Google App Engine井字游戏Java示例OAUTH失败

Question

I am trying to learn to use Google App Engine and not having much luck.

Has anyone gotten the Tic Tac Toe example for Google App Engine(Java version) to work? I have been trying to get this example to work - developers.google.com/appengine/docs/java/endpoints/

This is the code for it -

`github.com/GoogleCloudPlatform/appengine-endpoints-tictactoe-java`

While I can get the app up and running , I can't get the OAUTH part it to work/authenticate .

The second ,lesser, problem is I am trying to use the web client part of it but it doesn't find the app from a browser unless run it via the api explorer. If I wrap it in - ../_ah/api/explorer , I can get it to make make an unauthorized call (getmove()) but any of the other methods do not work.

The functions that require oauth fail miserably.

I even have my google plus email listed in the permissions of the app . I'll even be logged in to Google Plus and the OAUTH fails.

I changed the client id where the readme file directed.

I get the following response.

401 Unauthorized

• Show headers -

  { "error": { "message": "com.google.appengine.api.oauth.OAuthRequestException: Invalid user.", "code": 401, "errors": [ { "domain": "global", "reason": "required", "message": "com.google.appengine.api.oauth.OAuthRequestException: Invalid user." } ] } }

This has taken way too long . Any help would be useful.

Thanks.

Answer 1

The reason the OAUTH2 fails is because you haven't filled out the Consent Screen options. Go to your cloud dashboard then "APIs & auth" -> "Consent screen". Fill out Product Name and EMail. It takes about a minute to go through. After that the OAUTH2 should work.

Reference: https://stackoverflow.com/a/18951654/1639019

Answer 2

Not sure if you are having the same problem I did, but there are two places where you have to change the clientid once you've generated a clientid using the developers console. One place is located inside the Constants or a variable passed into the java runtime server (development or deployment) the other is located in a file called base.js (in my hello endpoints example) located in the webapp/js folder. You must have everything configured through the developers console in order for the oauth2 redirects to work properly.

Hope this helps.