postaction.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 PostAction  {
  public String excute(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException ,ActionException{
      HttpSession sess = request.getSession(false);
      LoginBean loginBean=(LoginBean)sess.getAttribute("loginBean");
      int u_id=StringUtil.parseInt(loginBean.getU_id());

      int f_id =StringUtil.parseInt(request.getParameter("f_id"));
      int t_id =StringUtil.parseInt(request.getParameter("t_id"));
      String subject=request.getParameter("subject");
      subject=StringUtil.escapeSQLTags(subject);
      subject=StringUtil.escapeHTMLTags(subject);
      String content=request.getParameter("content");
      content=StringUtil.escapeSQLTags(content);
      content=StringUtil.escapeHTMLTags(content);
      content=StringUtil.encodeCR(content);
       String u_lastip=request.getRemoteAddr();
      boolean postFlag=true;
      if (t_id!=0)
        postFlag=false;
      if (StringUtil.nullOrBlank(content)||(postFlag&&StringUtil.nullOrBlank(subject))){
        request.setAttribute("actionMessage",new ActionMessage("blank_error"));
        return "/actionMessage.jsp";
      }
      PostDAO postDAO=new PostDAO();
      String urlString="topic.do?t_id=";
      if (postFlag){
        urlString=urlString+postDAO.post(f_id,u_id,subject,content,u_lastip);
      }else{
        urlString=urlString+t_id;
        postDAO.reply(t_id,u_id,content,u_lastip);
      }
      response.sendRedirect(urlString);
      return null;
  }

}