How to send array from servlet and receive in HTML jquery?

I am parsing an uploaded XML file using dom, generating the string where hostname and osname is made into a string separated with a , delimiter. s is the variable with this string and I am sending it back to HTML using response.getWriter object obj. But instead of printing it e.g.: Windows,Abhishek I'd like to split it with the delimiter ,. Can someone show me example code of how I can receive this string in jQuery or JS and then split it into two strings?

try {
    out.println("Using Commons File Upload");
    List items = uploadHandler.parseRequest(request);
    Iterator itr = items.iterator();
    String str=null;
    while(itr.hasNext()) {
        FileItem item = (FileItem) itr.next();

        if(item.isFormField()) {

            /*out.println("Form Input Name = "+item.getFieldName()+", Form Input Value = "+item.getString());*/
        } else {
            /*out.println("Field Name = "+item.getFieldName()+
                ", File Name = "+item.getName()+
                ", Content type = "+item.getContentType()+
                ", File Size = "+item.getSize());   */              
            File fil开发者_JS百科e = new File(destinationDir,item.getName());

            item.write(file);

            str=item.getName();

            try {
                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                DocumentBuilder db = dbf.newDocumentBuilder();
                File xmlFile = new File(destinationDir,str);

                if (file.exists()) {
                    Document doc = db.parse(xmlFile);
                    Element docEle = doc.getDocumentElement();

                    NodeList csmList = docEle.getElementsByTagName("system");

                    if (csmList != null && csmList.getLength() > 0) {
                        for (int i = 0; i < csmList.getLength(); i++) {

                            Node node = csmList.item(i);

                            if (node.getNodeType() == Node.ELEMENT_NODE) {

                                Element e = (Element) node;
                                NodeList nodeList = e.getElementsByTagName("hostname");
                                s=nodeList.item(0).getChildNodes().item(0).getNodeValue();
                                //System.out.println("HOSTNAME: "+ nodeList.item(0).getChildNodes().item(0).getNodeValue());

                                nodeList = e.getElementsByTagName("osname");
                                s+=","+nodeList.item(0).getChildNodes().item(0).getNodeValue();
                                //System.out.println("OSNAME: " + nodeList.item(0).getChildNodes().item(0) .getNodeValue());
                            }
                        }
                        out.println(s);
                    }
                }
                else {
                    System.out.println("File Not Found");
                }

            }
            catch (Exception e) {
                System.out.println(e);
            }

        }

    }
    out.close();
    System.out.println(str);


}catch(FileUploadException ex) {
    log("Error encountered while parsing the request",ex);
} catch(Exception ex) {
    log("Error encountered while uploading file",ex);
}

Javascript part:

function postData() {
    $.post("/com/FileUploadServlet", { "file": "/com/FileUploadServlet" }, function(data) {
        alert(data); 
    });
}

$(document).ready(function() {
    postData();
});

The alert(data); prints "Using Commons File Upload" but in the servlet out.println(s); does not give me my data in the alert, instead it comes blank.

You state that you're sending a comma-delimited string to the browser, and you want to split it by comma in Javascript/JQuery. Is that a reasonable summary of your question? I found it quite hard to read, but I think that's what you're asking, so that's what I'll answer. :)

Javascript has a .split() method, which you can use on any string variable.

So where you receive the string in your Javascript code, you can simply do something like this:

var splitstring = inputstring.split(',');

Hope that helps. (though I do get the feeling there's more to the question than my interpretation)

For example, you can convert an array in java as JSON string, and then on the javascript side make an object from it like this:

var myObject = eval('(' + myJSONtext + ')');