js前端ajax提交list集合参数至后端

            var orderNosList = new Array();
            var rows = $("#dg_linkOrder").datagrid("getChecked");
            if(rows.length < 1){
                $('#error').dialog('open').dialog('center').dialog('setTitle', '错误提示');
                $('#error').text("请选择一条数据");
            }else  {
                for (var i = 0; i < rows.length; i++) {
                    orderNosList[i] = rows[i].orderNo;
                }
                
                var params = {
                        reserveOrderNoList:orderNosList
                     };
                                
                $.ajax({
                    url : api.LINK_ORDER_RESERVE_RETRY,
                    data : JSON.stringify(params),
                    type : 'POST',
                    contentType: "application/json",
                    dataType : 'json',
                    success : function(res) {
                        var str = '';
                        $(res.reserveFlowList).each(function(i, obj){
                            var responseCode = obj.responseCode;
                            var orderNo = obj.reserveFlow.orderNo;
                            if (responseCode == 0) {
                                str += "订单号为"+ orderNo +"成功<br/>";
                            } else {
                                str += "订单号为"+ orderNo + obj.responseMsg +"<br/>"
                            }
                        });
                        
                        $('#error2').dialog('open').dialog('center').dialog('setTitle', '提示');
                        $('#error2').html(str);
                        // 刷新列表
                        linkOrder.unfresh_LinkOrder();
                    }
                });
            }

JAVA后端

    @RequestMapping("/http/pss/reserveOrderRetry")
    @ResponseBody
    public Object reserveOrderRetry(@RequestParam("reserveOrderNoList")List<String> reserveOrderNoList) {
        return service.reserveOrderRetry(reserveOrderNoList);
    }

JS

var demo = new Object();
demo.name="1";
demo.id="2";
var demo2 = new Object();
demo2.name="1";
demo2.id="2";

var conditons = [];
conditons.push(demo);
conditons.push(demo2);

$(function(){
　　$.ajax({
　　　　type:'post',
　　　　url:'/http/pss/demo', 
        contentType: "application/json",
　　　　data:{name:"123",conditions:JSON.stringify(conditons)},
　　　　dataType : 'json', 
　　　　success:function(data){
　　　　　　console.log(data);
　　　　},
　　　　error: function (XMLHttpRequest, textStatus, errorThrown){
　　　　　　alert("error");
　　　　}
　　});
});

    @RequestMapping("/http/pss/reserveOrderRetry")
    @ResponseBody
    public Object reserveOrderRetry(@RequestParam("conditions")List<Demo> conditions,
                                    @RequestParam("name")String name) {
        
    }