Question

我有一个使用javax.jms *类的java程序将消息发布到MQ主题（MQv7.5），很少有消息进入DLQ，DLQ Header中有以下详细信息，

格式＆＃39;无格式＆＃39; 原因＆＃39; 3023＆＃39; - ＆GT; 3023 0x00000bcf MQRCCF_MD_FORMAT_ERROR

消息中的标题信息：


DeadLetter Header Information
Encoding    'Default Encoding'
Character Set   'ibm1208'
Format  'No Format'
Reason  '3023'
Destination Queue Manager   'QMGRSTCRT1'
Destination Queue   ' '
Put Appl Name   'WebSphere MQ Client for Java'
Put Appl Type   'Java'
Date/Time   '20150127-19271043'

RFH Header Information  

Encoding    'Default Encoding'
Character Set   'ibm1208'
Flags   '0'
Format  'No Format'
Name Value Pair 'UNIQUE_CONNECTION_ID', '414D512045414D51534331202020202054B921242739A302 MQPSCommand Publish MQPSTopic CUSTOMER_EVENT MQPSPubOpts NoReg ' 

MQMD

Put Date    'Tue Jan 07 13:38:44 CST 2015'
Message ID:     '414D512045414D51534331202020202054B9212427896148'
Correlation ID:     '414D512045414D515343312020202020542907882CEF7E04'
Group ID:   '000000000000000000000000000000000000000000000000'
Account Token:      '0000000000000000000000000000000000000000000000000000000000000000'
AppID Data:     ' '
App Origin Data:    ' '
Backout Count:      '0'
Character Set:      'ibm1208'
Expiry:     '14'
Format:     'RFH version 1'
Encoding:   'Default Encoding'
Feedback:   'None'
Message Flags:      'None'
Offset:     '0'
Sequence Number:    '1'
Type:   'Datagram'
Persistence:    'Not Persistent'
Priority:   '4'
Put Appl Name:      'QMGRSTCRT1 '
Put Appl Type:      '26'
Reply To Queue Manager:     'QMGRSTCRT1 '
Reply To Queue Name:    ' '
Report:     'Default Report Options, New Msg ID, Copy Msg ID to Correlation ID, Dead Letter Q'
User ID:    'tempid '
Version:    '2'
Content Type:   'writestring'

JMS properties
JMSDeliveryMode 2
JMSDestination  topic://CUSTOMER_EVENT
JMSTimestamp    1422387524491
mcd.Msd jms_object
JMSExpiration   1422391124491

添加与DLQ消息对应的Qmgr日志..


AMQ5882: WebSphere MQ Publish/Subscribe broker has written a message to the
dead-letter queue.

EXPLANATION:
The broker has written a message to the dead-letter queue
(SYSTEM.DEADLETTER.QUEUE                        ) for reason
'3023:MQRCCF_MD_FORMAT_ERROR'. Note. To save log space, after the first
occurrence of this message for stream (TEST.PUBSUB
       ), it will only be written periodically.
ACTION:
If the message was not deliberately written to the dead-letter queue, for
example by a message broker exit, determine why the message was written to the
dead-letter queue, and resolve the problem that is preventing the message from
being sent to its destination.

程序中使用的代码段

    private TopicConnection topicConnection = null;
private TopicSession topicSession = null;
private TopicPublisher topicPub = null ;
private TopicSubscriber topicSub = null ;

protected void createTopicPub（String clientID，long msgLifeTime）抛出JMSException { closeTopicPub（）;

    if (topicSession == null)
        createTopicConnectionWithClientID(clientID);

    Topic the_topic = (Topic)topicSession.createTopic(topicName);
    topicPub = topicSession.createPub(the_topic);           
    topicPub.setDeliveryMode(DeliveryMode.PERSISTENT);
    topicPub.setPriority(4);
    //SET the time to expire the message
    topicPub.setTimeToLive(msgLife);        
    topicConnection.start();        
}
public void sendMessage(String msg) throws JMSException {
    TextMessage message = null ;
    if (topicPub == null) {
        throw new JMSException("TopicPub is null");
    }
    message = topicSession.createTextMessage(msg);
    topicPub.publish(message);              
    log.debug("Message sent");

}

private void createTopicConnWithClientID(String clientID) throws JMSException {
            closeTopicConnection(); 
        MQTopicConnectionFactory topicCF = new MQTopicConnectionFactory();
        topicCF.setHostName(hostName);
        topicCF.setPort(portNumber);
        topicCF.setQueueManager(queueManager);
        topicCF.setChannel(channel);
        topicCF.setTransportType(JMSC.MQJMS_TP_CLIENT_MQ_TCPIP);        
        // create connection and session
        topicConnection = topicCF.createTopicConnection();      
        topicConnection.setClientID(clientID);              
        topicSession = topicConnection.createTopicSession(transactional,Session.AUTO_ACKNOWLEDGE);
}

导致MD格式错误的原因是什么？需要更正的地方在哪里？

Answer 1

此错误代码MQRCCF_MD_FORMAT_ERROR表示邮件的MQMD格式字段的值不是MQFMT_ADMIN。

IBM MQ的各个部分期望获得Format = MQFMT_ADMIN的消息： -

Command Server
排队的Pub / Sub

根据提供的AMQERR01.LOG错误消息，我们可以看到相关功能是排队的发布/订阅代理。

由于您使用的是V7.5，因此您不需要使用排队的pub / sub，您可以直接使用这些主题。你说你的应用程序是Java，但不要提及它是否是JMS。使用排队的pub / sub与直接使用主题是在JMS的封面下进行的，因此您可能不知道自己正在这样做。检查PROVIDERVERSION是否设置为7而不是6.

IBM MQ DLQ消息导致MQRC 3023

1 个答案: