listmessageaction.java

来自「基于j2ee的电子留言系统」· Java 代码 · 共 54 行

package org.yeeku.action;

import org.apache.struts.action.*;
import org.apache.struts.validator.DynaValidatorForm;
import javax.servlet.http.*;

import org.yeeku.service.MessageManager;
import org.yeeku.action.base.BaseAction;
/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class ListMessageAction extends BaseAction
{
	public ActionForward execute(ActionMapping mapping,ActionForm form,
		HttpServletRequest request, HttpServletResponse response)throws Exception
	{
		int messageCount = messManager.getMessageCount();

		//获取总页数
		int pageCount = messManager.getPageCount(messageCount , MessageManager.MESSAGE_PAGE_SIZE);

		int pageNo;
		String pageNoStr = request.getParameter("pageNo");
		if (pageNoStr == null || pageNoStr.trim().equals(""))
		{
			pageNo = 1;
		}
		try
		{
			pageNo = Integer.parseInt(pageNoStr.trim());
		}
		catch (Exception e)
		{
			pageNo = 1;
		}
		//如果请求页已经超出了最大页
		if (pageNo > pageCount)
		{
			pageNo = pageCount;
		}
		request.setAttribute("pageCount" , pageCount);
		request.setAttribute("currentPage" , pageNo);
		request.setAttribute("messageList" , messManager.getAllMessageByPage(pageNo));
		return mapping.findForward("success");

	
	}
}