안녕하세요.
#yeoneeblog 여니입니다 :)
[오류 내용]
HTTP 상태 500 에러 - 내부 서버 오류
타입 : 예외 보고
메시지 : /loginAction.jsp (행: [6], 열: [0]) useBean의 class 속성을 위한 값 [user.User]은(는) 유효하지 않습니다.
설명 : 서버가 해당 요청을 충족시키지 못하게 하는 예기치 않은 조건을 맞닥뜨렸습니다.
예외 :
org.apache.jasper.JasperException: /loginAction.jsp (행: [6], 열: [0]) useBean의 class 속성을 위한 값 [user.User]은(는) 유효하지 않습니다.
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:292)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:115)
at org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1382)
at org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1183)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2431)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2437)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:467)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375)
at org.apache.jasper.compiler.Generator.generate(Generator.java:3607)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:258)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:392)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:368)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:352)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:603)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:833)
내가 만든 JSP 웹 사이트 접속은 올바르게 접속되는데 login 작업을 하면 에러가 발생하였다.
[문제 원인]
현재 실행되는 Tomcat의 java 파일 버전이 자동으로 15버전으로 바뀌어 있었다.
[해결 방법]
프로젝트 우클릭 > Properties > Project Facets > Java 버전을 본인 것에 맞게 재설정
저의 겨우 15로 설정되어 있었습니다. >> 1.8버전으로 수정하기
