org.springframework.web.util.NestedServletException: Request processing failed; nested exception is

qq_27865453 2022-06-23 23:32:23

就这个一登陆就跳转页面错误500，球球大神们这是为啥。

ype Exception report

message Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException:

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
### The error may involve cn.bdu.ele.dao.UserMapper.insert-Inline
### The error occurred while setting parameters
### SQL: insert into user (username, password)     values (?, ?)
### Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
; SQL []; Column 'username' cannot be null; nested exception is java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
### The error may involve cn.bdu.ele.dao.UserMapper.insert-Inline
### The error occurred while setting parameters
### SQL: insert into user (username, password)     values (?, ?)
### Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
; SQL []; Column 'username' cannot be null; nested exception is java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
	org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:85)
	org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
	org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
	org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	com.sun.proxy.$Proxy14.insert(Unknown Source)
	org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
	org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57)
	org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	com.sun.proxy.$Proxy15.insert(Unknown Source)
	cn.bdu.ele.service.impl.AdminServiceImpl.userReg(AdminServiceImpl.java:42)
	cn.bdu.ele.service.impl.AdminServiceImpl.userLogin(AdminServiceImpl.java:21)
	cn.bdu.ele.controller.AdminController.loginPost(AdminController.java:24)
	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:205)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

java.sql.SQLIntegrityConstraintViolationException: Column 'username' cannot be null
	com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:117)
	com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
	com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)
	com.mysql.cj.jdbc.ClientPreparedStatement.execute(ClientPreparedStatement.java:371)
	org.apache.commons.dbcp2.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:198)
	org.apache.commons.dbcp2.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:198)
	sun.reflect.GeneratedMethodAccessor39.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:59)
	com.sun.proxy.$Proxy24.execute(Unknown Source)
	org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:46)
	org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:74)
	org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50)
	org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
	org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
	org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
	org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:185)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	com.sun.proxy.$Proxy14.insert(Unknown Source)
	org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
	org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57)
	org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	com.sun.proxy.$Proxy15.insert(Unknown Source)
	cn.bdu.ele.service.impl.AdminServiceImpl.userReg(AdminServiceImpl.java:42)
	cn.bdu.ele.service.impl.AdminServiceImpl.userLogin(AdminServiceImpl.java:21)
	cn.bdu.ele.controller.AdminController.loginPost(AdminController.java:24)
	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:205)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.35 logs.

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