从C＃Web服务将字节数组检索到Qt

Question

I use webservice written in c# that exposes bytearray of audio file (mp3 file) that is stored in database (using entity framework).

When I retrieve it in c# and save it into file using File.WriteAllBytes() I can listen to audio (file's size is 10kB).

I need to do the same with Qt. I parse the xml and save audio byte array to QByteArray like this:

QByteArray bytes = readValue().toUtf8(); 

where readValue() is QStringRef and then I save it to file

qint64 bytesWritten = file.write(bytes);

File hes 14kB then and I suppose that there is some format problem but not sure where.

Answer 1

I solved this problem. In webservice I return byte array converter to hex string

string hex = BitConverter.ToString(ba);
string hexString = hex.Replace("-", "");

then in Qt I parse data

QByteArray bytes = QByteArray::fromHex(readValue().toString().toLatin1()));

and save it to file

qint64 bytesWritten = file.write(bytes);