topicaction.java

来自「雷霆论坛是用J2EE技术开发的功能强大、扩展性强、易于定制」· Java 代码 · 共 37 行

package lightningboard.action;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import lightningboard.Action;
import lightningboard.util.StringUtil;
import lightningboard.ActionException;
import lightningboard.ActionMessage;
import lightningboard.dao.DAOFactory;
import lightningboard.dao.TopicDAO;
import lightningboard.bean.TopicBean;
import lightningboard.Configuration;

public class TopicAction  implements Action  {
  public String excute(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException,ActionException {
      int t_id =StringUtil.parseInt(request.getParameter("t_id"));
      int start=StringUtil.parseInt(request.getParameter("start"));

      Configuration cfg=Configuration.getInstance();
      int range = StringUtil.parseInt(cfg.getValue("SYS.RECORDS_PER_PAGE"));
      if (start==0)
        start=1;
      DAOFactory daof=DAOFactory.getDAOFactory();
      TopicDAO topicDAO=daof.getTopicDAO();
      TopicBean topicBean=topicDAO.execute(t_id,start,range);
      if (topicBean!=null){
        request.setAttribute("topicBean",topicBean);
        return "/topic.jsp";
      }  else {
        request.setAttribute("actionMessage",new ActionMessage("no_such_topic"));
        return "/actionMessage.jsp";
      }
  }
}