所有代码都在github上：https://github.com/demonruin/cloud2020/tree/master

本文演示是的SpringCloud Stream的消息生产者，和RabbitMQ进行配合，基本上与生产者一样

1、构建生产者项目cloud-stream-rabbitmq-consumer8802，添加pom文件依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        </dependency>
        <!--基础配置-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

2、构建application.yml文件，与生产者不同的地方就是需要将bindings的output在消费端修改成input

server:
  port: 8802

spring:
  application:
    name: cloud-stream-rabbitmq-consumer
  cloud:
    stream:
      binders: # 在此处配置要绑定的rabbitmq的服务信息；
        defaultRabbit: # 表示定义的名称，用于于binding整合
          type: rabbit # 消息组件类型
          environment: # 设置rabbitmq的相关的环境配置
            spring:
              rabbitmq:
                host: localhost
                port: 5672
                username: admin
                password: admin
                virtual_host: my_vhost
      bindings: # 服务的整合处理
        input: # 这个名字是一个通道的名称
          destination: studyExchange # 表示要使用的Exchange名称定义
          content-type: application/json # 设置消息类型，本次为json，文本则设置“text/plain”
          binder: defaultRabbit # 设置要绑定的消息服务的具体设置

eureka:
  client: # 客户端进行Eureka注册的配置
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 2 # 设置心跳的时间间隔（默认是30秒）
    lease-expiration-duration-in-seconds: 5 # 如果现在超过了5秒的间隔（默认是90秒）
    instance-id: receive-8802.com  # 在信息列表时显示主机名称
    prefer-ip-address: true     # 访问的路径变为IP地址

3、构建主启动类

/**
 * created by king on 2020/4/28 3:50 下午
 */
@SpringBootApplication
public class StreamConsumerMain8002 {
    public static void main(String[] args) {
            SpringApplication.run(StreamConsumerMain8002.class,args);
        }
}

4、构建一个controller，来接收rabbitmq的产生的消息,需要用到注解@Component、@EnableBinding(Sink.class)、@StreamListener(Sink.INPUT)

package com.king.springcloud.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.cloud.stream.messaging.Sink;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Component;

/**
 * created by king on 2020/4/28 3:53 下午
 */
@Component
@EnableBinding(Sink.class)
public class StreamConsumerReceiveMessageListnerController {
    @Value("${server.port}")
    private String serverPort;
    
    @StreamListener(Sink.INPUT)
    public void input(Message<String>message){
        System.out.println("我是消费者1号，接收到的消息为："+message.getPayload()+"\t 端口号为："+serverPort);
    }
}

5、启动RabbitMQ、eureka7001、provider8801、consumer8802，然后访问8801，产生消息，而8802的控制台也会收到消息

到此，消息驱动的消费者也搭建完毕了，接下来下面这篇文章会从消息重复、分组消费和消息持久化方面来做几个测试~有兴趣的就移步下一篇