jquery ajax 传数组到后台 springmvc 接收

var idList=[ ];

idList.push("1");

idList.push("2");

$.ajax({

            url: "url",
            type: "POST",
            dataType: "json",
            traditional: true,
            data: {"ids" : idList},
            success: function(res) {
             
            },
            error: function(){
            
            }

        })

  spring mvc:

   @RequestMapping(value = "/batch", method = RequestMethod.POST)
    @ResponseBody
    public Map<String, Object> batch(@RequestParam(value = "ids", required = true) String[] ids) {

     }