MySQLIntegrityConstraintViolationException：列不能爲空 - 查找表

我有一個查詢表「婚姻狀況」和「員工」表。MySQLIntegrityConstraintViolationException：列不能爲空 - 查找表

定義到員工的外鍵爲該員工定義婚姻狀態，該欄接受空值（不是必需的）。

現在我正在使用hibernate和spring mvc。問題是，我從下拉列表中爲該員工選擇婚姻狀況，但它試圖在婚姻狀態表中插入一條新記錄，我不需要這樣做，我只需要一位新員工參考婚姻狀況？

public class MaritalStatus { 

    @Id 
    @Column(name = "id") 
    @Basic(optional=false) 
    @GeneratedValue(strategy=GenerationType.AUTO) 
    private Integer maritalStatusId; 

    @Basic(optional=false) 
    @Column(name="description") 
    private String maritalStatusDescription; 

    @OneToMany 
    @JoinColumn(name="fkMaritalStatus") 
    private List<Employee> employeeList; 

    ....other getters/setters 
} 

//////////EMPLOYEE 
@Entity 
@Table(name="employee") 
public class Employee { 

    @Id 
    @Column(name="pk_id") 
    @Basic(optional=false) 
    @GeneratedValue(strategy=GenerationType.AUTO) 
    private Integer employeeId; 

    @ManyToOne(cascade=CascadeType.ALL) 
    @JoinColumn(name="fk_marital_status", insertable=false, updatable=false) 
    private MaritalStatus fkMaritalStatus; 

    ....other columns and getters/setters 
}

這裏是例外

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'description' cannot be null 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 
at java.lang.reflect.Constructor.newInstance(Unknown Source) 
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) 
at com.mysql.jdbc.Util.getInstance(Util.java:386) 
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1040) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4074) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4006) 
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2468) 
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2629) 
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2719) 
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) 
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2450) 
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2371) 
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2355) 
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:133) 
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96) 
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58) 
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2966) 
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3477) 
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81) 
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362) 
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:203) 
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:183) 
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:167) 
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:321) 
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:286) 
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192) 
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) 
at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:734) 
at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:726) 
at org.hibernate.engine.spi.CascadingAction$5.cascade(CascadingAction.java:258) 
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:387) 
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:330) 
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:208) 
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:165) 
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:424) 
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:263) 
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192) 
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204) 
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189) 
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49) 
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) 
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:763) 
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:755) 
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:751) 
at com.nassar.doa.impl.EmployeeDAOImpl.add(EmployeeDAOImpl.java:27) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96) 
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260) 
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
at com.sun.proxy.$Proxy43.add(Unknown Source) 
at com.nassar.service.impl.EmployeeServiceImpl.add(EmployeeServiceImpl.java:20) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96) 
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260) 
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
at com.sun.proxy.$Proxy44.add(Unknown Source) 
at com.nassar.controller.EmployeeController.addEmployee(EmployeeController.java:70) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219) 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686) 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) 
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
at java.lang.Thread.run(Unknown Source)

任何幫助，將不勝感激......

來源

2014-11-02 Omar.Nassar

當MaritalStatus.maritalStatusId成爲null則Hibernate希望這是一個新的實例。 - 這就是它試圖插入「新」項目的原因。

解決方案：請嘗試將Employee.fkMaritalStatus改爲null。那麼員工將沒有物質狀態。

來源

2014-11-02 11:30:19 Ralph

認真我試圖此溶液如果（employee.getFkMaritalStatus（）getMaritalStatusId（）== NULL） \t \t \t employee.setFkMaritalStatus（空）; session.getCurrentSession（）。save（employee）; 它工作完美，但我認爲有更好的解決方案？ hibernate提供了一個嗎？ – 2014-11-02 11:38:11

Omar.Nassar：這是最直接的解決方案 - 嘗試從休眠的角度來看待這個問題。 - 你有一個實體引用另一個實體id = null（這意味着，但尚未保存），現在你保存它。 - 重點在於，hibernate試圖保存你的對象，當有一個對象時，hibernate會嘗試保存它。 – Ralph 2014-11-02 12:32:19

感謝您的聲明。 – 2014-11-02 12:51:29

MySQLIntegrityConstraintViolationException：列不能爲空 - 查找表

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