package com.servlets;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 com.Dao.PageQueryDao;import com.beans.Book;public class PageQueryServlet extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException { int currpage=1; // if(request.getParameter("page") != null){ // currpage = Integer.parseInt(request.getParameter("page")); // } PageQueryDao pagedao = new PageQueryDao(); List list = pagedao.getPageList(currpage);//查询当前页记录 request.setAttribute("list", list); int pages; //计算查询总页数 int count = pagedao.FindCounts(); if(count%Book.PAGE_SIZE == 0){ pages = count/Book.PAGE_SIZE; } else{ pages = count/Book.PAGE_SIZE+1; } System.out.println(pages); StringBuffer sb=new StringBuffer(); //构建分页条 for(int i = 1;i <= pages;i++){ if(i == currpage){ sb.append("『" + i + "』"); } else{ sb.append(" 下一页 "); } sb.append(" "); } request.setAttribute("bar", sb.toString()); request.getRequestDispatcher("books.jsp").forward(request, response); //请求转发 } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); }}
出现下面的错误。
