AJAX 接受不到controller处理完的数据

发送AJAX Controller 处理完毕 数据传不到jsp页面

controller:
@RequestMapping(value="/produce/getSort")
    public ModelAndView getSort(String maName){
            
        ModelAndView view = new ModelAndView();
         
        ManufacturerFilter filter = new ManufacturerFilter();
         
        Pagination page = new Pagination();
         
        filter.setMaName(maName);
         
        QueryResult<ManufacturerVO> res =
                manufacturerService.queryManufacturer(filter, page);
         
        view.addObject("data",res.getData());
         
        return view;
    }
jsp

function getSort(obj) {
        var txt = obj.options[obj.options.selectedIndex].text;
        var url = path + "/goods/produce/getSort.html?ajax=true";
        var data = {"maName":txt};
        $.ajax({
            type : "POST",
            url : url + '?random=' + Math.random(),
            data : data,
            success : function ss(data) {
                alert('***'+data);
                $("sorts").empty();
                $.each(data, function(i, item) {
                    $("sorts").append(
                "<option value='"+item.sortId+"'>" + item.sortName
                                    + "</option>");
                });
            }
        });
    }