SpringBoot整合RocketMQ实现消息发送和接收的详细步骤

<dependency>
	<groupId>org.apache.rocketmq</groupId>
	<artifactId>rocketmq-spring-boot-starter</artifactId>
	<version>2.2.0</version>
</dependency>

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.java1234</groupId>
    <artifactId>rocketmq-test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>rocketmq-test</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>2.2.0</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

rocketmq:
  name-server: 127.0.0.1:9876
  producer:
    group: producer-demo1
  consumer:
    group: consumer-demo1

package com.java1234.rocketmq;

import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 消息生产者
 * @author java1234_小锋
 * @site www.java1234.com
 * @company 南通小锋网络科技有限公司
 * @create 2021-08-22 22:16
 */
@Component("producerService")
public class ProducerService {

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    /**
     * 发送简单消息
     */
    public void sendMessage(){
        for(int i=0;i<1000;i++){
            rocketMQTemplate.convertAndSend("java1234-rocketmq","rocketmq大爷，你好！"+i);
        }
    }
}

package com.java1234;

import com.java1234.rocketmq.ProducerService;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class RocketmqTestApplication {

    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(RocketmqTestApplication.class, args);
        ProducerService producerService = (ProducerService) run.getBean("producerService");
        producerService.sendMessage();
    }

}

package com.java1234.rocketmq;

import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Component;

/**
 * 消息消费者
 * @author java1234_小锋
 * @site www.java1234.com
 * @company 南通小锋网络科技有限公司
 * @create 2021-08-22 22:40
 */
@RocketMQMessageListener(topic = "java1234-rocketmq",consumerGroup ="${rocketmq.consumer.group}" )
@Component
public class ConsumerService implements RocketMQListener<String> {

    @Override
    public void onMessage(String s) {
        System.out.println("收到消息内容："+s);
    }
}