//这是action
 2 private ArrayList<User> userlist;
 3     List<User> users;
 4     private String tid;
 5     private int pageNum;
 6     private int pageSize;
 7     private PageUtil pu;//省略了get/set方法
 8 //按条件查询所有用户1
 9     @SuppressWarnings("unchecked")
10     public String usersInDelete(){
11         //设置每页显示的行数
12         if(session.getAttribute("pageSize")==null){
13             this.pageSize=5;
14         }
15         if(pageNum==0||"".equals(pageNum)){
16             Map<String,String> map=new HashMap<String,String>();
17             map.put("tid", tid);
18             userlist=userService.queryUsers(map);
19             PageUtil pu=new PageUtil(userlist,pageSize);
20             users=(List<User>)userlist.subList(pu.getBeginIndex()-1, pu.getEndIndex());
21             //保存分页信息
22             ActionContext ac=ActionContext.getContext();
23             Map<String,Object> sessionMap=ac.getSession();
24             sessionMap.put("pageSize", pageSize);
25             sessionMap.put("userlist", userlist);
26             sessionMap.put("users", users);
27             sessionMap.put("pu", pu);
28         }else{
29             //从session中获取所有雇员信息
30             userlist=(ArrayList<User>)session.getAttribute("userlist");
31             //从session中获取分页信息
32             pu=(PageUtil)session.getAttribute("pu");
33             pu.setPageNum(pageNum);
34             //根据起始行与结束行获取对应的页面数据
35             users=(List<User>)userlist.subList(pu.getBeginIndex()-1, pu.getEndIndex());
36             session.setAttribute("users", users);
37             session.setAttribute("pu", pu);
38         }
39         
40         return "usersInDelete";
41     }
42 
43 下面是页面的js代码
44 <script language="javascript">
45     //初始化每页显示条数
46     $(function(){
47         var page = $("#page").val();
48         $("#pageSize").val(page);
49         
50     });
51     //改变每页显示行数
52     function pagesize(){
53         var pageSize = $("#pageSize option:selected") .val();
54         parent.location.href = "queryUsers!usersInUpdate?pageSize="+pageSize;
55     }
56     </script>

页面分页栏：

<table width="773" border="0" align="center" cellpadding="0" cellspacing="0">
<tr align="center" style="width:60%">
<td width="91" align="center" class="text_cray">&nbsp;</td>
<td align="center" class="text_cray">&gt;&gt;
<c:forEach begin="1" end="${pu.pageCount}" var="pageNum">
<a href="<%=basePath%>queryUsers!usersInUpdate?pageNum=${pageNum}">${pageNum}</a>
</c:forEach>
&lt;&lt;</td>
<td width="91" align="right" class="text_cray1" style="width:40%"><label class="text_cray"> 每页显示
<input type="hidden" id="page" value="${pageSize}">
<select name="select2" id="pageSize" onchange="pagesize()">
<option>5</option>
<option>10</option>
</select>
条信息</label></td>
</tr>
<tr align="center">
<td colspan="10" style="font-size: 12px">总页数:${pu.pageCount } | 总行数: ${pu.rowCount } | 当前页数:${pu.pageNum } </td>
</tr>
</table>