Qt txt文件读写

读：

void MainWindow::ReadTxt(QString filePath)
{
    QFile file(filePath);
    if (file.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        while (!file.atEnd())
        {
            QByteArray line = file.readLine();
            QString str(line);
        }

        file.close();
    }
}

 

写：

void WriteTxt(QString filePath, QString txt)
{
    QFile file(filePath);
    if (file.open(QIODevice::ReadWrite | QIODevice::Text | QIODevice::Append))
    {
        QTextStream stream(&file);
        stream << txt << "\n";
        file.close();
    }
}