userdao.java

用java实现的一个论坛,可以供大家参考

/*******************************************************************\
*                                                                   *
*			   LightningBoard			    *
*                                                                   *
*          http://sourceforge.net/projects/lightningboard/          *
*			                                            *
*	            Copyright (c) 2002 Xiaobo Liu	            *
*                                                                   *
*********************************************************************
*                        LICENSE INFORMATION                        *
*                                                                   *
*  LightningBoard is free software; you can redistribute it and/or  *
*  modify it under the terms of the GNU General Public License as   *
*  published by the Free Software Foundation; either version 2 of   *
*  the License, or any later version.                               *
*                                                                   *
*  We don't charge anything for the use of LightningBoard, we only  *
*  require you to keep the copyright present on your site and in    *
*  the source files.                                                *
*                                                                   *
*  LightningBoard is distributed in the hope that it will be useful,*
*  but without any warranty; without even the implied warranty of   *
*  merchantability or fitness for a particular purpose. See the GNU *
*  General Public License for more details.                         *
*                                                                   *
\*******************************************************************/

package liuxiaobo.lb.dao;

import java.sql.*;
import java.util.*;
import liuxiaobo.db.*;
import liuxiaobo.lb.*;
import liuxiaobo.lb.bean.*;

public class UserDAO  {
  private DBConnectionManager dbcm = DBConnectionManager.getInstance();

  public UserBean execute(int u_id)throws ActionException{
    Connection connection=null;
    try {
      UserBean userBean=new UserBean();
      connection=dbcm.getConnection();
      DBAccess dba=new DBAccess(connection);
      String sql="SELECT u_name,u_email,u_regtime,u_address,u_sign,u_post,u_lasttime,u_lastip FROM user  WHERE u_id=" + u_id;
      ResultSet rs=dba.openSelect(sql);
//check result
      if (!rs.next())
        return null;
      rs.beforeFirst();
      while (rs.next()){
        userBean.setU_id(String.valueOf(u_id));
        userBean.setU_name(rs.getString("u_name"));
        userBean.setU_email(rs.getString("u_email"));
        userBean.setU_regtime(rs.getString("u_regtime"));
        userBean.setU_address(rs.getString("u_address"));
        userBean.setU_sign(rs.getString("u_sign"));
        userBean.setU_post(rs.getString("u_post"));
        userBean.setU_lasttime(rs.getString("u_lasttime"));
        userBean.setU_lastip(rs.getString("u_lastip"));
      }
      rs.close();
      dba.closeSelect();
      return userBean;
    } catch (Exception ex) {
      throw new ActionException(ex);
    }finally{
      try {
        dbcm.freeConnection(connection);
      } catch (SQLException ex) {
        //
      }
    }
  }
}