1.maven依赖
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>4.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>RELEASE</version>
</dependency>
<!-- alibaba工具 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.29</version>
</dependency>
2.application.yml配置
apache:
rocketmq:
consumer:
pushConsumer: tt
producer:
producerGroup: tt
namesrvAddr: 127.0.0.1:9876
3.producer
import org.apache.commons.lang3.time.StopWatch;
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 javax.annotation.PostConstruct;
import java.io.UnsupportedEncodingException;
@Component
public class Producer {
@Value("${apache.rocketmq.producer.producerGroup}")
private String producerGroup;
private DefaultMQProducer producer;
@Value("${apache.rocketmq.namesrvAddr}")
private String namesrvAddr;
@PostConstruct
public void defaultMQProducer() {
//生产者的组名
producer= new DefaultMQProducer(producerGroup);
//指定NameServer地址,多个地址以 ; 隔开
producer.setNamesrvAddr(namesrvAddr);
producer.setVipChannelEnabled(false);
try {
producer.start();
System.out.println("-------->:producer启动了");
} catch (MQClientException e) {
e.printStackTrace();
}
}
public String send(String topic,String tags,String body) throws InterruptedException, RemotingException, MQClientException, MQBrokerException, UnsupportedEncodingException {
Message message = new Message(topic, tags, body.getBytes(RemotingHelper.DEFAULT_CHARSET));
StopWatch stop = new StopWatch();
stop.start();
SendResult result = producer.send(message);
System.out.println("发送响应:MsgId:" + result.getMsgId() + ",发送状态:" + result.getSendStatus());
stop.stop();
return "{\"MsgId\":\""+result.getMsgId()+"\"}";
}
}
4.consumer
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.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.Message;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
@Component
public class Consumer implements CommandLineRunner {
/**
* 消费者
*/
@Value("${apache.rocketmq.consumer.pushConsumer}")
private String pushConsumer;
/**
* NameServer 地址
*/
@Value("${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("addTopic", "addMsg");
// 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();
}
}
@Override
public void run(String... args) throws Exception {
this.messageListener();
}
}
5.测试
@RequestMapping("/addMsg")
public String addMsg(String msg){
try {
return producer.send("addTopic","addMsg",msg);
} catch (Exception e) {
e.printStackTrace();
}
return "ERROR";
}