userdao.java

实现在线书店的基本功能 应用了hibernate+jsp 技术采用了mvc三层设计模式

package mypack;


import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

/**
 * Hibernate Utility class with a convenient method to get Session Factory object.
 *
 * @author Administrator
 */
public class UserDao {
    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml) 
            // config file.
            sessionFactory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception. 
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
    public Customer userCheck(String name,String password)
    {
       Session session1=sessionFactory.openSession();
        Query query=session1.createQuery("from Customer as c where c.userName like:name and c.password like:password");
        query.setString("name", name);
        query.setString("password", password);
        Customer user=(Customer) query.uniqueResult();
        if(user!=null){
             return user;}
        else 
            return null;
        
    }
    public void insert(String name,String password,String email)
    {
        Session session=getSessionFactory().openSession();
        Transaction tx=session.beginTransaction();
        try
        {
            Customer customer=new Customer();
            customer.setUserName(name);
            customer.setPassword(password);
            customer.setEmail(email);
            session.save(customer);
            tx.commit();
        }catch(Exception ex)
        {
          
        }finally
        {
            session.close();
        }
        
    }
    
}