pageshowmessagelist.java

JavaBean+Servlet+jsp开发的《网上购物系统》

package test.servlet;

import java.io.IOException;
import java.util.List;

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


import test.service.MessageBoardServiceImpl;

import test.vo.MessageInfo;

public class PageShowMessageList extends HttpServlet {

	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		int currentPage = 0;
		int totalPage = 0;
		if (req.getParameter("currentPage") != null
				&& req.getParameter("totalPage") != null) {
			currentPage = Integer.parseInt(req.getParameter("currentPage"));
			totalPage = Integer.parseInt(req.getParameter("totalPage"));
		} else {
			
			MessageBoardServiceImpl messageBoardServiceImpl = new MessageBoardServiceImpl();
			
			
			int temp = messageBoardServiceImpl.getMessageInfos().size();
			totalPage = (temp + 4) / 5;
		}


		MessageBoardServiceImpl messageBoardServiceImpl = new MessageBoardServiceImpl();
		
		
		List<MessageInfo> list = messageBoardServiceImpl.getMessageInfos(currentPage);
			
		req.setAttribute("currentPage", currentPage);
		req.setAttribute("totalPage", totalPage);
		req.setAttribute("list", list);
		req.getRequestDispatcher("index.jsp?page=liuyan.jsp").forward(req, resp);
	}

	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		doGet(req, resp);
	}

}