ajax post to jsp receive null string - ajax

Question

I am fetching data from a form using jquery and posting with ajax to a .jsp file.
when i try to receive the data in jsp scriplet using request.get parameter then i get null.
var values = {}; // Create empty javascript object
$("select").each(function() { // Iterate over selects
values[$(this).attr('name')] = $(this).find(":selected").attr('data-citycode'); // Add each to features object
});
var format = "dd/mm/yyyy";
values["datepicker1"] = $("#datepicker1 div").datepicker("getFormattedDate", format);
values["datepicker2"] = $("#datepicker2 div").datepicker("getFormattedDate", format);
//var url ="list_flights.jsp";
$.ajax({
type: "GET",
url: "list_flights.jsp",
async: false,
data: {
values: JSON.stringify(values)
},
error: function(data) {
console.log(data);
},
success: function(data) {
console.log(data);
window.location = "list_flights.jsp";
}
});
and the jsp scriplet
<% out.print(request.getParameter("values")); %>
output
null

Answer 1

it seems that on success of ajax you are changing the window location
success: function(data) {
console.log(data);
window.location = "list_flights.jsp";
}
which is making another request and do not have the values attribute in request.
success: function(data) {
console.log(data);
window.location = "list_flights.jsp?values=" + JSON.stringify(values);
}
But it doesn't make sense of redirecting on success and calling the ajax to the same jsp. You should call a servlet from ajax which will give you the response and based on that response you should redirect to another page.