Hibernate基本开发步骤

1.新建一个Web Project ，导入相应jar文件

 

2.编写Util类

 1）CreateTable.java

 

package com.mingmei.util;import org.hibernate.cfg.Configuration;import org.hibernate.tool.hbm2ddl.SchemaExport;public class CreateTable {public static void main(String[] args) {Configuration configuration = new Configuration().configure();SchemaExport schemaExport = new SchemaExport(configuration);schemaExport.create(true, true);}}

2)HibernateSessionFactory.java

package com.mingmei.util;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class HibernateSessionFactory {// 1. 读取hibernate.cfg.xml文件static Configuration configuration = new Configuration().configure();public static Session getSession() {// 2. 创建SessionFactory对象SessionFactory sessionFactory = configuration.buildSessionFactory();// 3.获取Session对象return sessionFactory.openSession();}public static void closeSession(Session session) {if (session.isOpen()) {session.close();}}}

4.编写实体类

package com.tarena.pojo;import java.io.Serializable;public class User implements Serializable {private int id;private String name;private String pwd;private int age;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 String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}}

 

5. 配置User.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.tarena.pojo"><class name="User" table="d_user"><id name="id" type="integer"><generator class="native"></generator></id><property name="name" ></property><property name="pwd"></property><property name="age"></property></class></hibernate-mapping>

 
6. 配置核心配置文件hibernate.cfg.xml
<!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">root</property><property name="connection.password">root</property><property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property><property name="connection.driver_class">com.mysql.jdbc.Driver</property><property name="dialect">org.hibernate.dialect.MySQLDialect</property><property name="show_sql">true</property><property name="format_sql">true</property><property name="myeclipse.connection.profile">hibernate</property><mapping resource="com/tarena/pojo/User.hbm.xml" /></session-factory></hibernate-configuration>
7.编写测试类TestHibernate.java
package com.tarena.test;import org.hibernate.Session;import org.hibernate.Transaction;import org.junit.Test;import com.tarena.pojo.User;import com.tarena.util.HibernateSessionFactory;public class TestHibernate {@Testpublic void testSave() {Session session = HibernateSessionFactory.getSession();Transaction transaction = session.beginTransaction();transaction.begin();try {User user = new User();user.setAge(23);user.setName("maxiaoming");user.setPwd("1234");session.save(user);transaction.commit();} catch (Exception e) {e.printStackTrace();transaction.rollback();} finally {HibernateSessionFactory.closeSession(session);}}@Testpublic void testLoad() {Session session = null;try {session = HibernateSessionFactory.getSession();User user = (User) session.load(User.class, 2); // ObjectNotFoundExceptionSystem.out.println(user.getId() + "," + user.getName() + ","+ user.getPwd() + "," + user.getAge());} catch (Exception e) {e.printStackTrace();} finally {HibernateSessionFactory.closeSession(session);}}@Testpublic void testGet() {Session session = null;try {session = HibernateSessionFactory.getSession();User user = (User) session.get(User.class, 1);System.out.println(user);// System.out.println(user.getId() + "," + user.getName() + ","// + user.getPwd() + "," + user.getAge());} catch (Exception e) {e.printStackTrace();} finally {HibernateSessionFactory.closeSession(session);}}@Testpublic void testUpdate() {// 执行修改之前须调用load/get方法Session session = null;try {session = HibernateSessionFactory.getSession();session.beginTransaction().begin();User user = (User) session.load(User.class, 1);user.setName("maxianhai");user.setPwd("test");session.update(user);session.beginTransaction().commit();} catch (Exception e) {e.printStackTrace();session.beginTransaction().rollback();} finally {HibernateSessionFactory.closeSession(session);}}@Testpublic void testDelete() {Session session = null;try {session = HibernateSessionFactory.getSession();session.beginTransaction().begin();User user = new User();user.setId(2);session.delete(user);session.beginTransaction().commit();} catch (Exception e) {e.printStackTrace();session.beginTransaction().rollback();} finally {HibernateSessionFactory.closeSession(session);}}}

 
 
 

 
	
				
	
					   
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