分页技术原理与实现(三)——无刷新的Ajax分页技术

紧接着上篇—分页技术原理与实现 (二)——Java+Oracle实现,本篇继续分析分页技术。上篇讲的是分页技术的代码实现，这篇继续分析一下分页技术的效果控制。

上篇已经用代码简单的实现了一个分页。但是我们都看到，代码中每次通过servlet请求取得结果集后，都会转向到一个jsp页面显示结果，这样每次查询页面都会刷新一下，比如查询出现结果集后要查看第三页，页面就会刷新一下。这样页面给人的效果感觉就会有点不舒服，所以我们希望能够在通过条件查询结果集后无论访问哪一页，页面都不会刷新，而只是结果集变化。要解决这个，我想大家很容易就会想到Ajax了。

是啊，这就要请Ajax出山了。当通过查询条件查询到结果集后，以后每次访问任何一页都通过Ajax来访问，使用异步Ajax与Servlet进行交互，将结果查询出来返回给Ajax，这样页面内容因为Ajax返回结果而改变，而页面却不会刷新，这就实现了无刷新的分页技术。

下面我们来看一个简单的无刷新分页实现，代码如下：

[xhtml] view plain copy

<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml"xml:lang="en">
head>
Metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
linkrel="stylesheet"href="../lib/jquery_pagination/pagination.css"mce_href="lib/jquery_pagination/pagination.css"/>
mce:scripttype="text/javascript"src="../lib/jquery/jquery.min.js"mce_src="lib/jquery/jquery.min.js"></mce:scriptmce:scripttype="text/javascript"
src="../lib/jquery_pagination/jquery.pagination.js"mce:scripttype="text/javascript"><!--
/**
*Callbackfunctionthatdisplaysthecontent.
*
*Getscalledeverytimetheuserclicksonapaginationlink.
*
*@param{int}page_indexNewPageindex
*@param{jQuery}jqthecontainerwiththepaginationlinksasajQueryobject
*/
functionpageselectCallback(page_index,jq){
varnew_content=$('#hiddenresultdiv.result:eq('+page_index+')')
.clone();
$('#Searchresult').empty().append(new_content);
returnfalse;
}
functioninitPagination(){
varnum_entries=$('#hiddenresultdiv.result').length;
//Createpaginationelement
$("#Pagination").pagination(num_entries,{
num_edge_entries:2,
num_display_entries:8,
callback:pageselectCallback,
items_per_page:1
});
}
//WhentheHTMLhasloaded,callinitPaginationtopaginatetheelements
$(document).ready(function(){
initPagination();
});
//-->
mce:styletype="text/css"><!--
*{
padding:0;
margin:0;
}
body{
background-color:#fff;
margin:20px;
padding:0;
height:100%;
font-family:Arial,Helvetica,sans-serif;
}
#Searchresult{
margin-top:15px;
margin-bottom:15px;
border:solid1px#eef;
padding:5px;
background:#eef;
width:40%;
}
#Searchresultp{
margin-bottom:1.4em;
}
--mce:stylestyletype="text/css"mce_bogus="1">*{
padding:0;
margin:0;
}
body{
background-color:#fff;
margin:20px;
padding:0;
height:100%;
font-family:Arial,sans-serif;
}
#Searchresult{
margin-top:15px;
margin-bottom:15px;
border:solid1px#eef;
padding:5px;
background:#eef;
width:40%;
}
#Searchresultp{
margin-bottom:1.4em;
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>
divid="Pagination"class="pagination"divbrstyle="clear:both;"mce_style="clear:both;"divid="Searchresult">
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