살려주세요 DB랑 연결되는 와중에 생기는 문제인거 같은데 모르겠어요

Question

로그인을 하려고 했는데 안되서 이것저것 다 막고 테스트 했는데도 같은 오류가 나서 물어봅니다.jdk 1.7 mybatis 3.4.0 mybatis-spring 1.3.2 쓰고있습니다컨트롤러 @RequestMapping("/login") public @ResponseBody String login(@RequestParam Map map, HttpSession session) { loginService.execute(map); session.setAttribute("login", map.get("id")); return "1"; }서비스 public void execute(Map map) { String i = "id"; boardMapper.login(i); }매퍼 인터페이스 public void login(String i);매퍼 xml 아래와같은 에러가 나요. 오류찾아보고자 줄이다 줄이다 여기까지 줄였는데도요.7월 12, 2023 9:56:41 오전 org.apache.catalina.core.StandardWrapperValve invoke심각: 경로 []의 컨텍스트 내의 서블릿 [appServlet]을(를) 위한 Servlet.service() 호출이, 근본 원인(root cause)과 함께, 예외 [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:### Error querying database. Cause: java.lang.NullPointerException### The error may exist in file [D:\workspace\.metadata\.plugins\org.eclipse.wst.server.core mp0\wtpwebapps est\WEB-INF\classes est\mapper\BoardMapper.xml]### The error may involve test.mapper.BoardMapper.loginThe error occurred while executing a query### Cause: java.lang.NullPointerException]을(를) 발생시켰습니다.java.lang.NullPointerExceptionat org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:85)at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:70)at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:337)at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84)at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325)at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:434)at com.sun.proxy.$Proxy12.selectOne(Unknown Source)at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:167)at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75)at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53)at com.sun.proxy.$Proxy22.login(Unknown Source)at test.service.LoginService.execute(LoginService.java:28)at test.controller.BoardController.login(BoardController.java:70)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:854)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:765)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)at javax.servlet.http.HttpServlet.service(HttpServlet.java:515)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)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:51)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:483)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$SocketProcessor.doRun(NioEndpoint.java:1694)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)

작별왕바이킹 · Accepted Answer

데이터소스 확인해보세요.

으악 또 · Answer

보기에는 널포인트 에러 나올만 한데는 없어 보이는데 리플레쉬 한번 해보고 다시 해보셈스프링 부트면 자동 리플레쉬 안되어 있음 수동으로 해야되여

살려주세요 DB랑 연결되는 와중에 생기는 문제인거 같은데 모르겠어요

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