userdaoimp.java

参照视频编写的实例

package com.test;

import java.util.List;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.test.Hibernate.User;

public class UserDAOImp extends HibernateDaoSupport implements UserDAO {

	private static String hql = "from User u where u.username=? and password=?";

	public boolean isValidUser(String username, String password) {

		String[] userlist=new String[2];
		userlist[0]=username;
		userlist[1]=password;
//		List userList = this.getHibernateTemplate().find(hql, (Object)username);
		List userList = this.getHibernateTemplate().find(hql,userlist);

		if (userList.size() > 0) {

			return true;

		}

		return false;

	}

	public boolean addUser(User user) {
		try {
			this.getHibernateTemplate().save(user);
		} catch (Exception e) {
			System.out.println(e.getMessage());
			return false;
		}
		return true;

	}

	public List findAllUser() {
		List users=this.getHibernateTemplate().find("from User u");
		
		if(users.size()>0)
			return users;
		return null;
	}
	
	public boolean delUser(Integer lid) {
		try {
			User user=(User)this.getHibernateTemplate().load(User.class,lid);
			System.out.println("user="+user);
			this.getHibernateTemplate().delete(user);
		} catch (Exception e) {
			System.out.println(e.getMessage());
			return false;
		}
		return true;
	}

}