? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 百度語音識別合成案例

本文截取之前項目里涉及到的語音識別和合成部分進行代碼展示。其中讀取語音部分需要優化，這里是demo讀取的是存在本地的音頻文件，建議走音頻流。

1 控制器示例代碼

package com.cn.artifact.admin.controller; import com.shenl.entry.startModel; import com.shenl.model.Model2Ans; import com.shenl.utils.HttpRequestUtils; import com.shenl.voice.Sample; import org.json.JSONException; import org.json.JSONObject; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.PrintWriter; import java.net.URLDecoder; import java.util.Iterator;/*** Created by SHENLIANG5 on 2017/6/13.*/ @Controller public class VoicegenController {private static final long serialVersionUID = 1L;private String url;String src;@RequestMapping("/getVoice")@ResponseBodypublic void str2Voice(HttpServletRequest request, HttpServletResponse response) throws Exception{response.setContentType("text/html;charset=utf-8");response.setCharacterEncoding("utf-8");url = "http://tsn.baidu.com/text2audio";Sample.getToken(); String rs = Sample.method2("G:\\test3.wav");System.out.println(rs+"hello text");Model2Ans.mod2Ans(rs);String ans=startModel.res.replace("", "");//Model2Ans.mod2Ans("紅燒肉怎么做?");String strParam = "tex=" + ans + "&lan=zh&cuid=" + "30-B4-9E-07-C7-E0" + "&ctp=1&tok=" + Sample.getRefreToken();src = url + "?" + strParam;src = URLDecoder.decode(src,"UTF-8");System.out.println(src+"hello there");JSONObject jsonResult = HttpRequestUtils.httpPostVoiceGen(url, strParam, false);JSONObject result = new JSONObject();try{result =ParsaResult(jsonResult);}catch(JSONException e){System.out.println("You got an error in Json Parse!");e.printStackTrace();}PrintWriter pw = response.getWriter();pw.print(result.toString());pw.flush();pw.close();}private JSONObject ParsaResult(JSONObject jsonResult) throws JSONException {JSONObject result = new JSONObject();String key;Iterator<?> keys = jsonResult.keys();while(keys.hasNext()) {key = (String)keys.next();if(key.equals("succ")) {result.put("result", "succ");result.put("content", src);break;}if(key.equals("err_no")) {result.put("result", "fail");result.put("content", jsonResult.getString(key));break;}}return result;}}

2 音頻合成、語音識別相關代碼:

package com.shenl.voice;import com.shenl.utils.set.JSONObject;import javax.xml.bind.DatatypeConverter; import java.io.*; import java.net.HttpURLConnection; import java.net.URL; import java.util.Iterator; import java.net.URLEncoder; import java.net.URLDecoder;public class Sample {private static final String serverURL = "http://vop.baidu.com/server_api";private static String token = "";//put your own params hereprivate static final String apiKey = "J2pqeSuyxJehdFy4kuDaeWdx";private static final String secretKey = "fwiurrdjyxli5jd6wex3io8enxxkogje";private static final String cuid = "***";private static final String lan="zk";public static void main(String[] args) throws Exception {getToken();System.out.println("result:\t:"+voice2str("G:/test3.wav")); }public Sample() {super();}public static void getToken() throws Exception {String getTokenURL = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials" +"&client_id=" + apiKey + "&client_secret=" + secretKey+"&lan="+lan;HttpURLConnection conn = (HttpURLConnection) new URL(getTokenURL).openConnection();//token = new JSONObject(printResponse(conn)).getString("access_token").toString();String strResponse = printResponse(conn).toString();int i = strResponse.indexOf("{"); strResponse = strResponse.substring(i);token = new JSONObject(strResponse.trim()).getString("access_token"); if (token == null)System.out.println("空");}public static String getRefreToken() throws Exception {String getTokenURL = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials" +"&client_id=" + apiKey + "&client_secret=" + secretKey+"&lan="+lan;HttpURLConnection conn = (HttpURLConnection) new URL(getTokenURL).openConnection();token = new JSONObject(printResponse(conn)).getString("access_token");return token;}public static String voice2str(String testFileName) throws Exception {File pcmFile = new File(testFileName);HttpURLConnection conn = (HttpURLConnection) new URL(serverURL).openConnection();String finInput ="";// construct paramsJSONObject params = new JSONObject();params.put("format", "wav");params.put("rate", 8000);params.put("channel", "1");params.put("token", token);params.put("cuid", cuid);params.put("len", pcmFile.length());params.put("speech", DatatypeConverter.printBase64Binary(loadFile(pcmFile)));// add request headerconn.setRequestMethod("POST");conn.setRequestProperty("Content-Type", "application/json; charset=utf-8"); //utf-8conn.setDoInput(true);conn.setDoOutput(true);// send requestDataOutputStream wr = new DataOutputStream(conn.getOutputStream());wr.writeBytes(params.toString());wr.flush();wr.close();JSONObject jObject = new JSONObject(printResponse(conn));for (Iterator<String> iterator = jObject.keys(); iterator.hasNext();) {String key = iterator.next();if ((key.equals("result"))&& jObject.get("err_msg").equals("success.")){finInput = JSONObject.valueToString(jObject.get("result"));finInput = finInput.replaceAll("[\\[\\]\"]","");}}return finInput;}public static String getStrFromInsByCode(InputStream is, String code){StringBuilder builder=new StringBuilder();BufferedReader reader=null;try {reader = new BufferedReader(new InputStreamReader(is,code));String line;while((line=reader.readLine())!=null){builder.append(line+"\n");}} catch (Exception e) {e.printStackTrace();}finally{try {reader.close();} catch (IOException e) {e.printStackTrace();}}return builder.toString();}private static String printResponse(HttpURLConnection conn) throws Exception {if (conn.getResponseCode() != 200) {// request errorreturn "";}InputStream is = conn.getInputStream();BufferedReader rd = new BufferedReader(new InputStreamReader(is));String line;StringBuffer response = new StringBuffer();while ((line = rd.readLine()) != null) {response.append(line);response.append('\r');}rd.close();//打印響應里的詳細信息.System.out.println(new JSONObject(response.toString()).toString(4));return response.toString();}// GBK編碼轉為UTF-8private static String getUtf8String(String s) throws UnsupportedEncodingException{StringBuffer sb = new StringBuffer();sb.append(s);String xmlString = "";String xmlUtf8 = "";xmlString = new String(sb.toString().getBytes("GBK"));xmlUtf8 = URLEncoder.encode(xmlString , "GBK");return URLDecoder.decode(xmlUtf8, "UTF-8");}private static byte[] loadFile(File file) throws IOException {InputStream is = new FileInputStream(file);long length = file.length();byte[] bytes = new byte[(int) length];int offset = 0;int numRead = 0;while (offset < bytes.length&& (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {offset += numRead;}if (offset < bytes.length) {is.close();throw new IOException("Could not completely read file " + file.getName());}is.close();return bytes;}public static String method2(String testFileName) throws Exception {File pcmFile = new File(testFileName);String finInput="";HttpURLConnection conn = (HttpURLConnection) new URL(serverURL+ "?cuid=" + cuid + "&token=" + token).openConnection();// add request headerconn.setRequestMethod("POST");conn.setRequestProperty("Content-Type", "audio/pcm; rate=8000");conn.setRequestProperty("Charset", "utf-8");conn.setDoInput(true);conn.setDoOutput(true);// send requestDataOutputStream wr = new DataOutputStream(conn.getOutputStream());wr.write(loadFile(pcmFile));wr.flush();wr.close();JSONObject jObject = new JSONObject(getUtf8String(printResponse(conn)));for (Iterator<String> iterator = jObject.keys(); iterator.hasNext();) {String key = iterator.next();if ((key.equals("result"))&& jObject.get("err_msg").equals("success.")){finInput = JSONObject.valueToString(jObject.get("result"));finInput = finInput.replaceAll("[\\[\\]\"]","");}}return finInput;} }

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