Problem with receiving data from jsp to servlet

I have problem with receive data from 开发者_运维知识库jsp to servlet. I know that I must serializes this data using JSON. In my jsp in JavaScript I make something like this:

var myJSONText = JSON.stringify(items);
document.getElementById('test').value = myJSONText;

where, items is an array of JavaScript objects, and test:

<input type="hidden" name="test" id="test">

Now I want to receive this array on the servlet, I'm trying that (in method doPost()):

request.getParameter("test");

but it contains an empty value. Has anyone idea how to do it?

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Can you show your code, when you do post request to server? Seems it should be something like

$.post('http:myurl.com', data)

or

<form ...>
<input type="submit">
</form>