package online.shixun.model;import java.util.Date;import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;/*** 实体类* @author Tom**/
@Entity
@Table(name = "commodity")
public class Commodity {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)//主键自增private Integer id;@Column(name = "createDate")private Date createDate;//创建日期
    @Column(name = "described")private String describe;//商品描述
    @Column(name = "modifyDate")private Date modifyDate;//修改日期
    @Column(name = "name")private String name;//商品名称//构造函数public Commodity(){}//带参构造函数public Commodity(Date createDate,String describe,Date modifyDate,String name){this.createDate = createDate;this.describe = describe;this.modifyDate = modifyDate;this.name = name;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public Date getCreateDate() {return createDate;}public void setCreateDate(Date createDate) {this.createDate = createDate;}public String getDescribe() {return describe;}public void setDescribe(String describe) {this.describe = describe;}public Date getModifyDate() {return modifyDate;}public void setModifyDate(Date modifyDate) {this.modifyDate = modifyDate;}public String getName() {return name;}public void setName(String name) {this.name = name;}@Overridepublic String toString() {return "Commodity [id=" + id + ", createDate=" + createDate + ", describe=" + describe + ", modifyDate="+ modifyDate + ", name=" + name + "]";}}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration><session-factory><!-- 数据库连接四项driverclass,url,username,password --><property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property><property name="hibernate.connection.url">jdbc:mysql://localhost:3306/qsx_shop?characterEncoding=UTF-8</property><property name="hibernate.connection.username">root</property><property name="hibernate.connection.password">root</property><!-- Hibernate方言，Hibernateh会根据配置的方言产生对应的sql语句 --><property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property><!-- 是否显示sql --><property name="hibernate.show_sql">true</property><!-- 是否格式化sql --><property name="hibernate.format_sql">true</property><!-- 配置数据实体类 --><mapping class="online.shixun.model.Commodity" /></session-factory>
</hibernate-configuration>

package online.shixun.test;//import java.sql.Date;
import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;import online.shixun.model.Commodity;public class HibernateDemo {public static void main(String[] args) throws ParseException {//获取配置文件Configuration configuration = new Configuration().configure();//注册服务对象StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder();StandardServiceRegistry serviceRegistry = serviceRegistryBuilder.applySettings(configuration.getProperties()).build();//获取SessionFactorySessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);//获取sessionSession session = sessionFactory.openSession();//开启事务
        session.beginTransaction();//************开始操作*************////1. 利用 get 方法获取 id 为 1 的用户数据Commodity getCommodity = (Commodity) session.get(Commodity.class, 1);System.out.println("创建日期:" + getCommodity.getCreateDate() + "描述:" + getCommodity.getDescribe() + "修改日期:" + getCommodity.getModifyDate() + "名称:" + getCommodity.getName());//        Date date = new Date(0);String stringdate = "2019-05-07";Date date =  new SimpleDateFormat("YYYY-MM-DD").parse(stringdate);//2.增加商品
//        Commodity newCommodity = new Commodity(date,"电器1",date,"电饭锅2");
//        session.save(newCommodity);//3.删
//        Commodity getCommodity1 = (Commodity) session.load(Commodity.class, 2);
//        session.delete(getCommodity1);
//        session.getTransaction().commit();//4.改
//        Commodity getCommodity2 = (Commodity) session.get(Commodity.class, 1);
//        getCommodity2.setName("洗脸盆");
//        session.update(getCommodity2);
//        session.getTransaction().commit();//************结束操作*************////提交事务
        session.getTransaction();//关闭session
        session.close();//关闭SessionFactory
        sessionFactory.close();}
}