Maven添加依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
    <version>${spring-cloud-starter-stream-rocketmq.version}</version>
</dependency>

yml配置

消费者和生产者的使用方式为：名称-out-数字的方式用于生产者，名称-in-数字的方式用于消费者。

spring:
	cloud:
	    function:
	      definition: receive1;receive2;receive3  #重点配置 与 binding 名与消费者对应，多个可以使用；
	    stream:
	      rocketmq:
	        binder:
	          name-server: 127.0.0.1:9876  #rocketmq 地址
	          vipChannelEnabled: false
	        bindings:
	          receive1-in-0:
	            consumer:
	              tags: s1||s2  #消费tag
	              broadcasting: false #是否使用广播消费，默认为 false 使用集群消费
	          receive1-out-0:
	            producer:
	              sync: true  #开启同步发送
	          receive2-in-0:
	            consumer:
	              tags:   #消费tag
	              broadcasting: true # 是否使用广播消费，默认为 false 使用集群消费
	          receive2-out-0:
	            producer:
	              sync: false #默认异步
	          receive3-in-0:
	            consumer:
	              tags:   #消费tag
	              broadcasting: false # 是否使用广播消费，默认为 false 使用集群消费
	          receive3-out-0:
	            producer:
	              sync: true
	
	      bindings:
	        #消费者
	        receive1-in-0:
	          destination: receive1-topic 	#topic
	          content-type: application/json
	          group: receive1-in-group 	#group
	        #生产者
	        receive1-out-0:
	          destination: receive1-topic #topic
	          group: receive1-out-group
	        receive2-in-0:
	          destination: receive2-topic #topic
	          content-type: application/json
	          group: receive2-in-group #group
	        receive2-out-0:
	          destination: receive2-topic #topic
	          group: receive2-out-group
	        receive3-in-0:
	          destination: receive3-topic #topic
	          content-type: application/json
	          group: receive3-in-group #group
	        receive3-out-0:
	          destination: receive3-topic #topic
	          group: receive3-out-group #group

生产者发生消息

@RestController
@RequestMapping("/stream")
@RequiredArgsConstructor
@Slf4j
public class StreamController {

    private final StreamBridge streamBridge;

    @GetMapping("/test1")
    public void test1() {
    	//消息广播消费
        boolean result = streamBridge.send("receive2-out-0", "普通消息发送接收");
        log.info("普通消息发送接收结果:{}", result);
    }

    @GetMapping("/test2")
    public void test2() throws Exception {
        //tag 发送
        String payload = "消息发送到指定tag";
        Map<String, Object> headers = new HashMap<>();
        headers.put(MessageConst.PROPERTY_TAGS, "s1");
        MessageHeaders messageHeaders = new MessageHeaders(headers);
        Message<String> message = MessageBuilder.withPayload(payload).copyHeadersIfAbsent(messageHeaders).build();
        boolean result = streamBridge.send("receive1-out-0", message);
        log.info("消息发送到指定tag:{}", result);
    }

    @GetMapping("/test3")
    public void test3() throws Exception {
        String payload = "延迟消息 10s";
        Map<String, Object> headers = new HashMap<>();
        //延迟消费 延迟10秒
        headers.put(MessageConst.PROPERTY_DELAY_TIME_LEVEL, "3");
        MessageHeaders messageHeaders = new MessageHeaders(headers);
        Message<String> message = MessageBuilder.withPayload(payload).copyHeadersIfAbsent(messageHeaders).build();
        boolean s3 = streamBridge.send("receive3-out-0", message);
        log.info("延迟消息 10s:{}", s3);
    }
}

延迟消息级别

String messageDelayLevel = "1s 5s 10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h"

消费者消费

@Slf4j
@Service
public class StreamConsumer {

    @Bean
    public Consumer<Message<String>> receive1() {
        return message -> {
            log.info("receive1获取消息tag:{}", message.getHeaders().get(RocketMQHeaders.PREFIX + RocketMQHeaders.TAGS));
            log.info("receive1接收数据:{}", message.getPayload());
        };
    }


    @Bean
    public Function<Flux<Message<String>>, Mono<Void>> receive2() {
        return flux -> flux.map(message -> {
            log.info("receive2接收数据:{}", message.getPayload());
            return message;
        }).then();
    }

    @Bean
    public Consumer<Flux<Message<String>>> receive3() {
        return flux -> flux.map(message -> {
            log.info("receive3接收数据:{}", message.getPayload());
            return message;
        }).subscribe();
    }
}