jsp+struts2+javabean实现长文章分页

首先，要说明的是：文章是用fckeditor编辑成的html代码。网上有很多方法，都只是截取字符，html标签很容易就被分开了。以至于前台显示时出错。
1。创建自己的类（用来处理fckeditor编辑器生成的代码，即文章内容）:类的代码如下：

public class OnepageUtil {
   
    private int size = 800;// 每页显示内容量
    private int currentPage = 1;//设置第一页为初始页
    public int getCurrentPage() {
        return currentPage;
    }
    public void setCurrentPage(int currentPage) {
        this.currentPage = currentPage;
    }
    private int pages = 0;
    private int length = 0;
    String PageInfo = "";
    //前台显示的文章内容
    public String getSubContent(String content){
        ArrayList newContent = new ArrayList();
        newContent = acticlePager(content);
        String cont = "文章已结束...";
        pages = countPages(content);
        if (currentPage > pages)
            currentPage = pages;
        try{
            cont = newContent.get(currentPage-1).toString();
        }catch(Exception e){
           
        }
        return cont;
    }
    //将文章内容分成数组
    public ArrayList acticlePager(String content) {
        ArrayList list = new ArrayList();
        boolean end = true;
        length = content.length();
        while (end) {
           String temp = "";
           /**
            * 如果内容已经少于默认数，就直接作为结尾返回
            */
           if (size >= length) {
            temp = content;
            list.add(temp);
            break;
           }
            /**
            * temp为本次截取内容段 temp2为余下的内容段
            */
            temp = content.substring(0, size);
            String temp2 = content.substring(size + 1, length);
            String session = temp;
            int a = 0;
            int b = 0;
           /**
            * 首先计算 <和>是否相等
            */
            while (temp.indexOf(" <") > -1) {
                a++;
                temp = temp.substring(temp.indexOf(" <") + 1, temp.length());
            }
            temp = session;
            while (temp.indexOf(">") > -1) {
                b++;
                temp = temp.substring(temp.indexOf(">") + 1, temp.length());
            }
            if (a != b) {
                int p = temp2.indexOf(">");
                temp = content.substring(0, size + p + 2);
                temp2 = content.substring(size + p + 2, length);
                session = temp;
            }
           /**
            * 如果相等就再计算 <P和
            * </p>
            * 是否吻合
            */
            if (a == b) {
                a = 0;
                b = 0;
                temp = session;
                while (temp.indexOf(" <P") > -1) {
                    a++;
                    temp = temp.substring(temp.indexOf(" <") + 1, temp.length());
                }
                temp = session;
                while (temp.indexOf(" </P") > -1) {
                    b++;
                    temp = temp.substring(temp.indexOf(">") + 1, temp.length());
                }
                if (a == b) {
                    break;
                }
                if (a != b) {
                    int p = temp2.indexOf(" </P>");
                    temp = content.substring(0, size + p + 5);
                    try {
                        if ((size + p + 5) < length)
                            temp2 = content.substring(size + p + 5, length);
                    } catch (Exception e) {
                        temp2 = "";
                    }
               }
            }
            /**
            * 余下内容更新
            */
            content = temp2;
            length = content.length();
            // System.out.println("cut after:"+content);
            System.out.println("cut after:" + temp);
            list.add(temp);
            /**
            * 如果不存在余下内容了就结束本次操作
            */
            if (temp2.equals("") || temp2.length() < 1)
                end = false;
        }
        return list;
    }
    //计算总页数
    public int countPages(String content){
        length = content.length();
        if (length % size == 0) {
           pages = length / size;
        } else {
           pages = length / size + 1;
        }
        return pages;
    }
    //生成页码导航
    public String pageInfo(String content,int pageNo){
        pages = countPages(content);
        for (int i = 1; i <= pages; i++)
        {
            if (i == currentPage)
                PageInfo += "" + i + "";
            else
                PageInfo += " <a href=/article/"+pageNo+"_" + i + ".html>[" + i + "] </a> ";

        }
        if (currentPage > 1)
            PageInfo = " <a href=/article/"+pageNo+"_" + (currentPage - 1) + ".html>上一页 </a>" + PageInfo;
        if (currentPage < pages)
            PageInfo += " <a href=/article/"+pageNo+"_" + (currentPage + 1) + ".html>下一页 </a>";
        return PageInfo;
    }
}

2。页面用以下方式直接调用:
<jsp:useBean id="htmlUtil" class="com.yzfc.util.OnepageUtil"></jsp:useBean>

   用此方法获取当前页码并设置为   htmlUtil   的属性：
    <%
    if (request.getAttribute("ps") != null){ 
           int currentPage = Integer.parseInt((String)request.getAttribute("ps"));
           htmlUtil.setCurrentPage(currentPage);
    }
    %>
用此方法显示内容：
<%=htmlUtil.getSubContent(article.getContent().toString()) %>
3.   编辑调用的action :加入如下代码：

    private String ps;      //用来传递参数
    public String getPs() {
        return ps;
    }

    public void setPs(String ps) {
        this.ps = ps;
    }

4。 利用apache的 url  静态化转化为真正的请求url：   此规则在.htaccess文件中
      RewriteRule ^article/([0-9].*)_([0-9].*).html$ findArticleById.action?article.articleid=$1&ps=$2
5。