fooddetailaction.java

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/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.accp.struts.action;

import java.util.List;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.accp.dao.FoodDAO;
import com.accp.dao.Goods;
import com.accp.dao.PageBean;

/** 
 * MyEclipse Struts
 * Creation date: 10-21-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class FooddetailAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		FoodDAO fd=new FoodDAO();
		String typeid=request.getParameter("sid");	//食品类别编号	
		System.out.println("typeid="+typeid);
		request.setAttribute("type", typeid);
		if(typeid!=null)
		{
		PageBean bean=null;	//自定义PageBean类	
		int pagesize=5;//每页显示数据的条数
		int pagecount=0;//总共分多少页
		if(request.getParameter("pages")==null)
		{
			System.out.println("第一次执行");
			
		//第一次执行
		  bean=new PageBean();			
		//获取总条数
		  bean.setTotal(fd.GetTotalnum(typeid));
	    //设置每页条数
		  bean.setPagesize(pagesize);
		//计算出要分多少页
		  if(bean.getTotal()%pagesize==0)
		  {
			pagecount=bean.getTotal()/pagesize;
		  }
		  else
		    {
			pagecount=bean.getTotal()/pagesize+1;
		  }
		  System.out.println("pagecount="+pagecount);
		  bean.setPagenum(pagecount);
	    	//将数据封装到bean
		  bean.setPagedata(fd.GetEveryPageInfo(0, pagesize, typeid));
		  System.out.println("gggggggggg"+bean.getPagedata().size());
		}
		else
		{
			int pages=Integer.parseInt(request.getParameter("pages"));//获得要显示的第几页数
			
			//从会话中取得bean对象
			bean=(PageBean)(request.getSession().getAttribute("pagebean"));
			bean.setCurrentpage(pages);
			bean.setPagedata(fd.GetEveryPageInfo((pages-1)*pagesize, pagesize, typeid));
			System.out.println("currentpage="+pages);
			
		}
		 request.getSession().setAttribute("pagebean", bean);	
		
		}
		
		return mapping.findForward("viewfood");
	}
}