问题如下：
    Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not insert: [entityBean.Customer_duobiaoyingshe]; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not insert: [entityBean.Customer_duobiaoyingshe]
javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not insert: [entityBean.Customer_duobiaoyingshe]
   哪位高人请不吝赐教！

could not insert: [entityBean.Customer_duobiaoyingshe]
持久化错误，仔细检查下持久化配置