因为项目中之前的模块用的分页插件是Datatables，很方便，但是新做的模块表格中的布局有变化，Datatables插件满足不了了。为了风格的统一，同时也不希望查询参数再传递回显在页面上，所以就采用局部刷新分页的实现方案。
实现方案是这样的，将表格部分提取出来，用来作为页面局部刷新的部分，文件名为list-data.vm
<table class="table text-center table_acolor">
<thead>
<tr>
<th width="16%">userName</th>
<th width="24%">age</th>
</tr>
</thead>
<tbody>
#foreach($data in $!{page.list})
<tr>
<td width="16%">$!{data.userName}</td>
<td width="24%">$!{data.sex}</td>
</tr>
#end
</tbody>
</table>
#pageNation($!{page})
其中的pageNation是定义的一个宏（macro），用来做底部的分页条和分页条的显示逻辑。page对象是ajax请求返回的分页数据。每一次ajax请求，查询出分页数据，将数据放入list-data.vm所对应的视图的ModelAndView对象，然后返回ModelAndView对象，将这一部分追加到主页面表格所在的部分。
macro部分如下：
#macro(pageNation $data)
#if(!$data.list.size() or $data.list.size() == 0)
<div class="row DTTTFooter no-padding" style="height:40px; line-height:40px; text-align:center; font-size:14px;">
未查询到记录
</div>
#end
#if($data.list.size() and $data.list.size() > 0)
<div id="activityTable_info" class="dataTables_info" role="status" aria-live="polite">显示第 $!{data.startRow} 至 $!{data.endRow} 项结果，共 $!{data.total}项</div>
<div id="pagination" class="dataTables_paginate paging_full_numbers">
#set($prevPage = ${data.prePage})
#set($nextnPage = ${data.nextPage})
<a #if($data.pageNum ==1) class="paginate_button disabled" disabled="disabled" href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow"
#else class="paginate_button" pageNum="1" href="javascript:goPage(1)" rel="external nofollow"
#end style="margin-left: 2px;"
>首页</a>
<a #if($data.pageNum ==1) class="paginate_button disabled" disabled="disabled" href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow"
#else class="paginate_button" pageNum="$prevPage" href="javascript:goPage($prevPage)" rel="external nofollow"
#end style="margin-left: 2px;"
> 上页 </a>
#set($temp = ${data.pageNum} - 1)
#set($numbers = $!{pageUtil.numbers($temp, $data.pages)})
#foreach($foo in $numbers)
#if($foo == -999)
<span>…</span>
#else
<a class="paginate_button #if($foo==${data.pageNum}) current #end" pageNum="$foo" #if($foo!=${data.pageNum}) href="javascript:goPage($foo)" rel="external nofollow" #end style="margin-left: 2px;"
> $foo </a>
#end
#end
<a
#if($data.pageNum == $data.pages) class="paginate_button disabled" disabled="disabled"
#else class="paginate_button" pageNum="$nextnPage" href="javascript:goPage($nextnPage)" rel="external nofollow"
#end style="margin-left: 2px;"
> 下页
<a
#if($data.pageNum == $data.pages)
class="paginate_button disabled" disabled="disabled" href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow"
#else
class="paginate_button" pageNum="$data.pages" href="javascript:goPage($data.pages)" rel="external nofollow"
#end
>末页</a>
到第
<input id="changePage" class="margin text-center" type="text" maxpage="10" style="height:28px;line-height:28px;width:40px;">
页
<a id="dataTable-btn" class="btn btn-default shiny" href="javascript:jumpPage($data.pages);" rel="external nofollow" style="margin-bottom:5px">确认</a>
#end
</div>
<div p_sortinfo="$!{data.orderBy}" p_isFirst=$!{data.isFirst} p_isLast=$!{data.isLast} p_currentpagenum="$!{data.pageNum}" p_totalsize="$!{data.total}" p_endrow="$!{data.endRow}" p_totalpagesnum="$!{data.pages}" p_pagesize="$!{data.pageSize}" p_startrow="$!{data.startRow}" style="display:none" class="paginator"></div>
#end
pageUtil是写的velocity toolbox的一个工具类，用来仿Datatables分页条的分页页码显示的逻辑：
public class PageUtil {
public static LinkedList<Integer> range(Integer len,Integer start) {
LinkedList<Integer> out = new LinkedList<>();
Integer end;
if (start == null ) {
start = 0;
end = len;
}
else {
end = start;
start = len;
}
for (int i=start ; i<end ; i++ ) {
out.add(i);
}
return out;
}
public static List<Integer> numbers (Integer page,Integer pages) {
LinkedList<Integer> numbers = new LinkedList<>();
Integer buttons = 7;
Integer half = buttons / 2;
if (pages <= buttons ) {
numbers = range( 0, pages );
}
else if ( page <= half ) {
numbers = range( 0, buttons-2 );
numbers.add(-1000);
numbers.add( pages-1 );
}
else if ( page >= pages - 1 - half ) {
numbers = range( pages-(buttons-2), pages );
numbers.addFirst(-1000 ); //向头放
numbers.addFirst(0 );
}
else {
numbers = range( page-1, page+2 );
numbers.add( -1000 );
numbers.add( pages-1 );
numbers.addFirst(-1000 );
numbers.addFirst(0 );
}
List<Integer> res = new ArrayList<>();
for (Integer integer : numbers) {
res.add(integer+1);
}
return res;
}
}
而这段逻辑是从Datatables的js源码中找到的，我将其转化为java代码。Datatables源码的该部分代码如下
function _numbers ( page, pages ) {
var
numbers = [],
buttons = extPagination.numbers_length,
half = Math.floor( buttons / 2 ),
i = 1;
if ( pages <= buttons ) {
numbers = _range( 0, pages );
}
else if ( page <= half ) {
numbers = _range( 0, buttons-2 );
numbers.push( 'ellipsis' );
numbers.push( pages-1 );
}
else if ( page >= pages - 1 - half ) {
numbers = _range( pages-(buttons-2), pages );
numbers.splice( 0, 0, 'ellipsis' ); // no unshift in ie6
numbers.splice( 0, 0, 0 );
}
else {
numbers = _range( page-1, page+2 );
numbers.push( 'ellipsis' );
numbers.push( pages-1 );
numbers.splice( 0, 0, 'ellipsis' );
numbers.splice( 0, 0, 0 );
}
numbers.DT_el = 'span';
return numbers;
}
var _range = function ( len, start )
{
var out = [];
var end;
if ( start === undefined ) {
start = 0;
end = len;
}
else {
end = start;
start = len;
}
for ( var i=start ; i<end ; i++ ) {
out.push( i );
}
return out;
};
我将页面的ajax请求分页的数据做了封装：
/**
*
*/
//macro分页跳页调用方法，调用的页面需要提供goPage(redirectpage)方法
function jumpPage(totalPage) {
var redirectpage = $("#changePage").val();
if(redirectpage == ""){
$("#changePage").focus();
}else{
var rex = /^\d+$/;
if(!rex.test(redirectpage)){
alert("页码输入有误，只能输入不大于总页数的正整数");
}else{
var pageNo = parseInt(redirectpage);
if(pageNo <= 0 || pageNo > totalPage){
alert("页码输入有误，只能输入不大于总页数的正整数");
}else{
goPage(redirectpage)
}
}
}
}
$.fn.pagenation = function(options) {
//默认参数
var defaults={
url:"",
data:{},//参数
pageNo:1,//页码
pageSize:10,//页面大小
pageSuccess:{}//分页数据成功返回的回调函数
}
var _self = $(this);
options = $.extend(defaults,options);
var ajaxData = {
"pageNo":options.pageNo,
"pageSize":options.pageSize
};
this.fnDraw = function(pageNo) {
if (typeof (options.data) == 'function') {
ajaxData = options.data(ajaxData);
} else {
ajaxData = $.extend(ajaxData,options.data);
}
if (pageNo != undefined) {
ajaxData['pageNo'] = pageNo;
}
$.ajax({
url: options.url,
async: false,
type:"post",
data: ajaxData,
success: function(result,code,dd) {
_self.html(result);
if (typeof options.pageSuccess == 'function') {
options.pageSuccess();
}
},
error:function(){
alert("操作失败");
}
});
};
this.init = function() {
this.fnDraw(1);
return this;
}
return this;
}
在主页面调用：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
#set($ctx = ${request.getContextPath()})
<link rel="stylesheet" type="text/css" href="$ctx/assets/js/dataTables/jquery.dataTables.min.css" rel="external nofollow" />
<link rel="stylesheet" type="text/css" href="$ctx/assets/js/dataTables/css/jquery.dataTables_theme.css" rel="external nofollow" />
<script type="text/javascript" src="$ctx/assets/js/jquery-1.11.2.min.js"></script>
<script type="text/javascript" src="$ctx/assets/js/macro.pagination.js"></script>
</head>
<body>
<div class="dataTables_wrapper" id="pageDiv">
</div>
<script type="text/javascript">
var pagenation = $("#pageDiv").pagenation({
url:"${ctx}/listData.do",
pageSize:20,
data:function (data) {
$("#searchForm [name]").each(function(i, n){
data[$(n).attr('name')] = n.value;
});
return data;
},
pageSuccess:function(){
}
}).init();
function goPage(pageNo) {
pagenation.fnDraw(pageNo);
}
</script>
</body>
</html>
其中pageSuccess参数是用来在ajax返回数据成功后，需要做的一些操作。
这里说的也不太明白，附上码云的git地址：http://git.oschina.net/ivwpw/pagenation
其中并没有做从数据库插数据的部分，只是在Controller中模拟了页面需要的数据。
以上这篇springMVC+velocity实现仿Datatables局部刷新分页方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。
