QRegExp question for JSON

[marcvanriet]

Hi,

I'm trying to use a QRegExp as a quick way to find a value in a simple JSON string. Unfortunately I'm not so familiar with regular expressions and the examples I find on the internet don't seem to work with QRegExp.

I have a message like below and I want the 'dev' field :
{"dev":"RSNGSM32", "cmd":"setVoltage", "voltage":7.23}

I tried this :

QRegExp reFindName( "\"dev\":\"(.+?)\"" );
if( reFindName.indexIn( sMessage ) >= 0 )  
{
    QString sEqName = reFindName.cap(0);           
    qDebug() << "device name is" << sEqName;
}

QRegExp reFindName( "\"dev\":\"(.+?)\"" );
if( reFindName.indexIn( sMessage ) >= 0 )  
{
    QString sEqName = reFindName.cap(0);           
    qDebug() << "device name is" << sEqName;
}

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But it doesn't work. I read the documentation on QRegExp and fooled around with the expression, but got nothing that works.

Any advice would be appreciated.
Best regards,
Marc