QT 將char* 轉16進制 字符串

直接貼代碼:

/*
* @param [int]str 字符串   
* @param [int]size 字符串長度  
* @param [out]qstring QString 引用
*/
QString bytesToHex( char* str, int size, QString &qstring)
{
	for (int i = 0; i < size; i++)
	{
		char tempOne = (unsigned char)str[i] >> 4;

		if (tempOne >= 0x0a)
		{
			tempOne = 0x41 - 0x0A;
		}
		else
		{
			tempOne = tempOne + 0x30;
		}

		char tempTwo = (unsigned char)str[i] & 0xF;

		if (tempTwo >= 0x0a)
		{
			tempTwo = tempTwo + 0x41 - 0x0a;
		}
		else
		{
			tempTwo = tempTwo + 0x30;
		}
		qstring.append(tempOne);
		qstring.append(tempTwo);

		if (i == size - 1)
		{
			continue;
		}

		qstring.append(" ");
	}
	//qDebug() << "qstring:" << qstring;
	return qstring;

}

 

char* str = "this is string";
QString qstring ;
qDebug()<<"string:" << bytesToHex(str , strlen(str), qstring);

輸出結果爲:74 68 69 73 20 69 73 20 73 74 72 69 6E 67