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