QT生成时间截

###Qt生成时间截 （网络访问经常需要）

生成时间截 毫秒/秒 相对于1970-01-01T00:00:00.000

QDateTime time = QDateTime::currentDateTime();    qint64 timestamp_msec = time.toMSecsSinceEpoch();//毫秒数    uint timestamp_sec = time.toTime_t();//秒数    qDebug()<<"\n timestamp_sec seconds that have passed since 1970-01-01T00:00:00.000 \n"<<timestamp_sec;    qDebug()<<"\n timestamp milliseconds that have passed since 1970-01-01T00:00:00.000 \n"<<timestamp_msec;