分页类

package com.a.a;

public class PageBean {

	private int nowpage;//当前页码 
	private int yemashuliang;//页码数量
	private int pagesize;//每页显示数量
	private int shouye;//首页
	private int weiye;//尾页页码
	private int shangyiye;//上一页页码
	private int xiayiye;//下一页页码
	private int kaishiye;// 显示页码的开始页
	private int jieshuye;//显示页码的结束页
	private int count;//查询出的数据量
	
	public PageBean(int count,int pagesize,int nowpage) {
		this.count=count;
		this.nowpage = nowpage;//当前页
		this.pagesize=pagesize;
		yemashuliang = 1;//页码数
		yemashuliang = count / pagesize + 1;
		if (count % pagesize == 0) {
			yemashuliang = count / pagesize;
		}
		shouye = 1;// 首页
		weiye = yemashuliang;// 尾页
		shangyiye = nowpage - 1;// 上一页
		if (shangyiye >= 1) {
			shangyiye = 1;
		}
		xiayiye = nowpage + 1;// 下一页
		if (xiayiye >= yemashuliang) {
			xiayiye = yemashuliang;
		}
		if (nowpage>=weiye) {
			this.nowpage=weiye;
		}
		kaishiye=1;
		kaishiye=nowpage-4;
	
		jieshuye=nowpage+5;
		if (nowpage%2==1 ) {
			jieshuye=nowpage+5;
		}
		if (jieshuye>=yemashuliang) {
			jieshuye=yemashuliang;
			kaishiye=jieshuye-9;
		}
		if (jieshuye<10&&yemashuliang>=10) {
			jieshuye=10;
		}
		if (kaishiye<=0) {
			kaishiye=1;
		}
		if (kaishiye==1 && yemashuliang<10 && jieshuye!=yemashuliang ) {
			jieshuye=yemashuliang;
		}
		
	}
	public PageBean(){}
	public int getNowpage() {
		return nowpage;
	}
	public void setNowpage(int nowpage) {
		this.nowpage = nowpage;
	}
	public int getYemashuliang() {
		return yemashuliang;
	}
	public void setYemashuliang(int yemashuliang) {
		this.yemashuliang = yemashuliang;
	}
	public int getMeiyexianshi() {
		return pagesize;
	}
	public void setMeiyexianshi(int pagesize) {
		this.pagesize = pagesize;
	}
	public int getShouye() {
		return shouye;
	}
	public void setShouye(int shouye) {
		this.shouye = shouye;
	}
	public int getWeiye() {
		return weiye;
	}
	public void setWeiye(int weiye) {
		this.weiye = weiye;
	}
	public int getShangyiye() {
		return shangyiye;
	}
	public void setShangyiye(int shangyiye) {
		this.shangyiye = shangyiye;
	}
	public int getXiayiye() {
		return xiayiye;
	}
	public void setXiayiye(int xiayiye) {
		this.xiayiye = xiayiye;
	}
	public int getCount() {
		return count;
	}
	public void setCount(int count) {
		this.count = count;
	}
	public int getPagesize() {
		return pagesize;
	}
	public void setPagesize(int pagesize) {
		this.pagesize = pagesize;
	}
	public int getKaishiye() {
		return kaishiye;
	}
	public void setKaishiye(int kaishiye) {
		this.kaishiye = kaishiye;
	}
	public int getJieshuye() {
		return jieshuye;
	}
	public void setJieshuye(int jieshuye) {
		this.jieshuye = jieshuye;
	}
}

//在Action中的使用
public String executeImg() {
		if (nowpage==null) {
			nowpage=1;
		}
		/*分页信息*/ 
		int count=0;
		/*分页信息  判断每页数量cookie*/
		//数据总数
		count=newsInfoDAO.getNewsinfoCountNewstype(t);
		if (count!=0) {
			p=new PageBean(count,pagesize,nowpage);
			
			//获取分类下的文档列表
			newsInfos=newsInfoDAO.getNewsinfoPageNewstype(t,p.getPagesize() ,p.getNowpage());
		}
		if (t!=null) {
			newsTypecn=newsTypecnDAO.findByNewstypeid(language, t);
		}
		return SUCCESS;
	}

//JSP+struts2在页面中的使用
<!-- page -->
<s:if test="p!=null">
<div class="pagination">
<s:if test="p.nowpage!=p.shouye">
    <a id="previous-page" href="/<s:property value="#locale" />/news/llist/<s:property value="t" />/<s:property value="p.nowpage-1" />.html" ><s:text name="news_list_shangyiye" /></a>
</s:if>
<s:iterator id="page" begin="p.kaishiye" end="p.jieshuye" >
	<s:if test="#page==p.nowpage"> 
		<span class="current"><s:property value="#page" /></span>
	</s:if>
	<s:else >
	  <a href="/<s:property value="#locale" />/news/llist/<s:property value="t" />/<s:property value="#page" />.html" ><s:property value="#page" /></a> 
	</s:else>
</s:iterator>
<s:if test="p.nowpage!=p.weiye">
	<a id="next-page" href="/<s:property value="#locale" />/news/llist/<s:property value="t" />/<s:property value="p.nowpage+1" />.html" /><s:text name="news_list_xiayiye" /></a>
</s:if>
</div>
</s:if><!-- page -->