springMVC中ajax的实现

function addDebtResult(){
    var repayIds=$("#repayIds").val();
    var lateFeeDay=$("#repayIds1").val();
    var subAdminId1=$("#subAdminId1").val();
     if(subAdminId1==null||subAdminId1==""){
         alert("未选择催收人员！");
         return;
     }

      $('#bt_flash').attr('data-dismiss', 'modal');

     $.ajax({
        type: "post",
        timeout: ,
        async: false,
           cache: false,
        data:{
           "repayIds":repayIds,
           "lateFeeDay":lateFeeDay,
           "subAdminId":subAdminId1,
         },
        url: "${ctx}/postLoanManageController/addTaskAllocat",
        success: function(data){
        if(data==){

            location.reload();
            alert("添加成功！");

        }else if(data==){
            alert("请登录！");
            window.location.href="${ctx}/admin";
        }else{
            alert("添加失败");
        }

        }

    });
    }

//催收管理：任务分配-添加分配记录
        @ResponseBody
        @RequestMapping(value="/addTaskAllocat",produces="application/json;charset=UTF-8")
        public int addTaskAllocat(String repayIds,String lateFeeDay, String subAdminId,HttpServletRequest request){
            logBefore(logger,"催收管理：任务分配-添加分配记录");
            Admin admin=getCurrentAdmin(request);
            if(admin==null){
                return ;
            }
            int flag = postLoanManageService.addTaskAllocat( repayIds, lateFeeDay, subAdminId,admin);
            logAfter(logger);
            return flag;
        }

List<Province> province= loginService.getProvinceByAreaId(areaId);

返回List对象：JSONArray provinceJson=JSONArray.fromObject(province);

返回对象：    JSONObject userJson=JSONObject.fromObject(resultInfo);