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public Page queryForPage(int pageSize, int page)
{
final String hql = "from SNews";// 查询语句
int allRow = this.allNews().size();
int totalPage = Page.countTotalPage(pageSize, allRow);// 总页数
final int offset = Page.countOffset(pageSize, page);// 当前页开始记录
final int length = pageSize;// 每页记录数
final int currentPage = Page.countCurrentPage(page);
List<SNews> list = this.findAllNews(hql,offset,length);// "一页"的记录
//设置一个页面list
List pageList = new ArrayList();
//把记录添加到list中
for (int i = 0; i < totalPage; i++)
{
pageList.add(i, i + 1);
}
Page pageBean = new Page();
pageBean.setPageSize(pageSize);
pageBean.setCurrentPage(currentPage);
pageBean.setAllRow(allRow);
pageBean.setTotalPage(totalPage);
pageBean.setList(list);
pageBean.setPageList(pageList);
//System.out.println(pageBean.getAllRow());
pageBean.init();
return pageBean;
}
String page =ServletActionContext.getRequest().getParameter("page");
String[] pages = request.getParameterValues("pageInput");
List pagelist = new ArrayList();
pageBean = this.service.queryForPage(5,Integer.parseInt(page));
newsList = pageBean.getList();
}
public class Serch extends ActionSupport
{
private String bid;
private String bname;
private int number;
private int k;//储存最大页面数
private int pageNow=1; //页码数,初始为1
private int pageSize = 5 ; //页面行数
private int intRowCount;//总行数
private int intPageCount;//总页数
private int lastPage;
private int p=1;
.....set/get;
public String execute() throws Exception
{
List list=new List();
java.util.List L=new ArrayList();
L=list.list();
intRowCount=L.size();
System.out.println("链表的长度:"+L.size());
if(L.size()%pageSize==0) //判断分多少页
this.lastPage=L.size()/pageSize;
else
this.lastPage=L.size()/pageSize+1;
this.setIntPageCount(this.lastPage);//存入总页数
if(this.pageNow<1)//如果当前页码是第一页在点第一页的时候也跳转到第一页
this.pageNow=1;
if(this.pageNow>this.lastPage)//同理只不过是最后一页
this.pageNow=this.lastPage;
/*
*
* 假设取其中20-25条
*
*
*
*/
int startIndex=(this.pageNow-1)*pageSize;//截止条目开始,第20条
int endIndex=startIndex+pageSize;//截止条目结束 第25条
if(endIndex>=L.size())
endIndex=L.size();
L= L.subList(startIndex, endIndex);
System.out.println("执行");
ActionContext.getContext().put("list", L);
return "success";
}
@Override
public void validate() {
// TODO Auto-generated method stub
super.validate();
}
}
前台显示:
共<s:property value="intRowCount"/>记录
共<s:property value="intPageCount"/>页
第<s:property value="pageNow"/>页
<s:url action="Serch.action" id="url">
<s:param name="pageNow">
<s:property value="1" />
</s:param>
</s:url>
<s:a href="%{url}">首页</s:a>
<s:url action="Serch.action" id="url">
<s:param name="pageNow">
<s:property value="%{pageNow-1}" />
</s:param>
</s:url>
<s:a href="%{url}">上一页</s:a>
<s:url action="Serch.action" id="url">
<s:param name="pageNow">
<s:property value="%{pageNow+1}" />
</s:param>
</s:url>
<s:a href="%{url}">下一页</s:a>
<s:url action="Serch.action" id="url">
<s:param name="pageNow">
<s:property value="lastPage" />
</s:param>
</s:url>
<s:a href="%{url}">尾页</s:a>