Java語言下對接百度AI介面實現音訊辨識的系統設計與實現

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class BaiduSpeechRecognition {
    public static void main(String[] args) throws IOException {
        // 需要识别的音频文件路径
        String filePath = "/path/to/audio/file.wav";
        // API Key
        String apiKey = "your_api_key";
        // Secret Key
        String secretKey = "your_secret_key";

        // 将音频文件进行Base64编码
        String base64Audio = Base64.encodeFromFile(filePath);

        // 构建请求URL
        String url = "https://vop.baidu.com/server_api" +
                "?dev_pid=1536" +
                "&cuid=your_cuid" +
                "&token=your_token";
        
        // 构建请求参数
        String params = "speech=" + URLEncoder.encode(base64Audio, "UTF-8");

        // 发送POST请求
        HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.getOutputStream().write(params.getBytes());

        // 解析返回的JSON数据
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        StringBuilder result = new StringBuilder();
        while ((line = reader.readLine()) != null) {
            result.append(line);
        }
        reader.close();

        // 打印识别结果
        System.out.println(result.toString());
    }
}

// 系统架构图
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|     前端       |
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       V
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|     后端       |
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// Java代码示例（前端部分）
import javax.sound.sampled.*;

public class AudioRecorder {
    private TargetDataLine line;

    public AudioRecorder() throws LineUnavailableException {
        AudioFormat format = new AudioFormat(8000, 16, 1, true, true);
        line = AudioSystem.getTargetDataLine(format);
        line.open(format);
    }

    public void start() {
        line.start();
    }

    public void stop() {
        line.stop();
        line.close();
    }

    public byte[] getAudioData() {
        byte[] audioData = new byte[line.available()];
        line.read(audioData, 0, audioData.length);
        return audioData;
    }
}

// Java代码示例（后端部分）
public class BaiduSpeechRecognition {
    public static void main(String[] args) throws IOException, LineUnavailableException {
        // 创建音频录制对象
        AudioRecorder recorder = new AudioRecorder();
        recorder.start();

        // 等待用户录制音频
        System.out.print("Recording...");
        try {
            Thread.sleep(5000); // 录制5s音频
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("Done!");

        // 停止音频录制
        recorder.stop();

        // 获取音频数据
        byte[] audioData = recorder.getAudioData();

        // 将音频数据进行Base64编码，并调用百度AI接口进行识别

        // ...
    }
}