使用前提与环境准备：服务开通并购买
Step By Step
1.添加pom依赖
<dependency>
<groupId>com.alibaba.nls</groupId>
<artifactId>nls-sdk-tts</artifactId>
<version>2.2.1</version>
</dependency>
2.Code Sample
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import com.alibaba.nls.client.AccessToken;
import com.alibaba.nls.client.protocol.NlsClient;
import com.alibaba.nls.client.protocol.OutputFormatEnum;
import com.alibaba.nls.client.protocol.SampleRateEnum;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizer;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizerListener;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizerResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 此示例演示了：
* 语音合成API调用。
* 动态获取token。
* 流式合成TTS。
* 首包延迟计算。
*/
// 语音合成Java SDK 调用示例
public class SpeechSynthesizerDemo {
private static final Logger logger = LoggerFactory.getLogger(SpeechSynthesizerDemo.class);
private static long startTime;
private String appKey;
NlsClient client;
public SpeechSynthesizerDemo(String appKey, String accessKeyId, String accessKeySecret) {
this.appKey = appKey;
//应用全局创建一个NlsClient实例，默认服务地址为阿里云线上服务地址。
//获取token，使用时注意在accessToken.getExpireTime()过期前再次获取。
AccessToken accessToken = new AccessToken(accessKeyId, accessKeySecret);
try {
accessToken.apply();
System.out.println("get token: " + accessToken.getToken() + ", expire time: " + accessToken.getExpireTime());
client = new NlsClient(accessToken.getToken());
} catch (IOException e) {
e.printStackTrace();
}
}
public SpeechSynthesizerDemo(String appKey, String accessKeyId, String accessKeySecret, String url) {
this.appKey = appKey;
AccessToken accessToken = new AccessToken(accessKeyId, accessKeySecret);
try {
accessToken.apply();
System.out.println("get token: " + accessToken.getToken() + ", expire time: " + accessToken.getExpireTime());
if(url.isEmpty()) {
client = new NlsClient(accessToken.getToken());
}else {
client = new NlsClient(url, accessToken.getToken());
}
} catch (IOException e) {
e.printStackTrace();
}
}
private static SpeechSynthesizerListener getSynthesizerListener() {
SpeechSynthesizerListener listener = null;
try {
listener = new SpeechSynthesizerListener() {
File f=new File("tts_test.wav");
FileOutputStream fout = new FileOutputStream(f);
private boolean firstRecvBinary = true;
//语音合成结束
@Override
public void onComplete(SpeechSynthesizerResponse response) {
//调用onComplete时表示所有TTS数据已接收完成，因此为整个合成数据的延迟。该延迟可能较大，不一定满足实时场景。
System.out.println("name: " + response.getName() +
", status: " + response.getStatus()+
", output file :"+f.getAbsolutePath()
);
}
//语音合成的语音二进制数据
@Override
public void onMessage(ByteBuffer message) {
try {
if(firstRecvBinary) {
//计算首包语音流的延迟，收到第一包语音流时，即可以进行语音播放，以提升响应速度（特别是实时交互场景下）。
firstRecvBinary = false;
long now = System.currentTimeMillis();
logger.info("tts first latency : " + (now - SpeechSynthesizerDemo.startTime) + " ms");
}
byte[] bytesArray = new byte[message.remaining()];
message.get(bytesArray, 0, bytesArray.length);
fout.write(bytesArray);
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onFail(SpeechSynthesizerResponse response){
//task_id是调用方和服务端通信的唯一标识，当遇到问题时需要提供task_id以便排查。
System.out.println(
"task_id: " + response.getTaskId() +
//状态码 20000000 表示识别成功
", status: " + response.getStatus() +
//错误信息
", status_text: " + response.getStatusText());
}
};
} catch (Exception e) {
e.printStackTrace();
}
return listener;
}
public void process() {
SpeechSynthesizer synthesizer = null;
try {
//创建实例，建立连接。
synthesizer = new SpeechSynthesizer(client, getSynthesizerListener());
synthesizer.setAppKey(appKey);
//设置返回音频的编码格式
synthesizer.setFormat(OutputFormatEnum.WAV);
//设置返回音频的采样率
synthesizer.setSampleRate(SampleRateEnum.SAMPLE_RATE_16K);
//发音人
synthesizer.setVoice("siyue");
//语调，范围是-500~500，可选，默认是0。
synthesizer.setPitchRate(100);
//语速，范围是-500~500，默认是0。
synthesizer.setSpeechRate(100);
//设置用于语音合成的文本
synthesizer.setText("欢迎使用阿里巴巴智能语音合成服务，您可以说杭州明天天气怎么样啊，如果天气晴朗的话，我们大家准备去爬山野营，看看美丽的自然风景");
// 是否开启字幕功能（返回相应文本的时间戳），默认不开启，需要注意并非所有发音人都支持该参数。
synthesizer.addCustomedParam("enable_subtitle", false);
//此方法将以上参数设置序列化为JSON格式发送给服务端，并等待服务端确认。
long start = System.currentTimeMillis();
synthesizer.start();
logger.info("tts start latency " + (System.currentTimeMillis() - start) + " ms");
SpeechSynthesizerDemo.startTime = System.currentTimeMillis();
//等待语音合成结束
synthesizer.waitForComplete();
logger.info("tts stop latency " + (System.currentTimeMillis() - start) + " ms");
} catch (Exception e) {
e.printStackTrace();
} finally {
//关闭连接
if (null != synthesizer) {
synthesizer.close();
}
}
}
public void shutdown() {
client.shutdown();
}
public static void main(String[] args) throws Exception {
String appKey = "XXXXXXXXXX";
String id = "XXXXXXXXXX";
String secret = "XXXXXXXXXX";
String url = ""; //默认值：wss://nls-gateway.cn-shanghai.aliyuncs.com/ws/v1
/* if (args.length == 3) {
appKey = args[0];
id = args[1];
secret = args[2];
} else if (args.length == 4) {
appKey = args[0];
id = args[1];
secret = args[2];
url = args[3];
} else {
System.err.println("run error, need params(url is optional): " + "<app-key> <AccessKeyId> <AccessKeySecret> [url]");
System.exit(-1);
}*/
SpeechSynthesizerDemo demo = new SpeechSynthesizerDemo(appKey, id, secret, url);
demo.process();
demo.shutdown();
}
}
3.测试结果
get token: b42af56233c84ca5a6362e6f24cfbc2e, expire time: 1640198528
name: SynthesisCompleted, status: 20000000, output file :D:\ZhinyYjh\tts_test.wav
更多参考
智能语音交互：快速开始
智能语言交互：语音合成