十六进制字符转字节数组:
/**
* 16进制字符串转换成字节数组
*
* @param hex
* @return
*/
public static byte[] hexStringToByte(String hex) {
byte[] b = new byte[hex.length() / 2];
int j = 0;
for (int i = 0; i < b.length; i++) {
char c0 = hex.charAt(j++);
char c1 = hex.charAt(j++);
b[i] = (byte) ((parse(c0) << 4) | parse(c1));
}
return b;
}
private static int parse(char c) {
if (c >= 'a')
return (c - 'a' + 10) & 0x0f;
if (c >= 'A')
return (c - 'A' + 10) & 0x0f;
return (c - '0') & 0x0f;
}
字节数组转十六进制字符:
/**
* 字节数组转16进制字符串
* @param src
* @return
*/
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 hex = Integer.toHexString(v);
if (hex.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hex);
}
return stringBuilder.toString();
}