/**
* Send a request to the UserInfo API to retrieve user e-mail address associated with the given
* credential.
*
* @param credential Credential to authorize the request.
* @return User's e-mail address.
* @throws NoUserIdException An error occurred, and the retrieved email address was null.
*/
private Userinfo getUserInfo(Credential credential) throws NoUserIdException {
Userinfo userInfo = null;
// Create a user info service, and make a request to get the user's info.
Oauth2 userInfoService = new Oauth2.Builder(TRANSPORT, JSON_FACTORY, credential).build();
try {
userInfo = userInfoService.userinfo().get().execute();
if (userInfo == null) {
throw new NoUserIdException();
}
} catch (IOException e) {
e.printStackTrace();
}
return userInfo;
}
protected Userinfo getUserInfo(Credential credentials) throws NoSuchUserIdException {
Oauth2.Builder builder =
new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credentials);
Oauth2 oauth2 = builder.build();
Userinfo userInfo = null;
try {
userInfo = oauth2.userinfo().get().execute();
} catch (IOException e) {
System.err.println("An error occurred: " + e);
}
if ((userInfo != null) && (userInfo.getId() != null)) {
return userInfo;
} else {
throw new NoSuchUserIdException();
}
}