How to send message to WebSphere MQ using Apche Camel and Receive message from MQ Queue - spring

Question

I didnt see enough examples on web using apache camel with websphere mq to send and receive messages. I had a example code but I got struck at the middle of code. could any one help on this..
import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Producer;
import org.apache.camel.util.IOHelper;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Client that uses the Mesage Endpoint
* pattern to easily exchange messages with the Server.
* <p/>
* Notice this very same API can use for all components in Camel, so if we were using TCP communication instead
* of JMS messaging we could just use <code>camel.getEndpoint("mina:tcp://someserver:port")</code>.
* <p/>
* Requires that the JMS broker is running, as well as CamelServer
*/
public final class CamelClientEndpoint {
private CamelClientEndpoint() {
//Helper class
}
// START SNIPPET: e1
public static void main(final String[] args) throws Exception {
System.out.println("Notice this client requires that the CamelServer is already running!");
AbstractApplicationContext context = new ClassPathXmlApplicationContext("camel-client.xml");
CamelContext camel = context.getBean("camel-client", CamelContext.class);
// get the endpoint from the camel context
Endpoint endpoint = camel.getEndpoint("jms:queue:numbers");
// create the exchange used for the communication
// we use the in out pattern for a synchronized exchange where we expect a response
Exchange exchange = endpoint.createExchange(ExchangePattern.InOut);
// set the input on the in body
// must be correct type to match the expected type of an Integer object
exchange.getIn().setBody(11);
// to send the exchange we need an producer to do it for us
Producer producer = endpoint.createProducer();
// start the producer so it can operate
producer.start();
// let the producer process the exchange where it does all the work in this oneline of code
System.out.println("Invoking the multiply with 11");
producer.process(exchange);
// get the response from the out body and cast it to an integer
int response = exchange.getOut().getBody(Integer.class);
System.out.println("... the result is: " + response);
// stopping the JMS producer has the side effect of the "ReplyTo Queue" being properly
// closed, making this client not to try any further reads for the replies from the server
producer.stop();
// we're done so let's properly close the application context
IOHelper.close(context);
}
}
I got struck at this point of code..
exchange.getIn()
Do I have to use exchange.getOut() to send message?? and How to construct message using string and add headers to it.

Answer 1

Welcome to stackoverflow!
I am still not sure what exactly is the problem you are stuck at and it prevents me (and possibly others as well) in helping you resolve your roadblock.
Perhaps you need to familiarize a bit more on what camel is and how it works. Camel in Action is a great book to help you with that.
If you are unable to get a copy at this point, a preview of the first few chapters of the book is available online and it should give you much better leverage. Source code repository for chapter 2 should give you some more ideas around how to process JMS messages.
In addition to it. Please don't expect full blown solutions from StackOverflow. You may read this page on how to ask a good question