Qt本地时间与UTC时间转换

1，主要用到下面这个函数：

void QDateTime::setTimeSpec(Qt::TimeSpec spec)

Sets the time specification used in this datetime to spec. The datetime will refer to a different point in time.
If spec is Qt::OffsetFromUTC then the timeSpec() will be set to Qt::UTC, i.e. an effective offset of 0.
If spec is Qt::TimeZone then the spec will be set to Qt::LocalTime, i.e. the current system time zone.

QString strTime = "2020-10-30 08:42:58";QString fromat = "yyyy-MM-dd hh:mm:ss";QDateTime time = QDateTime::fromString(strTime, fromat);//如果，strTime是utc时间，转换为本地时间time.setTimeSpec(Qt::UTC);QDateTime localTime = time.toLocalTime();//如果，strTime是本地时间，转换为utc时间time.setTimeSpec(Qt::LocalTime);QDateTime utcTime = time.toUTC();qDebug()<<"time: "<

运行结果：