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Java实现分页的前台页面和后台代码

作者：dKnightL　　发布时间：2021-07-22 17:10:04　

标签：Java,分页

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>


<div class="well">

<div class="box"><h3><span class="glyphicon glyphicon-list" ></span>需求列表</h3></div>

<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>

<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>

<div id="rePagerDiv" class="rePagerDiv box">
<nav>
<ul class="pager">


<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>


<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>


<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>


<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();
}

投稿

Java实现分页的前台页面和后台代码

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