所使用到的jar 包：

1、创建实体类

public class User {	private Integer id;	private String name;	private String address;	public Integer getId() {		return id;	}	public void setId(Integer id) {		this.id = id;	}	public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}	public String getAddress() {		return address;	}	public void setAddress(String address) {		this.address = address;	}	}

2、配置映射文件

3、配置hiberante.cfg.xml； 详细 

        
         	
      
       org.hibernate.dialect.MySQLDialect
          	
      
       com.mysql.jdbc.Driver
          	
      
       jdbc:mysql://localhost:3306/spring?useUnicode=true&characterEncoding=UTF-8
          	
      
       root
          	
          	
      
       true
          	
      
       true
          	
      
       update
          	
          
     
    

4、测试用例：

public class Conn {	public void addUser(){		Configuration cfg=new Configuration();		cfg.configure();		ServiceRegistry sr=new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();		SessionFactory sf=cfg.buildSessionFactory(sr);				Session s=sf.openSession();		Transaction trans=s.beginTransaction();		User user=new User();		user.setName("汤姆");		user.setAddress("北海");		s.save(user);		trans.commit();		s.close();	}}

代码优化：

新建一个类名字是HibernateSessionFactory：

import org.hibernate.HibernateException;import org.hibernate.Session;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import org.hibernate.service.ServiceRegistryBuilder;public class HibernateSessionFactory {	private static final ThreadLocal
    
      threadLocal = new ThreadLocal
     
      ();    private static org.hibernate.SessionFactory sessionFactory;    private static Configuration configuration = new Configuration();    private static ServiceRegistry serviceRegistry; 	static {    	try {			configuration.configure();			serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();			sessionFactory = configuration.buildSessionFactory(serviceRegistry);		} catch (Exception e) {			System.err.println("%%%% Error Creating SessionFactory %%%%");			e.printStackTrace();		}    }    private HibernateSessionFactory() {    }	    public static Session getSession() throws HibernateException {        Session session = (Session) threadLocal.get();		if (session == null || !session.isOpen()) {			if (sessionFactory == null) {				rebuildSessionFactory();			}			session = (sessionFactory != null) ? sessionFactory.openSession()					: null;			threadLocal.set(session);		}        return session;    }	public static void rebuildSessionFactory() {		try {			configuration.configure();			serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();			sessionFactory = configuration.buildSessionFactory(serviceRegistry);		} catch (Exception e) {			System.err.println("%%%% Error Creating SessionFactory %%%%");			e.printStackTrace();		}	}    public static void closeSession() throws HibernateException {        Session session = (Session) threadLocal.get();        threadLocal.set(null);        if (session != null) {            session.close();        }    }	public static org.hibernate.SessionFactory getSessionFactory() {		return sessionFactory;	}	public static Configuration getConfiguration() {		return configuration;	}}
     
    

优化过以后代码：

public void addUser(){		Session s=HibernateSessionFactory.getSession();		Transaction trans=s.beginTransaction();		User user=new User();		user.setName("汤姆11");		user.setAddress("北海");		s.save(user);		trans.commit();		s.close();	}