One suggestion might be to attach a hidden dom element to a javascript variable, like a p, or hidden input.
Then, set the inner html to your json array
<p id="myJsonArray" style="display:none;"> <%= jsonArray %> </p>
Then finally, attach some event, to trigger a javascript function to read the inner html of that
... If you want it automatic, maybe a timed interval or something to check if that element changed.
I would honestly forget all of this though, and just write a web service (use jersey or something), and create an ajax call to get what you want :) But, that's my opinion.
Let me know if you want any further ideas!
Here's some working code. I would still like to emphasise that this is likely not the best approach. Having this much code mixed within a html page is very hard to maintain, and is not readable. I found this linked to on another StackOverflow post. It's worth a read. https://netbeans.org/kb/docs/javaee/ecommerce/design.html#architecture
The StackOverflow post: JSF vs Facelets vs JSP
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import="java.util.List,java.util.ArrayList,org.json.JSONArray,java.util.Arrays" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>test</title>
<!-- DataTables CSS -->
<link rel="stylesheet" type="text/css" href="//cdn.datatables.net/1.10.3/css/jquery.dataTables.css">
<!-- jQuery -->
<script type="text/javascript" charset="utf8" src="//code.jquery.com/jquery-1.10.2.min.js"></script>
<!-- DataTables -->
<script type="text/javascript" charset="utf8" src="//cdn.datatables.net/1.10.3/js/jquery.dataTables.js"></script>
<script>
$(function(){
//If your data won't change, you could just draw the table immediately after the page loads.
var testTable = $("#dynamicTable").DataTable({
data : JSON.parse($("#hiddenJson").html())
});
//If you're going to be updating data dynamically, you might
$("#refresh").click(function(){
var data = JSON.parse($("#hiddenJson").html());
testTable.clear();
var modifiedData;
for(r in data) {
modifiedData = data[r];
modifiedData[0] += " dynamically added";
modifiedData[1] += " dynamically added";
modifiedData[2] += " dynamically added";
testTable.row.add(modifiedData);
};
testTable.draw();
});
});
</script>
</head>
<body>
<%
JSONArray jsonArray = new JSONArray();
String location = request.getParameter("location");
// Class.forName(OracleDriver.class.getName().toString());
// Connection connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","ram","ram");
// PreparedStatement preparedStatement = connection.prepareStatement("select * from job where location = ?");
// preparedStatement.setString(1,location);
// ResultSet resultSet = preparedStatement.executeQuery();
//int index = 0;
//if(!resultSet.next()){
// jsonArray.add(0, new Job("NA","NA","NA","NA","NA"));
// out.println(jsonArray);
//}else{
// while(resultSet.next()){
// index ++;
// Job job = new Job(resultSet.getString("title"),resultSet.getString("location"),resultSet.getString("eligibility"),resultSet.getString("position"),resultSet.getString("pdate"));
// jsonArray.add(index, job);
// }
jsonArray.put(0, ("NA,NA,NA").split(","));
jsonArray.put(1, ("NA2,NA2,NA2").split(","));
jsonArray.put(2, ("NA3,NA3,NA3").split(","));
%>
<p id="hiddenJson" style="display:none;"> <%= jsonArray.toString() %> </p>
<table id="dynamicTable">
<thead>
<th>column 1</th>
<th>column 2</th>
<th>column 3</th>
</thead>
</table>
<button id="refresh"> Update Data </button>
</body>
</html>
jQuery.getJSON( )also set content type in jsp pageresponse.setContentType("application/json");