93 lines
2.6 KiB
Java
93 lines
2.6 KiB
Java
Publishing AJMS message from a servlet
|
|
|
|
|
|
|
|
package com.ack.web.servlet;
|
|
|
|
import java.io.IOException;
|
|
import java.io.PrintWriter;
|
|
import javax.jms.*;
|
|
import javax.naming.Context;
|
|
import javax.naming.InitialContext;
|
|
import javax.servlet.ServletException;
|
|
import javax.servlet.http.HttpServlet;
|
|
import javax.servlet.http.HttpServletRequest;
|
|
import javax.servlet.http.HttpServletResponse;
|
|
|
|
/**
|
|
* web.xml servlet configuration file
|
|
*
|
|
<web-app>
|
|
...
|
|
<resource-ref>
|
|
<description>outgoing jms publish</description>
|
|
<res-ref-name>jms/topic/connection</res-ref-name>
|
|
<res-type>javax.jms.TopicConnectionFactory</res-type>
|
|
<res-auth>CONTAINER</res-auth>
|
|
</resource-ref>
|
|
...
|
|
</web-app>
|
|
*
|
|
* the vendor-specific web.xml file that maps the res-ref-name
|
|
* onto the one found in the jndi name space
|
|
*
|
|
<weblogic-web-app>
|
|
...
|
|
<reference-descriptor>
|
|
<resource-description>
|
|
<res-ref-name>jms/topic/connection</res-ref-name>
|
|
<jndi-name>jms/akira/connectionfactory</jndi-name>
|
|
</resource-description>
|
|
...
|
|
</reference-descriptor>
|
|
...
|
|
</weblogic-web-app>
|
|
*/
|
|
|
|
public class PublishingAJMSMessageFromAServlet extends HttpServlet {
|
|
|
|
public void doGet( HttpServletRequest req, HttpServletResponse res )
|
|
throws ServletException, IOException {
|
|
res.setContentType( "text/html" );
|
|
PrintWriter pw = res.getWriter();
|
|
|
|
TopicConnection topicCon = null;
|
|
try {
|
|
// get the topic connection factory
|
|
Context ctx = new InitialContext();
|
|
TopicConnectionFactory tcf
|
|
= (TopicConnectionFactory) ctx.lookup( "java:comp/env/jms/topic/connection" );
|
|
|
|
topicCon = tcf.createTopicConnection();
|
|
|
|
// create topic session off the connection
|
|
TopicSession topicSession = topicCon.
|
|
createTopicSession( false, Session.AUTO_ACKNOWLEDGE );
|
|
|
|
// get handle on topic, create a publisher and publish the message
|
|
Topic topic = (Topic) ctx.lookup( "jms/topic/devilman" );
|
|
TopicPublisher publisher = topicSession.createPublisher( topic );
|
|
Message msg = topicSession.createTextMessage( "hello..." );
|
|
publisher.publish( msg );
|
|
|
|
pw.println( "published the message" );
|
|
}
|
|
catch( Exception ex ) {
|
|
log( "couldn't publish the message", ex );
|
|
res.sendError( res.SC_INTERNAL_SERVER_ERROR, ex.getMessage() );
|
|
}
|
|
|
|
finally {
|
|
// close the topic connection
|
|
if( topicCon != null ) {
|
|
try {
|
|
topicCon.close();
|
|
}
|
|
catch( JMSException jme ) {
|
|
log( "problem closing topic con" );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|