Java實現文字轉語音

Java實現文字轉語音
導入jar包
下載jacob-1.18.zip
並導入jacob.jar、json-20160810.jar、log4j-1.2.17.jar
將解壓後的文件中jacob-1.18-x64.dll複製到對應的JDK中（個人是C:Program FilesJavajdk1.8.0_152jrebin）代碼實例
[Java] 純文本查看 複製代碼
?

package baidu.restapi.common;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URLEncoder;

/**

• 與鏈接相關的Util類

*/
public class ConnUtil {

/**
 * UrlEncode， UTF-8 編碼
 *
 * @param str 原始字符串
 * @return
 */
public static String urlEncode(String str) {
    String result = null;
    try {
        result = URLEncoder.encode(str, "UTF-8");
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return result;
}

/**
 * 從HttpURLConnection 獲取返回的字符串
 *
 * @param conn
 * @return
 * @throws IOException
 * @throws DemoException
 */
public static String getResponseString(HttpURLConnection conn) throws IOException, DemoException {
    return new String(getResponseBytes(conn));
}

/**
 * 從HttpURLConnection 獲取返回的bytes
 * 注意 HttpURLConnection自身問題， 400類錯誤，會直接拋出異常。不能獲取conn.getInputStream();
 *
 * @param conn
 * @return
 * @throws IOException   http請求錯誤
 * @throws DemoException http 的狀態碼不是 200
 */
public static byte[] getResponseBytes(HttpURLConnection conn) throws IOException, DemoException {
    int responseCode = conn.getResponseCode();
    if (responseCode != 200) {
        System.err.println("http 請求返回的狀態碼錯誤，指望200， 當前是 " + responseCode);
        if (responseCode == 401) {
            System.err.println("多是appkey appSecret 填錯");
        }
        throw new DemoException("http response code is" + responseCode);
    }

    InputStream inputStream = conn.getInputStream();
    byte[] result = getInputStreamContent(inputStream);
    return result;
}

/**
 * 將InputStream內的內容所有讀取，做爲bytes返回
 *
 * @param is
 * @return
 * @throws IOException @see InputStream.read()
 */
public static byte[] getInputStreamContent(InputStream is) throws IOException {
    byte[] b = new byte[1024];
    // 定義一個輸出流存儲接收到的數據
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    // 開始接收數據
    int len = 0;
    while (true) {
        len = is.read(b);
        if (len == -1) {
            // 數據讀完
            break;
        }
        byteArrayOutputStream.write(b, 0, len);
    }
    return byteArrayOutputStream.toByteArray();
}

}

[Java] 純文本查看 複製代碼
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package baidu.restapi.common;

import org.json.JSONObject;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

/**

• token的獲取類
• 將apiKey和secretKey換取token，注意有效期保存在expiresAt

*/
public class TokenHolder {

public static final String ASR_SCOPE = "audio_voice_assistant_get";

public static final String TTS_SCOPE = "audio_tts_post";

/**
 * url , Token的url，http能夠改成https
 */
private static final String url = "http://openapi.baidu.com/oauth/2.0/token";

/**
 * asr的權限 scope 是  "audio_voice_assistant_get"
 * tts 的權限 scope 是 "audio_tts_post"
 */
private String scope;

/**
 * 網頁上申請語音識別應用獲取的apiKey
 */
private String apiKey;

/**
 * 網頁上申請語音識別應用獲取的secretKey
 */
private String secretKey;

/**
 * 保存訪問接口獲取的token
 */
private String token;

/**
 * 當前的時間戳，毫秒
 */
private long expiresAt;

/**
 * @param apiKey    網頁上申請語音識別應用獲取的apiKey
 * @param secretKey 網頁上申請語音識別應用獲取的secretKey
 */
public TokenHolder(String apiKey, String secretKey, String scope) {
    this.apiKey = apiKey;
    this.secretKey = secretKey;
    this.scope = scope;
}

/**
 * 獲取token，refresh 方法後調用有效
 *
 * @return
 */
public String getToken() {
    return token;
}

/**
 * 獲取過時時間，refresh 方法後調用有效
 *
 * @return
 */
public long getExpiresAt() {
    return expiresAt;
}

/**
 * 獲取token
 *
 * @return
 * @throws IOException   http請求錯誤
 * @throws DemoException http接口返回不是 200, access_token未獲取
 */
public void resfresh() throws Exception {
    String getTokenURL = url + "?grant_type=client_credentials"
            + "&client_id=" + ConnUtil.urlEncode(apiKey) + "&client_secret=" + ConnUtil.urlEncode(secretKey);

    // 打印的url出來放到瀏覽器內能夠復現
    System.out.println("token url:" + getTokenURL);

    URL url = new URL(getTokenURL);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setConnectTimeout(5000);
    String result = ConnUtil.getResponseString(conn);
    System.out.println("Token result json:" + result);
    parseJson(result);
}

/**
 * @param result token接口得到的result
 * @throws DemoException
 */
private void parseJson(String result) throws Exception {
    JSONObject json = new JSONObject(result);
    if (!json.has("access_token")) {
        // 返回沒有access_token字段
        throw new DemoException("access_token not obtained, " + result);
    }
    if (!json.has("scope")) {
        // 返回沒有scope字段
        throw new DemoException("scopenot obtained, " + result);
    }
    if (!json.getString("scope").contains(scope)) {
        throw new DemoException("scope not exist, " + scope + "," + result);
    }
    token = json.getString("access_token");
    expiresAt = System.currentTimeMillis() + json.getLong("expires_in") * 1000;
}

}

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package baidu.restapi.common;

public class DemoException extends Exception {

public DemoException(String message) {
    super(message);
}

}

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package baidu.restapi.ttsdemo;

import baidu.restapi.common.ConnUtil;
import baidu.restapi.common.TokenHolder;
import java.io.File;
import java.io.FileOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class TtsMain {

public static void main(String[] args) throws Exception {
    (new TtsMain()).run();
}

//  填寫網頁上申請的appkey 如 $apiKey="g8eBUMSokVB1BHGmgxxxxxx"
private final String appKey = "4E1BG9lTnlSeIf1NQFlrSq6h";

// 填寫網頁上申請的APP SECRET 如 $secretKey="94dc99566550d87f8fa8ece112xxxxx"
private final String secretKey = "544ca4657ba8002e3dea3ac2f5fdd241";

// text 的內容爲"歡迎使用百度語音合成"的urlencode,utf-8 編碼
// 能夠百度搜索"urlencode"
private final String text = "歡迎使用百度語音";

// 發音人選擇, 0爲普通女聲，1爲普通男生，3爲情感合成-度逍遙，4爲情感合成-度丫丫，默認爲普通女聲
private final int per = 0;
// 語速，取值0-9，默認爲5中語速
private final int spd = 5;
// 音調，取值0-9，默認爲5中語調
private final int pit = 5;
// 音量，取值0-9，默認爲5中音量
private final int vol = 5;

public final String url = "http://tsn.baidu.com/text2audio"; // 能夠使用https

private String cuid = "1234567JAVA";

private void run() throws Exception {
    TokenHolder holder = new TokenHolder(appKey, secretKey, TokenHolder.ASR_SCOPE);
    holder.resfresh();
    String token = holder.getToken();

    String url2 = url + "?tex=" + ConnUtil.urlEncode(text);
    url2 += "&per=" + per;
    url2 += "&spd=" + spd;
    url2 += "&pit=" + pit;
    url2 += "&vol=" + vol;
    url2 += "&cuid=" + cuid;
    url2 += "&tok=" + token;
    url2 += "&lan=zh&ctp=1";
    // System.out.println(url2); // 反饋請帶上此url，瀏覽器上能夠測試
    HttpURLConnection conn = (HttpURLConnection) new URL(url2).openConnection();
    conn.setConnectTimeout(5000);
    String contentType = conn.getContentType();
    if (contentType.contains("mp3")) {
        byte[] bytes = ConnUtil.getResponseBytes(conn);
        File file = new File("result.mp3"); // 打開mp3文件便可播放
        // System.out.println( file.getAbsolutePath());
        FileOutputStream os = new FileOutputStream(file);
        os.write(bytes);
        os.close();
        System.out.println("mp3 file write to " + file.getAbsolutePath());
    } else {
        System.err.println("ERROR: content-type= " + contentType);
        String res  = ConnUtil.getResponseString(conn);
        System.err.println(res);
    }
}

}

實現效果