在Spring Boot中嵌入RocketMQ可以通过添加相应的依赖来完成。首先需要在pom.xml文件中引入spring-boot-starter-amqp依赖:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-spring-boot-starter</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
然后,在application.properties或者application.yml配置文件中设置RocketMQ连接信息:
# RocketMQ服务器地址
rocketmq.name-server=127.0.0.1:9876
# 生产者分组
rocketmq.producer.group=my-group
最后,创建消息发送者(Producer)和消息接收者(Consumer)类,并使用@Autowired注解将其自动装载到Spring容器中。示例如下:
创建消息发送者类:
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ProducerController {
@Autowired
private RocketMQTemplate rocketMQTemplate;
@GetMapping("/send")
public String send(String message) {
rocketMQTemplate.convertAndSend("test-topic", message);
return "Message: '" + message + "' sent.";
}
}
创建消息接收者类:
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Service;
@Service
@RocketMQMessageListener(topic = "test-topic", consumerGroup = "my-consumer_test-topic")
public class ConsumerService implements RocketMQListener<String> {
@Override
public void onMessage(String message) {
System.out.printf("------- StringConsumer received: %s \n", message);
}
}
当调用/send
接口时,会向"myQueue"队列发送消息;
而MessageReceiver
则会监听该队列,并处理接收到的消息。
查看控制台的输出来验证消息消费者是否可以正常接收消息