Hibernate用getCurrentSession（）增删改查

最新推荐文章于 2020-06-13 01:47:01 发布

转载最新推荐文章于 2020-06-13 01:47:01 发布 · 2.9k 阅读

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本文详细介绍了UserDaoImpl类的功能实现，包括用户登录验证、查询所有用户、单个用户查询、添加用户、删除用户及更新用户等核心操作，并提供了具体的Hibernate HQL查询语句和事务处理方式。

public class UserDaoImpl implements UserDao {  
    @Autowired  
    private SessionFactory sessionFactory;  
    //登录  
    public User selectUser(User user) throws Exception {  
        Query query = sessionFactory.getCurrentSession().createQuery("from User u where u.name=? and u.password=?");  
        query.setString(0, user.getName());  
        query.setString(1, user.getPassword());  
        List list = query.list();  
        if(list==null||list.size()==0){  
            throw new RuntimeException("查询失败");  
        }  
        return list.get(0);  
    }  

    //查询所有  
    public List getAllUsers() throws Exception {  
        Query query = sessionFactory.getCurrentSession().createQuery("from User");  
        List list = query.list();  
        return list;  
    }  

    //单个查询  
    public User getUser(Integer id) throws Exception {  
        return (User) sessionFactory.getCurrentSession().createQuery("from User u where u.id ="+id).uniqueResult();  
    }  

    //添加用户  
    public void addUser(User user) throws Exception {  
        System.out.println("11111111111111111"+user.getName());  
        sessionFactory.getCurrentSession().save(user);  
    }  

    //删除用户  
    public void delUser(Integer id) throws Exception {  
        sessionFactory.getCurrentSession().createQuery("delete User u where u.id="+id).executeUpdate();       

    }  

    //修改用户  
    public void updateUser(User user) throws Exception {  
         Session session = sessionFactory.getCurrentSession();  
         session.beginTransaction();  
         String hql = ("update User u set u.name = ?,u.password = ?,u.loginDate = ? where u.id = ?");    
         Query query = session.createQuery(hql);  
         query.setParameter(0, user.getName());  
         query.setParameter(1, user.getPassword());  
         query.setParameter(2, user.getLoginDate());  
         query.setParameter(3, user.getId());  
         query.executeUpdate();  
         session.getTransaction().commit();               
    }  
}