基于全注解的ssh完整例子

package com.ssh.user.dao.impl; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.hibernate.Session; import org.hibernate.Transaction; import org.springframework.stereotype.Repository; import com.ssh.user.dao.UserDao; import com.ssh.user.model.User; import com.ssh.util.MyHibernateDaoSupport; /** * 类名称：UserDaoImpl * 类描述：用户控制dao实现数据库操作接口实现 * 创建人：anan * 创建时间：2012-12-21 下午11:07:43 * 修改人：anan * 修改时间：2012-12-21 下午11:07:43 * 修改备注： * @version * */ @Repository("userDao") public class UserDaoImpl extends MyHibernateDaoSupport implements UserDao{ public void addUser(User user) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); session.save(user); try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); } public void delUser(int userId) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); User u = new User(userId); session.delete(u); try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); } public void updateUser(User user) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); session.update(user); try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); } public List<User> selectUser() { List<User> users = new ArrayList<User>(); Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); List list = session.createQuery("From User").list(); for (Iterator iterator = list.iterator(); iterator.hasNext();) { User u = (User) iterator.next(); users.add(u); } try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return users; } public User getUserByUserId(int userId) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); //load 是说明数据库中一定存在这条记录，没有则报出：ObjectNotFoundException //get 如果查不到记录，返回的是一个null User user = (User)session.load(User.class, userId); try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return user; } public boolean isExitByName(String userName) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); List user = (List)session.createQuery("From User u where u.userName=:userName").setString("userName", userName).list(); if(user.size()>0){ try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return true; } try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return false; } public boolean isExitByNameAndPass(User user) { Session session = this.getSession(true); Transaction tc = (Transaction) session.beginTransaction(); List users = (List)session.createQuery("From User u where u.userName=:userName and u.passWord=:passWord").setString("userName", user.getUserName()).setString("passWord", user.getPassWord()).list(); if(users.size()>0){ try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return true; } try { tc.commit(); } catch (Exception e) { e.printStackTrace(); } session.close(); return false; } }