getHibernateTemplate调用存储过程

public void getProc1(String ob) {
Session session = getHibernateTemplate().getSessionFactory().getCurrentSession();
session = this.getHibernateTemplate().getSessionFactory().openSession();  
   CallableStatement cs = null;
      try {
cs=session.connection().prepareCall("{Call test_xg_p3(?,?)}");  
  cs.setInt(1, 78);  
  cs.registerOutParameter(2, Types.VARCHAR);  
 
  cs.execute();
  System.out.println(cs.getString(2));  
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} 
}