RocketMQ集群消息收发测试全纪录

    <dependency>
      <groupId>org.apache.rocketmq</groupId>
      <artifactId>rocketmq-client</artifactId>
      <version>4.3.0</version>
    </dependency>

package com.my.maven.rocketmq;
​
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;
​
public class Producer {
    public static void main(String[] args) throws Exception {
        //Instantiate with a producer group name.
        DefaultMQProducer producer = new
            DefaultMQProducer("group_test_123");
        // Specify name server addresses.
        producer.setNamesrvAddr("172.16.7.91:9876;172.16.7.92:9876");
        producer.setRetryTimesWhenSendAsyncFailed(2);
        //Launch the instance.
        producer.start();
        for (int i = 0; i < 100; i++) {
            //Create a message instance, specifying topic, tag and message body.
            Message msg = new Message("topic_test_123" /* Topic */,
                "TagA" /* Tag */,
                ("Message Test" +
                    i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
            );
            //Call send message to deliver message to one of brokers.
            SendResult sendResult = producer.send(msg);
            System.out.printf("%s%n", sendResult);
        }
        //Shut down once the producer instance is not longer in use.
        producer.shutdown();
    }
}
​

package com.my.maven.rocketmq;
​
import java.util.List;
​
import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageExt;
​
public class Consumer {
​
    public static void main(String[] args) throws InterruptedException,
            MQClientException {
​
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(
                "group_test_123");
        consumer.setNamesrvAddr("172.16.7.91:9876;172.16.7.92:9876");
​
        consumer.subscribe("topic_test_123", "TagA || TagB");
        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
        consumer.registerMessageListener(new MessageListenerConcurrently() {
​
            public ConsumeConcurrentlyStatus consumeMessage(
                    List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName()
                        + " Receive New Messages: " + msgs);
                MessageExt msg = msgs.get(0);
                if (msg.getTopic().equals("topic_test_123")) {
                    if (msg.getTags() != null && msg.getTags().equals("TagA")) {
                        // 获取消息体
                        String message = new String(msg.getBody());
                        System.out.println("receive TagA message:" + message);
                    } else if (msg.getTags() != null
                            && msg.getTags().equals("TagB")) {
                        // 获取消息体
                        String message = new String(msg.getBody());
                        System.out.println("receive TagB message:" + message);
                    }
​
                }
                // 成功
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        consumer.start();
        System.out.println("Consumer Started.");
    }
​
}