JSP+Servlet+Javabean （MVC）分页(2)

package org.servlet;

import java.util.ArrayList;

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

import org.util.ContactBean;
import org.util.PageBean;

public class PageServlet extends javax.servlet.http.HttpServlet {

 public void doGet(HttpServletRequest

 request, HttpServletResponse response)
   throws javax.servlet.ServletException, java.io.IOException {
  response.setContentType("text/html");
  try {
   PageBean pagebean = new PageBean();
   ContactBean contact = new ContactBean();
   int pagecount = pagebean.countPage();//获取总共的页数
   String topage = request.getParameter("topage");//获取当前的页码
   if (Integer.parseInt(topage) > pagecount) {  //判断当前的页码是否越界,如果是的话就进行处理
    topage =String.valueOf(pagecount);
   } else if (Integer.parseInt(topage) <= 0) {
    topage = "1";
   }
   ArrayList news = contact.getData(topage, pagecount);
   request.getSession().setAttribute("pagecount", pagecount);
   request.getSession().setAttribute("showpage"