在网上查了一些资料后，精简改写后得出自己想用的形式，记录一下

    public static void putHashMapData(Context context, String key, Map<String, String> datas) {
        JSONArray mJsonArray = new JSONArray();
            Iterator<Map.Entry<String, String>> iterator = datas.entrySet().iterator();

            JSONObject object = new JSONObject();

            while (iterator.hasNext()) {
                Map.Entry<String, String> entry = iterator.next();
                try {
                    object.put(entry.getKey(), entry.getValue());
                } catch (JSONException e) {

                }
            }
            mJsonArray.put(object);

        SharedPreferences sp = context.getSharedPreferences("config",
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.putString(key, mJsonArray.toString());
        editor.commit();
    }

    public static Map<String, String> getHashMapData(Context context, String key) {

        Map<String, String> datas = new HashMap<>();
        SharedPreferences sp = context.getSharedPreferences("config",
                Context.MODE_PRIVATE);
        String result = sp.getString(key, "");
        try {
            JSONArray array = new JSONArray(result);
            for (int i = 0; i < array.length(); i++) {
                JSONObject itemObject = array.getJSONObject(i);
                JSONArray names = itemObject.names();
                if (names != null) {
                    for (int j = 0; j < names.length(); j++) {
                        String name = names.getString(j);
                        String value = itemObject.getString(name);
                        datas.put(name, value);
                    }
                }
            }
        } catch (JSONException e) {

        }

        return datas;
    }

～～喵印