Java实现分页的前台页面和后台代码
程序员文章站
2024-03-03 20:35:34
本文实例为大家分享了java分页展示的具体代码，供大家参考，具体内容如下
先上图吧，大致如图，也就提供个思路（ps：使用了ssh框架）
前台jsp页面...
本文实例为大家分享了java分页展示的具体代码，供大家参考，具体内容如下
先上图吧，大致如图，也就提供个思路（ps：使用了ssh框架）
前台jsp页面
<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="utf-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html>
<head>
<title>数据交易猫</title>
<script type="text/javascript">
//1分页下，动态添加disable给分页按钮
/*
$(function(){
var mypageid="#"+$("#hidcurrentpage").val();
var mypageaid="#"+$("#hidcurrentpage").val()+" a";
$(mypageaid).addclass('main-bgcolor');
$(mypageaid).attr('href','javascript:void(0)')
$(mypageid).addclass('disabled');
$(mypageid).addclass('disabledcontrol');
})
*/
//
$(function(){
})
//根据页数查询数据列表
function queryrequirlistbypage(i) {
var pageno=i;
var sortvalue=$('#hidsortvalue').val();
$.ajax({
url:'${pagecontext.request.contextpath}/bid/reaction_queryrequirlistbypage.action',
type:'post',
data:{
sortvalue:sortvalue,
pageno:pageno
},
success:function(datas){
$('#requirecontentdiv').html(datas);
},
error:function(){
alert("失败");
},
});
}
//根据下拉查询数据列表
function selectpage(obj){
var pageno=obj.options[obj.selectedindex].value;
var sortvalue=$('#hidsortvalue').val();
$.ajax({
url:'${pagecontext.request.contextpath}/bid/reaction_queryrequirlistbypage.action',
type:'post',
data:{
sortvalue:sortvalue,
pageno:pageno
},
success:function(datas){
$('#requirecontentdiv').html(datas);
},
error:function(){
alert("失败");
},
});
}
//根据下拉选择排序方式
function selectsort(obj){
var sortvalue = obj.options[obj.selectedindex].value;
var pageno =1;
$.ajax({
url:'${pagecontext.request.contextpath}/bid/reaction_queryrequirlistbypage.action',
type:'post',
data:{sortvalue:sortvalue,
pageno:pageno
},
success:function(datas){
$('#requirecontentdiv').html(datas);
},
error:function(){
alert("失败");
},
});
}
$(document).ready(function(){
var backsortvalue=$('#backsortvalue').val();
console.log("backsortvalue"+backsortvalue)
$("#category option").each(function(){
var thisid='#'+this.id;
var thisvalue=this.value;
if(backsortvalue==thisvalue){
$(thisid).attr('selected','selected');
}
});
})
</script>
</head>
<body>
<!-- 内容-->
<div class="well">
<!-- 标题-->
<div class="box"><h3><span class="glyphicon glyphicon-list" ></span>需求列表</h3></div>
<!-- 筛选条件-->
<div class="box">
<div class="row">
<div class="col-xs-12">
<span>筛选：按</span>
<select id="category" name="category" onchange="selectsort(this)">
<option id="categorytime" value="publishdatetime">最新</option>
<option id="categoryprice" value="price">价格降序</option>
<input id="backsortvalue" type="hidden" value="${sortvalue}">
</select>
<hr class="mrgzero mrgtopsma"/>
</div>
</div>
</div>
<!-- 内容-->
<input type="hidden" name="hidcurrentpage2" id="hidcurrentpage" value="${currentpage}">
<input type="hidden" id="hidallpage" value="${allpage}">
<input type="hidden" id="hidsortvalue" value="${sortvalue}">
<s:iterator value="#requilist">
<div class="data-down-box">
<div class="row">
<div class="col-xs-12">
<h4 class="ellipsis"><a href="${pagecontext.request.contextpath}/bid/bidaction_querybyid?id=${id}" rel="external nofollow" onclick="reward()">${title}</a></h4>
</div>
</div>
<div class="row mrgtopsma">
<div class="col-xs-12 ">
<p class="data-provider padleftbig sec-color ellipsis">悬赏积分：<span>${price}</span></p>
<p class="data-intro padleftbig ellipsis sec-color">需求描述：<span>${requirementdescription}</span></p>
</div>
</div>
<hr/>
</div>
</s:iterator>
<!-- 分页 -->
<div id="repagerdiv" class="repagerdiv box">
<nav>
<ul class="pager">
<!-- 判断当前页是否位1，如果不为1则显示上一页， -->
<s:if test="1 == #currentpage">
</s:if>
<s:else>
<li>
<a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" aria-label="previous" onclick="queryrequirlistbypage(${currentpage-1})">
<span aria-hidden="true">«</span>
</a>
</li>
</s:else>
<!-- 首页 -->
<li><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="queryrequirlistbypage(1)">首页</a></li>
<li>
<span><span class="main-color">${currentpage}</span>/ ${allpage}页</span>
</li>
<!-- 尾页 -->
<li><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="queryrequirlistbypage(${allpage})">尾页</a></li>
<!-- 判断当前页和总页数，小于则显示下一页， -->
<s:if test="#currentpage < #allpage">
<li>
<a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" aria-label="next" onclick="queryrequirlistbypage(${currentpage+1})">
<span aria-hidden="true">»</span>
</a>
</li>
</s:if>
<li>
<span class="skippagespan">跳转到第
<select onchange="selectpage(this)">
<s:iterator var="lst" begin="1" end="#allpage" step="1">
<s:if test="%{#lst == #currentpage}">
<option selected="selected" value="<s:property/>" ><s:property/></option>
</s:if>
<s:else>
<option value="<s:property/>" ><s:property/></option>
</s:else>
</s:iterator>
</select>
页
</span>
</li>
</ul>
</nav>
</div>
</div>
<hr/>
</body>
</html>
action
//查询需求列表
public string queryrequirlistbypage(){
int pagesize=5;//每页记录
string hql="select r from requirement r where r.restatus !=2 ";
if(sortvalue == null || sortvalue.length() <= 0){
hql=hql+"order by r.publishdatetime desc";
actioncontext.getcontext().put("sortvalue", "publishdatetime"); //当前页码条件
session.put("sessionreqsortvalue","publishdatetime");
}else{
hql=hql+"order by r."+sortvalue+" desc";
actioncontext.getcontext().put("sortvalue", sortvalue); //当前页码条件
session.put("sessionreqsortvalue",sortvalue);
}
long icount=requirementservice.countallre();//总记录数
long allpage;//总页数
//判断是否能整除，能则直接，不能则+1；
if((icount%pagesize)==0){
allpage=icount/pagesize;
}
else{
allpage=(icount/pagesize)+1;
}
system.out.println("总记录："+icount+"；总页数："+allpage+"；当前页码："+pageno);
list<requirement> requilist=requirementservice.querybypage(hql, pageno, pagesize);
actioncontext.getcontext().put("requilist", requilist);//需求列表
actioncontext.getcontext().put("icount", icount);//总记录数
actioncontext.getcontext().put("allpage", allpage);//总页数
actioncontext.getcontext().put("currentpage", pageno); //当前页码
session.put("sessioncurrentpage", pageno);
return "requirecontent";
}
service
public long countallre() {
return requirementdao.countallre();
}
public list<t> querybypage(string hql, int pageno, int pagesize) {
return requirementdao.querybypage(hql, pageno, pagesize);
}
dao
//这里可能会报错，就是直接查询数据列表（使用了ssh）
public long countall() {
list<?> l = getsession().createquery("select count(*) from "
+ clazz.getsimplename()).list();
if (l != null && l.size() == 1 )
{
return (long)l.get(0);
}
return 0;
}
public list<t> querybypage(string hql, int pageno, int pagesize) {
return getsession()
.createquery(hql)
.setfirstresult((pageno - 1) * pagesize)
.setmaxresults(pagesize)
.list();
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。