Google Drive SDK - Java sample not working

Question

I'm trying to get familiar with the Google Drive API using the official Java sample. However, after wasting a few hours and attempting to set the sample up two times, I'm still not able to use it as expected.

Instead of displaying a file's content it throws a 404 error in the FileServlet (/svc path). More specifically, service.files().get(fileId).execute(); seems to return null. I've tried it with different files, different MIME types, directly from Google Drive as well as using the Google File Picker.

I've followed the steps described over at https://developers.google.com/drive/examples/java as closely as possible.

Has anyone been able to get the sample running?

edit: Here's the log output of the FileServlet when requesting the URL /svc?file_id=0B08R9MrOE-ejZTY2M2I5MjAtYmVjZS00OTkyLWI4ZTEtOTg4OGM3YTIxMWEw (the 404 error is thrown at line 78):

2012-04-26 08:21:36.077
com.google.api.client.http.HttpRequest execute: -------------- REQUEST  --------------
GET https://www.googleapis.com/drive/v1/files/0B08R9MrOE-ejZTY2M2I5MjAtYmVjZS00OTkyLWI4ZTEtOTg4OGM3YTIxMWEw
Accept-Encoding: gzip
User-Agent: Google-HTTP-Java-Client/1.8.3-beta (gzip)

D 2012-04-26 08:21:36.263
com.google.api.client.http.HttpResponse <init>: -------------- RESPONSE --------------
403 OK
content-type: application/json; charset=UTF-8
content-encoding: gzip
date: Thu
date: 26 Apr 2012 06:21:36 GMT
expires: Thu
expires: 26 Apr 2012 06:21:36 GMT
cache-control: private
cache-control: max-age=0
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode=block
content-length: 188
server: GSE
x-google-cache-control: remote-fetch
via: HTTP/1.1 GWA

D 2012-04-26 08:21:36.265
com.google.api.client.http.HttpResponse getContent: Response size: 188 bytes
D 2012-04-26 08:21:36.271
com.google.api.client.http.HttpResponse getContent: {
 "error": {
  "errors": [
   {
    "domain": "usageLimits",
    "reason": "dailyLimitExceededUnreg",
    "message": "Daily Limit Exceeded. Please sign up",
    "extendedHelp": "https://code.google.com/apis/console"
   }
  ],
  "code": 403,
  "message": "Daily Limit Exceeded. Please sign up"
 }
}

This sounds a lot like "I don't know you" to me, so I have taken another look at my Client ID and Client Secret: I've noticed that there are two Client IDs and Client Secrets being displayed in the API Console, one "Client ID for web applications" and another "Client ID for Drive SDK". I've used the one for web applications previously, so I tried to switch to the one for the Drive SDK. Unfortunately, this doesn't change anything. Same error... :/

Answer 1

As per your logs it seems that your 404 error is caused by a 403 error returned on the request to the Drive API.

Errors from Google APIs usually contains an explanations in their body. In your case:

"error": {
  "errors": [
   {
    "domain": "usageLimits",
    "reason": "dailyLimitExceededUnreg",
    "message": "Daily Limit Exceeded. Please sign up",
    "extendedHelp": "https://code.google.com/apis/console"
   }
  ],
  "code": 403,
  "message": "Daily Limit Exceeded. Please sign up"
 }
}

This one would typically mean that you have not enabled access to the Google Drive API on your Google APIs Console project. In order to do this:

• Open your project in the Google APIs Console
• Go to the Services section
• Enable the Drive SDK and Drive API by clicking the On/Off toggle
• Don't forget to configure your app in the Drive SDK section and your OAuth settings in the **API Access" section

This is all described in the Get started > Register an App section of our documentation. You should also make sure that you go through the other sub-sections of Get started.