10-27 09:13:26.391  WARN 13156 --- [           main] o.a.tomcat.util.scan.StandardJarScanner  : Failed to scan [file:/C:/Users/xxxxx/.gradle/caches/modules-2/files-2.1/com.oracle.database.security/oraclepki/19.3.0.0/oracle.osdt/osdt_cert.jar] from classloader hierarchy java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:205) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.38.jar:9.0.38] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE] at com.study.springboot.Ex13JdbcTemplate1Application.main(Ex13JdbcTemplate1Application.java:10) ~[main/:na] Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) ~[na:na] at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na] at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38] ... 47 common frames omitted Caused by: java.nio.file.NoSuchFileException: C:\Users\26114\.gradle\caches\modules-2\files-2.1\com.oracle.database.security\oraclepki\19.3.0.0\oracle.osdt\osdt_cert.jar at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[na:na] at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53) ~[na:na] at java.base/sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38) ~[na:na] at java.base/sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:198) ~[na:na] at java.base/java.nio.file.Files.readAttributes(Files.java:1843) ~[na:na] at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1160) ~[na:na] at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:717) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:237) ~[na:na] at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:167) ~[na:na] at java.base/java.util.jar.JarFile.<init>(JarFile.java:347) ~[na:na] ... 52 common frames omitted 2020-10-27 09:13:26.395  INFO 13156 --- [           main] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 2020-10-27 09:13:26.404  INFO 13156 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext 2020-10-27 09:13:26.405  INFO 13156 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1392 ms 2020-10-27 09:13:26.711  INFO 13156 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor' 2020-10-27 09:13:26.922  INFO 13156 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8081 (http) with context path '' 2020-10-27 09:13:26.932  INFO 13156 --- [           main] c.s.s.Ex13JdbcTemplate1Application       : Started Ex13JdbcTemplate1Application in 2.377 seconds (JVM running for 3.299)

(강의시간 기준으로 00:20:00과 01:01:10입니다.) Xml 프로젝트에서는 Bean을 활용할 때마다 @Lazy를 작성해야 하는걸로 알고있습니다. Xml 프로젝트일 경우 서버가 가동될 때 @Autowired 또는 @Resource가 있다면 최초의 요청없이 무조건 Bean을 주입하려고 시도하고 이때, 오류가 발생하기 때문에 @Lazy를 작성해주는걸로 알고있습니다. Xml 프로젝트의 BoardController.java에서  @Autowired private BoardService boardService; @Resource(name = "loginUserBean") @Lazy private UserBean loginUserBean; boardService에 @Lazy가 없는 이유와 loginUserBean에는 왜 @Lazy가 있는지 차이에 대한 정확한 이유를 잘 모르겠습니다.

페이지의 URL 주소는 따로 따라야하거나 추천하는 규칙이 있을까요? 

컴포넌트는 재사용성을 고려한 폼이라고 알고있는데, 각 페이지에서 한번만 필요한 폼도 일일이 컴포넌트를 만들어주나요? 

흰배경으로 되요 ㅠㅠ 그림파일이 이상한 거겠죠?

h2를 로컬에 설치해서 spring boot에 연동하여 사용하는 방법 외에 지금 수업과 같은 방식으로 h2 데이터베이스를 사용한다면,  postmapping으로 user 데이터를 삽입하고 나서, 그 데이터가 계속 유지되도록 하기 위해서는 서버를 계속 가동해놓는 수 밖에 없는지 궁금합니다!

다이얼 로그의 버튼이 보이질 않습니다

안녕하세요 강사님. 현재 섹션3 듣고있습니다. 다른 게 아니라 포스트맨으로 아무리 데이터를 보내봐도 createdProduct는 undefined값만 가지고, 실제 db에는 저장이 되지 않습니다. 이거저거 찾아봤지만 원인은 잘 모르겠습니다. 몽고db는 처음 써봐서 그쪽 문제가 아닌가 싶은데 해결법이 있을까요? 아래에 제 코드와 실행결과 첨부하겠습니다. 감사합니다. ---Code--- ---요청--- ---결과---

const b = {      name :  '하하',      bb () {                  return this.name;       },      a: x => {                   return this.name;         } } 생뚱맞은 질문 있을수도 있는데 여기서 a: x=> {return this.name}에서  에로우 함수는 함수스코프인데 실행컨텍스트 실행이 this바인딩을 안하니까 const b= {}이쪽 스코프를 참조하니까 객체에서의 this는 window인가여 TT bb() {    const b = x => {              return this.name;      } } 같은경우는 this바인딩 안하니까 외부함수 즉 메소드 bb(){}의 this를 보니까 this는 b를 보는건 알겟는데용

안녕하세요. 백기선 강사님 강의 참고하여 직접 코드 짜면서 공부하는 도 중 막히는 부분이 생겨 질문 남기게 되었습니다. Study관련한  Event에 대해서 테스트를 해보려고 하는데요. @Transactional @RunWith(SpringRunner.class) @SpringBootTest(webEnvironment = WebEnvironment.MOCK) @AutoConfigureMockMvc public class StudyNotificationTest { @Autowired MockMvc mockMvc; @Autowired ApplicationEventPublisher applicationEventPulbisher; @Autowired NotificationService notificationService; @Autowired NotificationRepository notificationRepository; @Autowired AccountService accountService; @Autowired AccountRepository accountRepository; @Autowired StudyService studyService; @Autowired StudyRepository studyRepository; @Autowired ZoneService zoneService; @Autowired TagService tagService; @Autowired TagRepository tagRepository; @Autowired ThreadPoolTaskExecutor executor; @BeforeEach public void boforeEach() { SignUpForm signUpForm = SignUpForm.builder() .email("test@test.com") .nickname("test") .password("12341234") .build(); Account account = accountService.signUp(signUpForm); account.setStudyCreatedByEmail(true); account.setStudyCreatedByWeb(true); account.setStudyUpdatedByEmail(true); account.setStudyUpdatedByWeb(true); TagForm tagForm = TagForm.builder().title("test").build(); Zone zone = zoneService.findAll().get(0); Tag tag = tagService.save(tagForm); accountService.addTag(account, tag); accountService.addZone(account, zone); StudyForm studyForm = StudyForm.builder() .fullDescription("test") .path("test") .shortDescription("test") .title("test").build(); Study study = studyService.save(studyForm, account); studyService.addTag(study, tag); studyService.addZone(study, zone); } @AfterEach public void afterEach() { accountRepository.deleteAll(); studyRepository.deleteAll(); tagRepository.deleteAll(); notificationRepository.deleteAll(); } @DisplayName("Study Created Event") @Test public void studyCreateEventTest() throws Exception { Study study = studyService.getOnlyStudyByPath("test"); Account account = accountService.findByNickname("test"); applicationEventPulbisher.publishEvent(new StudyCreatedEvent(study)); executor.getThreadPoolExecutor().awaitTermination(1, TimeUnit.SECONDS); List<Notification> notifications = notificationService.findByNotificationType(NotificationType.STUDY_CREATED); assertTrue(notifications.stream().map(Notification::getAccount).collect(Collectors.toList()).contains(account)); } } 위와 같이 코드를 작성했는데, EventListener에서 Study를 조회하는 부분에서 ID에 해당하는 Study가 없다는 오류와 함께 테스트가 진행되지 않았습니다.. (executor 부분은 async 테스트 하는 방법 찾아보던 도중 발견한 코드입니다.) 해당 이벤트를 테스트할 수 있는 방법 문의드립니다. 감사합니다.  

1편부터 스프링 data 까지 들은 학생입니다. 학습한 것을 응용하기 위해 혼자서 홈페이지를 만드는 도중 궁금한 것이 생겨서 질문 드립니다! validation 관련 질문인데요..! (spring mvc 질문 같지만 ㅜㅜ) spring boot로 private String password1 prvate String password2 이렇게해서 패스워드가 서로 다를 경우 오류가 나게 하는 validation을 작성하려 합니다. @Size나 @notEmpty 같이 기능이 있으면 편할텐데, 구글에 검색해보니 custom validator를 작성하라고 나옵니다 아예 어노테이션을 하나 새로 만드는 일인데.. 혹시 패스워드 오류를 쉽게 표현할 수 있는 방식이 있을까요?

두 가지 궁금증이 있어서 질문 드립니다. 1. 왜 Repository는 인터페이스를 만들고 구현체를 만들어 사용하나요? 2. MemberService에서는 왜 구현체인 MemoryMemberRepository가 아니라 MemberRepository를 사용하나요? 3-1. 왜 MemberService에 있는 MemberRepository는 final을 사용하나요? memberRepository가 바뀌지 않게 하기 위한 장치를 하나 더하는 느낌으로 생각해도 괜찮은 건가요? 3-2. MemberController에서 memberService를 정의해서 사용할 때와 MemberService에서 memberRepository를 정의해서 사용할 때 final을 적용하여 사용하는 것이 권장되나요?

9:16 따로 입력받고 싶어서 했는데 오류가 났어요 무슨이유일까요? 설명하신 map의 원리라면 되야하는 것 아닌가요?ㅠ a=map(int,input("첫번째 숫자 : ")) b=map(int,input("두번째 숫자 : ")) print(a+b)

위와 같이 yml 파일 설정한 뒤, 재실행하였는데 dependency에 추가했을 때와 다른 점이 없는데, 혹시 왜그럴까요..?? 스프링 버전 2.1.17 입니다.