微服务 – Spring Cloud – Rabbion

问题描述不是很清晰，但我猜你可能想要知道如何在Spring Cloud中集成RabbitMQ。以下是一个简单的例子，展示了如何在Spring Cloud项目中配置和使用RabbitMQ。

1. 添加依赖到你的pom.xml：

<dependencies>
    <!-- Spring Cloud Stream + RabbitMQ Binder -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
    </dependency>
</dependencies>
 
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Finchley.SR2</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

2. 在application.properties或application.yml中配置RabbitMQ：

spring:
  rabbitmq:
    host: localhost
    port: 5672
    username: guest
    password: guest

3. 创建一个接收消息的服务：

import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.cloud.stream.messaging.Sink;
import org.springframework.stereotype.Component;
 
@Component
@EnableBinding(Sink.class)
public class Receiver {
 
    @StreamListener(Sink.INPUT)
    public void receive(String message) {
        System.out.println("Received: " + message);
    }
}

4. 创建一个发送消息的服务：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.MessageChannel;
import org.springframework.stereotype.Component;
 
@Component
@EnableBinding({Source.class})
public class Sender {
 
    @Autowired
    private MessageChannel output;
 
    public void send(String message) {
        output.send(MessageBuilder.withPayload(message).build());
    }
}

以上代码展示了如何在Spring Cloud项目中使用Spring Cloud Stream和RabbitMQ。Receiver服务监听消息队列，而Sender服务则向消息队列发送消息。

请根据你的具体需求调整配置和代码。