jsp 开发 百度 google 分页控件 struts2 兑现（转）

分页输出的实体

package com.loongtao.lucene.search.model;

import java.io.Serializable;

public class PageControl implements Serializable, Cloneable {

??? private static final long serialVersionUID = 3686354990469630498L;
??? private String pageName;
??? private String href;
??? private String isThisPage = "0";

??? public String getPageName() {
??????? return pageName;
??? }

??? public void setPageName(String pageName) {
??????? this.pageName = pageName;
??? }

??? public String getHref() {
??????? return href;
??? }

??? public void setHref(String href) {
??????? this.href = href;
??? }

??? public String getIsThisPage() {
??????? return isThisPage;
??? }

??? public void setIsThisPage(String isThisPage) {
??????? this.isThisPage = isThisPage;
??? }
}

? * 搜索引擎检索分页控件
?*
?* @author xiao.bin
?*

public class SearchPageControl {

???
??? public static List<PageControl> getQueryPageControlByApi(ApiObject api) {
??????? List<PageControl> list = new ArrayList<PageControl>();
??????? // 获取当前页
??????? int page = api.getPage();
??????? // 获取所有条数
??????? int allarticleCount = api.getArticlescount();
??????? // 获取当前页面大小
??????? int pagesize = api.getPagesize();
??????? // 计算页数
??????? int countPage = allarticleCount / pagesize;
??????? // 计算是否需要多加一页
??????? if (allarticleCount % pagesize != 0) {
??????????? countPage++;
??????? }
??????? int startX = 1;
??????? // 计算开始位置
??????? if (page > 4 && page <= countPage) {
??????????? startX = page - 4;
??????? }
??????? // 上一页
??????? if (page > 1 && page <= countPage) {
??????????? PageControl c = new PageControl();
??????????? c.setPageName("上一页");
??????????? c.setHref(appendHref(api, page - 1));
??????????? list.add(c);
??????? }
??????? for (int i = startX; i < startX + 10 && i <= countPage; i++) {
??????????? // 判断是否等于当前页
??????????? PageControl c = new PageControl();
??????????? c.setPageName(i + "");
??????????? c.setHref(appendHref(api, i));
??????????? if (i == page) {
??????????????? c.setIsThisPage("1");
??????????? }
??????????? list.add(c);
??????? }
??????? // 上一页
??????? if (page < countPage) {
??????????? PageControl c = new PageControl();
??????????? c.setPageName("下一页");
??????????? c.setHref(appendHref(api, page + 1));
??????????? list.add(c);
??????? }
??????? return list;
??? }

???
??? public static String appendHref(ApiObject api, int page) {
??????? StringBuffer sb = new StringBuffer("?");
??????? if (api.getTitle().length() > 0) {
??????????? sb.append(appendField("title", api.getTitle()));
??????? }
??????? if (api.getContent().length() > 0) {
??????????? sb.append(appendField("content", api.getContent()));
??????? }
??????? sb.append(appendField("page", page + ""));
??????? sb.append("pagesize=" + api.getPagesize());
??????? return sb.toString();
??? }

???
??? public static String appendField(String urlField, String urlValue) {
//urlencode转码
??????? return urlField + "="
??????????????? + StringUtils.StringToUrlEncode(urlValue, StringUtils.UTF8)
??????????????? + "&";
??? }

??? public static void main(String[] args) {

??????? ApiObject api = new ApiObject();
??????? api.setArticlescount("365");
??????? api.setPage("3");
??????? api.setTitle("xiao.bin");

??????? List<PageControl> list = getQueryPageControlByApi(api);

??????? for (PageControl pageControl : list) {
??????????? System.out.println(pageControl.getHref());
??????? }
??? }

}

由action 发送 List<PageControl>? 到页面上.

? struts2 标签 输出
??? <div id="page">
??? ??? ??? ??? ??? ??? ??? <s:iterator? value="#request.pagectr" id="id"?? status="pagelist">
??? ??? ??? ??? ??? ??? ??? ??? <s:if test="%{#id.isThisPage == 1}">
??? ??? ??? ??? ??? ??? ??? ??? ??? <strong>${pageName}</strong>
??? ??? ??? ??? ??? ??? ??? ??? </s:if>
??? ??? ??? ??? ??? ??? ??? ??? <s:else>
??? ??? ??? ??? ??? ??? ??? ??? <a href="<%=basePath%>search/list.html${href}">[${pageName}]</a>
??? ??? ??? ??? ??? ??? ??? ??? </s:else>???
??? ??? ??? ??? ??? ??? ??? ??? &nbsp;&nbsp;
??? ??? ??? ??? ??? ??? ??? </s:iterator>
??? ??? ??? ??? ??? ??? </div>

实现效果
[上一页]???? [1]???? 2???? [3]???? [4]???? [5]???? [6]???? [7]???? [8]???? [9]???? [10]???? [下一页]?