谷歌分页--------通用

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Servlet Java JSP Web SUN

Javabean包

=====================================================================================

package cn.csdn.domain;

import java.util.List;

public class Page {

private int nowpage;// 当前页
private int countrecord;// 总记录数
private int countpage;// 总页数

public static final int PAGESIZE = 5;// 每页显示的记录数
private int startindex;// 开始的索引值
private int endindex;// 结束的索引值
private List allentities;
private int listPageSize;

public int getListPageSize() {
return listPageSize;
}

public void setListPageSize(int listPage) {

   this.listPageSize = listPage ;

}

public Page() {

}

public int getNowpage() {
return nowpage;
}

public void setNowpage(int nowpage) {
this.nowpage = nowpage;
}

public int getCountrecord() {
return countrecord;
}

public void setCountrecord(int countrecord) {
this.countrecord = countrecord;
}

public int getCountpage() {
return countpage;
}

public void setCountpage(int countpage) {
this.countpage = countpage;
}

public int getStartindex() {
if (nowpage > this.getListPageSize()/2) {
   if (countpage - nowpage > this.getListPageSize()/2) {
    startindex = nowpage - this.getListPageSize()/2;
   } else {
    startindex = countpage -this.getListPageSize();
   }
}
return startindex;
}

public void setStartindex(int startindex) {
this.startindex = startindex;
}

public int getEndindex() {

if ((nowpage + this.getListPageSize()/2)>countpage) {
   return endindex = countpage;
} else {
   return endindex = endindex + nowpage - 1;

}

}

public void setEndindex(int endindex) {
this.endindex = endindex;
}

public List getAllentities() {
return allentities;
}

public void setAllentities(List allentities) {
this.allentities = allentities;
}

}

===============================================================================================

servlet中

==============================================================================================

package cn.csdn.web.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 cn.csdn.web.service.StudentServiceImpl;
import cn.csdn.domain.Page;
import cn.csdn.domain.Student;

public class ListStusServlet extends HttpServlet {

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

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
   throws ServletException, IOException {
    //1.设置编码
req.setCharacterEncoding("utf8");
    //2.获取当前页
Page stupage = new Page();
int nowpage=1;
String npage = req.getParameter("nowPage");
if(npage!=null){
   nowpage = Integer.valueOf(npage);
}
StudentServiceImpl ssi = new StudentServiceImpl();
stupage.setCountpage(ssi.getCountPage());
stupage.setNowpage(nowpage);
int pageListSize=10;
stupage.setStartindex(1);
stupage.setListPageSize(pageListSize);
if(pageListSize%2==0){
   stupage.setEndindex(stupage.getListPageSize()/2);
}else{
   stupage.setEndindex(stupage.getListPageSize()/2+1);
}
stupage.setCountpage(ssi.getCountPage());
List<Student> allentities = ssi.getNowPageInfo(nowpage);
stupage.setAllentities(allentities);
stupage.setCountrecord(ssi.getCountRecord());
        req.setAttribute("stupage", stupage);
req.getRequestDispatcher("liststs.jsp").forward(req, resp);
}

}

=========================================================================================

jsp网页中

==========================================================================================

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
   + request.getServerName() + ":" + request.getServerPort()
   + path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>全部学生</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">


</head>

<body>

<div align="center">
   <h1>
    显示所有的学员信息
   </h1>
   <table border="1px" cellpadding="0" cellspacing="0" width="600"
    height="400">
    <caption>
     学员信息
    </caption>
    <tr>
     <th>
      全选
     </th>
     <th>
      序列
     </th>
     <th>
      姓名
     </th>
     <th>
      年龄
     </th>
     <th>
      邮箱
     </th>
     <th>
      操作
     </th>
    </tr>

    <c:forEach items="${stupage.allentities}" var="student">
     <tr>
      <td>
       <input type="checkbox" name="chk" />
      </td>
      <td>
       ${student.id}
      </td>
      <td>
       ${student.name}
      </td>
      <td>
       ${student.age}
      </td>
      <td>
       ${student.email}
      </td>
      <td>
       编辑|删除
      </td>
     </tr>
    </c:forEach>
   </table>

   <div>
    <c:if test="${stupage.nowpage!=1}">
     <span><a href="./StudentList.do?nowPage=${stupage.nowpage-1}">上一页</a>

     </span>
    </c:if>
    <c:forEach begin="${stupage.startindex}" end="${stupage.endindex}" var="indexPage">
     <a href="./StudentList.do?nowPage=${indexPage}"
      <c:if test="${stupage.nowpage==indexPage}"> style="color: red" </c:if>><span>[
       ${indexPage} ]</span> </a>
    </c:forEach>
    <c:if test="${stupage.nowpage+1<=stupage.countpage}">
     <span><a href="./StudentList.do?nowPage=${stupage.nowpage+1}">下一页</a>
     </span>
    </c:if>
   </div>
</div>

</body>
</html>

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