mq5.0-source.src.share.java.examples.jms20.messageheader.MessageHeadersConsumer Maven / Gradle / Ivy
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import javax.jms.*;
/**
* The MessageHeadersConsumer.class receives message from a queue
* and check the message headers.
*
* Run this program in conjunction with MessageHeadersProducer.
* Specify a queue name on the command line when you run
* the program.
*/
public class MessageHeadersConsumer {
private String destName = null;
static int exitcode = 0;
/**
* Main method.
*
* @param args the queue used by the example
*/
public static void main(String args[]) {
if ( args.length < 1 ) {
System.out.println("Usage: java MessageHeadersConsumer ");
System.exit(1);
}
// receive messages
MessageHeadersConsumer msgHeadersConsumer = new MessageHeadersConsumer();
msgHeadersConsumer.parseArgs(args);
try {
msgHeadersConsumer.runTest();
}catch(JMSException ex) {
ex.printStackTrace();
exitcode = 1;
}
System.exit(exitcode);
}
/**
* parseArgs method.
*
* @param args the arguments that are passed through main method
*/
public void parseArgs(String[] args){
destName = new String(args[0]);
System.out.println("Queue name is " + destName);
}
/**
* Receive TextMessage and check the message headers that are set on message
*
* @param none
* @throws JMSException
*/
private void runTest() throws JMSException {
// receive a message
{
ConnectionFactory connectionFactory = new com.sun.messaging.ConnectionFactory();
JMSContext context = connectionFactory.createContext();
JMSConsumer consumer = context.createConsumer(context.createQueue(destName));
TextMessage textMessage = (TextMessage) consumer.receive(1000);
if ( textMessage != null) {
System.out.println("Message Received : "+textMessage.getText());
} else {
System.out.println("Message not Received..");
exitcode=1;
return;
}
// check message header
//
// check JMSType message header
System.out.println("getJMSType : "+textMessage.getJMSType());
// check JMSReplyTo mesage header
System.out.println("getJMSReplyTo : "+textMessage.getJMSReplyTo());
// check getJMSCorrelationIDAsBytes message header
byte[] jmsCorrelationIdAsBytesRead = textMessage.getJMSCorrelationIDAsBytes();
System.out.println("getJMSCorrelationIdAsBytes length : "+ jmsCorrelationIdAsBytesRead.length);
for (int i = 0; i < jmsCorrelationIdAsBytesRead.length; i++) {
System.out.println("getJMSCorrelationIdAsBytes[" + i + "] :" + jmsCorrelationIdAsBytesRead[i]);
}
// check getCorrelationID
String jmsCorrelationIdAsStringRead = textMessage.getJMSCorrelationID();
System.out.println("getJMSCorrelationID : "+jmsCorrelationIdAsStringRead);
context.close();
}
}
}