hibernate工具类封装增删改操作，简化编程

public class HibernateUtil {
private static Configuration cfg;
private static SessionFactory sessionFactory;

private HibernateUtil(){}

static{
cfg = new Configuration();
cfg.configure();
sessionFactory = cfg.buildSessionFactory(new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry());
}

public static SessionFactory getSessionFactory() {
return sessionFactory;
}

public static synchronized Session getSession(){
return sessionFactory.openSession();
}

/*
* 公用增删改操作
*/

public static boolean save(Object obj){
Session session = null;
Transaction trans = null;
try{
session = HibernateUtil.getSession();
trans = session.beginTransaction();
session.save(obj);
trans.commit();
return true;
}catch(HibernateException e){
if(null != trans)
trans.rollback();
e.printStackTrace();
}finally{
if(null != session)
session.close();
}
return false;
}

public static boolean delete(Object obj){
Session session = null;
Transaction trans = null;
try{
session = HibernateUtil.getSession();
trans = session.beginTransaction();
session.delete(obj);
trans.commit();
return true;
}catch(HibernateException e){
if(null != trans)
trans.rollback();
e.printStackTrace();
}finally{
if(null != session)
session.close();
}
return false;
}

public static boolean update(Object obj){
Session session = null;
Transaction trans = null;
try{
session = HibernateUtil.getSession();
trans = session.beginTransaction();
session.update(obj);
trans.commit();
return true;
}catch(HibernateException e){
if(null != trans)
trans.rollback();
e.printStackTrace();
}finally{
if(null != session)
session.close();
}
return false;
}
@SuppressWarnings("rawtypes")
public static Object get(Class clazz,Serializable id){
Session session = null;
Object obj = null;
try{
session = HibernateUtil.getSession();
obj = session.get(clazz,id);
}catch(HibernateException e){
e.printStackTrace();
}finally{
if(null != session)
session.close();
}
return obj;
}

}

摘自 mzlqh的专栏