2 Replies Latest reply on Jul 14, 2004 10:28 PM by genman

    connect to queue or topic from inside an applet?

    hustenbolschen
    hustenbolschen Jul 14, 2004 10:35 AM

      Hello,

      I´m trying to send a message to a queue and subscribe to a topic by an applet.

      I tried both secure an non secure applets, and it doesn`t work.

      Is there a possibilty to do this?
      I know I´m only allowed to create an network-connection to the host i load the applet from.
      It works all fine when I start the applet with the eclipse applet loader, but inside the browser it fails to connect to the queue. Without Queue connection it works alright.

      Here is my applet-code and the Error Messages from the VM.

      At first set up context

      public void setupContext()
 throws JMSException, NamingException{

 Properties properties = new Properties();
 String myServer = lat.getMyServer();
 System.out.println("Server: "+myServer.toString());

 properties.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory" ) ;
 properties.setProperty("java.naming.provider.url", "jnp://"+myServer+":1099" ) ;
 properties.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces" );


 InitialContext iniCtx = new InitialContext(properties);
 Object tmp = iniCtx.lookup("HTTPConnectionFactory");

 QueueConnectionFactory qcf = (QueueConnectionFactory) tmp;
 TopicConnectionFactory tcf = (TopicConnectionFactory) tmp;

 qConn = qcf.createQueueConnection();
 tConn = tcf.createTopicConnection();

 queA = (Queue) iniCtx.lookup("queue/A");
 queB = (Queue) iniCtx.lookup("queue/B");

 topicA = (Topic) iniCtx.lookup("topic/testTopic");

 qSession = qConn.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
 tSession = tConn.createTopicSession(false,TopicSession.AUTO_ACKNOWLEDGE);
 }


      Then try to send a MapMessage 

       public void sendMapMessage(){
 try {
 qConn.start();

 System.out.println("Begin sendRecvAsync");

 // Send a few text msgs to queB
 QueueSender send = qSession.createSender(queB);
 Long Time = new Long(System.currentTimeMillis());
 String strMessageId = Time.toString();
-->Here it fails?
 MapMessage mm = qSession.createMapMessage();
 mm.setStringProperty("Typ","Firma");
 mm.setIntProperty("Id",0);
 mm.setStringProperty("Action","Create");
 mm.setStringProperty("Ort","Gifhorn");
 mm.setStringProperty("ServerId","12342345");
 mm.setJMSReplyTo(queA);
 send.send(mm);
 qConn.stop();
 }
 catch (JMSException e) {
 // TODO Auto-generated catch block
 lat.setStatusMsg("MDBComm - Error while sending: "+e.toString());
 }
 System.out.println("End sendRecvAsync");

 }



      AND the error message: 

      Begin sendRecvAsync

Verbindung http://xx.xxx.xxx.xxx:8080/jbossmq-httpil/HTTPServerILServlet ohne Proxy

java.lang.ExceptionInInitializerError

 at org.jboss.util.property.Property.get(Property.java:87)

 at org.jboss.util.platform.Constants.<clinit>(Constants.java:23)

 at org.jboss.util.Strings.<clinit>(Strings.java:31)

 at org.jboss.mq.SpyMessage.checkProperty(SpyMessage.java:413)

 at org.jboss.mq.SpyMessage.setStringProperty(SpyMessage.java:516)

 at liato.web.applet.MDBCommunicator.sendMapMessage(MDBCommunicator.java:89)

 at liato.web.applet.Liato_Applet.init(Liato_Applet.java:102)

 at sun.applet.AppletPanel.run(Unknown Source)

 at java.lang.Thread.run(Unknown Source)

Caused by: java.security.AccessControlException: access denied (java.util.PropertyPermission java.naming.provider.url read)

 at java.security.AccessControlContext.checkPermission(Unknown Source)

 at java.security.AccessController.checkPermission(Unknown Source)

 at java.lang.SecurityManager.checkPermission(Unknown Source)

 at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)

 at java.lang.System.getProperty(Unknown Source)

 at org.jboss.util.property.PropertyMap.init(PropertyMap.java:93)

 at org.jboss.util.property.PropertyMap.<init>(PropertyMap.java:73)

 at org.jboss.util.property.PropertyMap.<init>(PropertyMap.java:81)

 at org.jboss.util.property.PropertyManager.<clinit>(PropertyManager.java:57)

 ... 9 more


      Thanks for help



      • 2238 Views
      • Tags: