Hibernate day02（2）

package test;



import java.util.Date;
import java.util.List;

import model.Account;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.junit.Test;

import util.HibernateUtils;

public class AccountTest {

	@Test
	public void createTable(){
		//加载hibernate.cfg.xml文件并解析
		Configuration cfg=new Configuration().configure();
		SchemaExport se=new SchemaExport(cfg);
		//对生成的DDL语句进行格式化
		se.setFormat(true);
		se.setDelimiter(" ");
		se.setOutputFile("account.sql");
		se.create(true, true);
	}
	
	@Test
	public void add(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		
		Account account=new Account();
		
		account.setName("wanger");
		account.setAge(20);
		account.setScore(20.24);
		account.setBirthday(new Date());
				
		session.save(account);
				
		tr.commit();
	
		HibernateUtils.close(session);
		
		account.setId(11);
		account.setScore(98);
		account.setBirthday(new Date());
		account.setAge(22);
		account.setName("tianqi");
		Session session2=HibernateUtils.getSession();
		Transaction tr2=session2.beginTransaction();
		session2.merge(account);
		
		tr2.commit();
		
		HibernateUtils.close(session2);
	}
	
	
	@Test
	public void update(){
		//加载并解析hibernate.cfg.xml文件
		Configuration cfg=new Configuration().configure();
		//创建SessionFactory对象
		SessionFactory sessionFactory=cfg.buildSessionFactory();
		//创建Session接口负责CRUD
		Session session=sessionFactory.openSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		try{
			Account acc=(Account)session.get(Account.class, 1);
			System.out.println(acc.toString());
			acc.setAge(21);
			acc.setScore(87);
			session.update(acc);
			tr.commit();
		}catch(Exception ex){
			tr.rollback();
		}finally{
			session.close();
		}		
	}
	
	@Test
	public void update2(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		Account acc=(Account)session.get(Account.class, 1);
		System.out.println(acc.toString());
		
		tr.commit();
		HibernateUtils.close(session);
		
		
		acc.setName("zhangsan");
		acc.setAge(23);
		Session session2=HibernateUtils.getSession();
		//开启事务
		Transaction tr2=session2.beginTransaction();
		
		session2.update(acc);
		tr2.commit();
		
		HibernateUtils.close(session2);
				
	}
	
	@Test
	public void delete(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		Account acc=(Account)session.get(Account.class, 1);
		System.out.println(acc.getId());
		
		
		session.delete(acc);
		tr.commit();
		HibernateUtils.close(session);
		
	}
	
	@Test
	public void get(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		Account acc=(Account)session.get(Account.class, 1);
		System.out.println(acc.getId());
		
		tr.commit();
		HibernateUtils.close(session);
	}
	
	@Test
	public void load(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		Account acc=(Account)session.load(Account.class, 1);
		System.out.println(acc.getId());
		
		tr.commit();
		HibernateUtils.close(session);
	}
	
	@Test
	public void findAll(){
		Session session=HibernateUtils.getSession();
		//开启事务
		Transaction tr=session.beginTransaction();
		
		String sql="from Account";
		Query query=session.createQuery(sql);
		List<Account> list=(List<Account>)query.list();
		for(Account a:list){
			System.out.println(a);
		}
	
		
		tr.commit();
		HibernateUtils.close(session);
			
	}
}

package util;

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

public class HibernateUtils {

	private static SessionFactory factory;
	static{
		factory=new Configuration().configure().buildSessionFactory();
	}
	public static SessionFactory getFactory(){
		return factory;
	}
	
	public static Session getSession(){
		return factory.openSession();
	}
	
	public static void close(Session session){
		if(session!=null){
			session.close();
		}
		
	}
	
}