start mqnamesrv.cmd
start mqbroker.cmd -n 127.0.0.1:9876 autoCreateTopicEnable=true

<dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-stream-binder-rocketmq</artifactId>
    </dependency>

public interface InputOutput {
  String MAIL_OUTPUT = "mailOutput";
  String MAIL_INPUT = "mailInput";
  String OUTPUT = "output";
  String INPUT = "input";
  @Output(OUTPUT)
  MessageChannel output();
  @Input(INPUT)
  SubscribableChannel input();
  @Output(MAIL_OUTPUT)
  MessageChannel mailOutput();
  @Input(MAIL_INPUT)
  SubscribableChannel mailInput();
}

spring:
  cloud:
    stream:
     rocketmq:
      binder:
       name-server: 127.0.0.1:9876
     bindings:
      output:
       destination: bpmmessage
       group: bpmmessage-group
  
      input:
       destination: bpmmessage
       group: bpmmessage-group-consumer
  
      mailOutput:
       destination: mail
       group: mail-group
  
      mailInput:
        destination: mail
        group: mail-group-consumer

MessageModel messageModel=new MessageModel();

    messageModel.setMsgType("mail");
    messageModel.setContent("helloworld");

    inputOutput.mailOutput().send( MessageBuilder.withPayload(
        "mail"
    ).build());

    inputOutput.output().send(
        MessageBuilder.withPayload(
            messageModel
        ).build()
    );

@Service
public class MessageListener {

  @StreamListener(InputOutput.INPUT)
  public void receive(MessageModel message) {
    System.err.println(message);
    System.err.println("ok");
  }


  @StreamListener(InputOutput.MAIL_INPUT)
  public void receive(String message) {
    System.err.println(message);
    System.err.println("ok");
  }
}