Hibernate.iterate中明明拿到了结果，且hasNext()为true，但next()就是会报错，提示：
You can't operate on a closed ResultSet!!!
抛异常的代码：
((Long) getHibernateTemplate().iterate(query).next()).intValue()
异常信息中提示ResultSet已关闭：
Caused by: org.hibernate.exception.GenericJDBCException: could not get next iterator result
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:140)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:128)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at org.hibernate.impl.IteratorImpl.next(IteratorImpl.java:161)
at com.yotoo.crm.dao.VisitLogDaoImp.findCountByCriteria(VisitLogDaoImp.java:98)
at com.yotoo.crm.service.impl.VisitLogServiceImp.findAllVisitLog(VisitLogServiceImp.java:46)
at com.yotoo.crm.service.impl.VisitLogServiceImp$$FastClassByCGLIB$$4353dcb1.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.aspectj.AspectJAfterThrowingAdvice.invoke(AspectJAfterThrowingAdvice.java:55)
... 34 more
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 结果集已关闭。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:130)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.checkClosed(SQLServerResultSet.java:211)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getLong(SQLServerResultSet.java:2058)
at org.apache.commons.dbcp.DelegatingResultSet.getLong(DelegatingResultSet.java:278)
at org.apache.commons.dbcp.DelegatingResultSet.getLong(DelegatingResultSet.java:278)
at org.hibernate.type.descriptor.sql.BigIntTypeDescriptor$2.doExtract(BigIntTypeDescriptor.java:61)
at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:64)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:253)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:249)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:229)
at org.hibernate.impl.IteratorImpl.next(IteratorImpl.java:140)
... 41 more
问题原因：
调查了半天，还好一位网友的贴子帮我解决了问题，原来Hibernate中如果没有进行事务的配置，resultSet会关闭掉。
解决方法：
在spring的配置文件中添加事务的配置（如果你已经添加，那就不用了），然后在调用出错的Service或DAO中开启事务（添加一个注解：@Transaction）
帮我解决问题的是这个贴子，谢谢这位兄台：
http://my.oschina.net/yotoo/blog/264341
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