How to use the MessageTransformer utility to convert SOAP message to JMS message
/*
* @(#)SOAPtoJMSServlet.java 1.5 02/07/19
*
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import javax.xml.messaging.JAXMServlet;
import javax.xml.messaging.ReqRespListener;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPPart;
import com.sun.messaging.xml.MessageTransformer;
import com.sun.messaging.TopicConnectionFactory;
import javax.jms.MessageListener;
import javax.jms.TopicConnection;
import javax.jms.TopicSession;
import javax.jms.Session;
import javax.jms.Message;
import javax.jms.Topic;
import javax.jms.JMSException;
import javax.jms.TopicPublisher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
/**
* This example shows how to use the MessageTransformer utility to convert SOAP
* message to JMS message. When SOAP messages are received, they are
* delivered to the ReqRespListener's onMessage() method. The onMessage()
* implementation uses the utility to convert SOAP to JMS message, then
* publishes the message to the JMS Topic.
* <p>
* The onMessage() method adds <MessageStatus> element with value "published"
* to the SOAPBody and returns the SOAP message to the caller.
*/
public class SOAPtoJMSServlet extends JAXMServlet implements ReqRespListener {
TopicConnectionFactory tcf = null;
TopicConnection tc = null;
TopicSession session = null;
Topic topic = null;
TopicPublisher publisher = null;
/**
* The init method set up JMS Connection/Session/Publisher.
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
try {
tcf = new com.sun.messaging.TopicConnectionFactory();
tc = tcf.createTopicConnection();
session = tc.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
String topicName = config.getInitParameter("TopicName");
if ( topicName == null ) {
topicName = "TestTopic";
}
topic = session.createTopic(topicName);
publisher = session.createPublisher(topic);
} catch (Exception jmse) {
throw new ServletException (jmse);
}
}
/**
* Clean up JMS connection.
*/
public void destroy() {
try {
if ( tc != null ) {
tc.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* SOAP Messages are delivered to this method and then published to the
* JMS topic destination.
*/
public SOAPMessage onMessage (SOAPMessage soapMessage) {
try {
Message message =
MessageTransformer.SOAPMessageIntoJMSMessage(soapMessage, session);
publisher.publish( message );
} catch (Exception e) {
e.printStackTrace();
}
SOAPMessage resp = generateResponseMessage(soapMessage);
return resp;
}
/**
* Add a MessageStatus element with the value of "published" to
* the soapMessage.
*/
public SOAPMessage generateResponseMessage(SOAPMessage soapMessage) {
try {
SOAPPart soapPart = soapMessage.getSOAPPart();
SOAPEnvelope envelope = soapPart.getEnvelope();
SOAPBody soapBody = envelope.getBody();
soapBody.addChildElement("MessageStatus").addTextNode("published");
soapMessage.saveChanges();
} catch (SOAPException soape) {
soape.printStackTrace();
}
return soapMessage;
}
}
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