userdaoimpl.java

该项目基于mvc模式

package com.sunny.test.dao.impl;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.sunny.test.dao.UserDao;
import com.sunny.test.model.Admin;

public class UserDaoImpl extends HibernateDaoSupport implements UserDao
{

	public String checkName(Admin user) throws Exception
	{
		String flag ="用户名有效";
		try
		{
			Session session = this.getSession();
			String name = user.getUsername();
			if(name == null)
			{
				flag = "用户名不能为空";
				return flag;
			}
			Query query = session.createQuery("FROM Admin WHERE username=? ");
			query.setString(0, name);
			List list = query.list();
			if(list.size()<=0)
			{
				flag="用户名不存在";
			}
			
			/*Object o =query.uniqueResult();
			if(o!=null)
			{
				
			}
			else
				flag="用户名不存在";*/
			session.beginTransaction().commit();
			session.close();
		}
		catch(Exception e)
		{
			flag = e.toString();
			e.printStackTrace();
		}
		return flag;
	}

	public boolean validate(String username, String password)
	{
		String param[] = {username,password};
		List list = getHibernateTemplate().find("from Admin where username=? and password=?",param);
		return list.size()>0;
	}

}