各种List 处理

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JFinal List 排序

        List<Kv> retList = new ArrayList<>();
        retList.add(Kv.by("score",1).set("name",1));
        retList.add(Kv.by("score",3).set("name",3));
        retList.add(Kv.by("score",2).set("name",12));
        retList.add(Kv.by("score",4).set("name",4));
        Collections.sort(retList, Comparator.comparingDouble(value -> value.getDouble("score")));
        System.out.println(JsonKit.toJson(retList));