errorPage500Api 함수 내에서 ex 가 null 로 return 되네요.

Question

errorPage500Api 함수 내에서 ex 가 null 로 return 되어 postman 결과가 json 으로 오지 않고 body 가 비었습니다. 오류는 아래와 같네요.   java.lang.NullPointerException: Cannot invoke "java.lang.Exception.getMessage()" because "ex" is null at hello.exception.servlet.ErrorPageController.errorPage500Api( ErrorPageController.java:39 ) ~[main/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:77 ) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43 ) ~[na:na] at java.base/java.lang.reflect.Method.invoke( Method.java:568 ) ~[na:na] at org.springframework.web.method.support .InvocableHandlerMethod.doInvoke( InvocableHandlerMethod.java:207 ) ~[spring-web-6.0.5.jar:6.0.5] at org.springframework.web.method.support .InvocableHandlerMethod.invokeForRequest( InvocableHandlerMethod.java:152 ) ~[spring-web-6.0.5.jar:6.0.5] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle( ServletInvocableHandlerMethod.java:117 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod( RequestMappingHandlerAdapter.java:884 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal( RequestMappingHandlerAdapter.java:797 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle( AbstractHandlerMethodAdapter.java:87 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.DispatcherServlet.doDispatch( DispatcherServlet.java:1081 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.DispatcherServlet.doService( DispatcherServlet.java:974 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.FrameworkServlet.processRequest( FrameworkServlet.java:1011 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at org.springframework.web.servlet.FrameworkServlet.doGet( FrameworkServlet.java:903 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at jakarta.servlet.http.HttpServlet.service( HttpServlet.java:705 ) ~[tomcat-embed-core-10.1.5.jar:6.0] at org.springframework.web.servlet.FrameworkServlet.service( FrameworkServlet.java:885 ) ~[spring-webmvc-6.0.5.jar:6.0.5] at jakarta.servlet.http.HttpServlet.service( HttpServlet.java:814 ) ~[tomcat-embed-core-10.1.5.jar:6.0] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:223 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:158 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.springframework.web.filter.RequestContextFilter.doFilterInternal( RequestContextFilter.java:100 ) ~[spring-web-6.0.5.jar:6.0.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:116 ) ~[spring-web-6.0.5.jar:6.0.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:185 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:158 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:101 ) ~[spring-web-6.0.5.jar:6.0.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:185 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:158 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:101 ) ~[spring-web-6.0.5.jar:6.0.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:185 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:158 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationDispatcher.invoke( ApplicationDispatcher.java:691 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationDispatcher.processRequest( ApplicationDispatcher.java:443 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationDispatcher.doForward( ApplicationDispatcher.java:367 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.ApplicationDispatcher.forward( ApplicationDispatcher.java:295 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.StandardHostValve.custom( StandardHostValve.java:372 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.StandardHostValve.throwable( StandardHostValve.java:296 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:153 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:92 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:78 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:357 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.coyote.http11.Http11Processor.service( Http11Processor.java:400 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.coyote.AbstractProcessorLight.process( AbstractProcessorLight.java:65 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process( AbstractProtocol.java:859 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.tomcat.util.net .NioEndpoint$SocketProcessor.doRun( NioEndpoint.java:1734 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.tomcat.util.net.SocketProcessorBase.run ( SocketProcessorBase.java:52 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1191 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:659 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run( TaskThread.java:61 ) ~[tomcat-embed-core-10.1.5.jar:10.1.5] at java.base/java.lang.Thread.run( Thread.java:833 ) ~[na:na] 2023-02-26T09:40:16.190+09:00 ERROR 54414 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[ localhost ] : Exception Processing ErrorPage[exceptionType=java.lang.RuntimeException, location=/error-page/500]   어떻게 수정가능할까요?

ryu · Answer

시간이 한참 지나서 보실지 모르지만, 리퀘스트에서 ex 가져올 때 스프링 부트가 3.xx버전이면 javax 가 아니라 Jakarta.~ 으로 가져와야 되나봐요. 저도 구글링하다가 찾아서 저는 해결됬는데, 같은 문제로 혹시 검색하시는 분이 있을까 해서 남깁니다. 저와 같은 문제가 아닐수도 있어요

OMG · Answer

안녕하세요. moonseok.shin 님, 공식 서포터즈 OMG입니다. 올리신 내용만으로는 확인이 어렵네요. 코드를 봐야 할 것 같습니다. 전체 프로젝트를 압축 해서 구글 드라이브로 공유해서 링크를 남겨주세요. 구글 드라이브 업로드 방법은 다음을 참고해주세요. 구글 드라이브 업로드 방법 링크 주의: 업로드시 권한 문제 꼭 확인해주세요 추가로 다음 내용도 코멘트 부탁드립니다. 1. 실행 방법을 알려주세요. 2. 어떻게 문제를 확인할 수 있는지 자세한 설명을 남겨주세요. 감사합니다.