利用XML的數據綁定和浏覽器的自動顯示功能可以實現一個無刷新的數據浏覽,即前後翻頁、頁碼定位的功能,本人實現時采用JSP+XML的方式。
具體的效果可以參看:http://guide.pconline.com.cn/comment/topic.JSP?id=10178
相關內容:
通過數據綁定,可以把一個XML文檔鏈接到一個HTML頁,然後綁定標准的HTML元素,例如SPAN、TABLE,到獨立的XML元素。Html元素會自動顯示所綁定的XML元素的內容。
使用數據綁定的兩個主要步驟:
1)鏈接XML文檔到想要顯示XML數據的Html頁。
有兩種方法:
(A)通過在HTML頁中包括名為XML的HTML元素來完成。例如:<XML ID="dsoBook" SRC="Book.xml"></XML>,Html頁中的某個元素(dsoBook)把XML文檔中Book.XML鏈接到該頁。
(B)使用數據島的方法。例如:
<Html><HEAD>
<TITLE></TITLE>
</HEAD>
<BODY><XML ID="dsoInventory">...</XML>
</BODY></Html>
2)綁定HTML元素到XML元素。當綁定一個HTML元素到一個XML元素時,HTML元素會自動顯示所綁定的XML元素的內容。例如:<SPAN DATASRC="#dsoBook" DATAFLD="AUTHOR"></SPAN>,結果,Html元素SPAN顯示元素AUTHOR的內容。
下面是一個XML數據綁定的例子:
<!-- File Name: Inventory Table.htm -->
<Html>
<HEAD>
<TITLE>Book Inventory</TITLE>
</HEAD>
<BODY>
<XML ID="dsoInventory" SRC="Inventory.xml"></XML>
<H2>Book Inventory</H2>
<TABLE DATASRC="#dsoInventory" BORDER="1" CELLPADDING="5">
<THEAD>
<TH>Title</TH>
<TH>Author</TH>
<TH>Binding</TH>
<TH>Pages</TH>
<TH>Price</TH>
</THEAD>
<TR ALIGN="center">
<TD><SPAN DATAFLD="TITLE"
STYLE="font-style:italic"></SPAN></TD>
<TD><SPAN DATAFLD="AUTHOR"></SPAN></TD>
<TD><SPAN DATAFLD="BINDING"></SPAN></TD>
<TD><SPAN DATAFLD="ID"></SPAN></TD>
<TD><SPAN DATAFLD="PRICE"></SPAN></TD>
</TR>
</TABLE>
</BODY>
/////////////////////////////////////////////////////
<?XML version="1.0"?>
<!-- File Name: Inventory.XML -->
<INVENTORY>
<BOOK>
<TITLE>The Adventures of Huckleberry Finn</TITLE>
<AUTHOR>Mark Twain</AUTHOR>
<BINDING>mass market paperback</BINDING>
<ID>298</ID>
<PRICE>$5.49</PRICE>
</BOOK>
<BOOK>
<TITLE>Leaves of Grass</TITLE>
<AUTHOR>Walt Whitman</AUTHOR>
<BINDING>hardcover</BINDING>
<ID>462</ID>
<PRICE>$7.75</PRICE>
</BOOK>
</INVENTORY>
////////////////////////////////////////////////////////////
利用XML數據綁定實現頁面無刷新的數據浏覽具體做法:
1)在XML.jsp中建立數據島。<XML id="dsoInventory" src="xmlsrc.JSp" ></XML>,其中XMLsrc.JSP文件是通過訪問數據庫後返回XML格式的數據,實現時應該包含求總記錄數據、每頁顯示條數、總頁數、分頁返回數據等方法。
返回的數據格式如:
<?XML version="1.0" encoding="GBK" ?>
<INVENTORY>
<onePageRows>5</onePageRows>
<totalRows>21</totalRows>
<totalPages>5</totalPages>
<intCurrentPage>1</intCurrentPage>
<BOOK>
<TITLE>The Adventures of Huckleberry Finn</TITLE>
<AUTHOR>Mark Twain</AUTHOR>
<BINDING>mass market paperback</BINDING>
<ID>298</ID>
<PRICE>$5.49</PRICE>
</BOOK>
<BOOK>
<TITLE>Leaves of Grass</TITLE>
<AUTHOR>Walt Whitman</AUTHOR>
<BINDING>hardcover</BINDING>
<ID>462</ID>
<PRICE>$7.75</PRICE>
</BOOK>
</INVENTORY>
使用時可以根據具體情況返回相應的XML數據。
2)在頁內綁定Html元素到XML元素,借助TABLE顯示。
<table id="cmmTbl" datasrc="dsoInventory" datafld="BOOk" width="760" border="0" cellspacing="1" cellpadding="2" align="center" bgcolor="#aaaaaa" style="border-collapse: collapse" bordercolor="#333333" >
<thead>
<tr bgcolor="#FFCC66">
<td HEIGHT="24" BGCOLOR="#f0f9ff" WIDTH="60" >
<div align="center"><b>查看</b></div>
</td>
<td HEIGHT="24" BGCOLOR="#f0f9ff" WIDTH="60" >
<div align="center"><b>作者</b></div>
</td>
<td width="580" BGCOLOR="#f0f9ff">
<div align="center"><b>標題</b></div>
</td>
<td width="60" BGCOLOR="#f0f9ff">
<div align="center"><b>價格</b></div>
</td>
</tr></thead>
<tbody>
<tr STYLE="background-color:expression(rowIndex%2==1?'#FFFFFF':'#f7f8f9')">
<td valign="top" WIDTH="60" align="center"><a datafld="ID" target="_blank"><IMG SRC="images/xq.gif" ALT="查看" border="0"></a></td>
<td valign="top" WIDTH="60"><span datafld="AUTHOR">作者</span></td>
<td valign="top" width="580" ><a datafld="ID" target="_blank"><span datafld="TITLE">標題</span></a></td>
<td valign="top" width="60" > <span datafld="PRICE">價格</span></td>
</tr></tbody>
</table>
3)增加分頁按鈕和分頁控制的JavaSCRIPT語句。
<form onsubmit="jump(this);return false;" method="post">
<div align="right">
每頁顯示
<input name=pageSize datasrc=#dsoInventory datafld=onePageRows size=2>條,
共<span datasrc=#dsoInventory datafld=totalPages></span>頁
<span datasrc=#dsoInventory datafld=totalRows ></span>條
<input type=submit style="width=0" >
<input name=firstPage type=submit value=首頁 onclick="pageNum.value=1">
<input name=previousPage type=submit value=上頁 onclick="pageNum.value=pageNum.value-1">
第<input name=pageNum datasrc=#dsoInventory datafld=intCurrentPage size=2>頁
<input name=nextPage type=submit value=下頁 onclick="pageNum.value=(pageNum.value-0)+1">
<input name=lastPage type=submit value=尾頁 onclick="pageNum.value=pageCount.value" >
<input name=pageCount type=hidden datasrc=#dsoInventory datafld=totalPages onpropertychange="pageCount_onpropertychange(form)">
</div> </form>
<script>
if(document.body == null) document.write(" ");
</script>
<script language="Javascript">
function jump(form)
{
articles.src="XMLsrc.JSP?onePageRows="+form.pageSize.value+"&page="+form.pageNum.value+"&time="+(new Date()).getTime();
/////alert("XMLsrc.JSP?page="+form.pageNum.value+"&onePageRows="+form.pageSize.value+"&time="+(new Date()).getTime());
///file://提交後返回新的XML數據。
}
function pageCount_onpropertychange(form)
{
if(form.pageNum.value==1)
{
form.firstPage.disabled=true;
form.previousPage.disabled=true;
}
else
{
form.firstPage.disabled=false;
form.previousPage.disabled=false;
}
if(form.pageNum.value==form.pageCount.value)
{
form.nextPage.disabled=true;
form.lastPage.disabled=true;
}
else
{
form.nextPage.disabled=false;
form.lastPage.disabled=false;
}
}
</script>
//////////////////////////////////////////////////////////////////
<!-- File Name: XML.JSP -->
<script>
if(document.body == null) document.write(" ");
</script>
<script language="Javascript">
function jump(form)
{
dsoInventory.src="XMLsrc.JSP?onePageRows="+form.pageSize.value+"&page="+form.pageNum.value+"&time="+(new Date()).getTime();
//alert("XMLsrc.JSP?page="+form.pageNum.value+"&onePageRows="+form.pageSize.value+"&time="+(new Date()).getTime());
//提交後返回新的XML數據。
}
function pageCount_onpropertychange(form)
{
if(form.pageNum.value==1)
{
form.firstPage.disabled=true;
form.previousPage.disabled=true;
}
else
{
form.firstPage.disabled=false;
form.previousPage.disabled=false;
}
if(form.pageNum.value==form.pageCount.value)
{
form.nextPage.disabled=true;
form.lastPage.disabled=true;
}
else
{
form.nextPage.disabled=false;
form.lastPage.disabled=false;
}
}
</script>
<Html>
<head>
<title>XML無刷新提交</title>
<meta http-equiv="Content-Type" content="text/Html; charset=gb2312">
<link rel="stylesheet" href="css/style.css" type="text/CSS">
</head>
<body bgcolor="303880" text="#000000" leftmargin="0" topmargin="0">
<XML id="dsoInventory" src="XMLsrc.JSP?page=1" ></XML>
<input type="button" value="aa" onclick="alert(dsoInventory.XML)">
<table id="cmmTbl" datasrc="dsoInventory" datafld="BOOk" width="760" border="0" cellspacing="1" cellpadding="2" align="center" bgcolor="#aaaaaa" style="border-collapse: collapse" bordercolor="#333333" >
<thead>
<tr bgcolor="#FFCC66">
<td HEIGHT="24" BGCOLOR="#f0f9ff" WIDTH="60" >
<div align="center"><b>查看</b></div>
</td>
<td HEIGHT="24" BGCOLOR="#f0f9ff" WIDTH="60" >
<div align="center"><b>作者</b></div>
</td>
<td width="580" BGCOLOR="#f0f9ff">
<div align="center"><b>標題</b></div>
</td>
<td width="60" BGCOLOR="#f0f9ff">
<div align="center"><b>價格</b></div>
</td>
</tr></thead>
<tbody>
<tr STYLE="background-color:expression(rowIndex%2==1?'#FFFFFF':'#f7f8f9')">
<td valign="top" WIDTH="60" align="center"><a datafld="ID" target="_blank"><IMG SRC="images/xq.gif" ALT="查看" border="0"></a></td>
<td valign="top" WIDTH="60"><span datafld="AUTHOR">作者</span></td>
<td valign="top" width="580" ><a datafld="ID" target="_blank"><span datafld="TITLE">標題</span></a></td>
<td valign="top" width="60" > <span datafld="PRICE">價格</span></td>
</tr></tbody>
</table>
<form onsubmit="jump(this);return false;" method="post">
<div align="right">
每頁顯示
<input name=pageSize datasrc=#dsoInventory datafld=onePageRows size=2>條,
共<span datasrc=#dsoInventory datafld=totalPages></span>頁
<span datasrc=#dsoInventory datafld=totalRows ></span>條
<input type=submit style="width=0" >
<input name=firstPage type=submit value=首頁 onclick="pageNum.value=1">
<input name=previousPage type=submit value=上頁 onclick="pageNum.value=pageNum.value-1">
第<input name=pageNum datasrc=#dsoInventory datafld=intCurrentPage size=2>頁
<input name=nextPage type=submit value=下頁 onclick="pageNum.value=(pageNum.value-0)+1">
<input name=lastPage type=submit value=尾頁 onclick="pageNum.value=pageCount.value" >
<input name=pageCount type=hidden datasrc=#dsoInventory datafld=totalPages onpropertychange="pageCount_onpropertychange(form)">
</div> </form>
</body>
</Html>
完成以上三步後,當用戶進行翻頁操作時將自動對表格內的數據進行重新的XML綁定,而不刷新頁面。