Hibernate简单实例

1、配置hibernate.cfg.xml文件(名字必须这么写)：

<?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>

<!--数据库连接设置 -->

<property name="connection.driver_class">com.mysql.jdbc.Driver</property>

<property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>

<property name="connection.username">root</property>

<property name="connection.password">123456</property>

<!-- 方言 -->

<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>

<!-- 控制台显示SQL -->

<property name="show_sql">true</property>

<!-- 自动更新表结构 -->

<property name="hbm2ddl.auto">update</property>

<mapping resource="com/java1234/model/Student.hbm.xml"/>

</session-factory>

</hibernate-configuration>

2、配置Student.hbm.xml文件：

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="com.java1234.model">

<class name="Student" table="t_student">

<id name="id" column="stuId">    <generator class="native"></generator>   </id>

<property name="name"></property>

</class>

</hibernate-mapping>

3、配置好1、2步骤后写model 文件Student.java

package com.java1234.model;

public class Student {

private long id;  private String name;

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;  }

}

--第四步：测试：

package com.java1234.service;

import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.boot.registry.StandardServiceRegistryBuilder; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry;

import com.java1234.model.Student;

public class StudentTest {

public static void main(String[] args) {

Configuration configuration=new Configuration().configure(); // 实例化配置文件

ServiceRegistry serviceRegistry=new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build(); // 实例化服务登记      SessionFactory sessionFactory=configuration.buildSessionFactory(serviceRegistry); // 获取Session工厂

Session session=sessionFactory.openSession(); // 生成一个session

session.beginTransaction(); // 开启事务

Student s=new Student();

s.setName("张三");

session.save(s);

session.getTransaction().commit(); // 提交事务

session.close(); // 关闭session

sessionFactory.close(); // 关闭session工厂

} }

---结束