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GoogleAuthException 401 Unauthorized

I am trying to run google drive api starter code in my local and it is working fine when it is using com.google.api.client.auth.oauth2.Credential and results in 401 when it is using
com.google.auth.oauth2.GoogleCredentials.
I am a newbie, sorry if this is a stupid question. Please help me, I am trying to upload a file to my drive, it is working with a service account, but the upload is happening to the service account and I don't know how to access the service account files.
Here is the starter code I am using:
package com.google.drive.api.try;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import com.google.drive.api.try.write.UploadBasic;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.GeneralSecurityException;
import java.util.List;
public class DriveQuickstart {
private static final String APPLICATION_NAME = "Google Drive API Java Quickstart";
private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();
private static final String TOKENS_DIRECTORY_PATH = "tokens";
private static final String CREDENTIALS_FILE_PATH = "/credentials.json";
private static Drive service;
public static void main(String... args) throws IOException {
init();
UploadBasic.uploadBasic();
FileList result = service.files().list().setPageSize(10).setFields("nextPageToken, files(id, name)").execute();
List<File> files = result.getFiles();
if (files == null || files.isEmpty()) {
System.out.println("No files found.");
} else {
System.out.println("Files:");
for (File file : files) {
System.out.printf("%s (%s)\n", file.getName(), file.getId());
}
}
}
private static void init() {
try {
final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
.setApplicationName(APPLICATION_NAME).build();
} catch (Exception e) {
e.printStackTrace();
}
}
private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
InputStream in = DriveQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
if (in == null) {
throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH);
}
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
clientSecrets, DriveScopes.all())
.setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
.setAccessType("offline").build();
LocalServerReceiver receiver = new LocalServerReceiver.Builder().setPort(8888).build();
Credential credential = new AuthorizationCodeInstalledApp(flow, receiver).authorize("user");
return credential;
}
}
UploadBasic.java
package com.google.drive.api.try.write;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.util.Arrays;
public class UploadBasic {
public static String uploadBasic() throws IOException {
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault()
.createScoped(Arrays.asList(DriveScopes.DRIVE_FILE));
HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(credentials);
// Build a new authorized API client service.
Drive service = new Drive.Builder(new NetHttpTransport(), GsonFactory.getDefaultInstance(), requestInitializer)
.setApplicationName("Drive samples").build();
// Upload file photo.jpg on drive.
File fileMetadata = new File();
fileMetadata.setName("photo.jpg");
// File's content.
java.io.File filePath = new java.io.File("files/photo.jpg");
// Specify media type and file-path for file.
FileContent mediaContent = new FileContent("image/jpeg", filePath);
try {
File file = service.files().create(fileMetadata, mediaContent).setFields("id").execute();
System.out.println("File ID: " + file.getId());
return file.getId();
} catch (GoogleJsonResponseException e) {
// TODO(developer) - handle error appropriately
System.err.println("Unable to upload file: " + e.getDetails());
throw e;
}
}
}

java.lang.NoSuchMethodError: com.google.api.client.http.javanet.NetHttpTransport.<init>(Lcom/google/api/client/http/javanet/ConnectionFactory;

Good morning. My program wants to communicate with my google drive account. So I took example to see how I can do it. But I have the same error still now. Please help me.
The problem is on this line :
NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
When I'm execute I have this error:
com.google.api.client.http.javanet.NetHttpTransport.(Lcom/google/api/client/http/javanet/ConnectionFactory;Ljavax/net/ssl/SSLSocketFactory;Ljavax/net/ssl/HostnameVerifier;)
My source code:
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.GeneralSecurityException;
import java.util.Collections;
import java.util.List;
public class DriveQuickstart {
static final String oz = org.apache.http.conn.ssl .SSLConnectionSocketFactory.class.getProtectionDomain (). getCodeSource(). getLocation (). getPath ();
private static final String APPLICATION_NAME = "DriveQuickstart";
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
// Directory to store user credentials for this application.
private static final java.io.File CREDENTIALS_FOLDER //
= new java.io.File(System.getProperty("user.home"), "credentials");
private static final String CLIENT_SECRET_FILE_NAME = "client_secret.json";
//
// Global instance of the scopes required by this quickstart. If modifying these
// scopes, delete your previously saved credentials/ folder.
//
private static final List<String> SCOPES = Collections.singletonList(DriveScopes.DRIVE);
private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
java.io.File clientSecretFilePath = new java.io.File(CREDENTIALS_FOLDER, CLIENT_SECRET_FILE_NAME);
if (!clientSecretFilePath.exists()) {
throw new FileNotFoundException("Please copy " + CLIENT_SECRET_FILE_NAME //
+ " to folder: " + CREDENTIALS_FOLDER.getAbsolutePath());
}
// Load client secrets.
InputStream in = new FileInputStream(clientSecretFilePath);
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
// Build flow and trigger user authorization request.
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
clientSecrets, SCOPES).setDataStoreFactory(new FileDataStoreFactory(CREDENTIALS_FOLDER))
.setAccessType("offline").build();
return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
}
public static void main(String... args) throws IOException, GeneralSecurityException {
System.out.println("voici le path "+oz);
System.out.println("CREDENTIALS_FOLDER: " + CREDENTIALS_FOLDER.getAbsolutePath());
// 1: Create CREDENTIALS_FOLDER
if (!CREDENTIALS_FOLDER.exists()) {
CREDENTIALS_FOLDER.mkdirs();
System.out.println("Created Folder: " + CREDENTIALS_FOLDER.getAbsolutePath());
System.out.println("Copy file " + CLIENT_SECRET_FILE_NAME + " into folder above.. and rerun this class!!");
return;
}
// 2: Build a new authorized API client service.
NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
// 3: Read client_secret.json file & create Credential object.
Credential credential = getCredentials(HTTP_TRANSPORT);
// 5: Create Google Drive Service.
Drive service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential) //
.setApplicationName(APPLICATION_NAME).build();
// Print the names and IDs for up to 10 files.
FileList result = service.files().list().setPageSize(10).setFields("nextPageToken, files(id, name)").execute();
List<File> files = result.getFiles();
if (files == null || files.isEmpty()) {
System.out.println("No files found.");
} else {
System.out.println("Files:");
for (File file : files) {
System.out.printf("%s (%s)\n", file.getName(), file.getId());
}
}
}
}

This is a jar dependency issue. Update your question with a screenshot of libs folder.
In order to work this please add the below jars in lib if not exists already
google-oauth-client-1.30.5.jar
google-oauth-client-java6-1.30.6.jar
google-oauth-client-jetty-1.30.6.jar
google-api-client-1.30.9.jar
google-http-client-1.34.0.jar
google-http-client-jackson2-1.34.2.jar
google-api-services-drive-v3-rev195-1.25.0.jar
httpclient-4.5.12.jar
Also, add the below lines of code just above where the exception is occurring to see from which jar they are referenced in
System.out.println(NetHttpTransport.class.getProtectionDomain().getCodeSource().getLocation().getPath());
System.out.println(GoogleNetHttpTransport.class.getProtectionDomain().getCodeSource().getLocation().getPath());
NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();

use your class package while calling the class
HttpTransport httpTransport = new com.google.api.client.http.javanet.NetHttpTransport();
I hope it will work

Webmaster Tools Api, get more then 1000 crawling errors

Im using the new webmaster tools api to get all my site's crawling errors (+ details). Unfort. it only gives me 1000 but i have like 10000. Is there a way to get all of them ?
This is the code i use:
package main;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.webmasters.Webmasters;
import com.google.api.services.webmasters.Webmasters.Urlcrawlerrorssamples;
import com.google.api.services.webmasters.model.SitesListResponse;
import com.google.api.services.webmasters.model.UrlCrawlErrorsSample;
import com.google.api.services.webmasters.model.UrlCrawlErrorsSamplesListResponse;
import com.google.api.services.webmasters.model.WmxSite;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
public class WebmastersCommandLine {
private static String CLIENT_ID = "...";
private static String CLIENT_SECRET = "...";
private static String REDIRECT_URI = "urn:ietf:wg:oauth:2.0:oob";
private static String OAUTH_SCOPE = "https://www.googleapis.com/auth/webmasters.readonly";
private static String PAGE_URL = "...";
public static void main(String[] args) throws IOException {
HttpTransport httpTransport = new NetHttpTransport();
JsonFactory jsonFactory = new JacksonFactory();
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
httpTransport, jsonFactory, CLIENT_ID, CLIENT_SECRET, Arrays.asList(OAUTH_SCOPE))
.setAccessType("online")
.setApprovalPrompt("auto").build();
String url = flow.newAuthorizationUrl().setRedirectUri(REDIRECT_URI).build();
System.out.println("open URL:");
System.out.println(" " + url);
System.out.println("code:");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String code = br.readLine();
GoogleTokenResponse response = flow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();
GoogleCredential credential = new GoogleCredential().setFromTokenResponse(response);
// Create a new authorized API client
Webmasters service = new Webmasters.Builder(httpTransport, jsonFactory, credential)
.setApplicationName("WebmastersCommandLine")
.build();
Webmasters.Urlcrawlerrorssamples.List req2 = service.urlcrawlerrorssamples().list(PAGE_URL, "notFound", "web");
try
{
UrlCrawlErrorsSamplesListResponse urlList = req2.execute();
System.out.println("start");
for(UrlCrawlErrorsSample sample : urlList.getUrlCrawlErrorSample())
{
Webmasters.Urlcrawlerrorssamples.Get req3 = service.urlcrawlerrorssamples().get(PAGE_URL, sample.getPageUrl(), "notFound", "web");
UrlCrawlErrorsSample details = req3.execute();
System.out.println(sample.getPageUrl() + "," + details.getUrlDetails().getLinkedFromUrls());
}
}
catch(IOException e)
{
System.out.println("An error occurred: " + e);
}
System.out.println("done");
}
}
This however only gives me a list of 1000 errors, but i need all 10000 of them. Does anybody know a way to do that ?

The Webmaster Tools API URL Crawl Errors Sample method returns a sample of 1000 crawl errors. It's not meant to return a complete list (you could compile that from your server logs). If you want more samples through the API, one thing you can do is to mark these errors as fixed and check back in a day. It will then generate a set of samples from the remaining crawl errors.
The order of the samples is the same as in the UI, so the more important ones will be the first ones you see. This means that there are diminishing returns as you move on, with later crawl errors being either similar to the previous ones, or at least seen as being less critical. The original blog post has more on the prioritization:
We determine this based on a multitude of factors, including whether
or not you included the URL in a Sitemap, how many places it’s linked
from (and if any of those are also on your site), and whether the URL
has gotten any traffic recently from search.

GmailApiQuickstart -

I am embarrassed that I'm simply failing with an example piece of code, but I'll blame it on the fact that it is late...
I have taken a copy and paste of: https://developers.google.com/gmail/api/quickstart/quickstart-java
and downloaded the client libraries: https://code.google.com/p/google-api-java-client/
and https://developers.google.com/api-client-library/java/apis/gmail/v1
When I run the sample, I get the following exception:
Exception in thread "main" java.lang.IllegalArgumentException
at com.google.api.client.repackaged.com.google.common.base.Preconditions.checkArgument(Preconditions.java:76)
at com.google.api.client.util.Preconditions.checkArgument(Preconditions.java:37)
at com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.getDetails(GoogleClientSecrets.java:82)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow$Builder.<init>(GoogleAuthorizationCodeFlow.java:195)
at com.emailreply.musterion.GmailApiQuickstart.main(GmailApiQuickstart.java:40)
Googling, I can't find a simple answer, so am assuming stupidity or a library missing/incorrect.
The libraries as I have them are:
/libs/commons-logging-1.1.1.jar
/libs/google-api-client-1.19.0.jar
/libs/google-api-client-android-1.19.0.jar
/libs/google-api-client-appengine-1.19.0.jar
/libs/google-api-client-gson-1.19.0.jar
/libs/google-api-client-jackson2-1.19.0.jar
/libs/google-api-client-java6-1.19.0.jar
/libs/google-api-client-servlet-1.19.0.jar
/libs/google-http-client-1.19.0.jar
/libs/google-http-client-android-1.19.0.jar
/libs/google-http-client-appengine-1.19.0.jar
/libs/google-http-client-gson-1.19.0.jar
/libs/google-http-client-jackson2-1.19.0.jar
/libs/google-http-client-jdo-1.19.0.jar
/libs/google-oauth-client-1.19.0.jar
/libs/google-oauth-client-appengine-1.19.0.jar
/libs/google-oauth-client-java6-1.19.0.jar
/libs/google-oauth-client-jetty-1.19.0.jar
/libs/google-oauth-client-servlet-1.19.0.jar
/libs/gson-2.1.jar
/libs/httpclient-4.0.1.jar
/libs/httpcore-4.0.1.jar
/libs/jackson-core-2.1.3.jar
/libs/jdo2-api-2.3-eb.jar
/libs/jetty-6.1.26.jar
/libs/jetty-util-6.1.26.jar
/libs/jsr305-1.3.9.jar
/libs/transaction-api-1.1.jar
google-api-services-gmail-v1-rev10-1.19.0.jar
The example mentioned above:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.auth.oauth2.GoogleOAuthConstants;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.gmail.Gmail;
import com.google.api.services.gmail.model.ListThreadsResponse;
import com.google.api.services.gmail.model.Thread;
public class GmailApiQuickstart {
// Check https://developers.google.ciom/gmail/api/auth/scopes for all available scopes
private static final String SCOPE = "https://www.googleapis.com/auth/gmail.readonly";
private static final String APP_NAME = "Gmail API Quickstart";
// Email address of the user, or "me" can be used to represent the currently authorized user.
private static final String USER = "me";
// Path to the client_secret.json file downloaded from the Developer Console
private static final String CLIENT_SECRET_PATH = "./client_secret.json";
public static void main (String [] args) throws IOException {
HttpTransport httpTransport = new NetHttpTransport();
JsonFactory jsonFactory = new JacksonFactory();
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(jsonFactory, new BufferedReader(new InputStreamReader(GmailApiQuickstart.class.getResourceAsStream(CLIENT_SECRET_PATH))));
// Allow user to authorize via url.
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
httpTransport, jsonFactory, clientSecrets, Arrays.asList(SCOPE))
.setAccessType("online")
.setApprovalPrompt("auto").build();
String url = flow.newAuthorizationUrl().setRedirectUri(GoogleOAuthConstants.OOB_REDIRECT_URI).build();
System.out.println("Please open the following URL in your browser then type the authorization code:\n" + url);
// Read code entered by user.
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String code = br.readLine();
// Generate Credential using retrieved code.
GoogleTokenResponse response = flow.newTokenRequest(code)
.setRedirectUri(GoogleOAuthConstants.OOB_REDIRECT_URI).execute();
GoogleCredential credential = new GoogleCredential()
.setFromTokenResponse(response);
// Create a new authorized Gmail API client
Gmail service = new Gmail.Builder(httpTransport, jsonFactory, credential)
.setApplicationName(APP_NAME).build();
// Retrieve a page of Threads; max of 100 by default.
ListThreadsResponse threadsResponse = service.users().threads().list(USER).execute();
List<Thread> threads = threadsResponse.getThreads();
// Print ID of each Thread.
for (Thread thread : threads) {
System.out.println("Thread ID: " + thread.getId());
}
}
}
I replaced the reference to CLIENT_SECRET_PATH with:
new BufferedReader(new InputStreamReader(GmailApiQuickstart.class.getResourceAsStream(CLIENT_SECRET_PATH)))
for no other reason than to try something different. It does work and reads the file correctly.
Any ideas?

Right, after some more research (asking a colleague/genius), I found the problem. Basically the GoogleClientSecrets object was not being properly bound with the information from my client_secrets.json file. This meant that during authentication, objects were null resulting in the IllegalArgumentException.
So the original file which looked like this:
{
"private_key_id": "zzz",
"private_key": "-----BEGIN PRIVATE KEY-----\nxyz\n-----END PRIVATE KEY-----\n",
"client_email": "1234#developer.gserviceaccount.com",
"client_id": "1wdfghyjmp.apps.googleusercontent.com",
"type": "service_account"
}
was edited to look like this:
{
"web" : {
"private_key_id": "zzz",
"private_key": "-----BEGIN PRIVATE KEY-----\nxyz\n-----END PRIVATE KEY-----\n",
"client_email": "1234#developer.gserviceaccount.com",
"client_id": "1wdfghyjmp.apps.googleusercontent.com",
"type": "service_account"
}
}
This allowed me to progress through the code with authentication.
Hope this helps.

here is a working example of non-interactive auth for Google Non-interactive authorization with Google OAuth2
the problem is not in "web" tag in the client json, but rather in the fact that their example is for web authentication while their suggested way of generating credentials is for non-interactive "service account". they have multiple problems with their documentation.

Exception when authenticating to Google Drive using Java API

I'm having some problems while uploading a .txt file with Google Drive API. Here's my code:
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson.JacksonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
public class DriveCommandLine {
private static String CLIENT_ID = "client_id";
private static String CLIENT_SECRET = "client_secret";
private static String REDIRECT_URI = "urn:ietf:wg:oauth:2.0:oob";
public static void main(String[] args) throws IOException {
HttpTransport httpTransport = new NetHttpTransport();
JsonFactory jsonFactory = new JacksonFactory();
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
httpTransport, jsonFactory, CLIENT_ID, CLIENT_SECRET, Arrays.asList(DriveScopes.DRIVE))
.setAccessType("online")
.setApprovalPrompt("auto").build();
String url = flow.newAuthorizationUrl().setRedirectUri(REDIRECT_URI).build();
System.out.println("Please open the following URL in your browser then type the authorization code:");
System.out.println(" " + url);
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String code = br.readLine();
GoogleTokenResponse response = flow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();
GoogleCredential credential = new GoogleCredential().setFromTokenResponse(response);
//Create a new authorized API client
Drive service = new Drive.Builder(httpTransport, jsonFactory, credential).build();
//Insert a file
File body = new File();
body.setTitle("Document Example");
body.setDescription("This is a test of Google Drive SDK");
body.setMimeType("text/plain");
java.io.File fileContent = new java.io.File("document.txt");
FileContent mediaContent = new FileContent("text/plain", fileContent);
File file = service.files().insert(body, mediaContent).execute();
System.out.println("File ID: " + file.getId());
}
}
The problem it's in this line:
GoogleTokenResponse response = flow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();
And the errors are:
Exception in thread "main" javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1836)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1794)
at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1777)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1296)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1273)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:523)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1087)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:79)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:895)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:299)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:147)
**at DriveCommandLine.main(DriveCommandLine.java:43)**
Caused by: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:90)
at sun.security.validator.Validator.getInstance(Validator.java:179)
at sun.security.ssl.X509TrustManagerImpl.getValidator(X509TrustManagerImpl.java:314)
at sun.security.ssl.X509TrustManagerImpl.checkTrustedInit(X509TrustManagerImpl.java:173)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:186)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:126)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1319)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:154)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:868)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:804)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:966)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1262)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1289)
... 10 more
Caused by: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at java.security.cert.PKIXParameters.setTrustAnchors(PKIXParameters.java:200)
at java.security.cert.PKIXParameters.<init>(PKIXParameters.java:120)
at java.security.cert.PKIXBuilderParameters.<init>(PKIXBuilderParameters.java:104)
at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:88)
... 22 more

You cannot use this sample (that is for Google Application based on localhost (client-side)) with methods provided for WebApplication. You need to instantiate a Google Web Application (server-side using HttpServlet) and use the redirect URI for a doGet method to catch automatically the code and exchange data to get the correct Authorization. See OAuth 2.0 and OAuth 2.0 for WebApplication