Eclipse中配置Hibernate

path路径下导入Hibernate/lib/required目录下所有的jar包。以及连接数据库的Jar包

层次结构

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="show_sql">true</property>
		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		<property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
		<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate</property>
		<property name="hibernate.connection.username">root</property>
		<property name="hibernate.connection.password">mysqladmin</property>
		<mapping resource="org/zbq/bean/User.hbm.xml"/>
	</session-factory>
</hibernate-configuration>

User.java

package org.zbq.util;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.zbq.bean.User;

public class HibernateUtil {
	private static SessionFactory sessionFactory;
	
	static{
		try{
			Configuration conf = new Configuration();
			conf.configure();
			ServiceRegistry sr = new ServiceRegistryBuilder()
									.applySettings(conf.getProperties())
									.buildServiceRegistry();
			
			sessionFactory = conf.buildSessionFactory(sr);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	
	public static void save(User user) throws Exception{
		Transaction tr = null;
		Session session = sessionFactory.openSession();
		
		try{
			tr = session.beginTransaction();
//			tr.begin();
			session.save(user);
			tr.commit();
		} catch (Exception e) {
			if(null != tr){
				tr.rollback();
			}
			throw e;
		} finally {
			session.close();
		}
	}
	
	@SuppressWarnings("unchecked")
	public static List<User> listUsers() throws Exception{
		List<User> list = null;
		Transaction tr = null;
		Session session = sessionFactory.openSession();
		
		try{
			tr = session.beginTransaction();
//			tr.begin();
			String sql = "from User";
			Query query = session.createQuery(sql);
			
			list = (List<User>)query.list();
			tr.commit();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			session.close();
		}
		
		return list;
	}
}

User.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC  
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"  
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 

<hibernate-mapping>
	<class name="org.zbq.bean.User" table="user">
		<id name="id" column="id" type="int">
			<generator class="increment"/>
		</id>
		
		<property name="name" column="name" type="string"/>
		<property name="pass" column="pass" type="string"/>		
	</class>
</hibernate-mapping>

HibernateUtil.java

package org.zbq.util;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.zbq.bean.User;

public class HibernateUtil {
	private static SessionFactory sessionFactory;
	
	static{
		try{
			Configuration conf = new Configuration();
			conf.configure();
			ServiceRegistry sr = new ServiceRegistryBuilder()
									.applySettings(conf.getProperties())
									.buildServiceRegistry();
			
			sessionFactory = conf.buildSessionFactory(sr);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	
	public static void save(User user) throws Exception{
		Transaction tr = null;
		Session session = sessionFactory.openSession();
		
		try{
			tr = session.beginTransaction();
//			tr.begin();
			session.save(user);
			tr.commit();
		} catch (Exception e) {
			if(null != tr){
				tr.rollback();
			}
			throw e;
		} finally {
			session.close();
		}
	}
	
	@SuppressWarnings("unchecked")
	public static List<User> listUsers() throws Exception{
		List<User> list = null;
		Transaction tr = null;
		Session session = sessionFactory.openSession();
		
		try{
			tr = session.beginTransaction();
//			tr.begin();
			String sql = "from User";
			Query query = session.createQuery(sql);
			
			list = (List<User>)query.list();
			tr.commit();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			session.close();
		}
		
		return list;
	}
}

测试类

package org.zbq.test;

import java.util.List;

import org.zbq.bean.User;
import org.zbq.util.HibernateUtil;

public class HibernatUtilTest {

	public static void main(String[] args) throws Exception {
		User user = new User();
		user.setId(2);
		user.setName("cat");
		user.setPass("intel123");
		HibernateUtil.save(user);
		
		List<User> list = HibernateUtil.listUsers();
		for(User u : list){
			System.out.println(u.getName() + ":" + u.getPass());
		}
	}

}