Spring Cloud Stream整合RocketMQ
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2024-06-25
![Spring Cloud Stream整合RocketMQ](https://codeleader.oss-cn-beijing.aliyuncs.com/site/image-20240601120416055.png)
Spring Cloud Stream整合RocketMQ
这里书接上回,默认你已经搭建好了RocketMQ主从异步集群,前面文章已经介绍过搭建方法。
1、Spring Cloud Stream介绍
Spring Cloud Stream是一个框架,用于构建与共享消息系统连接的高度可扩展的事件驱动微服务。
官网:https://spring.io/projects/spring-cloud-stream
![image-20240601120416055](https://codeleader.oss-cn-beijing.aliyuncs.com/site/image-20240601120416055.png)
该框架提供了一个灵活的编程模型,该模型基于已经建立和熟悉的Spring习惯用法和最佳实践,包括对持久pub/sub语义、消费者组和有状态分区的支持。
Spring Cloud Stream的核心构建块是:
Destination Binders
:负责提供与外部消息传递系统集成的组件。Destination Bindings
:外部消息系统和最终用户提供的应用程序代码(生产者/消费者)之间的桥梁。Message
:生产者和消费者用来与目标绑定器(以及通过外部消息系统的其他应用程序)进行通信的规范数据结构。
2、生产者
2.1 引入依赖
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
<version>2.2.2.RELEASE</version>
<exclusions>
<exclusion>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-acl</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>4.7.1</version>
</dependency>
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-acl</artifactId>
<version>4.7.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
注意,RocketMQ官方维护的Spring-Cloud-Stream依赖中的rocketmq版本为4.4,需要排出后加入4.7.1的依。
2.2 编写配置文件
spring:
application:
name: my-spring-cloud-rocketmq-producer
cloud:
stream:
bindings:
output:
destination: TopicTest
rocketmq:
binder:
name-server: 192.168.159.34:9876
server:
port: 8080
2.3 启动类打上注解
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
@EnableBinding(Source.class)
@SpringBootApplication
public class MySpringCloudRocketmqProducerApplication {
public static void main(String[] args) {
SpringApplication.run(MySpringCloudRocketmqProducerApplication.class, args);
}
}
其中,@EnableBinding(Source.class)
指向配置文件的output参数。
2.4 编写生产者程序
import org.apache.rocketmq.common.message.MessageConst;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@Component
public class MyProducer {
@Resource
private Source source;
public void sendMessage(String msg){
//封装消息头
Map<String,Object> headers=new HashMap<>();
headers.put(MessageConst.PROPERTY_TAGS,"TagA");
MessageHeaders messageHeaders=new MessageHeaders(headers);
//创建消息对象
Message<String> message = MessageBuilder.createMessage(msg, messageHeaders);
//发送消息
source.output().send(message);
}
}
2.5 编写单元测试发送消息
@SpringBootTest
class MySpringCloudRocketmqProducerApplicationTests {
@Autowired
private MyProducer producer;
@Test
void contextLoads() {
producer.sendMessage("hello,spring cloud stream message");
}
}
3、消费者
3.1 引入依赖
与生产者相同。
3.2 编写配置文件
spring:
application:
name: my-spring-cloud-rocketmq-consumer
cloud:
stream:
bindings:
# input消费者
input:
destination: TopicTest
group: spring-cloud-stream-consumer-group
# 配置RocketMQ
rocketmq:
binder:
name-server: 192.168.159.34:9876
server:
port: 8081
3.3 启动类打上注解
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Sink;
@EnableBinding(Sink.class)
@SpringBootApplication
public class MySpringCloudRocketmqConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(MySpringCloudRocketmqConsumerApplication.class, args);
}
}
其中@EnableBinding(Sink.class)
指向配置文件的input参数。
3.4 编写消费者程序
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.cloud.stream.messaging.Sink;
import org.springframework.stereotype.Component;
@Component
public class MyConsumer {
@StreamListener(Sink.INPUT)
public void processMessage(String message){
System.out.println("收到的消息:"+message);
}
}
先启动消费者,使用单元测试发送消息。
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