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2020년 8월 5일 18시11분 부터 약 25분간 장애가 발생했습니다.
불편드려 죄송합니다. (자세히 보기)

JSP 강의평가 웹 사이트 개발하기
JSP 강의평가 웹 사이트 개발하기
수강정보
(18개의 수강평)
1139명의 수강생
스킬태그 #JSP, #Java, #웹 개발
무료
지식공유자 : 안경잡이개발자
15회 수업 · 총 3시간 50분 수업
기간 : 평생 무제한 시청
수료증 : 미발급 강의
수강 난이도 : 중급이상
씅 프로필

명령 프롬프트에서 javac를 입력하면 4달 전
jsp 개발환경 구축 및 테스트에서 환경 변수 설정을 다 완료했는데요, 명령프롬프트를 관리자 권한으로 시행한 뒤 javac를 입력하면, 'javac'은(는) 내부 또는 외부 명령, 실행할 수 있는 프로그램, 또는 배치 파일이 아닙니다. 라고 뜹니다!! 혹시 왜그런가요?? 

0
jiyoung2589 프로필

이미 존재하는 아이디.. jiyoung2589 8달 전
이미 존재하는 아이디라고만 뜨는데 어떻게 하죠.. 데이터베이스랑 연결이 안된건가요? ping succeeded라고는 하는데

1
ckdgy123 프로필

영어발음이너무구려요.. ckdgy123 9달 전
그냥 한국식영어발음으로 하시는게나을거같아요..

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정우 프로필

오류가 도저히 맥락을 모르겠어요 ㅜㅜ 정우 2019.05.22
JSP 파일 [/userRegisterAction.jsp]의 [50] 행에서 오류가 발생했습니다. Unreachable code 47: script.close(); 48: return; 49: } 50: %>자꾸 이런 오류가 뜨는데 왜 unreachable가 뜨는지 모르겠네요 ㅜㅜ

2
조영순 프로필

dropdown 하위메뉴가 보이질 않아요 조영순 2019.01.11
아래와 같이 작업후 실행하면 회원관리를 선택해도 dropdown 하위메뉴가 보이질 않습니다.어떻게 해결하면 될까요?'''<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!DOCTYPE html> 강의평가 웹 사이트 강의평가 웹 사이트 메인 회원 관리 로그인 회원가입 로그아웃 검색 '''

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조영순 프로필

강의자료 다운받는 곳 조영순 2019.01.11
해당 강의에 대한 강의자료 또는 소스코드를 따로 다운 받을 수 있는 곳은 없나요?

0
dd hold 프로필

이런 오류가 뜨는데 타이핑이 잘못된건가요?? dd hold 2018.06.30
Stacktrace:] with root causeorg.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: [14] in the generated java file: [D:UsersWH_Laptopeclipse-workspace.metadata.pluginsorg.eclipse.wst.server.coretmp1workCatalinalocalhostHello_WorldorgapachejspuserJoinAction_jsp.java]Only a type can be imported. user.UserDTO resolves to a packageAn error occurred at line: [15] in the generated java file: [D:UsersWH_Laptopeclipse-workspace.metadata.pluginsorg.eclipse.wst.server.coretmp1workCatalinalocalhostHello_WorldorgapachejspuserJoinAction_jsp.java]Only a type can be imported. user.UserDAO resolves to a packageAn error occurred at line: [24] in the jsp file: [/userJoinAction.jsp]UserDAO cannot be resolved to a type21: script.close();22: return;23: }24: UserDAO userDAO = new UserDAO();25: int result = userDAO.join(userID, userPassword);26: if(result == 1) {27: PrintWriter script = response.getWriter();An error occurred at line: [24] in the jsp file: [/userJoinAction.jsp]UserDAO cannot be resolved to a type21: script.close();22: return;23: }24: UserDAO userDAO = new UserDAO();25: int result = userDAO.join(userID, userPassword);26: if(result == 1) {27: PrintWriter script = response.getWriter();

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윤창현 프로필

이 에러 어떻게 해결하나요? 회원가입 버튼 누르니 이런 에러 뜨네요 윤창현 2018.06.14
Loading class com.mysql.jdbc.Driver'. This is deprecated. The new driver class iscom.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.Thu Jun 14 00:00:33 KST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.java.sql.SQLException: The server time zone value '´???¹?±¹ ???ؽ?' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:127)at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:95)at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:87)at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:61)at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:71)at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76)at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:862)at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:444)at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:230)at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:226)at java.sql.DriverManager.getConnection(Unknown Source)at java.sql.DriverManager.getConnection(Unknown Source)at util.DatabaseUtil.getConnection(DatabaseUtil.java:14)at user.UserDAO.join(UserDAO.java:14)at org.apache.jsp.userJoinAction_jsp._jspService(userJoinAction_jsp.java:139)at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Unknown Source)Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '´???¹?±¹ ???ؽ?' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)at java.lang.reflect.Constructor.newInstance(Unknown Source)at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:59)at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:83)at com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:128)at com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2201)at com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2225)at com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1391)at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:993)at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:852)... 36 morejava.lang.NullPointerExceptionat user.UserDAO.join(UserDAO.java:15)at org.apache.jsp.userJoinAction_jsp._jspService(userJoinAction_jsp.java:139)at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Unknown Source)

0
이우진 프로필

mysql에 한글이 모두 ?로 저장됩니다. 이우진 2018.05.23
mysql 캐릭터셋 모두 utf8으로 바꿨고 코드는 강의와 같게 했습니다.다른 고려할 사항이 있는지 알려주시면 감사하겠습니다.

1
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