Esempi di utilizzo di Amazon Polly SDK per Java 2.x

I seguenti esempi di codice mostrano come eseguire azioni e implementare scenari comuni utilizzando Amazon Polly. AWS SDK for Java 2.x

Le operazioni sono estratti di codice da programmi più grandi e devono essere eseguite nel contesto. Sebbene le operazioni mostrino come richiamare le singole funzioni del servizio, è possibile visualizzarle contestualizzate negli scenari correlati e negli esempi tra servizi.

Scenari: esempi di codice che mostrano come eseguire un'attività specifica richiamando più funzioni all'interno dello stesso servizio.

Ogni esempio include un collegamento a GitHub, dove puoi trovare istruzioni su come configurare ed eseguire il codice nel contesto.

Azioni

DescribeVoices

Il seguente esempio di codice mostra come utilizzareDescribeVoices.

SDKper Java 2.x

Nota

C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.polly.PollyClient;
import software.amazon.awssdk.services.polly.model.DescribeVoicesRequest;
import software.amazon.awssdk.services.polly.model.DescribeVoicesResponse;
import software.amazon.awssdk.services.polly.model.PollyException;
import software.amazon.awssdk.services.polly.model.Voice;
import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeVoicesSample {
    public static void main(String args[]) {
        PollyClient polly = PollyClient.builder()
                .region(Region.US_WEST_2)
                .build();

        describeVoice(polly);
        polly.close();
    }

    public static void describeVoice(PollyClient polly) {
        try {
            DescribeVoicesRequest voicesRequest = DescribeVoicesRequest.builder()
                    .languageCode("en-US")
                    .build();

            DescribeVoicesResponse enUsVoicesResult = polly.describeVoices(voicesRequest);
            List<Voice> voices = enUsVoicesResult.voices();
            for (Voice myVoice : voices) {
                System.out.println("The ID of the voice is " + myVoice.id());
                System.out.println("The gender of the voice is " + myVoice.gender());
            }

        } catch (PollyException e) {
            System.err.println("Exception caught: " + e);
            System.exit(1);
        }
    }
}

• Per API i dettagli, vedi DescribeVoices AWS SDK for Java 2.xAPIReference.

ListLexicons

Il seguente esempio di codice mostra come utilizzareListLexicons.

SDKper Java 2.x

Nota

C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.polly.PollyClient;
import software.amazon.awssdk.services.polly.model.ListLexiconsResponse;
import software.amazon.awssdk.services.polly.model.ListLexiconsRequest;
import software.amazon.awssdk.services.polly.model.LexiconDescription;
import software.amazon.awssdk.services.polly.model.PollyException;
import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class ListLexicons {
    public static void main(String args[]) {
        PollyClient polly = PollyClient.builder()
                .region(Region.US_WEST_2)
                .build();

        listLexicons(polly);
        polly.close();
    }

    public static void listLexicons(PollyClient client) {
        try {
            ListLexiconsRequest listLexiconsRequest = ListLexiconsRequest.builder()
                    .build();

            ListLexiconsResponse listLexiconsResult = client.listLexicons(listLexiconsRequest);
            List<LexiconDescription> lexiconDescription = listLexiconsResult.lexicons();
            for (LexiconDescription lexDescription : lexiconDescription) {
                System.out.println("The name of the Lexicon is " + lexDescription.name());
            }

        } catch (PollyException e) {
            System.err.println("Exception caught: " + e);
            System.exit(1);
        }
    }
}

• Per API i dettagli, vedi ListLexicons AWS SDK for Java 2.xAPIReference.

SynthesizeSpeech

Il seguente esempio di codice mostra come utilizzareSynthesizeSpeech.

SDKper Java 2.x

Nota

C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import javazoom.jl.decoder.JavaLayerException;
import software.amazon.awssdk.core.ResponseInputStream;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.polly.PollyClient;
import software.amazon.awssdk.services.polly.model.DescribeVoicesRequest;
import software.amazon.awssdk.services.polly.model.Voice;
import software.amazon.awssdk.services.polly.model.DescribeVoicesResponse;
import software.amazon.awssdk.services.polly.model.OutputFormat;
import software.amazon.awssdk.services.polly.model.PollyException;
import software.amazon.awssdk.services.polly.model.SynthesizeSpeechRequest;
import software.amazon.awssdk.services.polly.model.SynthesizeSpeechResponse;
import java.io.IOException;
import java.io.InputStream;
import javazoom.jl.player.advanced.AdvancedPlayer;
import javazoom.jl.player.advanced.PlaybackEvent;
import javazoom.jl.player.advanced.PlaybackListener;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class PollyDemo {
    private static final String SAMPLE = "Congratulations. You have successfully built this working demo " +
            " of Amazon Polly in Java Version 2. 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 static void main(String args[]) {
        PollyClient polly = PollyClient.builder()
                .region(Region.US_WEST_2)
                .build();

        talkPolly(polly);
        polly.close();
    }

    public static void talkPolly(PollyClient polly) {
        try {
            DescribeVoicesRequest describeVoiceRequest = DescribeVoicesRequest.builder()
                    .engine("standard")
                    .build();

            DescribeVoicesResponse describeVoicesResult = polly.describeVoices(describeVoiceRequest);
            Voice voice = describeVoicesResult.voices().stream()
                    .filter(v -> v.name().equals("Joanna"))
                    .findFirst()
                    .orElseThrow(() -> new RuntimeException("Voice not found"));
            InputStream stream = synthesize(polly, SAMPLE, voice, OutputFormat.MP3);
            AdvancedPlayer player = new AdvancedPlayer(stream,
                    javazoom.jl.player.FactoryRegistry.systemRegistry().createAudioDevice());
            player.setPlayBackListener(new PlaybackListener() {
                public void playbackStarted(PlaybackEvent evt) {
                    System.out.println("Playback started");
                    System.out.println(SAMPLE);
                }

                public void playbackFinished(PlaybackEvent evt) {
                    System.out.println("Playback finished");
                }
            });

            // play it!
            player.play();

        } catch (PollyException | JavaLayerException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static InputStream synthesize(PollyClient polly, String text, Voice voice, OutputFormat format)
            throws IOException {
        SynthesizeSpeechRequest synthReq = SynthesizeSpeechRequest.builder()
                .text(text)
                .voiceId(voice.id())
                .outputFormat(format)
                .build();

        ResponseInputStream<SynthesizeSpeechResponse> synthRes = polly.synthesizeSpeech(synthReq);
        return synthRes;
    }
}

• Per API i dettagli, vedi SynthesizeSpeech AWS SDK for Java 2.xAPIReference.