spring 게시판 삭제좀 도와주세요

Question

${ b.boardTitle }작성자프로필${ b.boardWriter } ${ b.boardContent } 태그1 태그2 태그3
좋아요개수 XXX작성일자 : ${ b.enrolldate }

이렇게 게시글을 클릭하고 @RequestMapping("detail.fr") public ModelAndView selectBoard(ModelAndView mv,int bno) { if(boardService.increaseCount(bno)>0) { mv.addObject("b",boardService.selectBoard(bno)).setViewName("board/FreeBoardDetail"); }else { mv.addObject("errorMsg","상세조회실패~").setViewName("common/errorPage"); } return mv; }이 컨트롤러를 통해 해당 게시글의 페이지를 가는데까지는 성공했습니다. bno도 정상적으로 넘어갔구요 근데 그 게시글에 들어가서 게시글을 삭제하려고 했습니다. 자유게시판 글쓰기
자유롭게 이야기해봐요~

${ b.boardTitle }조회수 : ${ b.viewCount }작성일자 : ${ b.enrolldate }
작성자 : ${ b.boardWriter }

${ b.boardContent }

태그1 태그2 태그3

좋아요개수

수정하기 삭제하기

그리고 controller를 통해서@RequestMapping("delete.fr") public String deleteBoard(Integer bno, String filePath,HttpSession session) { if(boardService.deleteBoard(bno)> 0) { if(filePath.equals("")) { new File(session.getServletContext().getRealPath(filePath)).delete(); } session.setAttribute("alertMsg", "삭제 성공"); return "redirect:list.free"; }else { session.setAttribute("errorMsg", "삭제 실패"); return "common/errorPage"; } }를 했는데java.lang.NullPointerException at com.project.withpet.board.controller.BoardController.deleteBoard(BoardController.java:112) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1070) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:514) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:582) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:181) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:181) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156) 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:494) 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:682) 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:617) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:932) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1695) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) 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.lang.Thread.run(Thread.java:750)오류가 뜨면서 bno가 자꾸 null이라고 뜨네요...어디가 잘못된걸까요?

뎅이 · Answer

if(filePath.equals("")) { <== "" 이면 실행인데요? 그리고 filePath를 받는 어노테이션이 안붙어 있네요.

spring 게시판 삭제좀 도와주세요

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