//圖片轉(zhuǎn)base64
QByteArray carNum::imageToBase64(QString fileName)
{
    //創(chuàng)建一個(gè)QImage對(duì)象img，并使用傳入的文件名fileName來(lái)初始化它
        QImage img(fileName);
        //創(chuàng)建一個(gè)空的QByteArray對(duì)象ba，用于存儲(chǔ)圖片的二進(jìn)制數(shù)據(jù)
        QByteArray ba;
        //用QByteArray構(gòu)造QBuffer
        //創(chuàng)建一個(gè)QBuffer對(duì)象buf，并將之前創(chuàng)建的QByteArray對(duì)象ba的地址傳遞給它。
        //這樣，我們可以將數(shù)據(jù)寫(xiě)入這個(gè)緩沖區(qū)
        QBuffer buf(&ba);
        //打開(kāi)緩沖區(qū)buf以進(jìn)行寫(xiě)操作。這是為了準(zhǔn)備將圖片數(shù)據(jù)寫(xiě)入緩沖區(qū)
        buf.open(QIODevice::WriteOnly);
        //將圖片對(duì)象img保存到緩沖區(qū)buf中，使用JPG格式。
        //這樣，圖片的二進(jìn)制數(shù)據(jù)將被寫(xiě)入到之前創(chuàng)建的QByteArray對(duì)象中
        img.save(&buf,"JPG");//把img 寫(xiě)入QBuffer
        //將之前存儲(chǔ)的圖片二進(jìn)制數(shù)據(jù)轉(zhuǎn)換為Base64編碼的字符串，并存儲(chǔ)在新的QByteArray對(duì)象中
        QByteArray base64 = ba.toBase64();//不包含編碼頭
        //創(chuàng)建一個(gè)指向UTF-8編碼的文本編解碼器的指針。
        QTextCodec *codec = QTextCodec::codecForName("utf-8");
        //對(duì)Base64編碼的字符串進(jìn)行URL編碼
        //對(duì)圖片urlencode
        QByteArray imaData = codec->fromUnicode(base64).toPercentEncoding();
        return imaData;
  }

#include "carnum.h"
#include "ui_carnum.h"

carNum::carNum(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::carNum)
{
    ui->setupUi(this);
    ui->pushButton->setStyleSheet("QPushButton {"
                                  "    border: 2px solid #87CEEB;"
                                  "    border-radius: 15px;"
                                  "    background-color: qlineargradient(x1: 0, y1: 0, x2: 1, y2: 1,"
                                  "                                      stop: 0 #F0FFFF, stop: 1 #87CEEB);"
                                  "    font-weight: bold;"
                                  "    padding: 5px;"
                                  "}");
    ui->pushButton_2->setStyleSheet("QPushButton {"
                                  "    border: 2px solid #87CEEB;"
                                  "    border-radius: 15px;"
                                  "    background-color: qlineargradient(x1: 0, y1: 0, x2: 1, y2: 1,"
                                  "                                      stop: 0 #F0FFFF, stop: 1 #87CEEB);"
                                  "    font-weight: bold;"
                                  "    padding: 5px;"
                                  "}");
    ui->pushButton_2->setEnabled(false);
    manager=new QNetworkAccessManager(this);
    connect(manager,&QNetworkAccessManager::finished,this,&carNum::reply);
    speech= new QTextToSpeech(this);

}


carNum::~carNum()
{
    delete ui;
}
void carNum::on_pushButton_clicked()
{
    QFileDialog dialog(this);
    dialog.setDirectory("C:/Users/19811/Desktop/carPic");
    //設(shè)置打開(kāi)文件過(guò)濾屏蔽不需要的文件
    //QString filter = "車(chē)牌圖片類(lèi)型二(*.png;;*.jpg)";
    //獲取文件路徑
    QString fileName=dialog.getOpenFileName(this,NULL, QString(),NULL);
    if (!fileName.isEmpty()) {
        //設(shè)置label自適應(yīng)
        ui->label->setScaledContents(true);
        //設(shè)置label圖片
        ui->label->setPixmap(QPixmap(fileName));
        if(!fileName.isEmpty()){
            ui->pushButton_2->setEnabled(true);
        }
        //
        QString client_id="申請(qǐng)的AK";
        QString secret_id="申請(qǐng)的Sk";
        QString access_token="生成的token";
           // 打開(kāi)文件
        QFile file(fileName);
           if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
               // 讀取文件內(nèi)容
               //QTextStream in(&file);

               //QString picData=in.readAll();
               //qDebug()<<content;
               //創(chuàng)建網(wǎng)絡(luò)請(qǐng)求
               QNetworkRequest request;
               //baidu url需要三個(gè)參數(shù) client_id，secret_id，access_token；
               QString url=(QString("https://aip.baidubce.com/rest/2.0/ocr/v1/license_plate?"
                                    "client_id=%1&secret_id=%2&access_token=%3")
                                    .arg(client_id).arg(secret_id).arg(access_token)
                            );

               QByteArray body= imageToBase64(fileName);
               QByteArray imgData = "image=" + body;
               qDebug()<<body;
               //設(shè)置url
               request.setUrl(url);
               //設(shè)置頭
               request.setHeader(QNetworkRequest::ContentTypeHeader,QString("application/x-www-form-urlencoded"
                                                                            "Accept: application/json"
                                                                            ));
               manager->post(request,imgData);

               // 在文本編輯框中顯示文件內(nèi)容
           }
       }


}

void carNum::reply(QNetworkReply *workReply)
{
    QByteArray data =workReply->readAll();

    QJsonObject root=QJsonDocument::fromJson(data).object();
    //獲取key為words_result的對(duì)象
    QJsonValue val = root.value("words_result");

    //獲取key為number的值
    QString carId = val.toObject().value("number").toString();
    ui->lineEdit->setText(carId);
    int carNum=2000;
    QString num= QString::number(carNum);
    speech->say(QString("車(chē)牌號(hào)"+ carId)+"歡迎進(jìn)入"+"剩余車(chē)位"+ num);
    //speech->say(QString());
    qDebug()<<QString("welcome"+ carId);


}
//圖片轉(zhuǎn)base64
QByteArray carNum::imageToBase64(QString fileName)
{
    //創(chuàng)建一個(gè)QImage對(duì)象img，并使用傳入的文件名fileName來(lái)初始化它
        QImage img(fileName);
        //創(chuàng)建一個(gè)空的QByteArray對(duì)象ba，用于存儲(chǔ)圖片的二進(jìn)制數(shù)據(jù)
        QByteArray ba;
        //用QByteArray構(gòu)造QBuffer
        //創(chuàng)建一個(gè)QBuffer對(duì)象buf，并將之前創(chuàng)建的QByteArray對(duì)象ba的地址傳遞給它。
        //這樣，我們可以將數(shù)據(jù)寫(xiě)入這個(gè)緩沖區(qū)
        QBuffer buf(&ba);
        //打開(kāi)緩沖區(qū)buf以進(jìn)行寫(xiě)操作。這是為了準(zhǔn)備將圖片數(shù)據(jù)寫(xiě)入緩沖區(qū)
        buf.open(QIODevice::WriteOnly);
        //將圖片對(duì)象img保存到緩沖區(qū)buf中，使用JPG格式。
        //這樣，圖片的二進(jìn)制數(shù)據(jù)將被寫(xiě)入到之前創(chuàng)建的QByteArray對(duì)象中
        img.save(&buf,"JPG");//把img 寫(xiě)入QBuffer
        //將之前存儲(chǔ)的圖片二進(jìn)制數(shù)據(jù)轉(zhuǎn)換為Base64編碼的字符串，并存儲(chǔ)在新的QByteArray對(duì)象中
        QByteArray base64 = ba.toBase64();//不包含編碼頭
        //創(chuàng)建一個(gè)指向UTF-8編碼的文本編解碼器的指針。
        QTextCodec *codec = QTextCodec::codecForName("utf-8");
        //對(duì)Base64編碼的字符串進(jìn)行URL編碼
        //對(duì)圖片urlencode
        QByteArray imaData = codec->fromUnicode(base64).toPercentEncoding();
        return imaData;
  }