Hibernate_HelloWorld

一、Hello World Hibernate搭建环境 1、建立一个Project，导入数据库驱动程序,Hibernate所需的jar包 2、创建model层,创建Student类，分别设定id，name，age属性及setter()和getter()方法 3、编写hibernate.cfg.xml ?xml version=1.0 encoding=utf-8?!DOCTYPE

一、Hello World

Hibernate搭建环境

1、建立一个Project，导入数据库驱动程序,Hibernate所需的jar包

2、创建model层,创建Student类，分别设定id，name，age属性及setter()和getter()方法

3、编写hibernate.cfg.xml

<?xml version=&#39;1.0&#39; encoding=&#39;utf-8&#39;?>

<!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>

<!-- Database connection settings -->

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

<property name="connection.url">jdbc:mysql://localhos【本文来自鸿网互联 (http://www.68idc.cn)】t:3306/hibernate</property>

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

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

<!-- JDBC connection pool (use the built-in) -->

<!-- <property name="connection.pool_size">1</property> -->

<!-- SQL dialect -->

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

<!-- Enable Hibernate&#39;s automatic session context management -->

<!-- <property name="current_session_context_class">thread</property> -->

<!-- Disable the second-level cache -->

<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

<!-- Echo all executed SQL to stdout -->

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

<!-- Drop and re-create the database schema on startup -->

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

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

</session-factory>

</hibernate-configuration>

4、编写Student.hbm.xml

<?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 >

<class name="com.zgy.hibernate.model.Student" table="student">

<id name="id" column="id"></id>

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

<property name="age" column="age"></property>

</class>

</hibernate-mapping>

5、连接本地数据库，创建数据库hibernate和表student

create database hibernate;

use hibernate;

create table student(id int primary key, name varchar(20), age int);

6、创建测试类StudentTest.java

package com.zgy.hibernate.model;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;



public class StudentTest {

public static void main(String[] args){

Student s = new Student();

s.setId(1);

s.setName("s1");

s.setAge(1);



Configuration cfg = new Configuration();

SessionFactory sf = cfg.configure().buildSessionFactory();

Session session = sf.openSession();

session.beginTransaction();

session.save(s);

session.getTransaction().commit();

session.close();

sf.close();

}

}

7、运行，测试成功