myeclipse下hibernate入门实例介绍

技术2022-05-11 39

myeclipse下hibernate初步实例

说明：本例采用myeclipse+sqlserver2000 hibernate版本为3.0. 数据库驱动为：jtds-1.0.2。

1。配置myeclipse环境（eclipse-SDK-3.1.1+myeclipse4.1.1GA_E3.1）。2.配置好sqlserver2000数据库：建立数据库：goto . 表 test_products

CREATE TABLE [dbo].[test_products] ( [id] [int] IDENTITY (1, 1) NOT NULL , [aotoid] [char] (50) COLLATE Chinese_PRC_CI_AS NULL , [username] [char] (50) COLLATE Chinese_PRC_CI_AS NULL , [price] [int] NULL , [amount] [int] NULL ) id为自动编号。

3。新建项目--myeclipse--Web Project 。本例为：prodcast4. 右单击prodcast，加入myeclipse的hibernate.并在此工程中建立数据连结。建立完成后，在src下自动生成hibernate.cfg.xml，内容为：<?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> <property name="connection.username">sa</property> <property name="connection.url">jdbc:jtds:sqlserver://192.168.1.88:1433;DatabaseName=goto</property> <property name="dialect">org.hibernate.dialect.SQLServerDialect</property> <property name="connection.password">hcsys</property> <property name="connection.driver_class">net.sourceforge.jtds.jdbc.Driver</property>

</session-factory>

</hibernate-configuration>5。建立：Product.java:package test.hibernate;

import java.io.Serializable;

public class Product implements Serializable {

private static final long serialVersionUID = 3858043967100350732L; private Integer id; private String aotoid; private String username; private Integer price; private Integer amount;

public Integer getAmount() { return amount; } public void setAmount(Integer amount) { this.amount = amount; } public String getAotoid() { return aotoid; } public void setAotoid(String aotoid) { this.aotoid = aotoid; } public Integer getPrice() { return price; } public void setPrice(Integer price) { this.price = price; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } }6.建立InsertProduct.javapackage test.hibernate;

import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.*;import org.hibernate.classic.Session;

public class InsertProduct {

public static void main(String[] args) { SessionFactory sf = new Configuration().configure() .buildSessionFactory(); Session session = sf.openSession(); Transaction tx = session.beginTransaction(); Product p = new Product(); p.setAotoid("1"); p.setUsername("zhang"); p.setAmount(new Integer(10)); p.setPrice(new Integer(10)); System.out.println(p+"_______________1"); try{ session.save(p); tx.commit(); session.close(); System.out.println(p+"_______________2"); }catch(Exception ex){ ex.printStackTrace(); } }}7.在test.hibernate包下建立:Product.hbm.xml.<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" > <hibernate-mapping package="test.hibernate"> <class table="test_products" name="Product">  <id name="id" type="int" column="id" unsaved-value="0"> <generator class="identity"/> </id>

</hibernate-mapping>

8.打开hibernate.cfg.xml.加入： <mapping resource="hibernate.cfg.xml" /> <mapping resource="test/hibernate/Product.hbm.xml" />形成完整的config:<?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>

</hibernate-configuration>9.运行InsertProduct.java就可以看到数据库goto表test_products中增加了一条记录。

使用myeclipse开发hibernate

1、myeclipse安装启动eclipse3.0（我手头myeclipse好像不支持eclipse3.1） Help->Software Updates->Manage Configuration... 在Eclipse Platform中选择Add an Extension Location,选择MyEclipse的目录，确定完成。 MyEclipse->Update SubScription,输入破解码。至此，myeclipse安装完成。 2、配置数据库驱动 Window->Preferences 点开MyEclipse->Database Explorer->Drivers 选择你所要配置的驱动->Edit,在Extra Class Path中new驱动的jar包，点击List Drivers，进行相关配置。 3、配置数据源选择MyEclipse Database Explorer视图，new。选择刚才配置完成的数据库驱动。 4、创建支持Hibernate的Project new一个Project，点击右键MyEclipse->Add Hibernate Capabilities,按提示进行相关配置，选择刚才配置完成的数据源。至此，相关的hibernate框架就已经基本搭建完成。 5、数据库表映射到相应的类数据源中选择相应的表，点击右键，Create Hibernate Mapping。 6、编写测试程序 ======================================================== package com.shikai.hibernate; import java.sql.SQLException; import net.sf.hibernate.HibernateException; import net.sf.hibernate.Session; public class Test { public static void main(String[] args) throws HibernateException, SQLException{ Session session = HibernateSessionFactory.currentSession(); session.connection().setAutoCommit(true); TblUser user = new TblUser(); user.setId(new Long("1002")); user.setName("dongrui"); session.save(user); session.flush(); HibernateSessionFactory.closeSession(); } } ============================================================ 注意：一定要session.connection().setAutoCommit(true);否则程序正常运行完成之后，数据不能成功入库

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