Springboot：ajax向后台传送数据，后台无法接收

js代码：

	keys = serialKeys.split(",");
    jQuery.ajax({
        type: 'post',
        url: "/wms/common/validity/updateValidity?"+inforUrl,
        data : {
            'keys' : keys
        },
    });

controller：

	@RequestMapping(value = "updateValidity")
	@ResponseBody
	public String test(String str, String keys,Model model) throws ParseException {
		return "success";
	}

现在后台无法接收数据，js代码中插一句traditional: true，如下：

	keys = serialKeys.split(",");
    jQuery.ajax({
        type: 'post',
        traditional: true,
        url: "/wms/common/validity/updateValidity?"+inforUrl,
        data : {
            'keys' : keys
        },
    });

再来测试：

选中数据提交，后台显示：

传输成功