基本概念

这里来简单介绍下百度的REST API文档，首先是获取Access Token

获取到了后，再发送请求，进行语音识别。

这里我采用Raw方式上传

这个就是百度AI语音识别服务的API，

这里我自己录了一段话：

注意他的格式和参数

代码与实例

程序运行截图如下：

这个识别还是比较准确的。

源代码如下：

#include <QCoreApplication>
#include <QNetworkReply>
#include <QNetworkAccessManager>
#include <QMap>
#include <QJsonDocument>
#include <QFile>
#include <QEventLoop>
#include <QObject>


const QString AppID = "XXXXXXXXXXXX";
const QString APIKey = "XXXXXXXXXXXX";
const QString SecretKey = "XXXXXXXXXXXX";
static QString AccessToken = ""; //程序中获取

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

QNetworkAccessManager *manager = new QNetworkAccessManager;
QNetworkRequest *request = new QNetworkRequest;

//获取Access Token
QString tokenUrlStr = "https://aip.baidubce.com/oauth/2.0/token";
request->setUrl(tokenUrlStr);
QString tokenBody = QString("grant_type=client_credentials&client_id=%1&client_secret=%2").arg(APIKey).arg(SecretKey);
QNetworkReply *reply = manager->post(*request, tokenBody.toUtf8());

QEventLoop loop;
QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();

QMap<QString, QVariant> map = QJsonDocument().fromJson(reply->readAll()).toVariant().toMap();
AccessToken = map.find("refresh_token").value().toString();

qDebug() << "get AccessToken finised! The AccessToken is : " << AccessToken;

QString requestUrl = QString("http://vop.baidu.com/server_api?cuid=123456&token=%1").arg(AccessToken);
request->setUrl(requestUrl);
request->setHeader(QNetworkRequest::ContentTypeHeader, "audio/wav;rate=16000");
request->setRawHeader("format", "wav");

QFile file("E:\\Qt2019\\voiceDemo\\test3.wav");
if(!file.open(QIODevice::ReadOnly)){

qDebug() << "open wav filed!";
return 0;
}
reply = manager->post(*request, file.readAll());
file.close();

QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();

qDebug() << QString::fromUtf8(reply->readAll());


delete request;
delete manager;

return a.exec();
}

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