activemq有两种消息模式，一种是p2p，一种是pub。其中p2p是1对1，pub是1对多。这里就以这两种的发布和访问做demo。
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* p2p(point-to-point)的消息发送和接收<br>
* 注意事项:<br>
* 1.点对点，接收者为一人，发送者也为一人<br>
* 2.先启动send或者先启动receive都ok
* @author zy
*
*/
public class SimpleMessageSendandReceiveApp {
public static final String user = "system"; // conf/credentials.properties下的配置
public static final String password = "manager";
public static final String url = "tcp://localhost:61616";// conf/activemq.xml-transportConnectors节点的openwire子节点
public static final String queueName = "test_queue"; // 在localhost:8161/admin中创建的queue
public static final String messageBody = "Hello JMS!";// 发送jms的内容，一般是textMessage或者ObjectMessage
public static final boolean transacted = false; // 是否使用事务
public static final boolean persistent = false;//提交方式，true/PERSISTENT 持久保留消息，以保证消息不会因为jms provider的失败而丢失 false/NON_PERSISTENT 不要求保持持久
public static void main(String[] args) {
sendMessage();
// receiveMessage();
}
/**
* 发送消息
*/
public static void sendMessage(){
Connection connection = null;
Session session = null;
try {
// create the connection
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);
connection = connectionFactory.createConnection();
connection.start();
// create the session
session = connection.createSession(transacted,Session.AUTO_ACKNOWLEDGE);// Session.AUTO_ACKNOWLEDGE-->consumer.receive()会话确认接收
Destination destination = session.createQueue(queueName);
// create the producer
MessageProducer producer = session.createProducer(destination);
if (persistent) {
producer.setDeliveryMode(DeliveryMode.PERSISTENT);
} else {
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
}
// create text message
Message message = session.createTextMessage(messageBody);
// send the message
producer.send(message);
System.out.println("Send message: " + ((TextMessage) message).getText());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
// close session and connection
if (session != null) {
session.close();
}
if (connection != null) {
connection.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 接收消息
*/
public static void receiveMessage(){
Connection connection = null;
Session session = null;
try {
// create the connection
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);
connection = connectionFactory.createConnection();
connection.start();
// create the session
session = connection.createSession(transacted,Session.AUTO_ACKNOWLEDGE);// Session.AUTO_ACKNOWLEDGE-->consumer.receive()会话确认接收
Destination destination = session.createQueue(queueName);
// create the producer
MessageProducer producer = session.createProducer(destination);
if (persistent) {
producer.setDeliveryMode(DeliveryMode.PERSISTENT);
} else {
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
}
// create the consumer
MessageConsumer consumer = session.createConsumer(destination);
// blocking till receive the message
Message recvMessage = consumer.receive();
System.out.println("Receive message: " + ((TextMessage) recvMessage).getText());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
// close session and connection
if (session != null) {
session.close();
}
if (connection != null) {
connection.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* 发布模式(pub)，一对多<br>
* 注意事项:<br>
* 1.一对多，接收者为多个<br>
* 2.注册接收的时间 >= 消息发送时间，才可接收消息
* @author zy
*
*/
public class TopicMessageSendAndReceiveApp {
public static final String user = "system"; // conf/credentials.properties下的配置
public static final String password = "manager";
public static final String url = "tcp://localhost:61616";// conf/activemq.xml-transportConnectors节点的openwire子节点
public static final String queueName = "test_topic"; // 在localhost:8161/admin中创建的queue
public static final String messageBody = "Hello JMS!";// 发送jms的内容，一般是textMessage或者ObjectMessage
public static final boolean transacted = true; // 是否使用事务
public static final boolean persistent = false;//提交方式，true/PERSISTENT 持久保留消息，以保证消息不会因为jms provider的失败而丢失 false/NON_PERSISTENT 不要求保持持久
public static void main(String[] args) {
receive();
receive2();
send();
}
public static void send(){
try {
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(user, password,url);
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(queueName);
MessageProducer producer = session.createProducer(topic);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
for(int i =0;i<3;i++){
TextMessage message = session.createTextMessage();
message.setText("message_" + System.currentTimeMillis());
producer.send(message);
System.out.println("Send message: " + message.getText() + " --->" + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void receive(){
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
try {
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(queueName);
MessageConsumer consumer = session.createConsumer(topic);
consumer.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
TextMessage tm = (TextMessage) message;
try {
System.out.println("001 Received message: " + tm.getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
});
} catch (JMSException e) {
e.printStackTrace();
}
}
public static void receive2(){
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
try {
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(queueName);
MessageConsumer consumer = session.createConsumer(topic);
consumer.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
TextMessage tm = (TextMessage) message;
try {
System.out.println("002 Received message: " + tm.getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
});
} catch (JMSException e) {
e.printStackTrace();
}
}
}