最近项目在做一个微信公众号，但是用的jsp+js+java，没法调用wx自带的接口，所以就找了科大讯飞的接口调用，遇到了不少波折，这里记录一下过程

注册科大讯飞账户，得到认证信息

科大讯飞语音转换文字

下载demo

demo、webapi文档

1、下载好demo文档、音频样例之后，用IDEA或者Eclipse启动就能成功
2、html的话原先在百度找了个浏览器支持MediaRecorder API的技术，最后发现用这个技术得到的音频文件科大讯飞的webapi不能识别，好难受~~~
3、最后好不容易找到了HZRecorder.js
4、直接把这俩文件拷贝出去放在一起就能实现浏览器录音

html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title></title>
</head>
<body><div><audio controls autoplay></audio><input onclick="startRecording()" type="button" value="录音" /><input onclick="stopRecording()" type="button" value="停止" /><input onclick="playRecording()" type="button" value="播放" /><input onclick="uploadAudio()" type="button" value="提交" /></div><script type="text/javascript" src="HZRecorder.js"></script><script>var recorder;var audio = document.querySelector('audio');function startRecording() {HZRecorder.get(function (rec) {recorder = rec;recorder.start();});}function stopRecording() {recorder.stop();}function playRecording() {recorder.play(audio);}function uploadAudio() {recorder.upload("Handler1.ashx", function (state, e) {switch (state) {case 'uploading':var percentComplete = Math.round(e.loaded * 100 / e.total) + '%';break;case 'ok':alert("上传成功");break;case 'error':alert("上传失败");break;case 'cancel':alert("上传被取消");break;}});}</script>
</body>
</html>

(function (window) {window.URL = window.URL || window.webkitURL;navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;var HZRecorder = function (stream, config) {config = config || {};config.sampleBits = config.sampleBits || 16;      //采样数位 8, 16config.sampleRate = config.sampleRate || (16000);   // 采样率(1/6 44100)var context = new (window.webkitAudioContext || window.AudioContext)();var audioInput = context.createMediaStreamSource(stream);var createScript = context.createScriptProcessor || context.createJavaScriptNode;var recorder = createScript.apply(context, [4096, 1, 1]);var audioData = {size: 0          // 录音文件长度, buffer: []     // 录音缓存, inputSampleRate: context.sampleRate    // 输入采样率, inputSampleBits: 16       // 输入采样数位 , outputSampleRate: config.sampleRate    // 输出采样率, oututSampleBits: config.sampleBits       // 输出采样数位 , input: function (data) {this.buffer.push(new Float32Array(data));this.size += data.length;}, compress: function () { //合并var data = new Float32Array(this.size);var offset = 0;for (var i = 0; i < this.buffer.length; i++) {data.set(this.buffer[i], offset);offset += this.buffer[i].length;}//压缩var compression = parseInt(this.inputSampleRate / this.outputSampleRate);var length = data.length / compression;var result = new Float32Array(length);var index = 0, j = 0;while (index < length) {result[index] = data[j];j += compression;index++;}return result;}, encodeWAV: function () {var sampleRate = Math.min(this.inputSampleRate, this.outputSampleRate);var sampleBits = Math.min(this.inputSampleBits, this.oututSampleBits);var bytes = this.compress();var dataLength = bytes.length * (sampleBits / 8);var buffer = new ArrayBuffer(44 + dataLength);var data = new DataView(buffer);var channelCount = 1; // 单声道var offset = 0;var writeString = function (str) {for (var i = 0; i < str.length; i++) {data.setUint8(offset + i, str.charCodeAt(i));}}// 资源交换文件标识符 writeString('RIFF'); offset += 4;// 下个地址开始到文件尾总字节数,即文件大小-8 data.setUint32(offset, 36 + dataLength, true); offset += 4;// WAV文件标志writeString('WAVE'); offset += 4;// 波形格式标志 writeString('fmt '); offset += 4;// 过滤字节,一般为 0x10 = 16 data.setUint32(offset, 16, true); offset += 4;// 格式类别 (PCM形式采样数据) data.setUint16(offset, 1, true); offset += 2;// 通道数 data.setUint16(offset, channelCount, true); offset += 2;// 采样率,每秒样本数,表示每个通道的播放速度 data.setUint32(offset, sampleRate, true); offset += 4;// 波形数据传输率 (每秒平均字节数) 单声道×每秒数据位数×每样本数据位/8 data.setUint32(offset, channelCount * sampleRate * (sampleBits / 8), true); offset += 4;// 快数据调整数 采样一次占用字节数 单声道×每样本的数据位数/8 data.setUint16(offset, channelCount * (sampleBits / 8), true); offset += 2;// 每样本数据位数 data.setUint16(offset, sampleBits, true); offset += 2;// 数据标识符 writeString('data'); offset += 4;// 采样数据总数,即数据总大小-44 data.setUint32(offset, dataLength, true); offset += 4;// 写入采样数据 if (sampleBits === 8) {for (var i = 0; i < bytes.length; i++, offset++) {var s = Math.max(-1, Math.min(1, bytes[i]));var val = s < 0 ? s * 0x8000 : s * 0x7FFF;val = parseInt(255 / (65535 / (val + 32768)));data.setInt8(offset, val, true);}} else {for (var i = 0; i < bytes.length; i++, offset += 2) {var s = Math.max(-1, Math.min(1, bytes[i]));data.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);}}return new Blob([data], { type: 'audio/wav' });}};// 开始录音this.start = function () {audioInput.connect(recorder);recorder.connect(context.destination);}// 暂停this.stop = function () {recorder.disconnect();}// 获取音频文件this.getBlob = function () {this.stop();return audioData.encodeWAV();}// 播放this.play = function (audio) {audio.src = window.URL.createObjectURL(this.getBlob());}// 上传this.upload = function (url, callback) {var fd = new FormData();fd.append("audioData", this.getBlob());var xhr = new XMLHttpRequest();if (callback) {xhr.upload.addEventListener("progress", function (e) {callback('uploading', e);}, false);xhr.addEventListener("load", function (e) {callback('ok', e);}, false);xhr.addEventListener("error", function (e) {callback('error', e);}, false);xhr.addEventListener("abort", function (e) {callback('cancel', e);}, false);}xhr.open("POST", url);xhr.send(fd);}// 音频采集recorder.onaudioprocess = function (e) {audioData.input(e.inputBuffer.getChannelData(0));}};// 抛出异常HZRecorder.throwError = function (message) {alert(message);throw new function () { this.toString = function () { return message; } }}// 是否支持录音HZRecorder.canRecording = (navigator.getUserMedia != null);// 获取录音机HZRecorder.get = function (callback, config) {if (callback) {if (navigator.getUserMedia) {navigator.getUserMedia({ audio: true } // 启用音频, function (stream) {var rec = new HZRecorder(stream, config);callback(rec);}, function (error) {switch (error.code || error.name) {case 'PERMISSION_DENIED':case 'PermissionDeniedError':console.log('用户拒绝提供信息。');break;case 'NOT_SUPPORTED_ERROR':case 'NotSupportedError':console.log('浏览器不支持硬件设备。');break;case 'MANDATORY_UNSATISFIED_ERROR':case 'MandatoryUnsatisfiedError':console.log('无法发现指定的硬件设备。');break;default:console.log('无法打开麦克风。异常信息:' + (error.code || error.name));break;}});} else {console.log('当前浏览器不支持录音功能。');return;}}}window.HZRecorder = HZRecorder;
})(window);

5、上传至服务端

6、var xhr = new XMLHttpRequest(); 回显

var jsondata = JSON.parse(xhr.responseText);

7、服务端接收上传文件

@RequestMapping(value = "/getAnswerInfo")@ResponseBodypublic Object getAnswerInfo(HttpServletRequest request, HttpServletResponse response) throws Exception {//接收参数Map<String,Object> map = new HashMap<>();String openo = request.getParameter("openo");String personid = request.getParameter("personid");String recid = get32UUID();String flag = request.getParameter("flag");File file = null;String keywords = "";//判断if (!StringUtil.isEmpty(flag) && "1".equals(flag)) {keywords = request.getParameter("keywords");map = lybZnwdService.selectByExampleByLybZsk(keywords,openo,recid,personid,getUser());} else if (!StringUtil.isEmpty(flag) && "2".equals(flag)){//这一段是接收音频文件，然后转成File文件MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;Iterator<String> iter = multiRequest.getFileNames();while (iter.hasNext()) {List<MultipartFile> files = multiRequest.getFiles(iter.next());if (files != null && files.size() > 0) {for (MultipartFile multipartFile : files) {file = WebIATWS.transferToFile(multipartFile);keywords = WebIATWS.sendStart(file);if (!StringUtil.isEmpty(keywords)) {map = lybZnwdService.selectByExampleByLybZsk(keywords.replace("。",""),openo,recid,personid,getUser());} System.out.println("result=="+keywords);}}}}return map;}

8、音频文件转成文字

package com.yawei.es.wechat.Utils;import com.google.gson.Gson;
import com.google.gson.JsonObject;
import okhttp3.*;
import org.springframework.web.multipart.MultipartFile;import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.*;
import java.net.URL;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.*;/*** 语音听写流式 WebAPI 接口调用示例 接口文档（必看）：https://doc.xfyun.cn/rest_api/语音听写（流式版）.html* webapi 听写服务参考帖子（必看）：http://bbs.xfyun.cn/forum.php?mod=viewthread&tid=38947&extra=* 语音听写流式WebAPI 服务，热词使用方式：登陆开放平台https://www.xfyun.cn/后，找到控制台--我的应用---语音听写---个性化热词，上传热词* 注意：热词只能在识别的时候会增加热词的识别权重，需要注意的是增加相应词条的识别率，但并不是绝对的，具体效果以您测试为准。* 错误码链接：https://www.xfyun.cn/document/error-code （code返回错误码时必看）* 语音听写流式WebAPI 服务，方言或小语种试用方法：登陆开放平台https://www.xfyun.cn/后，在控制台--语音听写（流式）--方言/语种处添加* 添加后会显示该方言/语种的参数值* @author iflytek*/public class WebIATWS extends WebSocketListener {private static final String hostUrl = "https://iat-api.xfyun.cn/v2/iat"; //中英文，http url 不支持解析 ws/wss schema// private static final String hostUrl = "https://iat-niche-api.xfyun.cn/v2/iat";//小语种private static final String apiKey = "xxx"; //在控制台-我的应用-语音听写（流式版）获取private static final String apiSecret = "xxx"; //在控制台-我的应用-语音听写（流式版）获取private static final String appid = "xxx"; //在控制台-我的应用获取
//    private static final String file = "C:\\Users\\lihao\\Desktop\\luyin\\777.wav"; // 中文     resource\\iat\\16k_10.pcmprivate static File file = null;public static final int StatusFirstFrame = 0;public static final int StatusContinueFrame = 1;public static final int StatusLastFrame = 2;public static final Gson json = new Gson();Decoder decoder = new Decoder();// 开始时间private static Date dateBegin = new Date();// 结束时间private static Date dateEnd = new Date();private static final SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd HH:mm:ss.SSS");private static String result = "";/*** 连接* @param webSocket* @param response*/@Overridepublic void onOpen(WebSocket webSocket, Response response) {super.onOpen(webSocket, response);new Thread(()->{//连接成功，开始发送数据int frameSize = 1280; //每一帧音频的大小,建议每 40ms 发送 122Bint intervel = 40;int status = 0;  // 音频的状态try (FileInputStream fs = new FileInputStream(file)) {byte[] buffer = new byte[frameSize];// 发送音频end:while (true) {int len = fs.read(buffer);if (len == -1) {status = StatusLastFrame;  //文件读完，改变status 为 2}switch (status) {case StatusFirstFrame:   // 第一帧音频status = 0JsonObject frame = new JsonObject();JsonObject business = new JsonObject();  //第一帧必须发送JsonObject common = new JsonObject();  //第一帧必须发送JsonObject data = new JsonObject();  //每一帧都要发送// 填充commoncommon.addProperty("app_id", appid);//填充businessbusiness.addProperty("language", "zh_cn");//business.addProperty("language", "en_us");//英文//business.addProperty("language", "ja_jp");//日语，在控制台可添加试用或购买//business.addProperty("language", "ko_kr");//韩语，在控制台可添加试用或购买//business.addProperty("language", "ru-ru");//俄语，在控制台可添加试用或购买business.addProperty("domain", "iat");business.addProperty("accent", "mandarin");//中文方言请在控制台添加试用，添加后即展示相应参数值//business.addProperty("nunum", 0);//business.addProperty("ptt", 0);//标点符号//business.addProperty("rlang", "zh-hk"); // zh-cn :简体中文（默认值）zh-hk :繁体香港(若未授权不生效，在控制台可免费开通)//business.addProperty("vinfo", 1);business.addProperty("dwa", "wpgs");//动态修正(若未授权不生效，在控制台可免费开通)//business.addProperty("nbest", 5);// 句子多候选(若未授权不生效，在控制台可免费开通)//business.addProperty("wbest", 3);// 词级多候选(若未授权不生效，在控制台可免费开通)//填充datadata.addProperty("status", StatusFirstFrame);data.addProperty("format", "audio/L16;rate=16000");data.addProperty("encoding", "raw");data.addProperty("audio", Base64.getEncoder().encodeToString(Arrays.copyOf(buffer, len)));//填充frameframe.add("common", common);frame.add("business", business);frame.add("data", data);webSocket.send(frame.toString());status = StatusContinueFrame;  // 发送完第一帧改变status 为 1break;case StatusContinueFrame:  //中间帧status = 1JsonObject frame1 = new JsonObject();JsonObject data1 = new JsonObject();data1.addProperty("status", StatusContinueFrame);data1.addProperty("format", "audio/L16;rate=16000");data1.addProperty("encoding", "raw");data1.addProperty("audio", Base64.getEncoder().encodeToString(Arrays.copyOf(buffer, len)));frame1.add("data", data1);webSocket.send(frame1.toString());// System.out.println("send continue");break;case StatusLastFrame:    // 最后一帧音频status = 2 ，标志音频发送结束JsonObject frame2 = new JsonObject();JsonObject data2 = new JsonObject();data2.addProperty("status", StatusLastFrame);data2.addProperty("audio", "");data2.addProperty("format", "audio/L16;rate=16000");data2.addProperty("encoding", "raw");frame2.add("data", data2);webSocket.send(frame2.toString());System.out.println("sendlast");break end;}Thread.sleep(intervel); //模拟音频采样延时}System.out.println("all data is send");} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {e.printStackTrace();}}).start();}/*** 结果* @param webSocket* @param text*/@Overridepublic void onMessage(WebSocket webSocket, String text) {super.onMessage(webSocket, text);//System.out.println(text);ResponseData resp = json.fromJson(text, ResponseData.class);if (resp != null) {if (resp.getCode() != 0) {System.out.println( "code=>" + resp.getCode() + " error=>" + resp.getMessage() + " sid=" + resp.getSid());System.out.println( "错误码查询链接：https://www.xfyun.cn/document/error-code");return;}if (resp.getData() != null) {if (resp.getData().getResult() != null) {Text te = resp.getData().getResult().getText();//System.out.println(te.toString());try {decoder.decode(te);System.out.println("中间识别结果 ==》" + decoder.toString());} catch (Exception e) {e.printStackTrace();}}if (resp.getData().getStatus() == 2) {// todo  resp.data.status ==2 说明数据全部返回完毕，可以关闭连接，释放资源System.out.println("session end ");dateEnd = new Date();System.out.println(sdf.format(dateBegin) + "开始");System.out.println(sdf.format(dateEnd) + "结束");System.out.println("耗时:" + (dateEnd.getTime() - dateBegin.getTime()) + "ms");System.out.println("最终识别结果 ==》" + decoder.toString());System.out.println("本次识别sid ==》" + resp.getSid());result = decoder.toString();System.out.println("resultweb--->"+result);decoder.discard();webSocket.close(1000, "");} else {// todo 根据返回的数据处理}}}}/*** 异常* @param webSocket* @param t* @param response*/@Overridepublic void onFailure(WebSocket webSocket, Throwable t, Response response) {super.onFailure(webSocket, t, response);try {if (null != response) {int code = response.code();System.out.println("onFailure code:" + code);System.out.println("onFailure body:" + response.body().string());if (101 != code) {System.out.println("connection failed");System.exit(0);}}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/*** main方法* @param args* @throws Exception*/public static void main(String[] args) throws Exception {String authUrl = getAuthUrl(hostUrl, apiKey, apiSecret);OkHttpClient client = new OkHttpClient.Builder().build();String url = authUrl.toString().replace("http://", "ws://").replace("https://", "wss://");Request request = new Request.Builder().url(url).build();WebSocket webSocket = client.newWebSocket(request, new WebIATWS());}/*** 鉴权URL* @param hostUrl* @param apiKey* @param apiSecret* @return* @throws Exception*/public static String getAuthUrl(String hostUrl, String apiKey, String apiSecret) throws Exception {URL url = new URL(hostUrl);SimpleDateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);format.setTimeZone(TimeZone.getTimeZone("GMT"));String date = format.format(new Date());StringBuilder builder = new StringBuilder("host: ").append(url.getHost()).append("\n").//append("date: ").append(date).append("\n").//append("GET ").append(url.getPath()).append(" HTTP/1.1");System.out.println(builder);Charset charset = Charset.forName("UTF-8");Mac mac = Mac.getInstance("hmacsha256");SecretKeySpec spec = new SecretKeySpec(apiSecret.getBytes(charset), "hmacsha256");mac.init(spec);byte[] hexDigits = mac.doFinal(builder.toString().getBytes(charset));String sha = Base64.getEncoder().encodeToString(hexDigits);//System.out.println(sha);String authorization = String.format("api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"", apiKey, "hmac-sha256", "host date request-line", sha);System.out.println(authorization);HttpUrl httpUrl = HttpUrl.parse("https://" + url.getHost() + url.getPath()).newBuilder().//addQueryParameter("authorization", Base64.getEncoder().encodeToString(authorization.getBytes(charset))).//addQueryParameter("date", date).//addQueryParameter("host", url.getHost()).//build();return httpUrl.toString();}public static class ResponseData {private int code;private String message;private String sid;private Data data;public int getCode() {return code;}public String getMessage() {return this.message;}public String getSid() {return sid;}public Data getData() {return data;}}public static class Data {private int status;private Result result;public int getStatus() {return status;}public Result getResult() {return result;}}public static class Result {int bg;int ed;String pgs;int[] rg;int sn;Ws[] ws;boolean ls;JsonObject vad;public Text getText() {Text text = new Text();StringBuilder sb = new StringBuilder();for (Ws ws : this.ws) {sb.append(ws.cw[0].w);}text.sn = this.sn;text.text = sb.toString();text.sn = this.sn;text.rg = this.rg;text.pgs = this.pgs;text.bg = this.bg;text.ed = this.ed;text.ls = this.ls;text.vad = this.vad==null ? null : this.vad;return text;}}public static class Ws {Cw[] cw;int bg;int ed;}public static class Cw {int sc;String w;}public static class Text {int sn;int bg;int ed;String text;String pgs;int[] rg;boolean deleted;boolean ls;JsonObject vad;@Overridepublic String toString() {return "Text{" +"bg=" + bg +", ed=" + ed +", ls=" + ls +", sn=" + sn +", text='" + text + '\'' +", pgs=" + pgs +", rg=" + Arrays.toString(rg) +", deleted=" + deleted +", vad=" + (vad==null ? "null" : vad.getAsJsonArray("ws").toString()) +'}';}}//解析返回数据，仅供参考public static class Decoder {private Text[] texts;private int defc = 10;public Decoder() {this.texts = new Text[this.defc];}public synchronized void decode(Text text) {if (text.sn >= this.defc) {this.resize();}if ("rpl".equals(text.pgs)) {for (int i = text.rg[0]; i <= text.rg[1]; i++) {this.texts[i].deleted = true;}}this.texts[text.sn] = text;}public String toString() {StringBuilder sb = new StringBuilder();for (Text t : this.texts) {if (t != null && !t.deleted) {sb.append(t.text);}}return sb.toString();}public void resize() {int oc = this.defc;this.defc <<= 1;Text[] old = this.texts;this.texts = new Text[this.defc];for (int i = 0; i < oc; i++) {this.texts[i] = old[i];}}public void discard(){for(int i=0;i<this.texts.length;i++){this.texts[i]= null;}}}public static String sendStart (File file_keywords) throws Exception {file = file_keywords;// 构建鉴权urlString authUrl = getAuthUrl(hostUrl, apiKey, apiSecret);OkHttpClient client = new OkHttpClient.Builder().build();//将url中的 schema http://和https://分别替换为ws:// 和 wss://String url = authUrl.toString().replace("http://", "ws://").replace("https://", "wss://");Request request = new Request.Builder().url(url).build();// System.out.println(client.newCall(request).execute());WebSocket webSocket = client.newWebSocket(request, new WebIATWS());Thread.sleep(5000);return result;}/*** MultipartFile  转  File* @param multipartFile* @return*/public static File transferToFile(MultipartFile multipartFile) {//        选择用缓冲区来实现这个转换即使用java 创建的临时文件 使用 MultipartFile.transferto()方法 。File file = null;try {String originalFilename = multipartFile.getOriginalFilename();if ("blob".equals(originalFilename)) {file = File.createTempFile(UUID.randomUUID().toString(), ".wav");}multipartFile.transferTo(file);file.deleteOnExit();} catch (IOException e) {e.printStackTrace();}return file;}}

好啦，到此就结束啦，有疑问再沟通

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