方法一：
/**
* byte数组转化为16进制字符串
* @param bytes
* @return
*/
public static String byteToHexString(byte[] bytes) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
String strHex=Integer.toHexString(bytes[i]);
if(strHex.length() > 3) {
sb.append(strHex.substring(6));
} else {
if(strHex.length() < 2) {
sb.append("0" + strHex);
} else {
sb.append(strHex);
}
}
}
return sb.toString();
}
方法二：
private static final char HEX_DIGITS[] = "0123456789abcdef".toCharArray();
protected static String toHexString(byte[] b) {
StringBuilder sb = new StringBuilder(b.length * 2);
for (int i = 0; i < b.length; i++) {
sb.append(HEX_DIGITS[(b[i] & 0xf0) >>> 4]);
sb.append(HEX_DIGITS[b[i] & 0x0f]);
}
return sb.toString();
}