RocketMQ 5.1.0 在java中的使用

版本：

        当前测试版本：springBoot 2.3.9、 RocketMQ 5.1.0

Maven或Gradle RocketMQ的依赖项：

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-client</artifactId>
    <version>5.0.5</version>
</dependency>

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-spring-boot-starter</artifactId>
    <version>2.2.3</version>
</dependency>

1、生产者

# RocketMQ Producer配置
rocketmq.namesrv.addr=119.3.81.109:9876
rocketmq.producer.group=BREAD_ORDER_GROUP
rocketmq.topic =Tseng-Dev

import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.common.message.Message;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class RocketMQProducer {

    @Value("${rocketmq.producer.group}")
    private String producerGroup;

    @Value("${rocketmq.namesrv.addr}")
    private String namesrvAddr;

    public void sendMessage(String topic, String message) throws Exception {
        DefaultMQProducer producer = new DefaultMQProducer(producerGroup);
        producer.setNamesrvAddr(namesrvAddr);
        producer.start();
        Message rocketMsg = new Message(topic, message.getBytes());
        producer.send(rocketMsg);
        producer.shutdown();
    }
}

    @Autowired
    private RocketMQProducer rocketMQProducer;
    @Value("${rocketmq.topic}")
    private String topic;

    @GetMapping("/send-message")
    public String sendMessage() {
        try {
            String message = "Hello, RocketMQ!";
            rocketMQProducer.sendMessage(topic, message);
            return "Message sent successfully";
        } catch (Exception e) {
            e.printStackTrace();
            return "Failed to send message";
        }
    }

2、消费者

# RocketMQ Consumer配置
rocketmq.namesrv.addr=119.3.81.109:9876
rocketmq.consumer.group=BREAD_ORDER_GROUP
rocketmq.topic =Tseng-Dev

import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;

/**
 * @author：Tseng
 * @description 消费者
 * @since: JDK1.8
 * @version: 1.0
 * @date: 2023-07-17
 * @Copyright © 2023
 */
@Component
public class RocketMQConsumer {

    @Value("${rocketmq.consumer.group}")
    private String consumerGroup;

    @Value("${rocketmq.namesrv.addr}")
    private String namesrvAddr;

    @Value("${rocketmq.topic}")
    private String topic;

    private final RocketMQMessageListener messageListener;

    @Autowired
    public RocketMQConsumer(RocketMQMessageListener messageListener) {
        this.messageListener = messageListener;
    }

    @PostConstruct
    public void start() throws Exception {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(consumerGroup);
        consumer.setNamesrvAddr(namesrvAddr);
        consumer.subscribe(topic, "*");
        consumer.registerMessageListener((MessageListenerConcurrently) (msgs, context) -> {
            return messageListener.consumeMessage(msgs, context);
        });
        consumer.start();
    }
}

import lombok.extern.slf4j.Slf4j;
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.common.message.MessageExt;
import org.springframework.stereotype.Component;

import java.nio.charset.StandardCharsets;
import java.util.List;

@Slf4j
@Component
public class RocketMQMessageListener implements MessageListenerConcurrently {

    @Override
    public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
        for (MessageExt msg : msgs) {
            String topic = msg.getTopic();
            String message = new String(msg.getBody(), StandardCharsets.UTF_8);
            String tags = msg.getTags();
            String keys = msg.getKeys();
            log.info("Received message: topic={}, tags={}, keys={}, message={}", topic, tags, keys, message);
            // 处理接收到的消息
        }
        return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
    }
}

3、测试

发送

结果