Hibernate基础语法

package erchou;

import java.awt.image.RescaleOp;
import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.criterion.Restrictions;

public class App{
	public static SessionFactory factory;
	static{
		factory = new Configuration().configure().buildSessionFactory();
	}
	public static void main(String[] args) {
	
		//创建session对象
	    Session session = factory.openSession();
	    //创建事务对象
	    Transaction tx = session.beginTransaction();
	    //------执行操作-------
	    /**
	     * 添加
	     */
	    //session.save(admin);
	    /**
	     * 更新
	     * 更新的时候必须要有主键
	     */
	    
	    /**
	     * 主键查询
	     */
	    //Admin ad = (Admin)session.get(Admin.class, 2);
	    //System.out.println(ad.toString());
	    /**
	     * HQL查询
	     */
	    /*Query q = session.createQuery("from Admin");
	    List<Admin> list = q.list();
	    for(Admin adm : list){
	    	System.out.println(adm.toString());
	    }*/
	    /****
	     * QBC查询  完全面向对象的查询
	     */
	    /*Criteria criteria = session.createCriteria(Admin.class);
	    criteria.add(Restrictions.eq("userName", "lisi"));
	    List<Admin> list = criteria.list();
	    System.out.println(list);*/
	    /***
	     * 本地SQL查询
	     */
	    SQLQuery sq = session.createSQLQuery("SELECT *FROM Admin where userName = 'lisi'").addEntity(Admin.class);
	    List<Admin> list = sq.list();
	    for(Admin ad:list){
	    session.delete(ad);
	    }
	    System.out.println(list);
	    //提交事务
	    tx.commit();
	    //关闭
	    session.close();
	}
}