[SOLVED] Pass a binary file in Json

[Nando]

Hi,

is there a way to transport binary data (QByteArray / File content) via Json?
I did not find any methods to pass a QByteArray to a Json object....

Any ideas?

Greetings
Nando

[mrjj]

You should decode/encode it:

#include <QCoreApplication>
#include <QString>
#include <QDebug>
#include <QByteArray>
 
QString base64_encode(QString string);
QString base64_decode(QString string);
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    QString srcString = "Hello";
    QString encodedString = base64_encode(srcString);
    QString decodedString = base64_decode(encodedString);
 
    qDebug() << "Encoded string is" << encodedString;
    qDebug() << "Decoded string is" << decodedString;
    return a.exec();
}
 
QString base64_encode(QString string){
    QByteArray ba;
    ba.append(string);
    return ba.toBase64();
}
 
QString base64_decode(QString string){
    QByteArray ba;
    ba.append(string);
    return QByteArray::fromBase64(ba);
}

from
http://karanbalkar.com/2014/02/base64-encoding-and-decoding-using-qt-5-framework/
site is really slow loading.

edit:
to use it with binary , just load it to QByteArray directly

QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) return;
QByteArray blob = file.readAll();

[Nando]

Hi,

thank you for your example.

i tried it like this and now it is working fine, thank you very much!

CLIENT:
m_jsonObject["data"] = QString(data.toBase64());

SERVER:
QByteArray ba;
ba.append(json["data"].toString());
QByteArray data = QByteArray::fromBase64(ba);

It works fine :)

Greetings

[mrjj]

This post is deleted!

[mrjj]

This post is deleted!