QT 使用 OpenSSL 实现字节数组转十六进制字符串

QString bytesToHexString(const QByteArray &sources) { if (sources.isEmpty()) return QString(); QString result; for (int i = 0; i < sources.size(); ++i) { QString hex = QString::number(static_cast(sources[i]), 16); if (hex.size() < 2) { hex.prepend('0'); } result.append(hex); } return result; }