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| JMS test message, conversion fail |
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| vbartoni |
 Posted: Tue Oct 07, 2025 12:09 am Post subject: JMS test message, conversion fail |
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Newbie
Joined: 06 Oct 2025
Posts: 4
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Hello,
I am using Java application running on Linux, reading from IBM.MQ topic, which errors out:
| Quote: |
Failed to decode TextMessage: JMSCMQ1049: The character set '1208(UTF- Unmappable Action: REPORT, Unmappable Replacement: 63, spaceByte: 32' cannot convert some or all of the string '[B@d9f90b' |
CCSID IBM278 is used on IBM MQ side.
My application is outputting some information from the JMS message:
| Quote: |
message.getClass()) -> com.ibm.jms.JMSTextMessage
message.getStringProperty(WMQConstants.JMS_IBM_CHARACTER_SET));
->UTF-8
message.getIntProperty("JMS_IBM_Encoding"); -> 273
message.getStringProperty("JMS_IBM_Format"). -> MQSTR
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And here is the code:
| Code: |
import javax.jms.*;
import com.ibm.msg.client.jms.JmsFactoryFactory;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import com.ibm.jms.JMSMessage;
JmsFactoryFactory ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = ff.createConnectionFactory();
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, host);
cf.setIntProperty(WMQConstants.WMQ_PORT, port);
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, channel);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, queueManager);
cf.setStringProperty(WMQConstants.WMQ_SSL_CIPHER_SUITE, "*TLS12");
cf.setIntProperty(WMQConstants.WMQ_CCSID, 1208);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_APPLICATIONNAME, "ReadMQTopicDurable");
Connection connection = cf.createConnection(user, password);
connection.setClientID(clientId);
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
connection.start();
.
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Topic topic = session.createTopic(topicString);
MessageConsumer consumer = session.createDurableSubscriber(topic, subscriptionName);
.
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Message message = (JMSMessage) consumer.receive(10000);
.
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String text = ((TextMessage) message).getText();
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I think the code is quite straightforward, and attempting to tell that localal CCSID is 1208.
What is the missing part, should the client somehow tell to IBM MQ manager that conversion has to be done, or there is something to be done configuration of MQ manager?
I think that seeing Message Encoding: 273 (Little-endian integer, z/OS floating point) in the message and character encoding seen as UTF-8 looks wrong, and that some kind of conversion is missing. Maybe message encoding should be Limux/x86 (546) instead of Linux/sparc(273).
[/quote] |
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| bruce2359 |
| Posted: Tue Oct 07, 2025 9:23 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Is your data really MQSTR (string)? Or something else?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| vbartoni |
| Posted: Tue Oct 07, 2025 10:57 pm Post subject: |
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Newbie
Joined: 06 Oct 2025
Posts: 4
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| Data in the message should be string/json. |
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| bruce2359 |
| Posted: Wed Oct 08, 2025 7:02 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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| vbartoni wrote: |
| Data in the message should be string/json. |
I believe you that it should be string, but the error message says it isn't.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| RogerLacroix |
| Posted: Wed Oct 08, 2025 12:54 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3265
Location: London, ON Canada
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| vbartoni |
| Posted: Wed Oct 08, 2025 10:11 pm Post subject: |
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Newbie
Joined: 06 Oct 2025
Posts: 4
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| bruce2359 wrote: |
| vbartoni wrote: |
| Data in the message should be string/json. |
I believe you that it should be string, but the error message says it isn't. |
tnx, LOL, true, I am unable to verify, will come back here once I figure it out. |
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| vbartoni |
| Posted: Wed Oct 08, 2025 10:20 pm Post subject: |
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Newbie
Joined: 06 Oct 2025
Posts: 4
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thank you. wil repost here when I know more about the data with the help of mq queue manager admins |
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