概念

Qt中有QNetworkAccessManager、QHttpMultiPart、QJsonArray、QHttpPart，可以实现发送http数据包，其中QNetworkAccessManager中有个函数，可以实现Get或者Post方法。

演示

程序运行截图如下：

加入图片后，点击提交，可活得face++返回的json数据，其中就有一个confidence值，这个值就是可信度！

比如下面这两种刘德华的照片如下图所示：

如果是两张不同的图片

源码

程序结构如下：

widget.ui如下：

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QHttpPart>QT_BEGIN_NAMESPACE
class QNetworkAccessManager;
class QNetworkReply;
QT_END_NAMESPACEnamespace Ui {
class Widget;
}class Widget : public QWidget
{Q_OBJECTpublic:explicit Widget(QWidget *parent = 0);~Widget();protected:void loadLeftLabel();void loadRightLabel();void mouseReleaseEvent(QMouseEvent *event) Q_DECL_OVERRIDE;QHttpPart setHttpPart(QByteArray body, QVariant value);QHttpPart imageHttpPart(const QString &fileName, QVariant value);protected slots:void finished(QNetworkReply *reply);void btnClicked();private:Ui::Widget *ui;QString m_leftFileName;QString m_rightFileName;QNetworkAccessManager *m_manager;
};#endif // WIDGET_H

main.cpp

#include "widget.h"
#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();return a.exec();
}

widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include <QDebug>
#include <QMouseEvent>
#include <QNetworkReply>
#include <QNetworkAccessManager>
#include <QFileDialog>
#include <QByteArray>
#include <QHttpMultiPart>
#include <QJsonArray>
#include <QMap>
#include <QJsonDocument>
#include <QJsonObject>
#include <QMessageBox>Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget)
{ui->setupUi(this);this->setWindowTitle("CSDN IT1995");m_manager = new QNetworkAccessManager(this);connect(ui->okPushButton, SIGNAL(clicked(bool)), this, SLOT(btnClicked()));connect(m_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(finished(QNetworkReply*)));\
}Widget::~Widget()
{delete ui;
}void Widget::loadLeftLabel()
{QString fileName = QFileDialog::getOpenFileName(this, "选择图片", qApp->applicationDirPath(), "Image Files (*.png *.jpg *.bmp)");if(!fileName.isEmpty()){m_leftFileName = fileName;ui->face1Label->clear();ui->face1Label->setPixmap(QPixmap(fileName));return;}ui->face1Label->clear();ui->face1Label->setText("face1");m_leftFileName = "";
}void Widget::loadRightLabel()
{QString fileName = QFileDialog::getOpenFileName(this, "选择图片", qApp->applicationDirPath(), "Image Files (*.png *.jpg *.bmp)");if(!fileName.isEmpty()){m_rightFileName = fileName;ui->face2Label->clear();ui->face2Label->setPixmap(QPixmap(fileName));return;}ui->face2Label->clear();ui->face2Label->setText("face1");m_rightFileName = "";
}void Widget::mouseReleaseEvent(QMouseEvent *event)
{int currentX = event->pos().x();int currentY = event->pos().y();int leftPicStartX = ui->face1Label->pos().x();int leftPicEndX = leftPicStartX + ui->face1Label->width();int leftPicStartY = ui->face1Label->pos().y();int leftPicEndY = leftPicStartY + ui->face1Label->height();int rightPicStartX = ui->face2Label->pos().x();int rightPicEndX = rightPicStartX + ui->face2Label->width();int rightPicStartY = ui->face2Label->pos().y();int rightPicEndY = rightPicStartY + ui->face2Label->height();//left Pictureif((leftPicStartX < currentX) && (leftPicEndX > currentX)&& (leftPicStartY < currentY) && (leftPicEndY > currentY)){qDebug() << "left Picture";loadLeftLabel();}//right Pictureif((rightPicStartX < currentX) && (rightPicEndX > currentX)&& (rightPicStartY < currentY) && (rightPicEndY > currentY)){qDebug() << "right Picture";loadRightLabel();}QWidget::mouseReleaseEvent(event);
}QHttpPart Widget::setHttpPart(QByteArray body, QVariant value)
{QHttpPart part;part.setHeader(QNetworkRequest::ContentDispositionHeader, value);part.setBody(body);return part;
}QHttpPart Widget::imageHttpPart(const QString &fileName, QVariant value)
{QHttpPart imagePart;imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/jpeg"));imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, value);QByteArray fileFlow;QFile file(fileName);if(file.open(QIODevice::ReadOnly)){fileFlow = file.readAll();imagePart.setBody(fileFlow.toBase64());}return imagePart;
}void Widget::finished(QNetworkReply *reply)
{QByteArray responseData = reply->readAll();QMap<QString, QVariant> map;QJsonDocument document;map = document.fromJson(responseData).toVariant().toMap();qDebug() << responseData;float confidence = map.value("confidence").toFloat();QMessageBox::information(this, "tip", "The confidence is " + QString::number(confidence));
}void Widget::btnClicked()
{QString apiKey = "XqIypFbRHDRJ2LmBfMwO531E8wnZ0FVm";QString apiSecret = "TBS_8r7czQ3_ZLmox-jv9E3tOLyjIjop";QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);QHttpPart keyPart = setHttpPart(apiKey.toLatin1(), QVariant("form-data; name=\"api_key\""));multiPart->append(keyPart);QHttpPart secret = setHttpPart(apiSecret.toLatin1(), QVariant("form-data; name=\"api_secret\""));multiPart->append(secret);QHttpPart faceImage1;faceImage1 = imageHttpPart(m_leftFileName, "form-data; name=\"image_base64_1\"");multiPart->append(faceImage1);QHttpPart faceImage2;faceImage2 = imageHttpPart(m_rightFileName, "form-data; name=\"image_base64_2\"");multiPart->append(faceImage2);QUrl url("https://api-cn.faceplusplus.com/facepp/v3/compare");QNetworkRequest request;request.setUrl(url);QNetworkReply *reply = m_manager->post(request, multiPart);multiPart->setParent(reply);
}

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Qt调用face++的http接口，实现人脸对比

概念

演示

源码

Qt调用face++的http接口，实现人脸对比相关推荐

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