用Java获取MailChimp响应

我想使用MailChimp api添加订阅服务器。首先,我想从其他的部分中得到一个消息,我试图从MailChimp api中得到一个响应。

以下是目前为止的代码:

public void doPostAction() throws IOException{

    // BASIC Authentication
    String name = "user";
    String password = apikey;
    String authString = name + ":" + password;

    byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
    String authStringEnc = new String(authEncBytes);

    URL urlConnector = new URL(url);
    HttpURLConnection httpConnection = (HttpURLConnection) urlConnector.openConnection();
    httpConnection.setRequestMethod("GET");
    httpConnection.setDoOutput(true);
    httpConnection.setDoInput(true);
    httpConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
    httpConnection.setRequestProperty("Accept", "application/json");
    httpConnection.setRequestProperty("Authorization", "Basic " + authStringEnc);

    InputStream is = httpConnection.getInputStream();

    // check status
    System.out.println("DoPost: status: " + httpConnection.getResponseCode());

    StringBuilder sb = new StringBuilder();
    BufferedReader br = new BufferedReader(new InputStreamReader(is, "utf-8"));

    String line = null;
    while ((line = br.readLine()) != null) {
        sb.append(line + "\n");
                }
    System.out.println("DoPost response: \n" + line);
    br.close(); 
}

我如何得到回应?

如果有人在看上面的代码,输出应该是:

System.out.println("DoPost response: \n" + sb);  // not line