Use the .p12 file from the classpath for GoogleCredential

Question

I am making a java command line application packaged in a single JAR file that uses some of the Google APIs.

I need to configure the GoogleCredential object from the private key "Credentials.p12".

GoogleCredential credential = new GoogleCredential.Builder()
                    .setTransport(httpTransport)
                    .setJsonFactory(jsonFactory)
                    .setServiceAccountId("[e-mail]")
                    .setServiceAccountScopes(Arrays.asList(DirectoryScopes.ADMIN_DIRECTORY_GROUP, DirectoryScopes.ADMIN_DIRECTORY_USER, DirectoryScopes.ADMIN_DIRECTORY_ORGUNIT))
                    .setServiceAccountUser(emailAccount)
                    //THE CODE BELOW IS IMPORTANT: I need to change this
                    .setServiceAccountPrivateKeyFromP12File(new File("Credentials.p12"))
                    .build();

        directory = new Directory.Builder(httpTransport, jsonFactory, credential)
                .setApplicationName("My Cmd App")
                .build();

Now I was able to get it to work, but the file "Credentials.p12" is outside of the packed JAR file.

How do I get it to work using the p12 file from the JAR?

From this documentation, the only alternative I can use is a variant of the method that uses the PrivateKey object. I am considering using InputStream to get the p12 file from the classpath:

InputStream is = this.getClass().getResourceAsStream("Credentials.p12");

I absolutely do not know how to do this.

, , Google OAuth2. , , , : Credential.p12 JAR - .

Answer 1

GoogleCredential.Builder GoogleCredential.Builder :

• p12, Google, "notasecret"
• "privatekey"

InputStream:

KeyStore keystore = KeyStore.getInstance("PKCS12");
keystore.load(this.getClass().getClassLoader().getResourceAsStream("Credentials.p12"), "notasecret".toCharArray());
PrivateKey pk = (PrivateKey)keystore.getKey("privatekey", "notasecret".toCharArray());

GoogleCredential Builder:

GoogleCredential credential = new GoogleCredential.Builder()
                    .setTransport(httpTransport)
                    .setJsonFactory(jsonFactory)
                    .setServiceAccountId("[e-mail]")
                    .setServiceAccountScopes(Arrays.asList(DirectoryScopes.ADMIN_DIRECTORY_GROUP, DirectoryScopes.ADMIN_DIRECTORY_USER, DirectoryScopes.ADMIN_DIRECTORY_ORGUNIT))
                    .setServiceAccountUser(emailAccount)
                    .setServiceAccountPrivateKey(pk) //<----THIS
                    .build();

Answer 2

.

GoogleCredential credential = new GoogleCredential.Builder()
            .setTransport(httpTransport)
            .setJsonFactory(JSON_FACTORY)
            .setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
            .setServiceAccountPrivateKeyFromP12File(new File(KEY_FILE_LOCATION))
            .setServiceAccountScopes(AnalyticsScopes.all())
            .build();