Пример за AWS Polly Java

Опитвам се да изпълня прост пример на Java, който използва услугата AWS Polly. Използвам кода, предоставен от AWS в тяхната документация. Създадох прост проект Maven, използвайки следното -**
1. групов идентификатор - com.amazonaws.polly
2. идентификатор на артефакт - java-demo
3. версия - 0.0.1-SNAPSHOT

Следва структурата на моя проект -

Следва моят pom.xml -

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.amazonaws.polly</groupId>
  <artifactId>java-demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <dependencies>
        <!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-polly -->
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-polly</artifactId>
            <version>1.11.77</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.googlecode.soundlibs/jlayer -->
        <dependency>
            <groupId>com.googlecode.soundlibs</groupId>
            <artifactId>jlayer</artifactId>
            <version>1.0.1-1</version>
        </dependency>

    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>java</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <mainClass>com.amazonaws.demos.polly.PollyDemo</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
    
</project>

Следва моят Java клас -

package com.amazonaws.demos.polly;

import java.io.IOException;
import java.io.InputStream;

import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.polly.AmazonPollyClient;
import com.amazonaws.services.polly.model.DescribeVoicesRequest;
import com.amazonaws.services.polly.model.DescribeVoicesResult;
import com.amazonaws.services.polly.model.OutputFormat;
import com.amazonaws.services.polly.model.SynthesizeSpeechRequest;
import com.amazonaws.services.polly.model.SynthesizeSpeechResult;
import com.amazonaws.services.polly.model.Voice;

import javazoom.jl.player.advanced.AdvancedPlayer;
import javazoom.jl.player.advanced.PlaybackEvent;
import javazoom.jl.player.advanced.PlaybackListener;

public class PollyDemo {

    private final AmazonPollyClient polly;
    private final Voice voice;
    private static final String SAMPLE = "Congratulations. You have successfully built this working demo "+
    "of Amazon Polly in Java. Have fun building voice enabled apps with Amazon Polly (that's me!), and always"+ 
    "look at the AWS website for tips and tricks on using Amazon Polly and other great services from AWS";

    public PollyDemo(Region region) {

        //Didn't work
        //AWSCredentials credentials = new BasicAWSCredentials("someAccessKey","someSecretKey");
        //polly = new AmazonPollyClient(credentials);

        //Didn't work
        // create an Amazon Polly client in a specific region
        polly = new AmazonPollyClient(new DefaultAWSCredentialsProviderChain(), 
        new ClientConfiguration());

        polly.setRegion(region);
        // Create describe voices request.
        DescribeVoicesRequest describeVoicesRequest = new DescribeVoicesRequest();

        // Synchronously ask Amazon Polly to describe available TTS voices.
        DescribeVoicesResult describeVoicesResult = polly.describeVoices(describeVoicesRequest);
        voice = describeVoicesResult.getVoices().get(0);
    }

    public InputStream synthesize(String text, OutputFormat format) throws IOException {
        SynthesizeSpeechRequest synthReq = 
        new SynthesizeSpeechRequest().withText(text).withVoiceId(voice.getId())
                .withOutputFormat(format);
        SynthesizeSpeechResult synthRes = polly.synthesizeSpeech(synthReq);

        return synthRes.getAudioStream();
    }

    public static void main(String args[]) throws Exception {
        //create the test class
        PollyDemo helloWorld = new PollyDemo(Region.getRegion(Regions.US_EAST_1));
        //get the audio stream
        InputStream speechStream = helloWorld.synthesize(SAMPLE, OutputFormat.Mp3);

        //create an MP3 player
        AdvancedPlayer player = new AdvancedPlayer(speechStream,
                javazoom.jl.player.FactoryRegistry.systemRegistry().createAudioDevice());

        player.setPlayBackListener(new PlaybackListener() {
            @Override
            public void playbackStarted(PlaybackEvent evt) {
                System.out.println("Playback started");
                System.out.println(SAMPLE);
            }
            
            @Override
            public void playbackFinished(PlaybackEvent evt) {
                System.out.println("Playback finished");
            }
        });
        
        
        // play it!
        player.play();
        
    }
} 

Изпълнявам кода локално, следователно имам моите идентификационни данни за AWS IAM, конфигурирани в моята система,
Моят IAM потребител също има достъп до услугата AWS Polly.

Получавам следната грешка, когато стартирам кода -

Exception in thread "main" com.amazonaws.services.polly.model.AmazonPollyException: The security token included in the request is invalid. (Service: AmazonPolly; Status Code: 403; Error Code: UnrecognizedClientException; Request ID: 4d4b01fb-8015-11e8-8e18-4548f95fba92)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1586)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1254)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1035)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:747)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:721)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:704)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:672)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:654)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:518)
    at com.amazonaws.services.polly.AmazonPollyClient.doInvoke(AmazonPollyClient.java:668)
    at com.amazonaws.services.polly.AmazonPollyClient.invoke(AmazonPollyClient.java:644)
    at com.amazonaws.services.polly.AmazonPollyClient.describeVoices(AmazonPollyClient.java:383)
    at com.amazonaws.demos.polly.PollyDemo.<init>(PollyDemo.java:39)
    at com.amazonaws.demos.polly.PollyDemo.main(PollyDemo.java:54)

Препоръчвам следния документ на AWS за примера на Java на Polly- https://docs.aws.amazon.com/polly/latest/dg/examples-java.html

Може ли някой да ми помогне да поправя кода си? Какво да променя в моя код?