hibernate初学helloworld

hibernate.cfg.xml

    
    
    root
    root
    com.mysql.jdbc.Driver
    jdbc:mysql://localhost:3306/scott
    
    org.hibernate.dialect.MySQLInnoDBDialect
    
    true
    
    true
    
    update
    
    
    

持久化类

package cn.ls.vo;

import java.sql.Date;

public class News {
    private Integer id;
    private String title;
    @Override
    public String toString() {
        return "News [id=" + id + ", title=" + title + ", author=" + author + ", date=" + date + "]";
    }
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getAuthor() {
        return author;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
    private String author;
    private Date date;
    public News() {
    }

    public News(String title, String author, Date date) {
        super();
        this.title = title;
        this.author = author;
        this.date = date;
    }

}

News.hbm.xml

Test类

package cn.ls.vo;

import static org.junit.Assert.*;

import java.util.Date;



import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class HibernateTest {

    @Before
    public void setUp() throws Exception {
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void test() {
        //1.创建一个SessionFactory对象
        SessionFactory sf=null;
            //1)创建configuretion对象，对应hibernate的基本配置信息和对象关系映射信息
        Configuration con= new Configuration().configure();
        //4.0前这样创建
        //sf =con.buildSessionFactory();
            //2)创建一个ServiceRegistry对象，hibernate的任何配置和服务都需要在该对象中注册后有效
        Configuration configuration=new Configuration().configure();
        ServiceRegistry service=
             new ServiceRegistryBuilder().applySettings(configuration.getProperties())
                        .buildServiceRegistry();
        sf=configuration.buildSessionFactory(service);
        //2.创建一个session对象
        Session session=sf.openSession();
        //3.开启事务
        Transaction tr=session.beginTransaction();
        //4.执行保存操作
        News news= new News("java","ATGUIGU",(java.sql.Date) new Date());
        //5.提交事务
        tr.commit();
        //6关闭session对象
        session.close();
        //7.关闭SessionFactory对象
        sf.close();
    }

}