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Need help with JMS+ Spring + ActiveMQ

 
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Posts: 36
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Hi...

I'm learning to using JMS + Spring + ActiveMQ for a simple application. The following is my configs and MD Pojo. My question is that when I tried to send <300 messages, it gave me java out of memory error and it seems so slow. Please tell me what's wrong with it... it's kind of urgent, much apprecicated!!!

Server-side config:

<beans>
<bean id="activeMQContainer" class="org.activemq.jca.JCAContainer">
<property name="workManager">
<bean id="workManager" class="org.activemq.work.SpringWorkManager"/>
</property>

<property name="resourceAdapter">
<bean id="activeMQResourceAdapter"
class="org.activemq.ra.ActiveMQResourceAdapter">
<property name="serverUrl" value="tcp://localhost:61616"/>;
</bean>
</property>
</bean>

<bean id="HelloMDP" factory-method="addConnector" factory-bean="activeMQContainer">
<property name="activationSpec">
<bean class="org.activemq.ra.ActiveMQActivationSpec">
<property name="destination" value="Hello.Queue"/>
<property name="destinationType" value="javax.jms.Queue"/>
</bean>
</property>
<property name="ref" value="helloBean" />
</bean>

<bean id="helloBean" class="com.icrossing.mdpojo.lingo.impl.HelloBean">
</bean>
</beans>

client-side

<beans>
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="defaultDestinationName" value="Hello.Queue" />
<property name="connectionFactory" ref="connectionFactory" />
</bean>

<bean id="connectionFactory" class="org.activemq.ActiveMQConnectionFactory" init-method="start">
<property name="brokerURL" value="tcp://localhost:61616"; />
</bean>
</beans>

My java code:

code snippet for producing Messages:

for (int i = 0; i < messageCount ; i++) {

final String text = "Text for message: " + i;
template.send(new MessageCreator() {
public Message createMessage(Session session) throws JMSException {
TextMessage message = session.createTextMessage(text);
message.setStringProperty("next", "foo");
return message;
}
});
}


// Consumer

public class HelloBean extends implements MessageListener {

private String myId = "foo";
private Connection connection;
private Session session;
private MessageConsumer consumer;
private Destination destination;
private ActiveMQQueue queue;
private static final org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory.getLog(Hello Bean.class);

public void start(JmsTemplate template) {
String myId ="foo";

ConnectionFactory factory = template.getConnectionFactory();
try{
connection = factory.createConnection();
connection.setClientID(myId);
connection.start();

session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
queue = (org.activemq.message.ActiveMQQueue)session.create Queue(template.getDefaultDestinationName().toStrin g());
consumer = session.createConsumer(queue);
consumer.setMessageListener(this);

/*QueueBrowser qb= session.createBrowser(queue);*/

log.info("The default destination is " + template.getDefaultDestinationName().toString());

} catch(JMSException e) {
log.info("In the customer start error" + e.getMessage());
}
}

public void destroy() throws JMSException {
consumer.setMessageListener(null);
consumer.close();
consumer = null;
connection.close();
connection = null;
}

public void onMessage(Message message) {
super.onMessage(message);
try {
//log.info("receiving message :" + ((ObjectMessage)message).getObject().toString());
if(message instanceof TextMessage){
log.info("The txt msg is: " + ((TextMessage)message).getText());
}
if(message instanceof ObjectMessage){
//log.info("The object msg is: " + ((ObjectMessage)message).getObject().toString());
}

message.acknowledge();
}
catch (JMSException e) {
log.info("Failed to acknowledge: " );
}
}
}
 
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