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hibernate增删改查的标准范例
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发布于：2013-01-10 15:33
 | |  |  | 一个套用hibernate框架编写的增删改查小范例，此处分享一下，经过多次修改，从代码规范和后期维护，以及简洁程度上说：算是很标准的书写格式；
[java]
package www.csdn.net.bookhome.daoimpl;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.Transaction;
import www.csdn.net.bookhome.dao.AdminDao;
import www.csdn.net.bookhome.dao.BaseHibernateDao;
import www.csdn.net.bookhome.domain.Admin;
import www.csdn.net.bookhome.utils.HibernateSessionFactory;
public class AdminDaoImpl extends BaseHibernateDao implements AdminDao {
public void deleteObject(Admin entity) {
Transaction tx = null;
try {
Session session = getSession();
tx = session.beginTransaction();
session.delete(entity);
tx.commit();
} catch (Exception e) {
tx.rollback();
throw new RuntimeException("删除所有错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public void deleteObjectById(Integer id) {
Transaction tx = null;
try {
Session session = getSession();
tx = session.beginTransaction();
session.save(id);
tx.commit();
} catch (Exception e) {
tx.rollback();
throw new RuntimeException("根据id错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public List getAllObjects(Class entityClass) {
try {
return getSession().createQuery("from Admin").list();
} catch (Exception e) {
throw new RuntimeException("查找错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public Admin getObjectById(Class className, Integer id) {
try {
return (Admin) getSession().get(className, id);
} catch (Exception e) {
throw new RuntimeException("根据id查找错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public List getObjects(Class clazz, int from, int size, String orderName) {
try {
return getSession().createQuery("from Admin").setFirstResult((from-1)*size).setMaxResults(size).list();
} catch (Exception e) {
throw new RuntimeException("分页查询错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public Admin loadObjectById(Class className, Integer id) {
try {
return (Admin) getSession().load(className, id);
} catch (Exception e) {
throw new RuntimeException("load查询错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public void saveObject(Admin entity) {
Transaction tx = null;
try {
Session session = getSession();
tx = session.beginTransaction();
session.save(entity);
tx.commit();
} catch (Exception e) {
tx.rollback();
throw new RuntimeException("保存错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public void updateObject(Admin entity) {
Transaction tx = null;
try {
Session session = getSession();
tx = session.beginTransaction();
session.update(entity);
tx.commit();
} catch (Exception e) {
tx.rollback();
throw new RuntimeException("更新错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public Admin getAllObjects(String name) {
try {
return (Admin) getSession().createQuery("from Admin a where a.adminName = :name")
.setParameter("name", name).uniqueResult();
} catch (Exception e) {
throw new RuntimeException("根据用户查询有错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
public Admin login(Admin entity) {
try {
return (Admin) getSession().createQuery("from Admin a where a.adminName = :name and a.adminPassword = :pass ").setString("name",entity.getAdminName()).setString("pass", entity.getAdminPassword()).uniqueResult();
} catch (Exception e) {
throw new RuntimeException("登录错误"+e);
} finally {
HibernateSessionFactory.closeSession();
}
}
}
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