完整的学习项目放在了我的github上，是一个半成品的在线音乐网站。
hibernate版本1.4 下面是userDAO 即对user表进行增删改查
package DAO; import java.util.List; import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction; import Bean.HibernateSessionFactory;
import Bean.User; public class UserDAO { public static void insertUser(User user) {
Transaction tx = null;
try {
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
session.save(user); tx.commit(); } catch (HibernateException e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
}//add public static void deleteUser(String userId) {
Transaction tx = null;
try {
User user = getUser(userId);
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
session.delete(user);
tx.commit(); } catch (Exception e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
}//delete public static void updateUser(User user) {
Transaction tx = null;
try {
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
session.update(user);
tx.commit(); } catch (Exception e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
}//update public static User getUser(String userId) {
Transaction tx = null;
User user = null;
try {
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
user = (User) session.get(User.class, userId);
tx.commit(); } catch (HibernateException e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
return user;
}//get one public static List<User> getUsers() {
Transaction tx = null;
List<User> list = null;
try {
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
Query query = session.createQuery("from User order by userId desc");
list = query.list();
tx.commit(); } catch (Exception e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
return list;
}// get all public static List<User> checkUser(String userId,String userPwd) {
Transaction tx = null;
List<User> list = null;
try {
Session session = HibernateSessionFactory.getSessionFactory()
.openSession();
tx = session.beginTransaction();
Query query = session.createQuery("from User as u where u.userId=:userId and u.userPwd=:userPwd");
query.setString("userId", userId);
query.setString("userPwd", userPwd);
list = query.list();
tx.commit();}
catch (Exception e) {
e.printStackTrace();
tx.rollback();
}
HibernateSessionFactory.closeSession();
return list;
} //测试DAO
public static void main(String[] args){
List<User> list = UserDAO.getUsers(); System.out.println("½øÈë²âÊÔº¯Êý"); for(int i=0;i<list.size();i++){
User user= new User();
user = list.get(i);
System.out.println(user.getUserId());
}
} }