Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationEx

     Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null

HTTP Status 500 - Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException:

---

type 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: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
### The error may involve com.heitian.ssm.dao.UserDao.insertUser-Inline
### The error occurred while setting parameters
### SQL: INSERT INTO t_user(id,user_name,user_phone,user_email,user_pwd,pwd_salt,create_time,modify_time,is_delete)         VALUES (?,?,?,?,?,?,?,?,?)
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
; SQL []; Column 'id' cannot be null; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:980)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
### The error may involve com.heitian.ssm.dao.UserDao.insertUser-Inline
### The error occurred while setting parameters
### SQL: INSERT INTO t_user(id,user_name,user_phone,user_email,user_pwd,pwd_salt,create_time,modify_time,is_delete)         VALUES (?,?,?,?,?,?,?,?,?)
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
; SQL []; Column 'id' cannot be null; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' 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$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
	com.sun.proxy.$Proxy14.insert(Unknown Source)
	org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)
	org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:51)
	org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
	com.sun.proxy.$Proxy15.insertUser(Unknown Source)
	com.heitian.ssm.service.impl.UserServiceImpl.insertUser(UserServiceImpl.java:29)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
	com.sun.proxy.$Proxy20.insertUser(Unknown Source)
	com.heitian.ssm.controller.UserController.addUser(UserController.java:36)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:178)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:444)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:432)
	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:968)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null
	sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	com.mysql.jdbc.Util.getInstance(Util.java:386)
	com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1041)
	com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237)
	com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169)
	com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2617)
	com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2778)
	com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2834)
	com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2156)
	com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379)
	org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:169)
	org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:44)
	org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:69)
	org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:48)
	org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:105)
	org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:71)
	org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:152)
	org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:141)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
	com.sun.proxy.$Proxy14.insert(Unknown Source)
	org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)
	org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:51)
	org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
	com.sun.proxy.$Proxy15.insertUser(Unknown Source)
	com.heitian.ssm.service.impl.UserServiceImpl.insertUser(UserServiceImpl.java:29)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
	com.sun.proxy.$Proxy20.insertUser(Unknown Source)
	com.heitian.ssm.controller.UserController.addUser(UserController.java:36)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:178)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:444)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:432)
	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:968)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.78 logs.

---

Apache Tomcat/7.0.78

注;这是一个很小的问题，却卡了我两天，脑袋发蒙

解决办法：

1.首先看下你的sql语句有没有写错，创建表的时候有没有给id主键，自增长

2.就是可以在数据库可视化工具中看下自动增长有没有打勾，如果没有，打上勾如图：

重新启动代码，运行就OK了.