splitaction.java~4~

网上购书系统

package action;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import datamanage.dao.DaoBook;
import pagebean.ModifyPageBean;


public class SplitAction extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        int pagesize = 5;
        String page = request.getParameter("page");
        DaoBook daobook = new DaoBook();
        int totalpage = daobook.getTotalpage(pagesize);
        if (page == null) {
            page = "1";
        }
        int currentpage = Integer.parseInt(page);
        if (currentpage < 1) {
            currentpage = 1;
        }
        if (currentpage > totalpage) {
            currentpage = totalpage;
        }
        List list = daobook.getCurrentPageData(pagesize, currentpage);
        ModifyPageBean modifypage = new ModifyPageBean();
        modifypage.setBooks(list);
        modifypage.setCurrentpage(currentpage);
        modifypage.setTotalpage(totalpage);
        request.getSession().setAttribute("modifypagedata", modifypage);
        response.sendRedirect("SelectBooks.jsp");
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}