1、生产者:
package com.ebways.mq.test.mq; import com.alibaba.rocketmq.client.exception.MQClientException; import com.alibaba.rocketmq.client.producer.DefaultMQProducer; import com.alibaba.rocketmq.client.producer.SendResult; import com.alibaba.rocketmq.common.message.Message; import java.util.concurrent.TimeUnit; /** * Created by gmq on 2016/10/13 0013. */ public class NewRocketProductor { public static void main(String[] args) throws MQClientException, Exception { /** * 一个应用创建一个Producer,由应用来维护此对象,可以设置为全局对象或者单例<br> * 注意:ProducerGroupName需要由应用来保证唯一<br> * ProducerGroup这个概念发送普通的消息时,作用不大,但是发送分布式事务消息时,比较关键, * 因为服务器会回查这个Group下的任意一个Producer */ DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName"); producer.setNamesrvAddr("192.168.100.190:9876"); producer.setInstanceName("Producer"); /** * Producer对象在使用之前必须要调用start初始化,初始化一次即可<br> * 注意:切记不可以在每次发送消息时,都调用start方法 */ producer.start(); /** * 下面这段代码表明一个Producer对象可以发送多个topic,多个tag的消息。 * 注意:send方法是同步调用,只要不抛异常就标识成功。但是发送成功也可会有多种状态,<br> * 例如消息写入Master成功,但是Slave不成功,这种情况消息属于成功,但是对于个别应用如果对消息可靠性要求极高,<br> * 需要对这种情况做处理。另外,消息可能会存在发送失败的情况,失败重试由应用来处理。 */ for (int i = 0; i < 10; i++) { try { { Message msg = new Message("TopicTest1",// topic "TagA",// tag "OrderID001",// key ("Hello MetaQ").getBytes());// body SendResult sendResult = producer.send(msg); System.out.println(sendResult); } { Message msg = new Message("TopicTest2",// topic "TagB",// tag "OrderID0034",// key ("Hello MetaQ").getBytes());// body SendResult sendResult = producer.send(msg); System.out.println(sendResult); } { Message msg = new Message("TopicTest3",// topic "TagC",// tag "OrderID061",// key ("Hello MetaQ").getBytes());// body SendResult sendResult = producer.send(msg); System.out.println(sendResult); } } catch (Exception e) { e.printStackTrace(); } TimeUnit.MILLISECONDS.sleep(1000); } /** * 应用退出时,要调用shutdown来清理资源,关闭网络连接,从MetaQ服务器上注销自己 * 注意:我们建议应用在JBOSS、Tomcat等容器的退出钩子里调用shutdown方法 */ producer.shutdown(); } }
2、消费者
package com.ebways.mq.test.mq; import com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer; import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext; import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus; import com.alibaba.rocketmq.client.consumer.listener.MessageListenerConcurrently; import com.alibaba.rocketmq.common.message.MessageExt; import java.util.List; /** * Created by Administrator on 2016/10/14 0014. */ public class NewRocketConsumer { public static void main(String[] args) throws Exception { /** * 一个应用创建一个Consumer,由应用来维护此对象,可以设置为全局对象或者单例<br> * 注意:ConsumerGroupName需要由应用来保证唯一 */ DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("ConsumerGroupName"); consumer.setNamesrvAddr("192.168.100.190:9876"); consumer.setInstanceName("Consumber"); /** * 订阅指定topic下tags分别等于TagA或TagC或TagD */ consumer.subscribe("TopicTest1", "TagA || TagC || TagD"); /** * 订阅指定topic下所有消息<br> * 注意:一个consumer对象可以订阅多个topic */ consumer.subscribe("TopicTest2", "*"); consumer.registerMessageListener(new MessageListenerConcurrently() { /** * 默认msgs里只有一条消息,可以通过设置consumeMessageBatchMaxSize参数来批量接收消息 */ @Override public ConsumeConcurrentlyStatus consumeMessage( List<MessageExt> msgs, ConsumeConcurrentlyContext context) { System.err.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs.size()); MessageExt msg = msgs.get(0); if (msg.getTopic().equals("TopicTest1")) { // 执行TopicTest1的消费逻辑 if (msg.getTags() != null && msg.getTags().equals("TagA")) { // 执行TagA的消费 System.err.println(new String(msg.getBody())); } else if (msg.getTags() != null && msg.getTags().equals("TagC")) { // 执行TagC的消费 System.err.println("TagC:====="); System.err.println(new String(msg.getBody())); } else if (msg.getTags() != null && msg.getTags().equals("TagD")) { // 执行TagD的消费 System.err.println("TagD:====="); System.err.println(new String(msg.getBody())); } } else if (msg.getTopic().equals("TopicTest2")) { System.err.println("TopicTest2:====="); System.err.println(new String(msg.getBody())); } return ConsumeConcurrentlyStatus.CONSUME_SUCCESS; } }); /** * Consumer对象在使用之前必须要调用start初始化,初始化一次即可<br> */ consumer.start(); System.err.println("Consumer Started."); } }