InputStream转JSONObject

 

InputStream stream =xxx;
String responseString = readInputStream(stream);
JSONObject json = JSONObject.fromObject(responseString);
String userName= json.getString("userName");

 private String readInputStream(InputStream inputStream) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
        String tmp;
        StringBuilder sb = new StringBuilder();
        while ((tmp = reader.readLine()) != null) {
            sb.append(tmp).append("\n");
        }
        if (sb.length() > 0 && sb.charAt(sb.length() - 1) == '\n') {
            sb.setLength(sb.length() - 1);
        }
        reader.close();
        return sb.toString();
    }