안녕하세요. 강의 PT자료 제공은 안되나요? 감사합니다.

HttpServletRequest response ->HttpServletResponse response두번째 파라미터 오타 맞지요?

구글링해봐도 어떤문제인지 모르겠어서 질문드립니다. 오류내용, packge.json, webpack.config.js 소스 이미지 첨부합니다. 강의내용과 똑같이 하였는데 왜그런지 모르겠네요 webpack4 입니다.

http://localhost:8080/basic/items 에서 상품등록버튼을 클릭할때 addForm.html 안에있는 th:action에 따라 오류가 나고 안나고 하는데 무슨원리로 이렇게 되는건지 모르겠습니다 ㅠㅠ addForm.html 부분에서 <h4 class="mb-3">상품 입력</h4> <form action="item.html" th:action="/basic/items/add" method="post"> 이 부분에서 th:action 뒤의부분을 생략을 안하고 실행하게 되었을때  http://localhost:8080/basic/items/add 로 이동하고 500오류가 뜹니다. 그런데 th:action 뒤의부분을 생략하고 실행하면 정상적으로  상품등록화면이 잘 뜹니다. 이때 오류코드는  org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "/basic/items/add" (template: "basic/addForm" - line 21, col 30) at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1396) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1141) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1080) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:228) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1723) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na] 2021-07-11 12:27:30.430 ERROR 18036 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "/basic/items/add" (template: "basic/addForm" - line 21, col 30)] with root cause org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "/basic/items/add" (template: "basic/addForm" - line 21, col 30) at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1396) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1141) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1080) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:228) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1723) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na] 입니다.

클라우데라 매니저가 한참을 기다려도 접속이 안됩니다.. 똑같이 설정을 했는데 무엇이 문제일까요..ㅠㅠ.. 아래와 같이 저 창만 나오고 클라우데라 매니저로 넘어가지 않습니다.. 서버01,02 둘 다 virtualbox에서 실행시켜놓았고, hosts파일도 변경했습니다...

- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. 안녕하세요 강의 잘 듣고 있습니다~! 지금까지 컨트롤러 v1에서는 컨트롤러 내부에서 모델(HttpServletRequest) request에 데이터를 넣고 이 request를 바로 JSP 뷰로 전달&포워드했다면, 컨트롤러 v2에서 각 컨트롤러는 request에 데이터를 넣고 렌더링할 JSP 뷰의 경로만을 리턴하는데요. 리턴되고 다시 원래 코드 흐름으로 돌아왔을 때 어떻게 이 request에 데이터가 그대로 보관되어 JSP로 전달&포워드되는 것인지 궁금합니다. 예를 들어서 메인함수에서 변수 a가 있다고 합시다. 그리고 어떤 연산 처리를 하는 메서드를 호출해서 a를 매개변수로넘깁니다. 메서드가 호출&실행되고 난 후엗도 메인함수의 변수 a는 변함이 없습니다. 이 맥락에서 FrontControllerServletV2 클래스의 service 함수에서 HttpServletRequest를 각 컨트롤러에 매개변수로 넘겨주고, 각 컨트롤러 내부에서 전달 받은 request에 값을 넣어주어도 해당 컨트롤러 실행이 종료되고 난 후 service 함수 내에서 어떻게 request에 데이터가 그대로 보존되고 JSP로 전달되는지 궁금합니다! 감사합니다.

안녕하세요.  local 로그인을 진행하면 응답의 헤더에 Set-cookie : connect.sid = ~ (그림1) 는 있습니다.  근데  storage에는 세션쿠키가 없어서 원인을 못 찾는 중입니다.(그림2) 문제 해결에 필요하다고 생각되는 부분을 적어보자면,  아래와 같습니다.  app.js const express = require("express")const cors = require("cors")const session = require('express-session');const cookieParser = require('cookie-parser');const passport = require('passport');const dotenv = require('dotenv');const morgan = require('morgan');const path = require('path');const passportConfig =require("./passport")dotenv.config()const app = express()const db = require("./models")const userRouter = require("./routes/user")passportConfig();db.sequelize.sync().then(()=>{ console.log("db 연결 성공")}).catch(console.error)app.use(morgan('dev'))app.use(cors({ origin : "*"}))// app.use('/', express.static(path.join(__dirname, 'uploads')));app.use(express.json());app.use(express.urlencoded({ extended: true }));app.use(cookieParser("siwon"));app.use(session({ saveUninitialized: false, resave: false, secret: "siwon",}));app.use(passport.initialize());app.use(passport.session());... passport/local const passport = require('passport');const { Strategy: LocalStrategy } = require('passport-local');const bcrypt = require('bcrypt');const { User } = require('../models');module.exports = () => { passport.use(new LocalStrategy({ usernameField: 'email', //req.body.email passwordField: 'password', //req.body.password }, async (email, password, done) => { try { const user = await User.findOne({ where: { email } }); if (!user) { return done(null, false, { reason: '존재하지 않는 이메일입니다 🥲' }); } const result = await bcrypt.compare(password, user.password); if (result) { return done(null, user); } return done(null, false, { reason: '비밀번호가 틀렸습니다 🥲' }); } catch (error) { console.error(error); return done(error); } }));}; passport/index const passport = require("passport");const local = require("./local");const { User } = require("../models");module.exports = () => { passport.serializeUser((user, done) => { console.log("serializeUser 실행") done(null, user.id); }); passport.deserializeUser(async (id, done) => { console.log("deserializeUser 실행") try { const user = await User.findOne({ where: { id } }); done(null, user); } catch (error) { console.error(error); done(error); } }); local();}; 로그인을 진행하면 serializeUser 실행은 콘솔에 찍히는데 deserializeUser는 콘솔에 찍히지 않습니다. req.user도 생성이 안되는 것을 확인하였습니다. app.js에서 세션설정을 잘못한 거 같아 계속 시도해봤지만  해결되지 않아(storage에 세션쿠키가 없는 것) 질문드립니다 ㅠㅠ ---------------------------------------------------------------------------------- (그림1, POST+prefligth  200) (그림2)

어제 다른 컴퓨터로 React 공부를 하다가 node_modules를 제외하고 commit & push 한 다음에 오늘 다른 컴퓨터에서 git clone을 통해 코드를 그대로 불러오고 npm i 를 통해 node_modules를 다시 받아주었습니다. 그런데 어제는 npx webpack 명령어가 정상적으로 잘 작동했는데 오늘 다른 컴퓨터에서는 npx webpack 명령어를 입력하면 계속해서 에러가 발생합니다. 혹시 이유를 알 수 있을까요???

강사님의 코드를 보면서 짜는데 네트워크 부분에서 계속 요청이 일어나 Product state가 계속 바뀝니다 혹시 어느 부분이 문제일까요?

float가 4바이트지만 오류발생? 등을 방지하기 위해 8바이트에 넣는다고 하셨는데, 이게 float도 8바이트에 넣는 "경향"이 있는 건가요 아니면 8바이트로 바꾸도록 처음부터 설계되어있는 건가요?

이전 영상에서는 api 매뉴얼 보실때 명령모드에서 !man ftell 이와같이 보셨는데 지금 영상에서는 그렇게 사용하지 않고 다른 단축키를 사용하시는것 같은데요, 혹시 어떻게 하시는건지 문의드립니다. 저도 코딩하다가 사용하려는 함수의 파라미터나 리턴 자료형이 어떤것이었는지 찾아볼때가 많거든요..!

em.detach() 나 em.clear()를 해줄시, 프록시 객체가 영속성 컨텍스트에서 지워져서 이후, 프록시 객체의 메서드를 호출했을때 Lazy 예외가 발생합니다. 하지만 수업에서 하는 것처럼 em.close()를 해도 예외가 발생하지 않고, 실제 객체가 영속성 컨텍스트에 올라와 동작합니다.

표준 스케일링에 대해 설명해주시는 과정에서 표준 스케일링이 곧 정규분포로의 변환을 의미하는건 아니라는 말씀을 주셨는데,통계적 지식이 충분하지 않다보니 그 부분이 잘 이해가 되지 않아서 문의드립니다. 표준스케일링 작업을 거칠 경우, 평균이 0, 분산이 1인 표준정규분포와 동일한 조건의 분포로 변환되게 되는데 정규분포로 변환된다는 뜻이 아니라는 거는 예외의 경우가 있거나, 특별히 유의해야하는 부분이 있어서 일까요?

유니티말고 이쪽강의만 수강하고 싶은데 C#강의에서 언급한것들을 공부 하고 왔다고 가정하고 진행하는 강의는 아니죠 ?? 현재 제 수준은 시중에 파는 C언어 입문, C++ 입문책들을 한바퀴씩은 돌려보고, 언리얼을 아주 조금 만져본 상황입니다.

Autowired 대신, AllargsConstructor  사용하면 안되나요? 잘 동작하기는 하는데 어떤게 더 좋은 방식인지 모르겠어요

vue로 프론트 엔드 개발을 하고 배포를 하려고 하는데 막히는 점에 있어서 질문을 드립니다..ㅠㅠ 백엔드는 없고 api 사이트에서 회원가입을 하여 데이터를 받아옵니다. 무료지만 많은 접속을하게되면 요금이 청구되는데.. 여기서 궁금한 점이 있습니다. 1. api-key를 vue에서 숨길 방법은 없나요? dotenv 설치 후 .env를 이용하여 봤는데 F12 개발자도구 탭에서  Requests Headers 를 보면 api 키가 적나라하게 나오더라고요.. 만약 숨길 방법이 없다면 해커들이 제 api key 를 보고 악용을하여 어마어마한 요금이 청구되는 사태는 막을수 없나요? Nuxt를 이용하여 ssr:false ,  target:'static' 으로 vue 개발을 했고 netlify 에서 배포 예정입니다.  @nuxtjs/dotenv 모듈을 이용하였습니다.

안녕하세요, 데이타를 생성해 주는 bigdata.smartcar.loggen-1.0.jar에 대한 소스코드는 어디서 구할수있을까요? 강의를 듣다보니 어떻게 생성해 주는지 개발자로서 궁금해서 여쭤봅니다.

Could not parse as expression 에러가 나오는데원인이 뭘까요? org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "$ {#temporals.day(localDateTime)}" (template: "basic/date" - line 15, col 50) at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1396) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1141) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1080) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.8.jar:5.3.8] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.8.jar:5.3.8] at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.48.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:228) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.8.jar:5.3.8] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.8.jar:5.3.8] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1723) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.48.jar:9.0.48] at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na] 2021-07-11 05:43:09.657 ERROR 5188 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "$ {#temporals.day(localDateTime)}" (template: "basic/date" - line 15, col 50)] with root cause package hello.thymeleaf.basic;import lombok.Data;import org.springframework.stereotype.Component;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import javax.servlet.http.HttpSession;import java.time.LocalDateTime;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;@Controller@RequestMapping("/basic")public class BasicController { @GetMapping("text-basic") public String textBasic(Model model) { model.addAttribute("data","Hello <b>Spring!</b>"); return "basic/text-basic"; } @GetMapping("text-unescaped") public String textUnescaped(Model model) { model.addAttribute("data","Hello <b>Spring!</b>"); return "basic/text-unescaped"; } @GetMapping("variable") public String variable(Model model) { User userA = new User("userA", 10); User userB = new User("userB", 20); List<User> list = new ArrayList<>(); list.add(userA); list.add(userB); Map<String, User> map = new HashMap<>(); map.put("userA", userA); map.put("userB", userB); model.addAttribute("user", userA); model.addAttribute("users", list); model.addAttribute("userMap", map); return "basic/variable"; } @GetMapping("basic-objects") public String basicObjects(HttpSession session) { session.setAttribute("sessionData", "Hello Session"); return "basic/basic-objects"; } @Component("helloBean") static class HelloBean { public String hello(String data) { return "Hello " + data; } } @GetMapping("/date") public String date(Model model){ model.addAttribute("localDateTime", LocalDateTime.now()); return "basic/date"; } @Data static class User { private String username; private int age; public User(String username, int age) { this.username = username; this.age = age; } }} <!DOCTYPE html><html xmlns:th="http://www.thymeleaf.org"><head> <meta charset="UTF-8"> <title>Title</title></head><body><h1>LocalDateTime</h1><ul> <li>default = <span th:text="${localDateTime}"></span></li> <li>yyyy-MM-dd HH:mm:ss = <span th:text="${#temporals.format(localDateTime,'yyyy-MM-dd HH:mm:ss')}"></span></li></ul><h1>LocalDateTime - Utils</h1><ul> <li>${#temporals.day(localDateTime)} = <span th:text="${#temporals.day(localDateTime)}"></span></li> <li>${#temporals.month(localDateTime)} = <span th:text="${#temporals.month(localDateTime)}"></span></li> <li>${#temporals.monthName(localDateTime)} = <span th:text="${#temporals.monthName(localDateTime)}"></span></li> <li>${#temporals.monthNameShort(localDateTime)} = <span th:text="${#temporals.monthNameShort(localDateTime)}"></span></li> <li>${#temporals.year(localDateTime)} = <span th:text="${#temporals.year(localDateTime)}"></span></li> <li>${#temporals.dayOfWeek(localDateTime)} = <span th:text="${#temporals.dayOfWeek(localDateTime)}"></span></li> <li>${#temporals.dayOfWeekName(localDateTime)} = <span th:text="${#temporals.dayOfWeekName(localDateTime)}"></span></li> <li>${#temporals.dayOfWeekNameShort(localDateTime)} = <span th:text="${#temporals.dayOfWeekNameShort(localDateTime)}"></span></li> <li>${#temporals.hour(localDateTime)} = <span th:text="${#temporals.hour(localDateTime)}"></span></li> <li>${#temporals.minute(localDateTime)} = <span th:text="${#temporals.minute(localDateTime)}"></span></li> <li>${#temporals.second(localDateTime)} = <span th:text="${#temporals.second(localDateTime)}"></span></li> <li>${#temporals.nanosecond(localDateTime)} = <span th:text="${#temporals.nanosecond(localDateTime)}"></span></li></ul></body></html>

찾아봤는데 없는거같아서 질문합니다...!  알려주세용 ㅜㅜ

강사님, 안녕하세요! 실무에서 고객 반응에 따른 성과 평가를 어떻게 하는지 궁금하여 질문드립니다! 가령, 어떤 캠페인 혹은 추천시스템에 대하여 아래와 같은 전환 결과를 나타낼 경우에 A가 언제나 B보다 좋다고 해석할 수 있는 건가요? 비즈니스 목표에 따라 다른 것 같은데, 궁극적인 목적은 어쨌든 구매전환이니까... 만약 이런 경우라면, 어떤 선택을 선택을 해야할지 강사님의 고견 여쭤봅니다! 좋은 강의해주셔서 감사합니다! 듣고 또 듣고 있습니다!ㅎㅎ