activemq Advanced Use

package top.activemq.util.performance;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQMessageProducer;
import org.apache.activemq.AsyncCallback;

import java.util.UUID; import javax.jms.Connection; import javax.jms.JMSException; import javax.jms.Queue; import javax.jms.Session; import javax.jms.TextMessage; /** * description:异步投递 * * //1、在brokerUri后跟jms.useAsyncSend参数 * cf = new ActiveMQConnectionFactory("tcp://locahost:61616?jms.useAsyncSend=true"); * //2、设置connectionFactory的useAsyncSend属性，此时要注意ConnectionFactory的类型必须是ActiveMQConnectionFactory * ((ActiveMQConnectionFactory)connectionFactory).setUseAsyncSend(true); * //3、设置Connection的useAsyncSend属性，此时要注意Connection的类型必须是ActiveMQConnection * ((ActiveMQConnection)connection).setUseAsyncSend(true); * * @author: he QQ: 905845006 * @email: [email protected] * @date: 2020/3/21 6:32 PM */ public class MQProducer { private static final String BROKER_URL = "tcp://localhost:61616"; private static final String QUEUE_NAME = "queue-async"; public static void main(String args[]) throws JMSException { //注意此处ConnectionFactory的类型必须是ActiveMQConnectionFactory ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL); factory.setUseAsyncSend(true);//设置为异步投递，默认即为true Connection connection = factory.createConnection(); connection.start(); //创建session Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //创建目的地 Queue queue = session.createQueue(QUEUE_NAME); //创建消息生产者 ActiveMQMessageProducer producer = (ActiveMQMessageProducer) session.createProducer(queue); try { for (int i = 0; i < 3; i++) { TextMessage textMessage = session.createTextMessage("msg" + i); textMessage.setJMSMessageID(UUID.randomUUID().toString()+"--orderCode"); //发送消息时传入回调 producer.send(textMessage, new AsyncCallback() { @Override public void onSuccess() { try { System.out.println(textMessage.getJMSMessageID() + " 发送成功!"); } catch (JMSException e) { e.printStackTrace(); } } @Override public void onException(JMSException e) { try { System.out.println(textMessage.getJMSMessageID() + " 发送失败!"); } catch (JMSException je) { je.printStackTrace(); } } }); } //提交事务 //session.commit(); } catch (Exception e) { //回滚事务 //session.rollback(); } finally { producer.close(); session.close(); connection.close(); } } } 

package top.activemq.util.performance;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQMessageProducer;
import org.apache.activemq.ScheduledMessage;

import javax.jms.Connection;
import javax.jms.JMSException; import javax.jms.Queue; import javax.jms.Session; import javax.jms.TextMessage; /** * description:延迟投递 * * @author: he QQ: 905845006 * @email: [email protected] * @date: 2020/3/21 6:34 PM */ public class MQProducer1 { private static final String BROKER_URL = "tcp://localhost:61616"; private static final String QUEUE_NAME = "queue-delay"; public static void main(String args[]) throws JMSException { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL); Connection connection = factory.createConnection(); connection.start(); //创建session Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //创建目的地 Queue queue = session.createQueue(QUEUE_NAME); //创建消息生产者 ActiveMQMessageProducer producer = (ActiveMQMessageProducer) session.createProducer(queue); try { TextMessage textMessage = session.createTextMessage("delayMsg"); //设置和延迟投递相关的消息属性 textMessage.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_DELAY, 5000);//延迟5秒投递 textMessage.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_PERIOD, 2000);//每隔2秒投递1次这个消息 textMessage.setIntProperty(ScheduledMessage.AMQ_SCHEDULED_REPEAT, 3);//重复投递3次，加上正常投递的1次，共4次 //发送消息 producer.send(textMessage); //提交事务 //session.commit(); } catch (Exception e) { //回滚事务 //session.rollback(); } finally { producer.close(); session.close(); connection.close(); } } } 

package top.activemq.util.performance;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQMessageProducer;
import org.apache.activemq.ScheduledMessage;

import javax.jms.Connection;
import javax.jms.JMSException; import javax.jms.Queue; import javax.jms.Session; import javax.jms.TextMessage; /** * description:定时投递，使用CRON * * @author: he QQ: 905845006 * @email: [email protected] * @date: 2020/3/21 6:35 PM */ public class MQProducer2 { private static final String BROKER_URL = "tcp://localhost:61616"; private static final String QUEUE_NAME = "queue-delay"; public static void main(String args[]) throws JMSException { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL); Connection connection = factory.createConnection(); connection.start(); //创建session Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //创建目的地 Queue queue = session.createQueue(QUEUE_NAME); //创建消息生产者 ActiveMQMessageProducer producer = (ActiveMQMessageProducer) session.createProducer(queue); try { TextMessage textMessage = session.createTextMessage("delayMsgcron"); //textMessage.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_ID, UUID.randomUUID().toString()); //设置和定时投递的CRON textMessage.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_CRON,"* * * * *"); //发送消息 producer.send(textMessage); //提交事务 //session.commit(); } catch (Exception e) { //回滚事务 //session.rollback(); } finally { producer.close(); session.close(); connection.close(); } } } 

package top.activemq.util.queue;

/**
 * description:死信
 *
 * @author: he QQ:       905845006
 * @email: [email protected]
 * @date: 2020/3/21 7:51 PM */ import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.ScheduledMessage; import javax.jms.*; public class JmsProducer_Redelivery { public static final String ACTIVEMQ_URL = "tcp://localhost:61616"; public static final String QUEUE_NAME = "Redelivery"; public static void main(String[] args) throws JMSException { // 创建连接工厂，按照给定的url地址采用默认的用户名和密码 ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(ACTIVEMQ_URL); // 通过连接工厂，获取Connection并启动 Connection connection = activeMQConnectionFactory.createConnection(); connection.start(); // 创建Session Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); // 创建目的地（目的地有两个子接口，分别是Queue和Topic） Queue queue = session.createQueue(QUEUE_NAME); // 创建消息生产者，生产的消息放到queue中 MessageProducer messageProducer = session.createProducer(queue); // 使用messageProducer生产消息发送到队列中 for (int i = 0; i < 3; i++) { // 创建一条消息，可以理解成字符串 TextMessage textMessage = session.createTextMessage("message-" + i); messageProducer.send(textMessage); } // 按照资源打开的相反顺序关闭资源 messageProducer.close(); session.close(); connection.close(); } } 

package top.activemq.util.queue;

/**
 * description: 死信
 *
 * @author: he QQ:       905845006
 * @email: [email protected]
 * @date: 2020/3/21 7:51 PM */ import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.RedeliveryPolicy; import javax.jms.*; public class JmsConsumer_Redelivery { public static final String ACTIVEMQ_URL = "tcp://localhost:61616"; public static final String QUEUE_NAME = "Redelivery"; public static void main(String[] args) throws JMSException { // 创建连接工厂，按照给定的url地址采用默认的用户名和密码 ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(ACTIVEMQ_URL); // 通过连接工厂，获取Connection并启动 Connection connection = activeMQConnectionFactory.createConnection(); RedeliveryPolicy redeliveryPolicy = new RedeliveryPolicy(); redeliveryPolicy.setMaximumRedeliveries(3);// 修改重发次数为3次 activeMQConnectionFactory.setRedeliveryPolicy(redeliveryPolicy);// 将重发策略设置到ConnectionFactory中 connection.start(); // 创建Session Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE); // 创建目的地（目的地有两个子接口，分别是Queue和Topic） Queue queue = session.createQueue(QUEUE_NAME); // 创建消费者，指明从queue取消息 MessageConsumer messageConsumer = session.createConsumer(queue); // 手动修改RedeliveryPolicy（重发策略） while (true) { // 因为向队列中存放的是TextMessage的实例，所以取出来的时候，也要用TextMessage的实例来接收 // 这里的receive()方法表示一直等待，如果给它传一个long类型的毫秒数，表示consumer等待超时时间 TextMessage textMessage = (TextMessage) messageConsumer.receive(1000L); if (textMessage != null) { System.out.println("消费者消费：" + textMessage.getText()); } else { break; } } // 上面开启了事务，正常情况下，必须执行commit();这里模拟出问题的情况，注释掉commit(); // session.commit(); // 按照资源打开的相反顺序关闭资源 messageConsumer.close(); session.close(); connection.close(); } } 

  Source: zinc smell Network