第一步:导入依赖
<dependency>
<groupId>com.alibaba.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>3.0.10</version>
</dependency>
<dependency>
<groupId>com.alibaba.rocketmq</groupId>
<artifactId>rocketmq-all</artifactId>
<version>3.0.10</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
第二步:创建生产者
package com.wish;
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;
public class Producer {
public static void main(String[] args) throws MQClientException {
//创建一个消息的生产者
// producerGroup:一般发送同样消息的Producer,归为同一个Group,应用必须设置,并保证命名唯一
DefaultMQProducer producer = new DefaultMQProducer("rmq-group");
//设置名称srv地址
producer.setNamesrvAddr("192.168.152.55:9876;192.168.152.66:9876");
//实例名称
producer.setInstanceName("producer");
//启动
producer.start();
try {
for (int i = 0; i < 10; i++) {
Thread.sleep(1000); // 每秒发送一次MQ
Message msg = new Message("itmayiedu-topic", // topic 主题名称
"TagA", // tag 临时值
("itmayiedu-"+i).getBytes()// body 内容
);
//send()发送
SendResult sendResult = producer.send(msg);
//SendResult:发送消息结果
System.out.println(sendResult.toString());
}
} catch (Exception e) {
e.printStackTrace();
}
//关掉
producer.shutdown();
}
}
第三步:创建消费者
package com.wish;
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.client.exception.MQClientException;
import com.alibaba.rocketmq.common.message.MessageExt;
import java.util.List;
public class Consumer {
public static void main(String[] args) throws MQClientException {
//创建一个消费者
//consumerGroup:做同样事情的Consumer归为同一个Group,应用必须设置,并保证命名唯一
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("rmq-group");
//设置名称srv地址
consumer.setNamesrvAddr("192.168.152.55:9876;192.168.152.66:9876");
//实例名称
consumer.setInstanceName("consumer");
//实现订阅
consumer.subscribe("itmayiedu-topic", "TagA");
//注册消息监听器
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
for (MessageExt msg : msgs) {
System.out.println(msg.getMsgId()+"---"+new String(msg.getBody()));
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
//启动消费者
consumer.start();
System.out.println("Consumer Started.");
}
}
第四步:分别启动消费者和生产者,查看浏览器