java - Convert json string to Map<String, List<Object>>, how to operate?-PHP Chinese Network Q&A

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java - Convert json string to Map<String, List<Object>>, how to operate?

巴扎黑 2017-07-05 10:02:17

1390

How to string json as follows:
{
"1":[{"id":6397891,"rate":81,"type":2,"unitId":1,"userId": 7133}, {"id":6397882,"rate":72,"type":1,"unitId":1,"userId":7133}],
"2":[{"id":6397906 ,"rate":90,"type":1,"unitId":2,"userId":7133}]
}
Convert to: Map<String, List<Unit>> Type
You can use jackson, fastjson, or jsoblib.
Please give me some advice!

巴扎黑

reply all(2)

过去多啦不再A梦2017-07-05 10:04:17 2 floor

public static Map jsonToMap(JSONObject json) throws JSONException {
    Map retMap = new HashMap();

    if(json != JSONObject.NULL) {
        retMap = toMap(json);
    }
    return retMap;
}

public static Map toMap(JSONObject object) throws JSONException {
    Map map = new HashMap();

    Iterator 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