var ids =new Array();

$.ajax({

    type: "POST",

    url: "/user/downReport",

    dataType: "html",

    traditional: true,

    data:{

        downReportArray:ids

    },

    async: true,

    success: function (data) {

        if(data.code==200){

            console.log("正在打包...")

        }

    }

});

    @RequestMapping(value = "/downReport", method = {RequestMethod.POST})

    @ResponseBody

    public Object downReport(@RequestParam(value = "downReportArray") Long[] downReportArray,HttpServletRequest request ) throws Exception {

     　　...

    }