Springboot RocketMq实现过程详解

首先，在虚拟机上安装rocketmq和rocketMq可视化控制，安装不做描述。

1、pom.xml文件添加依赖

mq的版本与连接的rocketmq版本保持一致

<dependency> <groupId>org.apache.rocketmq</groupId> <artifactId>rocketmq-remoting</artifactId> <version>4.4.0</version> </dependency>

2、yml文件添加rocketmq配置

apache: rocketmq: #消费者的配置 consumer: pushConsumer: myConsumer #生产者的配置 producer: producerGroup: myGroup namesrvAddr: 192.168.233.128:9876

3、生产者类RocketProducer

package com.zp.springbootdemo.rocketmq;import com.alibaba.fastjson.JSONObject;import com.sun.org.apache.xpath.internal.objects.XString;import org.apache.rocketmq.client.exception.MQBrokerException;import org.apache.rocketmq.client.exception.MQClientException;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;import org.apache.rocketmq.remoting.exception.RemotingException;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import org.springframework.util.StopWatch;import javax.annotation.PostConstruct;import java.io.UnsupportedEncodingException;/** * @Author zp * @Description rocketmq生产者 * @Date 22:06 2020/5/22 * @Param * @return **/@Componentpublic class RocketProducer { /** * 生产者的组名 */ @Value('${apache.rocketmq.producer.producerGroup}') private String producerGroup; /** * NameServer 地址 */ @Value('${apache.rocketmq.namesrvAddr}') private String namesrvAddr; private DefaultMQProducer defaultMQProducer; @PostConstruct public void defaultMQProducer(){ //生产者的组名 defaultMQProducer = new DefaultMQProducer(producerGroup); defaultMQProducer.setNamesrvAddr(namesrvAddr); defaultMQProducer.setVipChannelEnabled(false); try { defaultMQProducer.start(); System.out.println('producer启动了。。。'); } catch (MQClientException e) { e.printStackTrace(); } } public String send(String topic,String tags,String body) throws UnsupportedEncodingException, InterruptedException, RemotingException, MQClientException, MQBrokerException { Message message = new Message(topic,tags,body.getBytes(RemotingHelper.DEFAULT_CHARSET)); StopWatch stop = new StopWatch(); stop.start(); SendResult result = defaultMQProducer.send(message); System.out.println('发送响应：MsgId:' + result.getMsgId() + '，发送状态:' + result.getSendStatus()); JSONObject jsonObject = new JSONObject(); jsonObject.put('msgId',result.getMsgId()); jsonObject.put('sendStatus',result.getSendStatus()); stop.stop(); return jsonObject.toJSONString(); }}

4、消费者类RocketConsumer

package com.zp.springbootdemo.rocketmq;import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;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.Message;import org.apache.rocketmq.remoting.CommandCustomHeader;import org.springframework.beans.factory.annotation.Value;import org.springframework.boot.CommandLineRunner;import org.springframework.stereotype.Component;/** * @Author zp * @Description rocketmq消费者 * @Date 22:33 2020/5/22 * @Param * @return **/@Componentpublic class RockerConsumer implements CommandLineRunner { /** * 消费者 */ @Value('${apache.rocketmq.consumer.pushConsumer}') private String pushConsumer; //myConsumer /** * NameServer 地址 */ @Value('${apache.rocketmq.namesrvAddr}') private String namesrvAddr; /** * 初始化RocketMq的监听信息，渠道信息 */ public void messageListener(){ DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(pushConsumer); consumer.setNamesrvAddr(namesrvAddr); try { // 订阅PushTopic下Tag为push的消息,都订阅消息 consumer.subscribe('firstTopic','push'); // 程序第一次启动从消息队列头获取数据 consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET); //可以修改每次消费消息的数量，默认设置是每次消费一条 consumer.setConsumeMessageBatchMaxSize(1); //在此监听中消费信息，并返回消费的状态信息 consumer.registerMessageListener((MessageListenerConcurrently) (msgs,context)->{// 会把不同的消息分别放置到不同的队列中for (Message msg:msgs){ System.out.println('接收到了消息：'+new String(msg.getBody()));}return ConsumeConcurrentlyStatus.CONSUME_SUCCESS; }); consumer.start(); } catch (Exception e) { e.printStackTrace(); } } /** * Callback used to run the bean. * * @param args incoming main method arguments * @throws Exception on error */ @Override public void run(String... args) throws Exception { this.messageListener(); }}

5、controller中编写发送消息

package com.zp.springbootdemo.rocketmq;import org.apache.rocketmq.client.exception.MQBrokerException;import org.apache.rocketmq.client.exception.MQClientException;import org.apache.rocketmq.remoting.exception.RemotingException;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import java.io.UnsupportedEncodingException;@RestController@RequestMapping('/rocketMq')public class MQController { @Autowired private RocketProducer producer; @RequestMapping('/myFirstProducer') public String pushMsg(String msg){ try { System.out.println('======'+msg); return producer.send('firstTopic','push',msg); } catch (InterruptedException e) { e.printStackTrace(); } catch (RemotingException e) { e.printStackTrace(); } catch (MQClientException e) { e.printStackTrace(); } catch (MQBrokerException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return 'ERROR'; }}

6.测试

请求地址：http://127.0.0.1:8080/rocketMq/myFirstProducer?msg=hello

响应：{'msgId':'C0A8010E1A3818B4AAC2711E8CD50000','sendStatus':'SEND_OK'}

通过rocketMq可视化控制查看：

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