Using roketmq to send a string, why did consumer receive a number?

send:
Message msg = new Message (/ /

                //  Topic Topic 
                "RocketMQ_test_by_bsy",
                // Message Tag,
                //  Gmail  Consumer  MQ 
                "TagA",
                // Message Body
                //  MQ 
                //  Producer  Consumer 
                "Hello MQ".getBytes());

accept:
Consumer consumer = ONSFactory.createConsumer (properties);

    consumer.subscribe("RocketMQ_test_by_bsy", "*", new MessageListener() {
        public Action consume(Message message, ConsumeContext context) {
            System.out.println("Receive: " + message);
            return Action.CommitMessage;
        }
    });
Aug.27,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b32a4a-4d4cc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b32a4a-4d4cc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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