本文共 5592 字，大约阅读时间需要 18 分钟。

目录结构如下图所示：

1.hibernate.cfg.xml

   	
    		
     		
     
      org.hibernate.dialect.MySQLDialect
     		
     		
     
      com.mysql.jdbc.Driver
     		
     		
     
      jdbc:mysql://localhost:3306/01hibernate
     		
     
      root
     		
     
      root
     		
     		
     
      true
     		
     		
     
      update
     		
     		
     	
    
   

2.User.java

package cn.sigangjun.hibernate.model;import java.util.Date;/** * @author sigangjun * */public class User {	private int id;	private String username;	private String password;	private String nickname;	private Date born;	public int getId() {		return id;	}	public void setId(int id) {		this.id = id;	}	public String getUsername() {		return username;	}	public void setUsername(String username) {		this.username = username;	}	public String getPassword() {		return password;	}	public void setPassword(String password) {		this.password = password;	}	public String getNickname() {		return nickname;	}	public void setNickname(String nickname) {		this.nickname = nickname;	}	public Date getBorn() {		return born;	}	public void setBorn(Date born) {		this.born = born;	}	@Override	public String toString() {		return "User [id=" + id + ", username=" + username + ", password=" + password + ", nickname=" + nickname + ", born=" + born + "]";	}}

3.User.hbm.xml

4.HibernateUtil.java

package cn.sigangjun.hibernate.util;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import org.hibernate.service.ServiceRegistryBuilder;public class HibernateUtil {	private final static SessionFactory FACTORY = buildSessionFactory();	private static SessionFactory buildSessionFactory() {		Configuration cfg = new Configuration().configure();		ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();		SessionFactory factory = cfg.buildSessionFactory(serviceRegistry);		return factory;	}		public static SessionFactory getSessionFactory() {		return FACTORY;	}		public static Session openSession() {		return FACTORY.openSession();	}		public static void close(Session session) {		if(session!=null) session.close();	}}

5.pom.xml

   	
    
     4.0.0
    	
    
     cn.sigangjun
    	
    
     02hibernate
    	
    
     war
    	
    
     0.0.1-SNAPSHOT
    	
    
     02hibernate Maven Webapp
    	
    
     http://maven.apache.org
    	
    		
     			
      
       mysql
      			
      
       mysql-connector-java
      			
      
       5.1.25
      		
     		
     			
      
       org.hibernate
      			
      
       hibernate-core
      			
      
       4.2.6.Final
      		
     		
     			
      
       junit
      			
      
       junit
      			
      
       4.10
      			
      
       test
      		
     	
    	
    		
     
      02hibernate
     	
    
   

6.测试代码：TestCRUD.java

package cn.sigangjun.hibernate.test;import java.text.SimpleDateFormat;import java.util.List;import org.hibernate.Session;import org.junit.Test;import cn.sigangjun.hibernate.model.User;import cn.sigangjun.hibernate.util.HibernateUtil;@SuppressWarnings("unchecked")public class TestCRUD {	private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");	@Test	public void testAdd() {		Session session = null;		try {			session = HibernateUtil.openSession();			session.beginTransaction();			User u = new User();			u.setBorn(sdf.parse("1977-11-22"));			u.setNickname("司刚军");			u.setPassword("123");			u.setUsername("sigangjun");			session.save(u);			session.getTransaction().commit();		} catch (Exception e) {			e.printStackTrace();			if (session != null)				session.getTransaction().rollback();		} finally {			HibernateUtil.close(session);		}	}	@Test	public void testLoad() {		Session session = null;		try {			session = HibernateUtil.openSession();			User u = (User) session.load(User.class, 2);			System.out.println(u);		} catch (Exception e) {			e.printStackTrace();		} finally {			HibernateUtil.close(session);		}	}	@Test	public void testUpdate() {		Session session = null;		try {			session = HibernateUtil.openSession();			session.beginTransaction();			User u = (User) session.load(User.class, 2);			u.setNickname("张小四");			session.update(u);			session.getTransaction().commit();		} catch (Exception e) {			e.printStackTrace();			if (session != null)				session.getTransaction().rollback();		} finally {			HibernateUtil.close(session);		}	}	@Test	public void testDelete() {		Session session = null;		try {			session = HibernateUtil.openSession();			session.beginTransaction();			User u = new User();			u.setId(2);			session.delete(u);			session.getTransaction().commit();		} catch (Exception e) {			e.printStackTrace();			if (session != null)				session.getTransaction().rollback();		} finally {			HibernateUtil.close(session);		}	}	@Test	public void testList() {		Session session = null;		try {			session = HibernateUtil.openSession();			List
   
     users = session.createQuery("from User").list();			for (User u : users) {				System.out.println(u);			}		} catch (Exception e) {			e.printStackTrace();		} finally {			HibernateUtil.close(session);		}	}	@Test	public void testPager() {		Session session = null;		try {			session = HibernateUtil.openSession();			List
    
      users = session.createQuery("from User").setFirstResult(0).setMaxResults(2).list();			for (User u : users) {				System.out.println(u);			}		} catch (Exception e) {			e.printStackTrace();		} finally {			HibernateUtil.close(session);		}	}}