我正在使用struts,hibernate和jsp开发我的网站。我曾打电话的函数,而在我的DAO页从我的操作页面这样的:java class cast异常错误
private List<Order> salesDetails = new ArrayList();
salesDetails = doctorDao.getInstance().getDoctorSalesDetails(SessionObj.getId(),activityGraph);
和吾道功能我写了这样的代码
public List getDoctorSalesDetails(int id,int activityGraph){
List<Order> doctorSalesDetails=new ArrayList();
try{
SessionFactory sessionFactory =
(SessionFactory) ServletActionContext.getServletContext().getAttribute(HibernateListener.KEY_NAME);
Session Hibernatesession = sessionFactory.openSession();
Hibernatesession.beginTransaction();
doctorSalesDetails = Hibernatesession.createSQLQuery("SELECT total_amount,created_at FROM `order` WHERE created_at > DATE_SUB(curdate(),INTERVAL "+activityGraph+" DAY) AND doctor_id = "+id+" GROUP BY created_at").list();
Hibernatesession.getTransaction().commit();
}catch(Exception e){
e.printStackTrace();
}
return doctorSalesDetails;
}
查询结果成功地在这里工作。问题是,当我从我的行动页面访问返回变量是这样的:
try{
for(Order o: salesDetails) {
System.out.println("Total amount="+o.getCreatedAt());
}
}catch(Exception e){
e.printStackTrace();
}
它会导致以下错误:
java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.myDrDirect.hbmobj.Order
at com.myDrDirect.doctor.action.DoctorDashBoardActivity.getDashBoardActivityDetails(DoctorDashBoardActivity.java:36)
可能是什么问题?
你是对的Hibernate SQLQUery函数返回不同格式的数据,即使我从订单表中检索数据。我想我需要改变查询。不管怎样,谢谢。 – anoop 2011-12-26 14:57:56
欢迎来到Anoop .. – Sabya 2011-12-26 16:34:47