map转Json、String转Map、Map的key转List、map的value转List、JSONArray转List、Json转Map

/**
     * HashMap转Json
     *
     * @param map 原map
     * @return string类型的json
     */
    public static String hashMapToJson(HashMap map) {
        String string = "{";
        for (Iterator it = map.entrySet().iterator(); it.hasNext(); ) {
            Map.Entry e = (Map.Entry) it.next();
            string += "\"" + e.getKey() + "\":";
            string += "\"" + e.getValue() + "\",";
        }
        string = string.substring(0, string.lastIndexOf(","));
        string += "}";
        return string;
    }

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public static String treeMapToJson(TreeMap map) {
        String string = "{";
        for (Iterator it = map.entrySet().iterator(); it.hasNext(); ) {
            Map.Entry e = (Map.Entry) it.next();
            string += "\"" + e.getKey() + "\":";
            string += "\"" + e.getValue() + "\",";
        }
        string = string.substring(0, string.lastIndexOf(","));
        string += "}";
        return string;
    }

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/**
     * String转成Map
     * Json 转成 Map<>
     *
     * @param jsonStr
     * @return
     */
    public static TreeMap<String, String> StringToMap(String jsonStr) {
        TreeMap map = new TreeMap();
        JSONObject jsonObject;
        try {
            jsonObject = new JSONObject(jsonStr);

            Iterator<String> keyIter = jsonObject.keys();
            String key;
            Object value;
//            Map<String, Object> valueMap = new HashMap<String, Object>();
            while (keyIter.hasNext()) {
                key = keyIter.next();
                value = jsonObject.get(key);
                map.put(key, value);
            }
        } catch (Exception e) {
            e.printStackTrace();
            Log_e("UtilsTools", "StringToMap --- ERROR --- " + e.getMessage());
        }
        return map;
    }

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/**
     * 把Map的key 转成 List
     *
     * @param map
     * @return
     */
    public static List<String> MapKeyToList(HashMap<String, String> map) {

        List<String> firstList = new ArrayList<>();

        HashMap<String, String> hashMap = map;
        Iterator i = hashMap.entrySet().iterator();
        while (i.hasNext()) {
            Entry<String, String> entry = (Entry) i.next();
            firstList.add(entry.getKey());
        }

        return firstList;
    }

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/**
     * JSONArray转换成List
     *
     * @param jsonArray
     * @return
     */
    public static List<String> JsonArrayToList(JSONArray jsonArray) {
        List<String> firstList = new ArrayList<>();

        for (int i = 0; i < jsonArray.length(); i++) {
            try {
                String s = jsonArray.get(i).toString();
                firstList.add(s);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        return firstList;
    }

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/**
     * 把Map的value 转成 List
     *
     * @param map
     * @return
     */
    public static List<String> MapValueToList(HashMap<String, String> map) {

        List<String> firstList = new ArrayList<>();

        HashMap<String, String> hashMap = map;
        Iterator i = hashMap.entrySet().iterator();
        while (i.hasNext()) {
            Entry<String, String> entry = (Entry) i.next();
            firstList.add(entry.getValue());
        }

        return firstList;
    }

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public static Map<String, String> JsonToMap(String data) {

        Map<String, String> map = new HashMap<String, String>();
        try {

            JSONObject j = new JSONObject(data);

            Iterator<String> it = j.keys();
            while (it.hasNext()) {
                String key = it.next().toString();
                String value = j.getString(key);
                map.put(key, value);
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }
        return map;
    }