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(); }