package com.lib.logic;import com.lib.dao.HbmDAO;import com.lib.vo.User;import java.util.List;import com.lib.vo.Reader;import com.lib.dao.DAOException;public class LoginLogic {  private HbmDAO dao;   public LoginLogic() {       dao = new HbmDAO();       dao.setAutoClose(false);   }   public User passOrNot(String username,String password)   {       String str = "select u from User as u where u.userName=? and u.passWord=?";       String para[] = {username,password};       List users = dao.list(str,para);       if(users.size()>0)       {           User user = new User();           user = (User)users.get(0);           return user;       }       return null;   }   public Reader getReader(Long uid)   {       Reader reader = null;       try {         reader = (Reader)dao.retrieve(Reader.class, uid);       }       catch (DAOException ex) {         ex.printStackTrace();       }        return reader;   }   public void closeDAO()   {     dao.closeSession();   }}