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MQSeries.net Forum Index » IBM MQ Java / JMS » onMessage() & read message props

onMessage() & read message props

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vanessa

Posted: Fri Feb 08, 2002 12:29 am Post subject:

Novice

Joined: 24 Jan 2002
Posts: 22

I am having problems in reading the message properties in onMessage()
i put the template here, i want to know how to get - set properties for a message.(i inlcuded them in comments) ... just give me a simple one

thanks

---------------------------------------------------------------------------

public void onMessage(javax.jms.Message message) {

try {

// how to get the message properties
// how to set the message properties

}
catch(){}

---------------------------------------------------------------------------

kolban

Posted: Fri Feb 08, 2002 7:18 am Post subject:

Grand Master

Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA

Firstly, it is not meaningful to set the message properties in an onMessage invocation. For the most part, the message is readonly.

What do you mean by the message properties? If you mean the payload of the message, I suspect that you want to cast the message to one of the JMS message types (e.g. TextMessage) and then use the readXXX methods to extract the contents field by field.

abmanesh

Posted: Fri Feb 08, 2002 1:01 pm Post subject:

Apprentice

Joined: 06 Nov 2001
Posts: 39

'Am not quite clear what is the exact problem you are having. Any way here is a method body implementing the onMessage method . The method displays the message text if the message if of text message.
*/
public void onMessage(Message message){
try {
if (message instanceof TextMessage){
System.out.println(((TextMessage)message).getText());
}
}catch (JMSException e){
e.printStackTrace();
}
}

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