Google Glass GDK authentication using Java - authentication

Question

I was testing the authentication for my GDK Glassware :
This is my code:
===================================================================================
import java.io.IOException;
import java.net.URISyntaxException;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.List;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.Lists;
import com.google.api.services.mirror.Mirror;
import com.google.api.services.mirror.model.Account;
import com.google.api.services.mirror.model.AuthToken;
public class InsertAccountWithJava {
/** Email of the Service Account */
private static final String SERVICE_ACCOUNT_EMAIL =
"540223414844-tj91ijj3u9**********#developer.gserviceaccount.com ";
/** Path to the Service Account's Private Key file */
private static final String SERVICE_ACCOUNT_PKCS12_FILE_PATH =
"C:/Users/Yuan/Desktop/eyenotes-847a787fecec.p12";
/** The account type, usually based on your company or app's package. */
private static final String ACCOUNT_TYPE = "com.myapplication";
/** The Mirror API scopes needed to access the API. */
private static final List<String> MIRROR_ACCOUNT_SCOPES =Arrays.asList(
"https://www.googleapis.com/auth/glass.thirdpartyauth");
public static void main(String[] args) {
try {
Mirror mirror = getMirrorService();
createAccount(mirror, "6164da1******", "zhongmeiCM", "com.myapplication", "747dab3e60dd8cd45595767580040538c8a29fcf");
} catch (GeneralSecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
}
}
/**
* Build and returns a Mirror service object authorized with the service accounts.
*
* #return Mirror service object that is ready to make requests.
*/
public static Mirror getMirrorService() throws GeneralSecurityException, IOException, URISyntaxException {
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
GoogleCredential credential = new GoogleCredential.Builder()
.setTransport(httpTransport)
.setJsonFactory(jsonFactory)
.setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
.setServiceAccountScopes(MIRROR_ACCOUNT_SCOPES)
.setServiceAccountPrivateKeyFromP12File(
new java.io.File(SERVICE_ACCOUNT_PKCS12_FILE_PATH))
.build();
Mirror service = new Mirror.Builder(httpTransport, jsonFactory, null)
.setHttpRequestInitializer(credential).build();
return service;
}
/**
* Creates an account and causes it to be synched up with the user's Glass.
* This example only supports one auth token; modify it if you need to add
* more than one, or to add features or user data or the password field.
*
* #param mirror the service returned by getMirrorService()
* #param userToken the user token sent to your auth callback URL
* #param accountName the account name for this particular user
* #param authTokenType the type of the auth token (chosen by you)
* #param authToken the auth token
*/
public static void createAccount(Mirror mirror, String userToken, String accountName,
String authTokenType, String authToken) {
try {
Account account = new Account();
List<AuthToken> authTokens = Lists.newArrayList();
AuthToken authToken1 = new AuthToken().setType(authTokenType).setAuthToken(authToken);
authTokens.add(authToken1);
account.setAuthTokens(authTokens);
account.setPassword("123456");
mirror.accounts().insert(
userToken, ACCOUNT_TYPE, accountName, account).execute();
} catch (IOException e) {
e.printStackTrace();
}
}
}
=====================================================================================
But I get an exception:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request
{
"code" : 400,
"errors" : [ {
"domain" : "global",
"message" : "Invalid Value",
"reason" : "invalid"
}, {
"domain" : "global",
"message" : "Invalid Value",
"reason" : "invalid"
} ],
"message" : "Invalid Value"
}
at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:145)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:312)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1049)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
at TestInsert.createAccount(TestInsert.java:92)
at TestInsert.main(TestInsert.java:39)
Question 1.please tell me how to generate the parameter:authToken,and what's the difference between authToken and accessToken ?
Question 2.what's the problem with my test code ? When can i get the Exception above.

Answer 1

authToken is an arbitrary String that you can define yourself. accessToken, on the other hand, is a token given to you during the authentication process. It is passed to the Google Mirror API to give your application access to user data.
Refer to the selected answer to this post.