Qt 的QNetworkAccessManager 出问题了

#include <QUrl>

#include <QtNetwork/QNetworkReply>

#include <QtNetwork/QNetworkRequest>

#include <QtNetwork/QNetworkAccessManager>



#include <QCoreApplication>

#include <QString>

#include <QDebug>



class NetworkTest:public QObject {

    Q_OBJECT

public:



    void run() {

        //QNetworkRequest * request = new QNetworkRequest();

        //QNetworkReply * reply = new QNetworkReply();

        QNetworkAccessManager * manager = new QNetworkAccessManager(this);

        QNetworkReply * reply;

        QUrl url("http://www.forum.nokia.wiki");

        QNetworkRequest req;

        req.setUrl(url);



        QObject::connect( manager, manager->finished, this->finishedSlot );





        reply = manager->get(req);

    }





    //public Q_SLOTS:

    void finishedSlot(QNetworkReply * reply) {

        qDebug() << reply->readAll() <<endl;

    }





};





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

    QCoreApplication a(argc, argv);



    NetworkTest * net = new NetworkTest();

    net->run();



    return a.exec();

}

第23行：错误:no matching function for call to 'NetworkTest::connect(QNetworkAccessManager*&, <unresolved overloaded function type>, <unresolved overloaded function type>)'
第23行改成：

        connect(manager, SIGNAL(finished(QNetworkReply*)),this,SLOT(finishedSlot(QNetworkReply*)));

之后，错误变成：