hibernate问题。

Question

public void saveObject(Object object){
      
        Session session = null;
        
        try{
            SessionFactory sf = new Configuration().configure().buildSessionFactory();
            Session session = sf.openSession();
            Transaction tx = session.beginTransaction();
            session.save(object);
            tx.commit();
        }catch(Throwable th){
            th.printStackTrace();
        }finally{
            if(session!=null){
                try{
                    session.close();
                }catch(Throwable th){
                    th.printStackTrace();
                }
                session = null;
            }
        }
    }

Answer 1

使用session管理:直接调用该类的currentSession就可以了
session管理：
import net.sf.hibernate.*; 
import net.sf.hibernate.cfg.*; public class HibernateUtil {     private static Log log = LogFactory.getLog(HibernateUtil.class);     private static final SessionFactory sessionFactory;     static { 
        try { 
            // Create the SessionFactory 
            sessionFactory = new Configuration().configure().buildSessionFactory(); 
        } catch (Throwable ex) { 
            log.error("Initial SessionFactory creation failed.", ex); 
            throw new ExceptionInInitializerError(ex); 
        } 
    }     public static final ThreadLocal session = new ThreadLocal();     public static Session currentSession() throws HibernateException { 
        Session s = (Session) session.get(); 
        // Open a new Session, if this Thread has none yet 
        if (s == null) { 
            s = sessionFactory.openSession(); 
            session.set(s); 
        } 
        return s; 
    }     public static void closeSession() throws HibernateException { 
        Session s = (Session) session.get(); 
        session.set(null); 
        if (s != null) 
            s.close(); 
    } 
}