jqery datatables

index.html页面内容如下：
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="shortcut icon" type="image/ico" href="http://www.sprymedia.co.uk/media/images/favicon.ico" />

<title>DataTables example</title>
<style type="text/css" title="currentStyle">
@import "css/demo_page.css";
@import "css/demo_table.css";
</style>
<script type="text/javascript" language="javascript" src="js/jquery.js"></script>
<script type="text/javascript" language="javascript" src="js/jquery.js"></script>
<script type="text/javascript" language="javascript" src="js/jquery.dataTables.js"></script>
<script type="text/javascript" charset="utf-8">

$(document).ready(function() {
$('#example').dataTable( {
"bProcessing": true,
"bServerSide": true,
"sAjaxSource": "data.jsp"////////////////////////
} );
} );

</script>
</head>
<body id="dt_example">
<div id="container">
<table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<thead>
<tr>
<th width="20%">Rendering engine</th>
<th width="25%">Browser</th>
<th width="25%">Platform(s)</th>
<th width="15%">Engine version</th>
<th width="15%">CSS grade</th>
</tr>
</thead>
<tbody>
<tr>
<td colspan="5" class="dataTables_empty">Loading data from server</td>
</tr>
</tbody>
<tfoot>
<tr>
<th>Rendering engine</th>
<th>Browser</th>
<th>Platform(s)</th>
<th>Engine version</th>
<th>CSS grade</th>
</tr>
</tfoot>
</table>
</div>
</body>
</html>data.jsp页面内容如下：
   <%
   String data ="{";
  
   data+="\"sEcho\":"+request.getParameter("sEcho")+",\"iTotalRecords\":1,\"iTotalDisplayRecords\":1,";
   data+=" \"aaData\":[[\"1\",\"2\",\"3\",\"4\",\"5\"]] }";
   out.println(data);
  %>当调用index.html时，提示JSON formatter error错误!
是不是data.jsp 输出的格式不对？该怎样写？谢谢！