httpservlet里单纯分页

时间：2022-07-15 22:38:51
    @Override

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

        // TODO Auto-generated method stub

             //对List数据分页

             req.setAttribute("list", list);

     int pageNos;

     if (req.getParameter("pageNos") == null

             || Integer.parseInt(req.getParameter("pageNos")) < 1) {

         pageNos = 1;

     } else {

         pageNos = Integer.parseInt(req.getParameter("pageNos"));

     }

     req.setAttribute("pageNos", pageNos);

     int size=list.size();

     int countPage = size%4==0? size/4:size/4+1;

     // 总页数

     req.setAttribute("countPage", countPage);

     req.getRequestDispatcher("search.jsp").forward(req, resp);

}
<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

  <base href="<%=basePath%>">

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>结果</title>

 <link href="css/style.css" rel="stylesheet">

</head>

<body>

    <%    

        String 查找的参数 = request.getParameter("查找的参数");

    %>

<form action="search" method="get" enctype="application/x-www-form-urlencoded">

<img src="data:image/logo.jpg" height="40px"/>

<input id="css1" name="查找的参数" value=<%=查找的参数%> maxlength="30">

<span ><input type="submit" id="css2" value="搜索一下"></span>

   <c:forEach var="li" items="${list}" begin="${(pageNos-1)*4 }" end="${pageNos*4-1}">

  <br>

   <p>数据  </p>

   <br/>

   </c:forEach>

   <center>

   <c:if test="${pageNos>1 }">

<a href="search?查找的参数=<%=查找的参数%>&pageNos=1" >首页</a>

<a href="search?查找的参数=<%=查找的参数%>&pageNos=${pageNos-1 }">上一页</a>

</c:if>

<c:if test="${pageNos <countPage }">

<a href="search?查找的参数=<%=查找的参数%>&pageNos=${pageNos+1 }">下一页</a>

<a href="search?查找的参数=<%=查找的参数%>&pageNos=${countPage }">末页</a>

</c:if>

</center>

<h4 align="center">共${countPage}页

<input type="text" value="${pageNos}" name="pageNos" size="1">页

<input type="submit" value="go">

</h4>

</form>

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