Issue with MDB (jms Queue) in weblogic 8.1

Question

          Hi all...
          I'm facing a strange kind of problem with MDB using weblogic 8.1.
          The code worked perfectly in weblogic 7.0.
          This is wht i'm trying to achieve..
          i'm having a MDB which implements a onMessage().
          I'm publishing message thru a standalone client. Publishing works fine..
          The problem is onMessage(javax.jms.Message msg) is never been called :-(.
          when i monitor it shows that messages are recieved..
          Am is missing something that is really important..
          here is my code
          package com.csxwt.zodiac.service.domain;
          import javax.ejb.*;
          import javax.jms.*;
          import javax.naming.*;
          import java.io.Serializable;
          //import com.csxwt.zodiac.service.domain.TestObject;
          public class MDBTestBean implements MessageDrivenBean, MessageListener {
          MessageDrivenContext messageDrivenContext;
          public void ejbCreate() throws CreateException {
          System.out.println("into the ejb create");
          /**@todo Complete this method*/
          public void ejbRemove() {
          /**@todo Complete this method*/
          public void onMessage(javax.jms.Message msg) {
          System.out.println("into the onMessage method 1 ");
          ObjectMessage objectMsg = null;
          String strObject = "Test";
          try
          System.out.println("into the onMessage method 2 ");
          if (msg instanceof ObjectMessage)
          System.out.println("into the onMessage method 3");
          objectMsg = (ObjectMessage) msg;
          Serializable serializableObj = objectMsg.getObject();
          String test = serializableObj.toString();
          System.out.println("value of the message sent " + test);
          TestObject test1 = null;
          if(serializableObj instanceof TestObject )
          test1 = (TestObject) serializableObj;
          System.out.println("after getting the test value ");
          System.out.println("getting the test object valuye " + test1.getName());
          else
          return;
          catch (Exception e)
          System.out.println("Message Bean:unexpected Exception thrown ");
          e.printStackTrace();
          public void setMessageDrivenContext(MessageDrivenContext messageDrivenContext)
          System.out.println("into MDB context");
          this.messageDrivenContext = messageDrivenContext;
          here are the 2 xml files....
          <ejb-jar>
          <enterprise-beans>
          <message-driven>
          <display-name>MDBTest</display-name>
          <ejb-name>MDBTest</ejb-name>
          <ejb-class>com.csxwt.zodiac.service.domain.MDBTestBean</ejb-class>
          <transaction-type>Container</transaction-type>
          <message-selector>GATE_LANE</message-selector>
          <message-driven-destination>
          <destination-type>javax.jms.Queue</destination-type>
          </message-driven-destination>
          </message-driven>
          </enterprise-beans>
          <assembly-descriptor>
          <container-transaction>
          <method>
          <ejb-name>MDBTest</ejb-name>
          <method-name>*</method-name>
          </method>
          <trans-attribute>Required</trans-attribute>
          </container-transaction>
          </assembly-descriptor>
          </ejb-jar>
          <weblogic-ejb-jar>
          <weblogic-enterprise-bean>
          <ejb-name>MDBTest</ejb-name>
          <message-driven-descriptor>
          <pool>
          <max-beans-in-free-pool>200</max-beans-in-free-pool>
          <initial-beans-in-free-pool>20</initial-beans-in-free-pool>
          </pool>
          <destination-jndi-name>zodiac.jms.queue.HardWareOutMessageQueue</destination-jndi-name>
          </message-driven-descriptor>
          </weblogic-enterprise-bean>
          </weblogic-ejb-jar>
          Am i missing something somewhere?????
          any help in this is highly appreciated..
          thanks in advance.
          r
          sasi
          

Answer 1

Check your log for error and warning messages. If there
          are some, they should help trace down the problem. If there
          aren't any, try confirm that your MDB is deploying in
          the first place.
          The MDB below is a Q MDB, but you write below that your client
          is a "publisher". "Publisher" implies a topic producer, not
          a queue producer, and topic producer can't publish to queues.
          Tom
          T. Sasii Dharma wrote:
          > Hi all...
          >
          > I'm facing a strange kind of problem with MDB using weblogic 8.1.
          > The code worked perfectly in weblogic 7.0.
          > This is wht i'm trying to achieve..
          > i'm having a MDB which implements a onMessage().
          > I'm publishing message thru a standalone client. Publishing works fine..
          > The problem is onMessage(javax.jms.Message msg) is never been called :-(.
          > when i monitor it shows that messages are recieved..
          > Am is missing something that is really important..
          >
          > here is my code
          >
          > package com.csxwt.zodiac.service.domain;
          >
          > import javax.ejb.*;
          > import javax.jms.*;
          > import javax.naming.*;
          > import java.io.Serializable;
          > //import com.csxwt.zodiac.service.domain.TestObject;
          >
          > public class MDBTestBean implements MessageDrivenBean, MessageListener {
          > MessageDrivenContext messageDrivenContext;
          > public void ejbCreate() throws CreateException {
          > System.out.println("into the ejb create");
          > /**@todo Complete this method*/
          > }
          > public void ejbRemove() {
          > /**@todo Complete this method*/
          > }
          > public void onMessage(javax.jms.Message msg) {
          > System.out.println("into the onMessage method 1 ");
          > ObjectMessage objectMsg = null;
          > String strObject = "Test";
          > try
          > {
          > System.out.println("into the onMessage method 2 ");
          > if (msg instanceof ObjectMessage)
          > {
          > System.out.println("into the onMessage method 3");
          > objectMsg = (ObjectMessage) msg;
          > Serializable serializableObj = objectMsg.getObject();
          > String test = serializableObj.toString();
          > System.out.println("value of the message sent " + test);
          > TestObject test1 = null;
          > if(serializableObj instanceof TestObject )
          > {
          > test1 = (TestObject) serializableObj;
          > System.out.println("after getting the test value ");
          > System.out.println("getting the test object valuye " + test1.getName());
          > }
          >
          > }
          > else
          > {
          > return;
          > }
          >
          > }
          > catch (Exception e)
          > {
          > System.out.println("Message Bean:unexpected Exception thrown ");
          > e.printStackTrace();
          > }
          >
          > }
          > public void setMessageDrivenContext(MessageDrivenContext messageDrivenContext)
          > {
          > System.out.println("into MDB context");
          >
          > this.messageDrivenContext = messageDrivenContext;
          > }
          > }
          >
          >
          > here are the 2 xml files....
          >
          > <ejb-jar>
          > <enterprise-beans>
          > <message-driven>
          > <display-name>MDBTest</display-name>
          > <ejb-name>MDBTest</ejb-name>
          > <ejb-class>com.csxwt.zodiac.service.domain.MDBTestBean</ejb-class>
          > <transaction-type>Container</transaction-type>
          > <message-selector>GATE_LANE</message-selector>
          > <message-driven-destination>
          > <destination-type>javax.jms.Queue</destination-type>
          > </message-driven-destination>
          > </message-driven>
          > </enterprise-beans>
          > <assembly-descriptor>
          > <container-transaction>
          > <method>
          > <ejb-name>MDBTest</ejb-name>
          > <method-name>*</method-name>
          > </method>
          > <trans-attribute>Required</trans-attribute>
          > </container-transaction>
          > </assembly-descriptor>
          > </ejb-jar>
          >
          > <weblogic-ejb-jar>
          > <weblogic-enterprise-bean>
          > <ejb-name>MDBTest</ejb-name>
          > <message-driven-descriptor>
          > <pool>
          > <max-beans-in-free-pool>200</max-beans-in-free-pool>
          > <initial-beans-in-free-pool>20</initial-beans-in-free-pool>
          > </pool>
          > <destination-jndi-name>zodiac.jms.queue.HardWareOutMessageQueue</destination-jndi-name>
          > </message-driven-descriptor>
          > </weblogic-enterprise-bean>
          > </weblogic-ejb-jar>
          >
          > Am i missing something somewhere?????
          > any help in this is highly appreciated..
          >
          > thanks in advance.
          >
          > r
          > sasi