mysql-connector-java.jar驱动包版本过低导致错误。
更新驱动包版本即可！

74997 [btpool0-4] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 0, SQLState: 22001
74997 [btpool0-4] ERROR org.hibernate.util.JDBCExceptionReporter - Data truncation: Incorrect datetime value: '' for column 'createtime' at row 1
74997 [btpool0-4] ERROR org.hibernate.event.def.AbstractFlushingEventListener - Could not synchronize database state with session
org.hibernate.exception.DataException: Could not execute JDBC batch update
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:249)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:139)
    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 qflag.base.entity.persister.HibernatePersister.create(Unknown Source)
    at qflag.base.entity.persister.PersisterManager.createObject(Unknown Source)
    at qflag.base.entity.PersistObject.create(Unknown Source)
    at qflag.base.entity.BaseEntity.create(Unknown Source)
    at qflag.biz.base.web.action.EntityAction.save(Unknown Source)
    at qflag.ucstar.base.action.UcstarEntityAction.save(Unknown Source)
    at qflag.ucstar.sso.oa.SSOOAEntityAction.save(Unknown Source)
    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.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:302)
    at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:170)
    at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
    at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
    at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
    at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
    at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)
    at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:229)
    at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
    at qflag.ucstar.filter.UrlCheckFilter.doFilter(UrlCheckFilter.java:80)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
    at qflag.ucstar.plugin.sitemesh.UcPageFilter.parsePage(Unknown Source)
    at qflag.ucstar.plugin.sitemesh.UcPageFilter.doFilter(Unknown Source)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
    at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(Unknown Source)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
    at org.jivesoftware.admin.AuthCheckFilter.doFilter(Unknown Source)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
    at qflag.ucstar.filter.UcstarThreadLocalFilter.doFilter(Unknown Source)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:324)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
    at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Caused by: java.sql.BatchUpdateException: Data truncation: Incorrect datetime value: '' for column 'createtime' at row 1
    at com.mysql.jdbc.ServerPreparedStatement.executeBatch(ServerPreparedStatement.java:648)
    at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)
    ... 54 more
74998 [btpool0-4] ERROR debug - Could not execute JDBC batch update