Two modes: queue mode / Themes
pom.xml
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-all</artifactId>
<version>5.15.9</version>
</dependency>
Queue mode, in fact, eating patterns.
Such as the production side sent a message to activeMQ server 10, but this time with a plurality of consumer, then the consumer will divide these 10 messages, a message is only to obtain a consumer.
Theme is subscription model.
For example, producers made 10 messages at a time when there are more than a consumer, then the consumer can get more than 10 this news, just like the public subscription number so.
Queue Mode:
1. First run twice TestConsumer class to start two different consumers
2. Run once TestProducer, to start the producer
Producers to produce 100, two consumer divide
consumer:
public class TestConsumer { // service address, the default port 61616 Private static Final String url = "tcp: //127.0.0.1: 61616" ; // The name of the message consumption Private static Final String topicName = "queue_style" ; // consumers may be more, in order to distinguish between different consumers, to create a random name Private static Final String consumerName = "consumer-" + RandomUtil.randomString (5 ); public static void main (String [] args) throws JMSException { // 0.5 port to determine whether to activate the Active MQ server ActiveMQUtil.checkServer (); System.out.printf ("% s consumer launch of the n-%." , consumerName); // 1. create ConnectiongFactory, binding address ConnectionFactory = Factory's new new ActiveMQConnectionFactory (url); // 2. Create a Connection Connection Connection = factory.createConnection (); / / 3. start connection connection.start (); // 4. Create a session the session = connection.createSession the session ( to false , Session.AUTO_ACKNOWLEDGE); // 5. The Create an object (subject type) the Destination Where do you want = session.createQueue (topicName ); // 6. create a consumer MessageConsumer consumer =session.createConsumer(destination); //7.创建一个监听器 consumer.setMessageListener(new MessageListener() { public void onMessage(Message arg0) { // TODO Auto-generated method stub TextMessage textMessage=(TextMessage)arg0; try { System.out.println(consumerName +" 接收消息："+textMessage.getText()); } catch (JMSException e) { // TODO Auto-generated catch block e.printStackTrace (); } } }); // 8 because they do not know when, so I can not take the initiative to close, not closed, has been in a listening state // Connection.close (); } }
Producer:
public class TestProducer { // service address, the default port 61616 Private static Final String url = "tcp: //127.0.0.1: 61616" ; // name of the message sent by the Private static Final String topicName = "queue_style" ; public static void main (String [] args) throws a JMSException { // of 0. the first port determines whether to activate the Active MQ server ActiveMQUtil.checkServer (); // 1. Create ConnectiongFactory, binding address the ConnectionFactory Factory = new new ActiveMQConnectionFactory (URL); / /2. Create Connection Connection Connection = factory.createConnection (); // 3. Start connection connection.start (); // 4. Create a session the Session = connection.createSession the session ( to false , Session.AUTO_ACKNOWLEDGE); // 5. The Create a target (queue type) the Destination Where do you want = session.createQueue (topicName); // 6. The producer creates a the MessageProducer producer = session.createProducer (Where do you want); for ( int I = 0; I <100; I ++ ) { // 7. create a message TextMessage textMessage = session.createTextMessage ( "queue message -" + I); // 8. The send message producer.send (textMessage); System.out.println ( "Send:" + textMessage.getText ()); } // 7. close the connection Connection.close (); } }
2 consumer:
Producers to produce:
Themes:
Consumers, producers,
public class TestConsumer { //服务地址，端口默认61616 private static final String url="tcp://127.0.0.1:61616"; //这次消费的消息名称 private static final String topicName="topic_style"; //消费者有可能是多个，为了区分不同的消费者，为其创建随机名称 private static final String consumerName="consumer-" + RandomUtil.randomString(5); public static void main(String[] args) throws JMSException { //0. 先判断端口是否启动了 Active MQ 服务器 ActiveMQUtil.checkServer(); System.out.printf("%s 消费者启动了。 %n", consumerName); //1.创建ConnectiongFactory,绑定地址 ConnectionFactory factory=new ActiveMQConnectionFactory(url); //2.创建Connection Connection connection= factory.createConnection(); //3.启动连接 connection.start(); //4.创建会话 Session session=connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //5.创建一个目标 （主题类型） Destination destination=session.createTopic(topicName); //6.创建一个消费者 MessageConsumer consumer=session.createConsumer(destination); //7.创建一个监听器 consumer.setMessageListener(new MessageListener() { public void onMessage(Message arg0) { // TODO Auto-generated method stub TextMessage textMessage=(TextMessage)arg0; try { System.out.println(consumerName +" 接收消息："+textMessage.getText()); } catch (JMSException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); //8. 因为不知道什么时候有，所以没法主动关闭，就不关闭了，一直处于监听状态 //connection.close(); } }
public class TestProducer { //服务地址，端口默认61616 private static final String url="tcp://127.0.0.1:61616"; //这次发送的消息名称 private static final String topicName="topic_style"; public static void main(String[] args) throws JMSException { //0. 先判断端口是否启动了 Active MQ 服务器 ActiveMQUtil.checkServer(); //1.创建ConnectiongFactory,绑定地址 ConnectionFactory factory=new ActiveMQConnectionFactory(url); //2.创建Connection Connection connection= factory.createConnection(); //3.启动连接 connection.start(); //4.创建会话 Session session=connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //5.创建一个目标 (主题类型) Destination destination=session.createTopic(topicName); //6.创建一个生产者 MessageProducer producer=session.createProducer(destination); for (int i = 0; i < 100; i++) { //7.创建消息 TextMessage textMessage=session.createTextMessage("主题消息-"+i); //8.发送消息 producer.send(textMessage); System.out.println("发送："+textMessage.getText()); } //7. 关闭连接 connection.close(); } }
生产者生产100个，两个消费者都分别接受了100个
