loginaction.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.action;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import liuxiaobo.util.*;
import liuxiaobo.lb.*;
import liuxiaobo.lb.dao.*;
import liuxiaobo.lb.bean.*;


public class LoginAction  {
  public String excute(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException,ActionException{
      String u_name=request.getParameter("u_name");
      u_name=StringUtil.escapeSQLTags(u_name);
      u_name=StringUtil.escapeHTMLTags(u_name);
      String u_password=request.getParameter("u_password");
      u_password=StringUtil.escapeSQLTags(u_password);
      u_password=StringUtil.escapeHTMLTags(u_password);
     if (StringUtil.nullOrBlank(u_name)||StringUtil.nullOrBlank(u_password)){
        request.setAttribute("actionMessage",new ActionMessage("blank_error"));
        return "/actionMessage.jsp";
      }
      LoginDAO loginDAO=new LoginDAO();
      LoginBean loginBean=loginDAO.execute(u_name);
      if (loginBean!=null&&u_password.equals(loginBean.getU_password())){
        HttpSession sess = request.getSession();
        sess.setAttribute("loginBean",loginBean);
        String u_id=loginBean.getU_id();
        response.sendRedirect("user.do?u_id="+u_id);
        return null;
      }else{
        request.setAttribute("actionMessage",new ActionMessage("login_error"));
        return "/actionMessage.jsp";
      }
  }
}