JMS Api Demo

jms.JMSFactory

Java代码

1. package jms;
2. import javax.jms.TopicConnectionFactory;
3. import org.apache.activemq.ActiveMQConnectionFactory;
4. public class JMSFactory {
5. private static ActiveMQConnectionFactory activeMQConnectionFactory =new ActiveMQConnectionFactory(ActiveMQConnectionFactory.DEFAULT_BROKER_BIND_URL);
7. public static TopicConnectionFactory getActiveMQConnectionFactory(){
8. return activeMQConnectionFactory;
9. }
10. }

package jms;import javax.jms.TopicConnectionFactory;import org.apache.activemq.ActiveMQConnectionFactory;public class JMSFactory {private static ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(ActiveMQConnectionFactory.DEFAULT_BROKER_BIND_URL);public static TopicConnectionFactory getActiveMQConnectionFactory(){return activeMQConnectionFactory;}}

jms.JMSMessageActor

Java代码

1. package jms;
2. import javax.jms.*;
3. public abstract class JMSMessageActor {
4. protected String name=null;
5. protected String defaultQueueName="defalut-queue";
6. protected String defaultTopicName="defalut-topic";
7. protected final int DESTIONATION_TYPE_TOPIC=1;
8. protected final int DESTIONATION_TYPE_QUEUE=2;
9. public JMSMessageActor(String name) {
10. this.name = name;
11. }
12. public abstract Destination getDestination();
13. public Destination createDefaultDestination(int type){
14. Destination dest=null;
15. switch(type){
16. case DESTIONATION_TYPE_TOPIC:
17. dest=new Topic(){
18. @Override
19. public String getTopicName() throws JMSException {
20. return defaultTopicName;
21. }};break;
22. case DESTIONATION_TYPE_QUEUE:
23. dest=new Queue(){
24. @Override
25. public String getQueueName() throws JMSException {
26. return defaultQueueName;
27. }};
28. break;
29. }
30. return dest;
31. }
32. }

package jms;import javax.jms.*;public abstract class JMSMessageActor {protected String name=null;protected String defaultQueueName="defalut-queue";protected String defaultTopicName="defalut-topic";protected final int  DESTIONATION_TYPE_TOPIC=1;protected final int DESTIONATION_TYPE_QUEUE=2;public JMSMessageActor(String name) {this.name = name;}public abstract Destination  getDestination();public Destination createDefaultDestination(int type){Destination dest=null;switch(type){case DESTIONATION_TYPE_TOPIC:dest=new Topic(){@Overridepublic String getTopicName() throws JMSException {return defaultTopicName;}};break;case DESTIONATION_TYPE_QUEUE:dest=new Queue(){@Overridepublic String getQueueName() throws JMSException {return defaultQueueName;}};break;}return dest;}}

jms.JMSMessageConsumer

Java代码

1. package jms;
2. import javax.jms.*;
3. public abstract class JMSMessageConsumer extends JMSMessageActorimplements Runnable,MessageListener{
4. public JMSMessageConsumer(String name){
5. super(name);
6. }
7. @Override
8. public void onMessage(Message message) {
9. synchronized(JMSMessageConsumer.class){
10. System.out.println("##### consumer "+ name +" receive message. #####");
11. System.out.println(JMSUtil.formatMessage(message));
12. }
13. }
14. @Override
15. public void run() {
16. try{
17. // get topic connect factory
18. ConnectionFactory factory = JMSFactory.getActiveMQConnectionFactory();
19. // create connection
20. Connection connection = factory.createConnection();
21. // create unique client id for the connection
22. connection.setClientID("consumer_connection_"+name);
23. // if the connection start method is not invoked , the consumer may be not receive the message
24. connection.start();
25. // create session
26. Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
27. Destination destination=getDestination();
28. // if the destination is an instance of Queue ,
29. // it will receive the message from the queue,
30. // in other words the message can be consumed one time by one consumer
31. // and the message is durable.
32. // if the destination is an instance of Topic ,
33. // the subscribers of the Topic can receive the message,
34. // but the message is non durable.
35. MessageConsumer consumer =session.createConsumer(destination,null,true);
36. // if the destination is an instance of Topic,
37. // specify the clientID of the connection
38. // and create MessageConsumer like this,
39. // the subscribers of the Topic can receive the message
40. // and the message is durable.
41. //consumer =session.createDurableSubscriber((Topic)destination, "durable topic", null, true);
42. consumer.setMessageListener(this);
43. }catch(Exception e){
44. throw new RuntimeException(e);
45. }
46. }
47. }