jsonobject取出并进行if判断，并将结果放入map

rank这个字段有1-5五个数，我现在需要将其取出，然后放入for循环进行if判断，统计其中1出现了几次，2有几次，3总共有多少次，然后将结果放入map集合中，1为一级，2为二级这样。

{
        "code": 200,
        "data":{
        "records":[
        {
        "id":917834041955188736,
        "alertTime":"2021-12-07 17:44:48",
        "messageType":3,
        "snapId":101124,
         "rank":"1",
        "alertText":"低电压穿越保护",
        },
        {
        "id":917834020232888320,
        "alertTime":"2021-12-07 17:44:42",
        "messageType":1,
        "snapId":101124,
        "rank":"3",
        "alertText":"低电压穿越保护",
        },
        {
        "id":917833742737735680,
        "alertTime":"2021-12-07 17:43:36",
        "messageType":3,
        "snapId":101124,
        "rank":"2",
        "alertText":"低电压穿越保护",
        },
        {
        "id":917833717546745856,
        "alertTime":"2021-12-07 17:43:30",
        "messageType":1,
        "snapId":101124,
        "rank":"3",
        "alertText":"低电压穿越保护",
        }
        ]
     }
}

    JSONArray recordList = data.getJSONArray("records");

        int a = 1;
        int b = 2;
        int c = 3;
        int d = 4;
        int e = 5;
        
        for (int i = 0; i < recordList.size(); i++) {

            JSONObject record = recordList.getJSONObject(i);
            String ranks = record.getString("rank");

            if (StringUtils.isEmpty(ranks))
                continue;
            if (ranks.equals("1")){
                a += record.getInteger("a");
            }else if (ranks.equals("2")){
                b += record.getInteger("b");
            }else if (ranks.equals("3"));{
                c += record.getInteger("c");
            }

        }

        JSONObject maps = new JSONObject();
        maps.put("一级",a);
        maps.put("二级",b);
        maps.put("三级",c);
        maps.put("四级",d);
        maps.put("五级",e);

现在出现啥问题?

你的最后定义的maps是JSONObject 不是HashMap啊