RocketMQ学习（一）：简介和QuickStart

<dependencies>

<dependency>

<groupId>ch.qos.logback</groupId>

<artifactId>logback-classic</artifactId>

<version>1.0.13</version>

</dependency>

<dependency>

<groupId>ch.qos.logback</groupId>

<artifactId>logback-core</artifactId>

<version>1.0.13</version>

</dependency>

<dependency>

<groupId>com.alibaba.rocketmq</groupId>

<artifactId>rocketmq-client</artifactId>

<version>3.2.2</version>

</dependency>

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.10</version>

<scope>test</scope>

</dependency>

</dependencies>

<repositories>

<repository>

<id>nexus</id>

<name>Nexus</name>

<url>http://maven.oschina.net/content/groups/public/</url>

<releases>

<enabled>true</enabled>

</releases>

<snapshots>

<enabled>true</enabled>

</snapshots>

</repository>

</repositories>

package com.zoo.quickstart;

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;

/**

* Producer，发送消息

*

*/

public class Producer {

public static void main(String[] args) throws MQClientException, InterruptedException {

DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");

producer.setNamesrvAddr("192.168.0.109:9876");

producer.start();

for (int i = 0; i < 1000; i++) {

try {

Message msg = new Message("TopicTest",// topic

"TagA",// tag

("Hello RocketMQ " + i).getBytes()// body

);

SendResult sendResult = producer.send(msg);

System.out.println(sendResult);

Thread.sleep(3000);

}

catch (Exception e) {

e.printStackTrace();

Thread.sleep(3000);

}

}

producer.shutdown();

}

}

package com.zoo.quickstart;

import java.util.List;

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.consumer.ConsumeFromWhere;

import com.alibaba.rocketmq.common.message.MessageExt;

/**

* Consumer，订阅消息

*/

public class Consumer {

public static void main(String[] args) throws InterruptedException, MQClientException {

DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");

consumer.setNamesrvAddr("192.168.0.109:9876");

/**

* 设置Consumer第一次启动是从队列头部开始消费还是队列尾部开始消费<br>

* 如果非第一次启动，那么按照上次消费的位置继续消费

*/

consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);

consumer.subscribe("TopicTest", "*");

consumer.registerMessageListener(new MessageListenerConcurrently() {

@Override

public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,

ConsumeConcurrentlyContext context) {

System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);

System.out.println(" Receive Message Size: " + msgs.size());

return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;

}

});

consumer.start();

System.out.println("Consumer Started.");

}

}