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I am trying to write an application which can upload files to Google Drive. I have chosen to interact with this service via raw http requests as I haven't found any useful examples of the API on Android and as it seems more lightweight then the provided libraries.

I've used https://developers.google.com/oauthplayground/ to get the various calls and responses and am trying to write a simple request to return the list of files. The request sent via the tool is:

POST /drive/v2/files HTTP/1.1
Host: www.googleapis.com
Content-length: 0
Content-type: application/json
Authorization: OAuth *token goes here*

I have tried to replicate this in eclipse using:

URL url = new URL("https://www.googleapis.com/drive/v2/files?v=3");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Host:", "www.googleapis.com");
conn.setRequestProperty("Content-length:", "0");
conn.setRequestProperty("Content-type:", "application/json");
conn.setRequestProperty("Authorization:", "OAuth " + token);

I have a valid token in my application and I have also tried to add the header conn.setRequestProperty("GData-Version:", "3.0") as specified in the Google documentation. I'm getting the response code 400, I'm sure there is something obvious wrong with my code but I haven't written header requests before and from the examples I've seen this looks correct.

Any help would be appreciated.

EDIT: Ok I have got further - I am now getting a 401 - with a message saying I need to login EDIT: I am now getting a "Received authentication challenge is null" response from the server.

   String token = fetchToken();
    if (token == null) {
      return;
    }
    URL url = new URL("https://www.googleapis.com/drive/v2/files");
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    try {
        conn.setRequestMethod("POST"); //use post method
        conn.setDoOutput(true); //we will send stuff
        conn.setDoInput(true); //we want feedback
        conn.setUseCaches(false); //no caches
        conn.setAllowUserInteraction(false);
        conn.setRequestProperty("HTTP-Version:", "HTTP/1.1");
        conn.setRequestProperty("Content-type: ", "application/json");
        conn.setRequestProperty("Authorization:","OAuth" + token);
      } 
      catch (ProtocolException e)
      {
          e.printStackTrace();
      }

    OutputStream out = conn.getOutputStream();
    try {
      OutputStreamWriter wr = new OutputStreamWriter(out);
      wr.write("{\"Method\":\"POST\",\"absoluteURI\"" +
                ":\"https://www.googleapis.com/drive/v2/files\"," +
                "\"headers\":{\"Content-Type\":\"application/json\"," +
                "\"Content-Length\":\"0\"},\"message-body\":\"\"," +
                "\"access_token\":\"" +
                token +
                "\"" +
                "," +
                "\"access_token_type\":\"oauth\"}"
      ); //ezm is my JSON object containing the api commands
      wr.flush();
      wr.close();
    }
    catch (IOException e) {
    }
    finally { //in this case, we are ensured to close the output stream
      if (out != null)
        out.close();
    }

    int sc = conn.getResponseCode();
    if (sc == 200) {
        Log.i(TAG, "200 OK..");
      InputStream is = conn.getInputStream();
      String name = getFileName(readResponse(is));
      System.out.println(readResponse(is));
      //mActivity.show("Hello " + name + "!");
      is.close();
      return;
    } else if (sc == 401) {
        GoogleAuthUtil.invalidateToken(mActivity, token);
        onError("Server auth error, please try again.", null);
        Log.i(TAG, "Server auth error: " + readResponse(conn.getErrorStream()));
        return;
    } else {
        System.out.println(sc);
      onError("Server returned the following error code: " + sc, null);
      return;
    }

My token should be valid as I can get the user information by accessing

"https://www.googleapis.com/oauth2/v1/userinfo?access_token=" + token

Any ideas?

EDIT: For anyone finding this looking for help I never got it to work, not entirely sure what the issue was but in the end I used the official api - a good working example can be found here Google drive SDK 2.0 throws error 400 Bad Request

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2 に答える 2

1

トークンがドライブスコープに対して有効であると確信していますか？質問の最後に言及したテストは、同じ範囲ではありません。

また、Oauht2トークンは1時間のみ有効であることを忘れないでください。別のトークンを要求するか、更新トークンがある場合はそれを使用する必要がある場合があります。

于 2012-10-26T13:33:04.400 に答える
0

HTTPS を使用する場合、POST の代わりに GET を使用し、ベアラー トークンが機能します。

カールを使用：

curl -H "Authorization: Bearer {TOKEN}" \
-H "Content-Type: application/json" \
https://www.googleapis.com/drive/v2/files

Google が REST API を文書化していない理由がわかりません。どこかでドキュメントを見つけた場合はコメントしてください。

于 2013-01-25T19:53:15.083 に答える