ReyYang commented on issue #29401:
URL: 
https://github.com/apache/shardingsphere/issues/29401#issuecomment-1855466167

   exception stack
   
   ```java
   ### Cause: java.lang.NullPointerException
        
org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92)
        
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440)
        com.sun.proxy.$Proxy105.selectOne(Unknown Source)
        
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159)
        org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)
        
org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152)
        org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85)
        com.sun.proxy.$Proxy107.selectTotalCount(Unknown Source)
        
cn.tzt.service.impl.PushMessageServiceImpl.list(PushMessageServiceImpl.java:307)
        
cn.tzt.controller.PushMessageController.list(PushMessageController.java:84)
        
cn.tzt.controller.PushMessageController$$FastClassBySpringCGLIB$$cb568fa.invoke(<generated>)
        org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
        
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)
        
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
        
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
        
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95)
        
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
        
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
        
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)
        
cn.tzt.controller.PushMessageController$$EnhancerBySpringCGLIB$$330b3485.list(<generated>)
        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:190)
        
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
        
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
        
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
        
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
        
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
        
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
        
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
        
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
        
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
        
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
        
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
        
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
        
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
        
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        
org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
        
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
        
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
        
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
        
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
        
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
        
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
        
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
        
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
        
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
        
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
        
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
        
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.lang.Thread.run(Thread.java:748)
   ```


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