druid执行sql为什么抛出异常：java.sql.SQLException: statement is closed

DEBUG SQL:104 : 
    delete 
    from
        qdexam.dbo.tbl_interest 
    where
        id=?
[qdksService_log]  2016-01-28 18:19:57  INFO AbstractBatchImpl:195 : HHH000010: On release of batch it still contained JDBC statements
[qdksService_log]  2016-01-28 18:19:57 ERROR AbstractBatchImpl:167 : HHH000352: Unable to release batch statement...
[qdksService_log]  2016-01-28 18:19:57 ERROR AbstractBatchImpl:168 : HHH000246: SQLException escaped proxy
java.sql.SQLException: statement is closed
    at com.alibaba.druid.pool.DruidPooledStatement.checkOpen(DruidPooledStatement.java:75)
    at com.alibaba.druid.pool.DruidPooledStatement.clearBatch(DruidPooledStatement.java:512)
    at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.releaseStatements(AbstractBatchImpl.java:163)
    at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.release(AbstractBatchImpl.java:197)
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.close(JdbcCoordinatorImpl.java:174)
    at org.hibernate.engine.transaction.internal.TransactionCoordinatorImpl.close(TransactionCoordinatorImpl.java:277)
    at org.hibernate.internal.SessionImpl.close(SessionImpl.java:353)
    at org.springframework.orm.hibernate4.SessionFactoryUtils.closeSession(SessionFactoryUtils.java:119)
    at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:161)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    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:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    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 de.javakaffee.web.msm.RequestTrackingContextValve.invoke(RequestTrackingContextValve.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:124)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:124)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:124)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:124)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:124)
    at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:156)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:619)