大括号理的就是一个byte类型的数组,里面是3个byte类型那个的数
public static String stringToHexString(String strPart) {
String hexString = "";
for (int i = 0; i < strPart.length(); i++) {
int ch = (int) strPart.charAt(i);
String strHex = Integer.toHexString(ch);
hexString = hexString + strHex;
}
return hexString;
}
private static String hexString="0123456789ABCDEF";
/*
* 将字符串编码成16进制数字,适用于所有字符（包括中文）
*/
public static String encode(String str)
{
// 根据默认编码获取字节数组
byte[] bytes=str.getBytes();
StringBuilder sb=new StringBuilder(bytes.length*2);
// 将字节数组中每个字节拆解成2位16进制整数
for(int i=0;i<bytes.length;i++)
{
sb.append(hexString.charAt((bytes[i]&0xf0)>>4));
sb.append(hexString.charAt((bytes[i]&0x0f)>>0));
}
return sb.toString();
}
/*
* 将16进制数字解码成字符串,适用于所有字符（包括中文）
*/
public static String decode(String bytes)
{
ByteArrayOutputStream baos=new ByteArrayOutputStream(bytes.length()/2);
// 将每2位16进制整数组装成一个字节
for(int i=0;i<bytes.length();i+=2)
baos.write((hexString.indexOf(bytes.charAt(i))<<4 |hexString.indexOf(bytes.charAt(i+1))));
return new String(baos.toByteArray());
}
private static byte uniteBytes(byte src0, byte src1) {
byte _b0 = Byte.decode("0x" + new String(new byte[] {src0})).byteValue();
_b0 = (byte) (_b0 << 4);
byte _b1 = Byte.decode("0x" + new String(new byte[] {src1})).byteValue();
byte ret = (byte) (_b0 | _b1);
return ret;
public static byte[] HexString2Bytes(String src)
{
byte[] ret = new byte[6];
byte[] tmp = src.getBytes();
for(int i=0; i<6; ++i )
{
ret[i] = uniteBytes(tmp[i*2], tmp[i*2+1]);
}
return ret;
}
/**
* Convert byte[] to hex string.这里我们可以将byte转换成int，然后利用Integer.toHexString(int)来转换成16进制字符串。
* @param src byte[] data
* @return hex string
*/
public static String bytesToHexString(byte[] src){
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0) {
return null;
}
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
/**
* Convert hex string to byte[]
* @param hexString the hex string
* @return byte[]
*/
public static byte[] hexStringToBytes(String hexString) {
if (hexString == null || hexString.equals("")) {
return null;
}
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] d = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return d;
}
/**
* Convert char to byte
* @param c char
* @return byte
*/
private byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}
