hibernate入门--实现数据简单插入

hibernate实现数据的简单插入

项目目录结构：

第一步：先建一张数据表Company

/*Navicat MySQL Data TransferSource Server         : localhost_3306Source Server Version : 50051Source Host           : localhost:3306Source Database       : hibernateTarget Server Type    : MYSQLTarget Server Version : 50051File Encoding         : 65001Date: 2017-04-20 18:57:04*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `company`-- ----------------------------DROP TABLE IF EXISTS `company`;CREATE TABLE `company` (  `id` int(3) NOT NULL auto_increment,  `name` varchar(10) NOT NULL,  `url` varchar(50) NOT NULL,  `creation_date` date NOT NULL,  PRIMARY KEY  (`id`)) ENGINE=MyISAM AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;-- ------------------------------ Records of company-- ----------------------------INSERT INTO `company` VALUES ('2', '华软', 'http://home.sise.cn/', '2017-04-20');

第二步：创建Company.java持久化类

package com.hbp;import java.util.Date;//创建Company持久化类public class Company {private String url;private int id;private String name;private Date createDate;public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Date getCreateDate() {return createDate;}public void setCreateDate(Date createDate) {this.createDate = createDate;}}

第三步：创建对象-关系映射文件Company.hbm.xml

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC"-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.hbp"><class name="Company"><id name="id" column="id"><generator class="increment"></generator></id><property name="name" column="name"></property><property name="url" column="url"></property><property name="createDate" column="creation_date"></property></class></hibernate-mapping>

第四步：创建主函数InsertCompany.java，插入数据

package com.hbp;import java.util.Date;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;//持久化数据public class InsertCompany {public static void main(String[] args) {//创建一个CompanyCompany company=new Company();company.setName("华软");company.setUrl("www.sise.com");company.setCreateDate(new Date());//根据hibernate配置文件的配置信息，创建一个configuration实例Configuration configuration=new Configuration().configure();//创建SessionFactory实例SessionFactory sessionFactory=configuration.buildSessionFactory();//获取一个全新的session对象Session session=sessionFactory.openSession();//创建一个事务Transaction transaction=null;try {//用session开启事务进行数据插入transaction=session.beginTransaction();session.save(company);//提交事务transaction.commit();} catch (Exception e) {//如果数据插入失败这回滚到初始化状态if(transaction!=null){transaction.rollback();e.printStackTrace();}}finally{//记得最后关闭sessionsession.close();}}}

第五步：创建Hibernate.cfg.xml配置文件(数据源配置)

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration>    <session-factory>    <!-- mysql数据库驱动程序 -->        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>        <!-- 数据库用户密码 -->        <property name="hibernate.connection.password">root</property>        <!-- 数据库 -->        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate</property>        <!-- 数据库用户名 -->        <property name="hibernate.connection.username">root</property>        <!-- 数据库方言 -->        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>        <!-- 在控制台输出数据库查询语句 -->   <property name="hibernate.show_sql">true</property>   <!-- 输出格式化的数据库查询语句，方便阅读 -->     <property name="hibernate.format_sql">true</property>     <!-- 映射表 -->   <mapping resource="com/hbp/Company.hbm.xml"/>    </session-factory></hibernate-configuration>

注意：是<mapping resource="com/hbp/Company.hbm.xml"/>而不是<mapping resource="com.hbp/Company.hbm.xml"/>

第五步：running

代码下载：http://download.csdn.net/detail/qq_34271119/9820604