#include <QtCore>#include <iostream>#include "spider.h"using namespace std;int main(int argc, char *argv[]){    QCoreApplication app(argc, argv);    QStringList args = app.arguments();    if (args.count() != 2) {        cerr << "Usage: spider url" << endl             << "Example:" << endl             << "    spider ftp://ftp.trolltech.com/freebies/leafnode"             << endl;        return 1;    }    Spider spider;    if (!spider.getDirectory(QUrl(args[1])))        return 1;    QObject::connect(&spider, SIGNAL(done()), &app, SLOT(quit()));    return app.exec();}