商品SKU排列组合

由于新接了一个商城系统，里面商品多规格设价的问题，需要把所有规格排列组合起来生成一个json供前端展示价格。
废话不多说贴上JAVA代码

  public static JSONArray sku(List<Map<String,Object>> dataList,int size){
        JSONArray jsonArray = new JSONArray();
        sku2(jsonArray,dataList,new JSONObject(),size);
        return jsonArray;
    }

    private static JSONObject sku2(JSONArray jsonArray,List<Map<String,Object>> dataList,JSONObject object,int size){
        String skuName = "";//定义本次循环要循环的规格
        for (Map<String,Object> data :dataList){
            JSONObject newObject = JSONObject.parseObject(object.toJSONString());

            if (newObject.get(data.get("skuName").toString())==null) {

                if ("".equals(skuName)) {
                    newObject.put(data.get("skuName").toString(), data.get("skuValue"));
                    skuName = data.get("skuName").toString();//确定本次循环的规格 其余的跳过  如  宽度 1
                }else {
                    if (!skuName.equals(data.get("skuName").toString())){
                        continue;
                    }
                    //覆盖本次规格 将宽度1  覆盖为宽度 2
                    newObject.put(data.get("skuName").toString(), data.get("skuValue"));
                }
                if (newObject.size()<size)// 未达到所要的规格数量  进入递归
                    sku2(jsonArray,dataList,newObject,size);
                else{// 已达到 加入数组
                    newObject.put("price",0);
                    jsonArray.add(newObject);
                }
            }
        }
        return object;
    }


    public static void main(String[] args) {
        List<Map<String,Object>> dataList = new ArrayList<>();
        
        Map<String,Object> data = new HashMap<>();
        data.put("skuName","长度");
        data.put("skuValue",1);
        dataList.add(data);
        Map<String,Object> data1 = new HashMap<>();
        data1.put("skuName","长度");
        data1.put("skuValue",2);
        dataList.add(data1);
        Map<String,Object> data2 = new HashMap<>();
        data2.put("skuName","高度");
        data2.put("skuValue","3M");
        dataList.add(data2);
        
        JSONArray array = sku(dataList,2);
        System.out.println(array.size());
        System.out.println(array.toJSONString());

    }