小编这次要给大家分享的是Springboot如何实现RocketMq，文章内容丰富，感兴趣的小伙伴可以来了解一下，希望大家阅读完这篇文章之后能够有所收获。
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
**/
@Component
public 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
**/
@Component
public 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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