spring cloud stream配置rabbitmq

在Spring Cloud Stream中配置RabbitMQ，需要以下步骤：

1. 引入Spring Cloud Stream和RabbitMQ的依赖：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-stream</artifactId>
    <version>3.1.0</version>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
    <version>3.1.0</version>
</dependency>

2. 配置RabbitMQ连接信息：

spring:
  rabbitmq:
    host: localhost
    port: 5672
    username: guest
    password: guest
    virtual-host: /

3. 配置消息通道的绑定：

@EnableBinding(MyProcessor.class)
public class StreamConfig {

    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }
}

public interface MyProcessor {

    String INPUT = "my-input";
    String OUTPUT = "my-output";

    @Input(INPUT)
    SubscribableChannel input();

    @Output(OUTPUT)
    MessageChannel output();
}

4. 在应用程序中使用消息通道：

@Autowired
private MyProcessor myProcessor;

public void send(String message) {
    myProcessor.output().send(MessageBuilder.withPayload(message).build());
}

@StreamListener(MyProcessor.INPUT)
public void receive(String message) {
    System.out.println("Received message: " + message);
}

通过以上配置，就可以在Spring Cloud Stream应用程序中使用RabbitMQ进行消息传递了。