//读文件

　　QFile file("E:\\Corner\\Desktop\\info.txt");

    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)) {

        qDebug()<<"Can't open the file!"<<endl;

    }

    QList <QStringList> station_info;

    QTextStream in(&file);

    QString line;

    while(!in.atEnd()){

        line = in.readLine();//读取一行,还有读取所有readAll();

        QStringList list = line.split(",");

        station_info.push_back(list);

    }

    file.close();

//写文件

　　QFile fileout("E:\\station_route.txt");

    if(!fileout.open(QIODevice::WriteOnly | QIODevice::Text))

    {

        qDebug() << "Open failed";

    }

    QTextStream txtOutput(&fileout);

    for(int i = 0; i != station_route.size();i++){

        txtOutput << station_route.at(i).join(",") << "\n";

    }