ApsaraMQ for RabbitMQ:CreateAccount

    public class Base64Utils {
         public static final Charset UTF8 = Charset.forName("UTF-8");
         /\*\*
         * Decode the Base64 string.
         \* @param str
         \* @return
         \*/
         public static String decode(String str) {
              return new String(Base64.getDecoder().decode(str.getBytes(UTF8)), UTF8);
         }
         /\*\*
         * Encode the instance ID and AccessKey ID into a Base64 string.
         \* @param bytes = "2" + ":" + "{instanceId}" + ":" + "{ak}"
         \* @return
         \*/
         public static String encode(String bytes) {
              return new String(Base64.getEncoder().encode(bytes.getBytes(UTF8)), UTF8);
          }

         public static void main(String[] args) {
              String example = "this is a example";
              System.out.println(encode(example));
              System.out.println(decode(encode(example)));

        }
    }

public static String hamcsha1(byte[] data, byte[] key) throws NoSuchAlgorithmException, InvalidKeyException {
        SecretKeySpec signingKey = new SecretKeySpec(key, "HmacSHA1");
        Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(signingKey);
        return byte2hex(mac.doFinal(data));
    }

    public static String byte2hex(byte[] b) {
        StringBuilder hs = new StringBuilder();
        String stmp;
        for (int n = 0; b != null && n < b.length; n++) {
            stmp = Integer.toHexString(b[n] & 0XFF);
            if (stmp.length() == 1) {
                hs.append('0');
            }
            hs.append(stmp);
       } 
       return hs.toString().toUpperCase();
    }
     // If value1 is the timestamp that indicates when the static username is created and value2 is the AccessKey ID, the value of the secretSign parameter is generated. If value1 is the AccessKey ID, value2 is the timestamp that indicates when the static username is created, the value of the signature parameter is generated.
     public static void main(String[] args) throws InvalidKeyException, NoSuchAlgorithmException {
         String value1 = "XXX";
         String value2 = "XXX";
         System.out.println(hamcsha1(value1.getBytes(), value2.getBytes()));
     }