fellowshipservice.java

基于j2ee的物流软件

package com.wuliu.doservlet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.wuliu.dao.FellowshipDAO;

public class FellowshipService implements Service {

	public String doService(HttpServletRequest request,
			HttpServletResponse response) {
		FellowshipDAO fd = new FellowshipDAO();
		final int pageSize = 8;
		int num = 0;
		int maxNum = fd.getPageNum(pageSize);
		
		if(request.getParameter("num") != null){
			num = Integer.parseInt(request.getParameter("num"));
		}
		String leaf = request.getParameter("leaf");
		if(leaf != null && leaf.equals("previous")){
			num = num - 1;
			if(num < 0){
				num = 0;
				request.setAttribute("prompt", "此页已经是第一页!");
			}
		}else if(leaf != null && leaf.equals("next")){
			num = num + 1;
			if(num >= maxNum){
				num = maxNum - 1;
				request.setAttribute("prompt", "此页已经是最后一页!");
			}
		}else if(leaf != null && leaf.equals("last")){
			num = maxNum - 1;
		}else if(leaf != null && leaf.equals("page")){
			num = num - 1;
		}
		request.setAttribute("pagesize", pageSize);
		request.setAttribute("num", num);
		request.setAttribute("maxnum", maxNum);
		
		request.setAttribute("list", fd.selectFellowshipPage(pageSize, num));
		
		return "admin/fellowship/fellowship.jsp";
	}
}