qt5 上传图片到http服务器

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qt5 上传图片到http服务器，亲测可以用，qt5.8+vs2015，直接上码;

头文件：

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#ifndef UPDATEPICTEST_H #define UPDATEPICTEST_H   #include <QtWidgets/QMainWindow> #include "ui_updatepictest.h"   #include <QNetworkAccessManager> #include <QNetworkRequest> #include <QNetworkReply> #include <QHttpMultiPart> #include <QFile> #include <QDataStream> #include <QTextCodec>   class  UpdatePicTest :  public  QMainWindow {      Q_OBJECT   public :      UpdatePicTest(QWidget *parent = 0);      ~UpdatePicTest();   private  slots:      void  slot_requestFinished();      void  on_pushButton_clicked();      void  upLoadError(QNetworkReply::NetworkError code);      void  uploadProcess(qint64 bytesReceived, qint64 bytesTotal);   private :      QNetworkAccessManager * m_pNetWorkManager = NULL;        void  testUpload();        QNetworkReply *reply;       private :      Ui::UpdatePicTestClass ui; };   #endif // UPDATEPICTEST_H

　　cpp，

1	http: //ip:port改为对应的服务器和端口号

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#include "updatepictest.h" #include <QDebug>   UpdatePicTest::UpdatePicTest(QWidget *parent)      : QMainWindow(parent) {      ui.setupUi( this );        m_pNetWorkManager =  new  QNetworkAccessManager(); }   UpdatePicTest::~UpdatePicTest() {   }   void  UpdatePicTest::slot_requestFinished() {      QByteArray resultContent = reply->readAll();      QTextCodec* pCodec = QTextCodec::codecForName( "UTF-8" );      QString strResult = pCodec->toUnicode(resultContent);      int  nHttpCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt(); //http返回码        ui.textEdit->setPlainText(strResult);      ui.edt_code->setText(QString( "%1" ).arg(nHttpCode));  }   void  UpdatePicTest::on_pushButton_clicked() {      testUpload(); }   void  UpdatePicTest::upLoadError(QNetworkReply::NetworkError code) {      qDebug() << code; }   void  UpdatePicTest::uploadProcess(qint64 bytesReceived, qint64 bytesTotal) {      qDebug() << bytesReceived << bytesTotal; }   void  UpdatePicTest::testUpload() {      QString path = ui.lineEdit->text().trimmed();      QHttpMultiPart *multiPart =  new  QHttpMultiPart(QHttpMultiPart::FormDataType);      QHttpPart imagePart;      imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant( "image/png" ));      imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QString( "form-data; name=\"%1\"; filename=\"%2\"" ).arg( "offline.png" ).arg(path));      QFile *file =  new  QFile(path);      file->open(QIODevice::ReadOnly);      imagePart.setBodyDevice(file);      imagePart.setBodyDevice(file);      file->setParent(multiPart);      multiPart->append(imagePart);        QNetworkRequest request(QUrl( "http://ip:port" ));        reply = m_pNetWorkManager->post(request, multiPart);      multiPart->setParent(reply);        connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),  this , SLOT(upLoadError(QNetworkReply::NetworkError)));      connect(reply, SIGNAL(downloadProgress(qint64, qint64)),  this , SLOT(uploadProcess(qint64, qint64)));      connect(reply, SIGNAL(finished()),  this , SLOT(slot_requestFinished()));   }