Spring 페이징 처리중에 NullPointerException 오류 도와주세요

Question

spring 페이징 처리를 하는데 자꾸 nullpointException 오류가 뜨는데 어디가 문제인지 모르겠네요 ㅜㅜ Exception Report Message Request processing failed; nested exception is java.lang.NullPointerException Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) Root Cause java.lang.NullPointerException com.Finally.Service.impl.BoardServiceImpl.listCriteria(BoardServiceImpl.java:77) com.Finally.controller.BoardController.listPage(BoardController.java:45) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:111) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:806) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:729) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) boardController @RequestMapping(value = "list.do", method = RequestMethod.GET) public void listPage(@ModelAttribute("cri") Criteria cri, Model model) throws Exception { List list = boardService.listCriteria(cri); model.addAttribute("list", list); PageMaker pageMaker = new PageMaker(); pageMaker.setCri(cri); pageMaker.setTotalCount(boardService.listCount()); model.addAttribute("pageMaker", pageMaker); }boardDAO List listCriteria(Criteria cri) throws Exception; public int listCount() throws Exception;boardDAOImpl @Override public List listCriteria(Criteria cri) throws Exception { return SqlSession.openSession().selectList("com.Finally.mapper.board.listCriteria",cri); } // @Override public int listCount() throws Exception { return SqlSession.openSession().selectOne("com.Finally.mapper.board.countBoardList"); } boardService public List listCriteria(Criteria cri) throws Exception; // public int listCount() throws Exception; ---- boardServiceImpl @Override public List listCriteria(Criteria cri) throws Exception{ return boardDao.listCriteria(cri); } @Override public int listCount() throws Exception { return boardDao.listCount(); } public class Criteria { private int page; private int perPageNum; public Criteria() { this.page=1; this.perPageNum=10; } public int getPage() { return page; } public void setPage(int page) { if(page<=0) { this.page=1; }else { this.page=page; } } public int getPerPageNum() { return perPageNum; } public void setPerPageNum(int pageCount) { int cnt=this.perPageNum; if(pageCount != cnt) { this.perPageNum=cnt; }else { this.perPageNum=pageCount; } } } public class PageMaker { private Criteria cri; private int totalCount; private int startPage; private int endPage; private boolean prev; private boolean next; private int displayPageNum = 10; public Criteria getCri() { return cri; } public void setCri(Criteria cri) { this.cri = cri; } public int getTotalCount() { return totalCount; } public void setTotalCount(int totalCount) { this.totalCount = totalCount; calcData(); } private void calcData() { endPage = (int) (Math.ceil(cri.getPage() / (double) displayPageNum) * displayPageNum); startPage = (endPage - displayPageNum) + 1; if(startPage <= 0) startPage = 1; int tempEndPage = (int) (Math.ceil(totalCount / (double) cri.getPerPageNum())); if (endPage > tempEndPage) { endPage = tempEndPage; } prev = startPage == 1 ? false : true; next = endPage * cri.getPerPageNum() < totalCount ? true : false; } . . . . } boardMapper list.jsp

' role="button" class="btn btn-default btn-sm">

> ' role="button" class="btn btn-default btn-sm">${idx }

0 }">

' role="button" class="btn btn-default btn-sm">

성일 · Answer

boardService.listCriteria(cri); cri가 null이래요

도각도각 · Answer

boardService가 null일거 같은데요.

Spring 페이징 처리중에 NullPointerException 오류 도와주세요

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