[大数据]快速在springcloud中使用rabbitmq

1、引入依赖

<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
</dependency>

2、yml文件中增加topic配置

spring:
  cloud:
    stream:
      bindings:
        # 分组方式，每个消息只有一个consumer消费
        groupStreamTopic-consumer:
          destination: groupStreamTopic
          group: Group-A
        groupStreamTopic-producer:
          destination: groupStreamTopic

3、增加topic接口

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

public interface GroupTopic {

    String INPUT = "groupStreamTopic-consumer";

    String OUTPUT = "groupStreamTopic-producer";

    // input指消费者  output是生产者
    @Input(INPUT)
    SubscribableChannel input();

    @Output(OUTPUT)
    MessageChannel output();

}

4、增加消费者类

import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
@EnableBinding(value = {        
        GroupTopic.class
})
public class StreamConsumer {    
    @StreamListener(GroupTopic.INPUT)
    public void consumerGroupMessage(Object payload) {
        log.info("group topic，收到消息：" + payload);
    }
}

5、在生产者中发送消息

 @Autowired
 private GroupTopic groupTopicProducer;
……
……
groupTopicProducer.output().send(MessageBuilder.withPayload(body).build());

6、在rabbitmq控制台查看队列生成情况

http://localhost:15672/#/queues