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byte数组转16进制

private static final char[] HEX_CHARS = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};/* * byte[]数组转十六进制 */public static String bytes2hexStr(byte[] bytes) {    int len = bytes.length;    if (len == 0) {        return null;    }    char[] cbuf = new char[len * 2];    for (int i = 0; i < len; i++) {        int x = i * 2;        cbuf[x] = HEX_CHARS[(bytes[i] >>> 4) & 0xf];        cbuf[x + 1] = HEX_CHARS[bytes[i] & 0xf];    }    return new String(cbuf);}

16进制转byte数组

/**     * hex字符串转byte数组     *     * @param inHex 待转换的Hex字符串     * @return 转换后的byte数组结果     */    public static byte[] hexToByteArray(String inHex) {        int hexlen = inHex.length();        byte[] result;        if (hexlen % 2 == 1) {            // 奇数            hexlen++;            result = new byte[(hexlen / 2)];            inHex = "0" + inHex;        } else {            // 偶数            result = new byte[(hexlen / 2)];        }        int j = 0;        for (int i = 0; i < hexlen; i += 2) {            result[j] = hexToByte(inHex.substring(i, i + 2));            j++;        }        return result;    }

16进制转10进制

strSerial = bytes2hexStr(struOut.byData);System.out.println(strSerial);makeDevice(lUserID, "2", "1", "3", "2");System.out.println("读卡成功,内容为" + Long.parseLong(strSerial, 16));

16进制补足32位

while (cardNo.length() < 32) {    cardNo = "0" + cardNo;}if (cardNo.length() > 32) {    cardNo = cardNo.substring(0, 16);}

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