QFile文件操作-QT

#include <QCoreApplication>
#include<QFile>
#include<QString>
#include<QDebug>
#include<QTextStream>

void Write(QString Filename)
{
    QFile mFile(Filename);

    if(!mFile.open(QFile::WriteOnly | QFile::Text))
    {
        qDebug()<<"Could not open file for writing.";
        return;
    }

    QTextStream out(&mFile);
    out<<"Hello Boatlet hello cat";
    mFile.flush();

    mFile.close();

}

void Read(QString Filename)
{
    QFile mFile(Filename);

    if(!mFile.open(QFile::ReadOnly | QFile::Text))
    {
        qDebug()<<"Could not open file for reading.";
        return;
    }

    QTextStream in(&mFile);
    QString mText = in.readAll();
    qDebug() <<mText;

    mFile.close();
}

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

    //目录存在时，可以创建文件成功，按照"w"操作
    QString mFilename = "E:/a/a01/01.txt";

    Write(mFilename);
    Read(mFilename);

　　//Read("E:/test/QT/lesson001/Files/Files.pro");

return a.exec(); }