private static String byte2hex(byte[] bytes) { StringBuilder sign = new StringBuilder(); for (byte b : bytes) { String hex = Integer.toHexString(b & 255); if (hex.length() == 1) { sign.append("0"); } sign.append(hex.toUpperCase()); } return sign.toString(); }翻译成javascript代码

& 0xFF); if (hex.length() == 1) { sign.append("0"); } sign.append(hex.toUpperCase()); } return sign.toString(); }这个函数可以将字节数组转换为十六进制字符串。