1 package cn.happy.util; 2  3 import org.hibernate.Session; 4 import org.hibernate.SessionFactory; 5 import org.hibernate.cfg.Configuration; 6  7 /** 8  * 1.1用于生产session对象的工具类 9  */10 public class HibernateUtil {11     private static Configuration cfg=new Configuration().configure();12     private static SessionFactory factory=cfg.buildSessionFactory();13     //方法返回session14     public static Session getsession(){15         return factory.openSession();16     }17     //关闭session18     public static void closeSession(){19         getsession().close();20     }21 22 }

 1 package cn.happy.entity; 2 /** 3  * 实体类 4  * @author Administrator 5  * 6  */ 7 public class Student { 8     private Integer id; 9     private String name;10     private Integer age;11     12     @Override13     public String toString() {14         return "Student [id=" + id + ", name=" + name + ", age=" + age + "]";15     }16     public Integer getId() {17         return id;18     }19     public void setId(Integer id) {20         this.id = id;21     }22     public String getName() {23         return name;24     }25     public void setName(String name) {26         this.name = name;27     }28     public Integer getAge() {29         return age;30     }31     public void setAge(Integer age) {32         this.age = age;33     }34 35 }

 1 package cn.happy.test; 2  3 import org.hibernate.SessionFactory; 4 import org.hibernate.Transaction; 5 import org.hibernate.cfg.Configuration; 6 import org.hibernate.classic.Session; 7 import org.junit.Test; 8  9 import cn.happy.entity.Student;10 /**11  * 增加12  * @author Administrator13  *14  */15 public class addTest {16 @Test17     public void addtest(){18         Student stu=new Student();19         stu.setId(1);20         stu.setName("张三");21         stu.setAge(18);22         Configuration cf=new Configuration().configure("hibernate.cfg.xml");23         SessionFactory factory = cf.buildSessionFactory();24         Session session = factory.openSession();25         Transaction tx = session.beginTransaction();26         //保存27         session.save(stu);28         tx.commit();29         session.close();30     }31 32     33 }

 1 package cn.happy.test; 2  3 import org.hibernate.Session; 4 import org.hibernate.Transaction; 5 import org.junit.Test; 6  7 import cn.happy.entity.Student; 8 import cn.happy.util.HibernateUtil; 9 /**10  * 删除11  * @author Administrator12  *13  */14 public class delTest {15     @Test16     public void deltest(){17          Session session = HibernateUtil.getsession();18          Student stu=new Student();19          stu.setId(1);20          Transaction tx = session.beginTransaction();21          session.delete(stu);22          tx.commit();23          HibernateUtil.closeSession();24          System.out.println("del ok!");25     }26 27 }

 1 package cn.happy.test; 2  3 import org.hibernate.Session; 4 import org.hibernate.Transaction; 5 import org.junit.Test; 6  7 import cn.happy.entity.Student; 8 import cn.happy.util.HibernateUtil; 9 /**10  * 查询11  * @author Administrator12  *13  */14 public class getTest {15     @Test16     public void gettest()17     {18         Session session = HibernateUtil.getsession();19         Student stu=(Student)session.get(Student.class, 1);20         Transaction tx=session.beginTransaction();21         System.out.println(stu);22     }23 24 }

package cn.happy.test;import org.hibernate.Session;import org.hibernate.Transaction;import org.junit.Test;import cn.happy.entity.Student;import cn.happy.util.HibernateUtil;/** * 修改 * @author Administrator * */public class updateTest {    @Test    public void updatetest(){        Session session = HibernateUtil.getsession();        Student stu=(Student)session.load(Student.class,1);        stu.setName("李短");        Transaction tx=session.beginTransaction();        session.update(stu);        tx.commit();        HibernateUtil.closeSession();        System.out.println("ok");                    }}