简单的实现Web登录(struts2+Hibernate)

package com.dream.test; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistryBuilder; import com.dream.dao.UserDao; import com.dream.data.UserData; import org.hibernate.service.ServiceRegistry; public class Test { public static void main(String[] args) { if(new UserDao().login("dream", "123456")) { System.out.println("llalal"); } else { System.out.println("lla+++lal"); } Configuration cfg=null; SessionFactory sf=null; Session session=null; Transaction tx=null; try { cfg=new Configuration().configure(); ServiceRegistry registry=new ServiceRegistryBuilder() .applySettings(cfg.getProperties()) .buildServiceRegistry(); sf=cfg.buildSessionFactory(registry); session=sf.openSession(); tx=session.beginTransaction(); Query query = session.createQuery("from UserData u where u.id=?"); query.setParameter(0, 1); UserData u = (UserData) query.list().get(0); //UserData u=(UserData)session.get(UserData.class, 1); System.out.println("name："+u.getUsername()+"date: "+u.getDate()); tx.commit(); }catch(Exception e){ e.printStackTrace(); tx.rollback();//执行回滚 }finally { if(session!=null&&session.isOpen()) session.close(); } } }