彥霖 實驗筆記

常用參數:

    QIODevice::ReadWrite
    QIODevice::ReadOnly
    QIODevice::WriteOnly
    QIODevice::Text
    QIODevice::Append

檔案讀取：

#include<QCoreApplication>

#include<QDebug>

#include<QFile>

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

    QCoreApplication a(argc,argv);

    QFile file("C:/Test/Doc.txt");

    if(file.open(QIODevice::ReadOnly)){

        QTextStream in(&file);

        in.setCodec("UTF-8");

        while(!in.atEnd()){

            QString line=in.readLine();

            qDebug()<<line.toStdString().data();

        }

        file.close();

    }

    return a.exec();

}

//------------------------------------------------------------------------------------

檔案寫入：

#include<QCoreApplication>

#include<QDebug>

#include<QFile>

intmain(intargc,char*argv[]){

    QCoreApplicationa(argc,argv);

    QFilefile("C:/Test/Doc.txt");

    if(file.open(QIODevice::WriteOnly|QIODevice::Text)){

        QTextStreamstreamFileOut(&file);

        streamFileOut.setCodec("UTF-8");

        streamFileOut<<QString("安安..萌...").toUtf8();

        streamFileOut<<QString::fromUtf8("安安..萌...");

        streamFileOut<<QLatin1String("安安..萌...");

        streamFileOut<<QStringLiteral("安安..萌...");

        streamFileOut.flush();

    }

    file.close();

    return a.exec();

}