org.hibernate.HibernateException: connnection proxy not usable after transaction completion
at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:42)
at $Proxy10.prepareStatement(Unknown Source)
at com.bjqa.crm.zizhu.ddgl.biz.DzfddDao.doUpdateDdzt(DzfddDao.java:714)
at com.bjqa.crm.zizhu.ddgl.biz.DzfddDao.OrderSettlement(DzfddDao.java:619)
at com.bjqa.crm.zizhu.ddgl.action.DdzfServletAction.doPost(DdzfServletAction.java:113)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
1.混用 hibernate + jdbc？
2、con = DBPool.getInstance().getConnection(); 建议直接使用session获取，也不需要自己关闭，由spring事务管理；
3、尽量不要混用，如果混用hibernate二级缓存可能会出现问题
4.统一用连接池管理
转载于:https://my.oschina.net/xiaominmin/blog/551082