AJAX, Thymeleaf Spring dynamic value change - ajax

Question

I'm stuck in the response of ajax spring controller response.
My thymeleaf template code as under:
<div id="categoryContent" class="row no-margin">
<div id="catTitle" class="col-md-12 no-padding">
<h2 th:text="${ctaModule.getCtaSubTitle()}"></h2>
<p class="starting-msrp">Starting at: <span id="price" th:text="${category.getPrice()}"></span></p>
</div>
<h3 class="roof-wheelbase col-xs-12" th:utext="${ctaModule.getCtaDesc()}"></h3>
</div>
<div class="row no-margin category-model-price">
Ajax call:
function get_vehicle_categories()
{
var catController = $('#catTitle h2').html().toLowerCase().replace(/\s+/g, '');
var heightInner = $('#height-inner').find('.active').find('.carousel-caption').html();
var lengthInner = $('#length-inner').find('.active').find('.carousel-caption').html();
$.ajax({
url: './' + catController + '/{height}/{length}',
type: "GET",
dataType: "json",
contentType: 'application/json',
data: {
height: heightInner,
length: lengthInner
},
success: function(response) {
console.log(response);
},
error: function(e) {
console.log(e.Message);
}
});
}
My controller:
#RequestMapping(value = SiteUrls.CATAGORY_PAGE + "/{height}/{length}", method = RequestMethod.GET,
produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
#ResponseBody
public String ajaxCategoryVan(#PathVariable("site") String site,
#RequestParam(required = false) String height, #RequestParam(required = false) String length,
Model model) {
AssemblerDTO data = new AssemblerDTO();
data.setSite(site);
if((height == null || height.equals("")) || (length == null || length.equals(""))) {
data.setBody("cargo");
data.setRoof("std");
data.setWheelbase("144");
data.setGvwr("8550");
data.setPowertrain("2500");
} else {
data.setBody("cargo");
if(height.equalsIgnoreCase("Standard Roof")) {
data.setRoof("std");
data.setGvwr("8550");
data.setPowertrain("2500");
} else if(height.equalsIgnoreCase("High Roof")) {
data.setRoof("high");
data.setGvwr("8550");
data.setPowertrain("2500");
} else if(height.equalsIgnoreCase("High Roof Extended")) {
data.setRoof("superhigh");
data.setGvwr("8550");
data.setPowertrain("2500");
}
if(length.equalsIgnoreCase("144 Wheelbase")) {
data.setWheelbase("144");
data.setGvwr("8550");
data.setPowertrain("2500");
} else if(length.equalsIgnoreCase("170 Wheelbase")) {
data.setWheelbase("170");
} else {
data.setWheelbase("170E");
}
}
setModel(data, model);
return "category";
}
I'm receiving parameters successfully.
I need to change the data as above thymeleaf template.
Kindly help me out.