Spring Cloud Stream简单用法

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
            <version>2.1.0.RELEASE</version>
        </dependency>

    </dependencies>

spring:
  application:
    name: zhao-cloud-stream-producer
  cloud:
    stream:
      rocketmq:
        binder:
          name-server: 127.0.0.1:9876
        bindings:
          output:
            producer:
              group: test
              sync: true
      bindings:
        output:
          destination: stream-test-topic
          content-type: text/plain # 内容格式。这里使用 JSON

import org.springframework.cloud.stream.annotation.Output;
import org.springframework.messaging.MessageChannel;

public interface TestChannel {
    @Output("output")
    MessageChannel output();
}

@Controller
public class SendMessageController {
    @Resource
    private TestChannel testChannel;

    @ResponseBody
    @RequestMapping(value = "send", method = RequestMethod.GET)
    public String sendMessage() {
        String messageId = UUID.randomUUID().toString();
        Message<String> message = MessageBuilder
                .withPayload("this is a test:" + messageId)
                .setHeader(MessageConst.PROPERTY_TAGS, "test")
                .build();
        try {
            testChannel.output().send(message);
            return messageId + "发送成功";
        } catch (Exception e) {
            return messageId + "发送失败，原因：" + e.getMessage();
        }
    }
}

spring:
  application:
    name: zhao-cloud-stream-consumer
  cloud:
    stream:
      rocketmq:
        binder:
          name-server: 127.0.0.1:9876
        bindings:
          input:
            consumer:
              tags: test
      bindings:
        input:
          destination: stream-test-topic
          content-type: text/plain # 内容格式。这里使用 jsON
          group: test

import org.springframework.cloud.stream.annotation.Input;
import org.springframework.messaging.SubscribableChannel;

public interface TestChannel {
    @Input("input")
    SubscribableChannel input();
}

   @StreamListener("input")
    public void receiveInput(@Payload Message message) throws ValidationException {
        System.out.println("input1 receive: " + message.getPayload() + ", foo header: " + message.getHeaders().get("foo"));
    }

spring:
  application:
    name: zhao-cloud-stream-producer
  cloud:
    stream:
      rocketmq:
        binder:
          name-server: 127.0.0.1:9876
        bindings:
          output:
            producer:
              group: test
              sync: true
      bindings:
        output:
          destination: stream-test-topic
          content-type: text/plain # 内容格式。这里使用 JSON
          producer:
            errorChannelEnabled: true

 @Bean("stream-test-topic.errors")
    MessageChannel testoutPutErrorChannel(){
        return new PublishSubscribeChannel();
    }

import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Service;

@Service
public class ErrorProducerService {

    @ServiceActivator(inputChannel = "stream-test-topic.errors")
    public void receiveProducerError(Message message){
        System.out.println("receive error msg :"+message);
    }
}

spring:
  application:
    name: zhao-cloud-stream-producer
  cloud:
    stream:
      rocketmq:
        binder:
          name-server: 127.0.0.1:9876
        bindings:
          output:
            producer:
              group: test
              sync: true
      bindings:
        output:
          destination: stream-test-topic
          content-type: text/plain # 内容格式。这里使用 JSON
          producer:
            errorChannelEnabled: true

 @StreamListener("input")
    public void receiveInput(@Payload Message message) throws ValidationException {
        //System.out.println("input1 receive: " + message.getPayload() + ", foo header: " + message.getHeaders().get("foo"));
        throw new RuntimeException("oops");
    }
    @ServiceActivator(inputChannel = "stream-test-topic.test.errors")
    public void receiveConsumeError(Message message){
        System.out.println("receive error msg"+message.getPayload());
    }