创建Hibernate项目步骤

创建项目（java  project / dynamic web project） 

添加需要的jar包

一、在项目上单击右键，选择New  ——》other   

二、点击下面的Hibernation 创建hibernate.cfg.xml文件

 

三、数据库加载的数据，在Session factory name  处可以为空，不必创建名称

 数据库URL后面必须填写数据库项目名称

 

四、在eclipse页面上面显示hibernate视窗

 

四、在eclipse页面上面显示hibernate视窗 

五、在项目上右键，创建reveng.xml文件  直接点击next 

 

六、不用点击，直接用默认的方式，点击next 

七、创建映射类对应的hbm.xml文件 

 

八、反向生成对应的类 

下图完成之后点击apply，然后选择上面的Exporters

选择下图的Domain code  和   Hibemate XML Mappings 

配置文件

<?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 name="sessionFactory">
    <property name="hibernate.show_sql">true</property>
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="hibernate.connection.password">tiger</property>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
        <property name="hibernate.connection.username">scott</property>
        <property name="hibernate.default_schema">scott</property>
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <mapping resource="com/db/entity/User.hbm.xml"/> 
    </session-factory>
</hibernate-configuration>

 user 类

package com.db.entity;
public class User {
	private Long id;
	private String name;
	private String password;
	
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public User(Long id, String name, String password) {
		super();
		this.id = id;
		this.name = name;
		this.password = password;
	}
	public User() {
		super();
	}
	
}

user的映射文件

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2018-11-1 17:27:33 by Hibernate Tools 3.5.0.Final -->
<hibernate-mapping>
    <class name="com.db.entity.User" table="USERS">
        <id name="id" type="java.lang.Long">
            <column name="ID" />
            <generator class="assigned" />
        </id>
        <property name="name" type="java.lang.String">
            <column name="NAME" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="PASSWORD" />
        </property>
    </class>
</hibernate-mapping>

 对数据库对应数据表进行增删改操作：

package com.db.test;

import java.util.List;

import javax.jws.soap.SOAPBinding.Use;

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

import com.db.entity.User;

public class HibernateTest1 {
public static void main(String[] args) {
	//add();
	//delete();
	//update();
	//doQueryAll();
	doQuery();
	
}
//增加
public static  void  add(){
	Configuration con=new Configuration().configure();
	//创建SessionFactory
	SessionFactory sessionFactory=con.buildSessionFactory();
	//打开一个会话  与数据库
	Session session=sessionFactory.openSession();
	User user=new User(98L,"gg","123456");
	Transaction ts=session.beginTransaction();
	session.save(user);
	ts.commit();
	session.close();
	sessionFactory.close();
}
//删除
public static void delete(){
	Configuration con=new Configuration().configure();
	//创建SessionFactory
	SessionFactory sessionFactory=con.buildSessionFactory();
	//打开一个会话  与数据库
	Session session=sessionFactory.openSession();
	User user=(User) session.get(User.class, 98L);
	//事务开始
	Transaction tx=session.beginTransaction();
	session.delete(user);
	//提交
	tx.commit();
	session.close();
	sessionFactory.close();
}
//修改
public static void update(){
	Configuration conn=new Configuration().configure();
	//单例模式   创建SessionFactory
	Session session=conn.buildSessionFactory().openSession();
	//事务开始
	User user=(User) session.get(User.class, 14L);
	//修改什么就重新设置属性值
	user.setName("xiaoming");
	Transaction tx=session.beginTransaction();
	//提交
	session.update(user);
	tx.commit();
	session.close();
}
//查询所有数据
   public static void doQueryAll(){
	   Configuration conn=new Configuration().configure();
	   //打开session连接
	   Session session=conn.buildSessionFactory().openSession();
	 //事务开始
	   Transaction tx=session.beginTransaction();
	   //创建查询
	   Query query= session.createQuery("from User");  //from 后面跟映射的类名
	   List<User> list=query.list(); 
	   //提交
	   tx.commit();
	   //关闭session
	   session.close();
		for (int i = 0; i < list.size(); i++) {
			System.out.println(list.get(i).getName()+" "+list.get(i).getPassword());	
		}
   }
   public static void doQuery(){
	   Configuration conn=new Configuration().configure();
	   //打开session连接
	   Session session=conn.buildSessionFactory().openSession();
	 //事务开始
	   Transaction tx=session.beginTransaction();
	   //创建查询
	   User user= (User) session.get(User.class,14L );
	   //提交
	   tx.commit();
	   //关闭session
	   session.close();
	   System.out.println(user.getName()+" "+user.getPassword());
   }

}