1、QString转换成十六进制
1 void ConvertQStringToHex(const QString &str,const QByteArray& byte)
2 {
3 int hexData,lowhexData;
4 int hexdataLen=0;
5 int len = str.length();
6 byte.resize(len/2);
7 char lstr,hstr;
8 for(int i=0;i<len;)
9 {
10 hstr = str[i].toLatin1();
11 if(hstr ==' ')
12 {
13 i++;
14 continue;
15 }
16 i++;
17 if(i>=len)
18 {
19 break;
20 }
21 lstr = str[i].toLatin1();
22 hexData = ConvertCharToHex(hstr);
23 lowhexData = ConvertCharToHex(lstr);
24 if((hexData == 16)|| (lowhexData==16))
25 {
26 break;
27 }
28 else
29 {
30 hexData = hexData*16+lowhexData;
31 }
32 i++;
33 byte[hexdatalen] = (char)hexData;
34 hexdataLen++;
35 }
36 byte.resize(hexdataLen);
37 }
2、char转十六进制
1 char ConvertCharToHex(char ch)
2 {
3 if((ch >= '0') && (ch <= '9'))
4 return ch-0x30;
5 else if((ch >= 'A') && (ch <= 'F'))
6 return ch-'A'+10;
7 else if((ch >= 'a') && (ch <= 'f'))
8 return ch-'a'+10;
9 else return (-1);
10 }
3、QByteArray转QString
1 QByteArray array("Hello World");
2 QString str = array;
3 或
4 str.prepend(array);
4、将16进制QString转换成QByteArray
1 QByteArray HexStringToByteArray(QString HexString)
2 {
3 bool ok;
4 QByteArray ret;
5 HexString = HexString.trimmed();
6 HexString = HexString.simplified();
7 QStringList sl = HexString.split(" ");
8
9 foreach (QString s, sl) {
10 if(!s.isEmpty())
11 {
12 char c = s.toInt(&ok,16)&0xFF;
13 if(ok)
14 {
15 ret.append(c);
16 }
17 else
18 { }
19 }
20 }
21 return ret;
22 }
5、QByteArray转16进制QString
1 QString MainWindow::ByteArrayToHexString(QByteArray data)
2 {
3 QString ret(data.toHex().toUpper());
4 int len = ret.length()/2;
5 qDebug()<<len;
6 for(int i=1;i<len;i++)
7 {
8 ret.insert(2*i+i-1," ");
9 }
10
11 return ret;
12 }
