彥霖 實驗筆記

#include<QCoreApplication>

#include<QDebug>

#include<QtNetwork/QNetworkAccessManager>

#include<QtNetwork/QNetworkRequest>

#include<QtNetwork/QNetworkReply>

#include<QUrl>

#include<QUrlQuery>

#include<QFile>

void sendRequest(){

    QEventLoop eventLoop;

    QNetworkAccessManager mgr;

    QObject::connect(&mgr,SIGNAL(finished(QNetworkReply*)),&eventLoop,SLOT(quit()));

    QNetworkRequest req(QUrl(QString("http://i39.tinypic.com/1yn3wx.jpg")));

    QNetworkReply * reply = mgr.get(req);

    eventLoop.exec();

    if(reply->error()==QNetworkReply::NoError){

        //連接成功

        qDebug()<<"Download...";

        QFile * file = new QFile("C:/Test/downloaded.jpg");

        if(file->open(QFile::Append)) {

            file->write(reply->readAll());

            file->flush();

            file->close();

        }

        delete file;

        qDebug() << "ok";

    }else{

        //連接失敗

        qDebug() << "Failure" <<reply -> errorString();

    }

    delete reply;

}

intmain(int argc, char * argv[]) {

    QCoreApplication a(argc,argv);

    sendRequest();

    return a.exec();

}