Java：合并两个JSONArray

    //合并两个JSONArray
    public static JSONArray joinJSONArray(JSONArray mData, JSONArray array) {
        StringBuffer buffer = new StringBuffer();
        try {
            int len = mData.length();
            for (int i = 0; i < len; i++) {
                JSONObject obj1 = (JSONObject) mData.get(i);
                if (i == len - 1)
                    buffer.append(obj1.toString());
                else
                    buffer.append(obj1.toString()).append(",");
            }
            len = array.length();
            if (len > 0)
                buffer.append(",");
            for (int i = 0; i < len; i++) {
                JSONObject obj1 = (JSONObject) array.get(i);
                if (i == len - 1)
                    buffer.append(obj1.toString());
                else
                    buffer.append(obj1.toString()).append(",");
            }
            buffer.insert(0, "[").append("]");
            return new JSONArray(buffer.toString());
        } catch (Exception e) {
        }
        return null;
    }