shur問題出現原因：開始以為是資料庫中身份證號碼不能為空，而現在設值為null。後來得知是身份證號碼輸入框輸入的字元有很多漢字

，超過了資料庫表中設定的18位。
解決方法：在提交時把輸入框中仍然保持預設值的輸入框清空，然後提交。

問題:
頁面訪問時發生錯誤:could not update: [org.eline.entity.user.User#1494]; nested exception is

org.hibernate.exception.DataException: could not update: [org.eline.entity.user.User#1494]

      org.springframework.dao.DataIntegrityViolationException: could not

update: [org.eline.entity.user.User#1494]; nested exception is org.hibernate.exception.DataException: could not

update: [org.eline.entity.user.User#1494]
 at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException

(SessionFactoryUtils.java:639)
 at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException

(HibernateTransactionManager.java:789)
 at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit

(HibernateTransactionManager.java:663)
 at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit

(AbstractPlatformTransactionManager.java:732)
 at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit

(AbstractPlatformTransactionManager.java:701)
 at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning

(TransactionAspectSupport.java:321)
 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke

(TransactionInterceptor.java:116)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept

(Cglib2AopProxy.java:635)
 at org.eline.service.user.UserManager$$EnhancerByCGLIB$$60d7eb2.save(<generated>)
 at org.eline.web.dis.StationAction.update(StationAction.java:223)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:440)
 at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:279)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
 at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept

(DefaultWorkflowInterceptor.java:163)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:249)
 at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept

(AnnotationValidationInterceptor.java:68)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept

(ConversionErrorInterceptor.java:122)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept

(StaticParametersInterceptor.java:148)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:93)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
 at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:148)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:128)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept

(ExceptionMappingInterceptor.java:176)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at org.apache.struts2.interceptor.MessageStoreInterceptor.intercept(MessageStoreInterceptor.java:204)
 at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
 at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
 at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468)
 at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter

(StrutsPrepareAndExecuteFilter.java:76)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal

(OpenSessionInViewFilter.java:198)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
 at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke

(FilterSecurityInterceptor.java:99)
 at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter

(FilterSecurityInterceptor.java:83)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke

(FilterSecurityInterceptor.java:109)
 at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter

(FilterSecurityInterceptor.java:83)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp

(SessionFixationProtectionFilter.java:67)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp

(ExceptionTranslationFilter.java:101)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp

(AnonymousProcessingFilter.java:105)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp

(RememberMeProcessingFilter.java:116)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp

(SecurityContextHolderAwareRequestFilter.java:91)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp

(BasicProcessingFilter.java:174)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:277)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp

(HttpSessionContextIntegrationFilter.java:235)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.concurrent.ConcurrentSessionFilter.doFilterHttp

(ConcurrentSessionFilter.java:99)
 at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
 at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
 at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
 at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
 at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
 at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
 at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
 at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
 at java.lang.Thread.run(Thread.java:662)
Caused by: org.hibernate.exception.DataException: could not update: [org.eline.entity.user.User#1494]
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2430)
 at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2312)
 at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2612)
 at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:96)
 at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions

(AbstractFlushingEventListener.java:298)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
 at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
 at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
 at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit

(HibernateTransactionManager.java:655)
 ... 122 more
Caused by: java.sql.DataTruncation: Data truncation
 at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:382)
 at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2816)
 at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2254)
 at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:631)
 at net.sourceforge.jtds.jdbc.JtdsStatement.processResults(JtdsStatement.java:584)
 at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL(JtdsStatement.java:546)
 at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeUpdate(JtdsPreparedStatement.java:505)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102)
 at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23)
 at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2408)
 ... 134 more