Qt本地时间与UTC时间转换
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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: "<<time.toString(fromat);
qDebug()<<"localTime: "<<localTime.toString(fromat);
qDebug()<<"utcTime: "<<utcTime.toString(fromat);运行结果：
time: "2020-10-30 08:42:58"
localTime: "2020-10-30 16:42:58"
utcTime: "2020-10-30 00:42:58"全部评论 (0)
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