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.");
}
}