Qt 图片转为base64编码
找到:https://forum.qt.io/topic/72282/save-qimage-to-base64-string
我自己稍微改了下
QByteArray toBase64(QString imgPath) {
QImage image(imgPath);
QByteArray ba;
QBuffer buf(&ba);
image.save(&buf, "png");
QByteArray hexed = ba.toBase64();
buf.close();
return hexed;
}