测试

Entity

public class Entry {
    private int entryID;
    private boolean asDraft;
    private String title;
    private String content;
    
    
    /**
     * For further extension
     */
    private boolean setTop;
    
    /**
     * For further extension, make it easy to be searched by google
     */
    private String staticLinkURL;

    public int getEntryID() {
        return entryID;
    }

    public void setEntryID(int entryID) {
        this.entryID = entryID;
    }

    public boolean isAsDraft() {
        return asDraft;
    }

    public void setAsDraft(boolean asDraft) {
        this.asDraft = asDraft;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    
    public boolean isSetTop() {
        return setTop;
    }

    public void setSetTop(boolean setTop) {
        this.setTop = setTop;
    }

    public String getStaticLinkURL() {
        return staticLinkURL;
    }

    public void setStaticLinkURL(String staticLinkURL) {
        this.staticLinkURL = staticLinkURL;
    }
    
    
}

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;

/**
 * Servlet implementation class PostsServlet
 */
public class PostsServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PostsServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String pageNumberStr = request.getParameter("pageNumber");
        int pageNumber = 1;
        if(pageNumberStr!=null && !pageNumberStr.isEmpty())
        {
            pageNumber = Integer.parseInt(pageNumberStr);
        }
        
        int pageSize = 10; //分页大小
        int totalPosts = PagingDAO.entryList.size(); //总文章数
        int totalPages = totalPosts/pageSize + ((totalPosts%pageSize)>0?1:0); //计算得出的总页数
        
        request.setAttribute("pageSize", pageSize);
        request.setAttribute("totalPosts", totalPosts);
        request.setAttribute("pageNumber", pageNumber);
        request.setAttribute("totalPages", totalPages);
        
        List<Entry> entryList = PagingDAO.getEntryList(pageNumber, pageSize);
        System.out.println("entryList:"+ entryList.size());
        request.setAttribute("entryList", entryList);
        
        request.getRequestDispatcher("index.jsp").forward(request, response);        
    }

}

dao

import java.util.ArrayList;
import java.util.List;

public class PagingDAO {

    public static List<Entry> entryList = new ArrayList<Entry>();

    static {
        for (int i = 0; i < 116; i++) {
            Entry e = new Entry();
            e.setEntryID(i);
            e.setTitle("The title for the article " + i + " ");
            entryList.add(e);
        }
    }

    public static List<Entry> getEntryList(int pageNum, int pageSize) {
        System.out.println(pageNum+";"+pageSize);
        List<Entry> ret = new ArrayList<Entry>();
        int start = (pageNum - 1) * pageSize;
        int end = start + pageSize - 1;
        System.out.println(start+"-"+end);
        if (start >= entryList.size())
            return ret;
        
        for (int i = start; i <= end; i++) {
            if (i < entryList.size())
                ret.add(entryList.get(i));
        }
        
        return ret;
    }
}

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

page Size : ${pageSize}
<br />
Total Posts: ${totalPosts}
<br />
Total Pages: ${totalPages}
<br />
Current Page: ${pageNumber}
<hr />

<table>
    <thead>
        <tr align="center">
            <td width="10%">Article ID</td>
            <td width="70%">Article Title</td>
            <td colspan="3">Actions</td>
        </tr>
    </thead>
    <tbody>
        <c:forEach items="${entryList}" var="entry">
            <tr align="center">
                <td>${entry.entryID}</td>
                <td>${entry.title}</td>
                <td><a href="viewEntry?entryID=${entry.entryID}">View</a></td>
                <td><a href="editEntry?entryID=${entry.entryID}">Edit</a></td>
                <td><a href="deleteEntry?entryID=${entry.entryID}">Delete</a></td>
            </tr>
        </c:forEach>
    </tbody>
    <tfoot>
        <tr align="center">
            <td colspan="5">
                <jsp:include page="paging_footer.jsp"></jsp:include>
            </td>
        </tr>
    </tfoot>
</table>

<hr/>

paging_footer.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<script type="text/javascript">
function gotoSelectedPage()
{
    var x = document.getElementById("navigatorForm");
    //alert("Original action: " + x.action)
    x.submit();
}
</script>
<form action="Posts" method="get" id="navigatorForm">
    <a href="Posts?pageNumber=1">首页</a> 
    <c:if test="${pageNumber>1}">
        <a href="Posts?pageNumber=${pageNumber-1}">上一页</a>
    </c:if> 
    跳转到第 <select name="pageNumber" onchange="gotoSelectedPage();">
    <c:forEach begin="1" end="${totalPages}" step="1" var="pageIndex">
        <c:choose>
            <c:when test="${pageIndex eq pageNumber}">
                <option value="${pageIndex}" selected="selected">${pageIndex}</option>
            </c:when>
            <c:otherwise>
                <option value="${pageIndex}">${pageIndex}</option>
            </c:otherwise>
        </c:choose>
    </c:forEach>
    </select>页 
    <c:if test="${pageNumber<totalPages}">
        <a href="Posts?pageNumber=${pageNumber+1}">下一页</a>
    </c:if> 
    <a href="Posts?pageNumber=${totalPages}">末页</a>
</form>