JAVA

/**
     * 从字节数组转换到16进制字符串
     * @param b 字节数组
     * @return 转换后的字符串
     */
    public static String hexStringFromByteArray(byte[] b)
    {
        if (b == null)
        {
            return ""; //$NON-NLS-1$
        }
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < b.length; i++)
        {
            String s = Integer.toHexString(b[i]).toUpperCase(Locale.getDefault());
            if (s.length() < 2)
            {
                sb.append('0');
                sb.append(s);
                sb.append(' ');
            }
            else if (s.length() > 2)
            {
                sb.append(s.substring(s.length() - 2));
                sb.append(' ');
            }
            else
            {
                sb.append(s);
                sb.append(' ');
            }

        }
        return sb.toString();
    }