amazon-web-services - 通过 java 创建 AWS Amazon Polly mp3 文件

Question

我需要使用 AEM(Java) 创建文本到语音组件，为此我正在使用 Amazon polly。我需要使用 SDK 2.0 版本的 AWS 库。我正在发送请求中的文本并将 mp3 文件直接保存到 AWS S3 存储桶中，作为回报，我需要 mp3 文件的 url。我找不到任何使用 polly 创建 mp3 文件并直接存储在 S3 存储桶上的示例。谁能给我提供通过java做的例子？

Answer 1

这是一个（https://docs.aws.amazon.com/polly/latest/dg/SynthesizeSpeechSample.html）

package com.amazonaws.polly.samples;

import com.amazonaws.services.polly.AmazonPolly;
import com.amazonaws.services.polly.AmazonPollyClientBuilder;
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.VoiceId;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;

public class SynthesizeSpeechSample {
    AmazonPolly client = AmazonPollyClientBuilder.defaultClient();

    public void synthesizeSpeech() {
        String outputFileName = "/tmp/speech.mp3";

        SynthesizeSpeechRequest synthesizeSpeechRequest = new SynthesizeSpeechRequest()
                .withOutputFormat(OutputFormat.Mp3)
                .withVoiceId(VoiceId.Joanna)
                .withText("This is a sample text to be synthesized.");

        try (FileOutputStream outputStream = new FileOutputStream(new File(outputFileName))) {
            SynthesizeSpeechResult synthesizeSpeechResult = client.synthesizeSpeech(synthesizeSpeechRequest);
            byte[] buffer = new byte[2 * 1024];
            int readBytes;

            try (InputStream in = synthesizeSpeechResult.getAudioStream()){
                while ((readBytes = in.read(buffer)) > 0) {
                    outputStream.write(buffer, 0, readBytes);
                }
            }
        } catch (Exception e) {
            System.err.println("Exception caught: " + e);
        }
    }
}