AjaxServlets

Question

I have a problem with the usage ajax on the page.
This is a class overwrites method doPost.
public class TemplateAjaxServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
request.setCharacterEncoding("UTF-8");
String name = request.getParameter("name");
String load = request.getParameter("load");
response.setContentType("text/xml");
response.setCharacterEncoding("UTF-8");
response.setHeader("Cache-Control", "no-cache");
String answer = "<save>";
if ("true".equals(load)) {
answer += "true</save>";
response.getWriter().write(answer);
response.setStatus(200);
return;
} else {
answer += "false</save>";
response.getWriter().write(answer);
response.setStatus(200);
This is javascript.
function fill() {
var name = document.getElementById("FORM:TEMPLATE_NAME").value;
var load = document.getElementById("FORM:SAVE_TEMPLATE").checked;
var req = initRequest();
req.onreadystatechange = function() {
if (req.readyState == 4) { /* Request processing complete */
if (req.status == 200) { /* http: success */
var url = contextPath + "/templateAjaxServlet";
req.open("POST", url, true);
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
var params = 'name=' + name + "&load=" + load;
req.send(params);
This js returns error on line 7 - Error: [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIXMLHttpRequest.status]" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: https://localhost/***.jsf :: anonymous :: line 471" data: no]
It means that req.status have not been initialized.
What I have to do to repair this error?

Answer 1

use code tags when posting code