SpringCloud H系列 alibaba 2.1.1 (一) Stream-RocketMQ 消息生产消费

1.安装RocketMQ

请参考 : docker 安装 rocketmq(namesrv broker 与可视化控制台 console)

2.项目父工程

请参考 : SpringCloud H系列 alibaba 2.1.1 (一) nacos1.X 注册中心 服务端

3.项目结构 

4.创建消息生产端 alibaba-stream-rocketmq-produce

pom.xml

    <parent>
        <groupId>com.alibaba</groupId>
        <artifactId>spring-cloud-hoxton</artifactId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>alibaba-stream-rocketmq-produce</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

application.yml  配置文件

  application:
    name: alibaba-stream-rocketmq-produce
  cloud:
    stream:
      rocketmq:
        binder:
          # rocketmq 地址
          name-server: 192.168.101.11:9876
      bindings:
        output:
          content-type: application/json
          # 用来指定topic
          destination: stream-test-topic

 StreamRocketMQProduceApplication.java  启动类  增加 @EnableBinding(Source.class) 注解

/**
 * @author Lion Li
 */
@SpringBootApplication
@EnableBinding(Source.class)
public class StreamRocketMQProduceApplication {

	public static void main(String[] args) {
		SpringApplication.run(StreamRocketMQProduceApplication.class, args);
	}

}

创建消息体  TestMessaging.java 这里使用了lombok

/**
 * @author Lion Li
 */
@Data
@Accessors(chain = true)
public class TestMessaging {
    /**
     * 消息id
     */
    private String msgId;
    /**
     * 消息内容
     */
    private String msgText;
}

创建消息投递方法 TestController.java

/**
 * @author Lion Li
 */
@RestController
public class TestController {

    @Autowired
    private Source source;

    @GetMapping("/stream-test-msg")
    public String streamTestMsg(String msg){
        // 构建消息对象
        TestMessaging testMessaging = new TestMessaging()
                .setMsgId(UUID.randomUUID().toString())
                .setMsgText(msg);
        source.output().send(
                MessageBuilder.withPayload(testMessaging).build());
        return "投递消息 => " + msg + " => 成功";
    }
}

启动消息生产端  访问 http://localhost:8000/stream-test-msg?msg=Lion Li

查看rocketmq控制台

查看消息内容

投递成功

5.创建消息生产端 alibaba-stream-rocketmq-consumer

pom.xml

    <parent>
        <groupId>com.alibaba</groupId>
        <artifactId>spring-cloud-hoxton</artifactId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>alibaba-stream-rocketmq-consumer</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

application.yml 配置文件

server:
  port: 8002
spring:
  application:
    name: alibaba-stream-rocketmq-consumer
  cloud:
    stream:
      rocketmq:
        binder:
          # rocketmq 地址
          name-server: 192.168.101.11:9876
      bindings:
        input:
          content-type: application/json
          # 定义 topic
          destination: stream-test-topic
          # group一定要写
          group: test-group

StreamRocketMQConsumerApplication.java  启动类  增加 @EnableBinding(Sink.class) 注解

/**
 * @author Lion Li
 */
@SpringBootApplication
@EnableBinding(Sink.class)
public class StreamRocketMQConsumerApplication {

	public static void main(String[] args) {
		SpringApplication.run(StreamRocketMQConsumerApplication.class, args);
	}

}

消息体  TestMessaging.java

/**
 * @author Lion Li
 */
@Data
@Accessors(chain = true)
public class TestMessaging {
    /**
     * 消息id
     */
    private String msgId;
    /**
     * 消息内容
     */
    private String msgText;
}

创建消息监听  TestStreamConsumer.java  包含全局异常处理

@Slf4j
@Service
public class TestStreamConsumer {

    @StreamListener(Sink.INPUT)
    public void receive(TestMessaging testMessaging){
        log.warn("通过stream消费到消息 => {}",testMessaging.toString());
//        if (testMessaging.getMsgText().equals("测试异常")){
//            throw new RuntimeException("测试全局异常拦截");
//        }
    }

    /**
     * 全局异常处理
     */
    @StreamListener("errorChannel")
    public void error(Message<?> message){
        ErrorMessage errorMessage = (ErrorMessage) message;
        log.error("发生异常 => {}",errorMessage);
    }

}

启动消息消费端  查看是否可以消费到消息

消费成功

项目已上传到gitee

地址: spring-cloud-alibaba-H-demo

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