如何在json结构本身中重新排列json对象?爪哇

时间:2019-05-01 09:17:58

标签: java arrays json

我正在尝试在JSON结构中重组重复的json值,并使用最简单的方法重新排列它们。

我到了每次循环遍历JSONObject时都设法将其存储在映射中的地步,但是从此处如何继续存储映射以实现所需的结果?提前非常感谢您。

public static void main(String[] args) throws JSONException  {

    String jsonString = "[{\"file\":[{\"fileRefNo\":\"AG/CSD/1\",\"status\":\"Active\"}],\"requestNo\":\"225V49\"},{\"file\":[{\"fileRefNo\":\"AG/CSD/1\",\"status\":\"Inactive\"}],\"requestNo\":\"225SRV\"},{\"file\":[{\"fileRefNo\":\"AG/CSD/2\",\"status\":\"Active\"}],\"requestNo\":\"225SRV\"}]" ;

      JSONArray json = new JSONArray(jsonString);

      Map<String, Object> retMap = new HashMap<String, Object>();

      for (int i = 0; i < json.length(); i++ ) {
        if(json != JSONObject.NULL) {
            retMap = toMap(json.getJSONObject(i));
            System.out.println(retMap + "retMap");
            //{file=[{fileRefNo=AG/CSD/1, status=Active}], requestNo=225V49}retMap
            //{file=[{fileRefNo=AG/CSD/1, status=Inactive}], requestNo=225SRV}retMap
            //{file=[{fileRefNo=AG/CSD/2, status=Active}], requestNo=225SRV}retMap
        }
      }
}
public static Map<String, Object> toMap(JSONObject object) throws JSONException {
    Map<String, Object> map = new HashMap<String, Object>();

    Iterator<String> keysItr = object.keys();
    while(keysItr.hasNext()) {
        String key = keysItr.next();
        Object value = object.get(key);

        if(value instanceof JSONArray) {
            value = toList((JSONArray) value);
        }
        else if(value instanceof JSONObject) {
            value = toMap((JSONObject) value);
        }
        map.put(key, value);
    }
    return map;
}

public static List<Object> toList(JSONArray array) throws JSONException {
    List<Object> list = new ArrayList<Object>();
    for(int i = 0; i < array.length(); i++) {
        Object value = array.get(i);

        if(value instanceof JSONArray) {
            value = toList((JSONArray) value);
        }
        else if(value instanceof JSONObject) {
            value = toMap((JSONObject) value);
        }
        list.add(value);
    }
    return list;
}

这是我最初的JSONArray

[{
    "file": [{
            "fileRefNo": "AG/CSD/1",
            "status": "Active"
        }],
    "requestNo": "225V49"
}, {
    "file": [{
            "fileRefNo": "AG/CSD/1",
            "status": "Inactive"
        }],
    "requestNo": "225SRV"
}, {
    "file": [{
            "fileRefNo": "AG/CSD/2",
            "status": "Active"
        }],
    "requestNo": "225SRV"
}]

这是我想要的结果

[{
    "file": [{
            "fileRefNo": "AG/CSD/1",
            "status": "Active"
        }],
    "requestNo": "225V49"
}, {
    "file": [{
            "fileRefNo": "AG/CSD/1",
            "status": "Inactive"
        },{
            "fileRefNo": "AG/CSD/2",
            "status": "Active"
        }],
    "requestNo": "225SRV"
}]

0 个答案:

没有答案