Hibernate报 a different object with the same identifier value was already

写给自己看的，不喜勿喷

两次查询，然后进行插入操作报错

 this.coldocDao.saveObject(docMaster);
 this.coldocDao.flush();//flush()很关键

          或者直接sql操作：

this.bulkUpdateSql(sql, false);


public int bulkUpdateSql(String sql, boolean fireExeSqlEvent) {
		Query query = this.getSession().createSQLQuery(sql);
		int result = query.executeUpdate();
		if (emergencyHibernateListener != null)// 单写版本不执行
			if (fireExeSqlEvent) {
				emergencyHibernateListener.onExecuteSql(new ExecuteSqlEvent(
						sql, null));
			}
		return result;
	}