第四章 Hibernate入门

1.构建了一个Student实体类

public class Student {

private Integer id;

//name

private String name;

//age

private Integer age;

}

2.构建一个大配置

在src根目录下书写

Hibernate.cfg.xml

<?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>

<property name="connection.driver_class">oracle.jdbc.OracleDriver</property>

<property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>

<property name="hibernate.dialect"> org.hibernate.dialect.Oracle10gDialect</property>

</session-factory>

</hibernate-configuration>

3.构建小配置，和实体类对应的

Student.hbm.xml

<?xml version='1.0' encoding='utf-8'?>

<!DOCTYPE hibernate-mapping PUBLIC

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

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

<hibernate-mapping package="cn.happy.entity">

</id>

</class>

</hibernate-mapping>

4.测试代码

对session进行探究。

Session.save(stu);

package cn.happy.test;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.hibernate.classic.Session;

import org.junit.Test;

import cn.happy.entity.Student;

public class H_01Test {

@Test

public void testAdd(){

//1.1构建一个学生对象

Student stu=new Student();

stu.setAge(18);

stu.setName("2016年8月28日09:21:09训练营");

stu.setId(3);

//1.2 找到和数据库的接口 xxx========session--->sessionFactory--->configure.buildSessionFactory()

//咱们要想打通和db通道

Configuration cf=new Configuration().configure("hibernate.cfg.xml");

SessionFactory factory = cf.buildSessionFactory();

Session session = factory.openSession();

Transaction tx = session.beginTransaction();

//1.3保存

session.save(stu);

tx.commit();

session.close();

}

巴特西

第四章 Hibernate入门

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