Spring Cloud 集成 kafka

矫情吗；* 2022-06-15 12:42 489阅读 0赞

kafka的安装部署请参考：[kafka安装部署][kafka]

**1、在pom.xml里面添加kafka的maven依赖**

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

**2、在properties 配置文件里面添加 kafka binder 参数**

spring.cloud.stream.kafka.binder.brokers=127.0.0.1:9092
    spring.cloud.stream.kafka.binder.zk-nodes=127.0.0.1:2181
    spring.cloud.stream.kafka.binder.minPartitionCount=1
    spring.cloud.stream.kafka.binder.autoCreateTopics=true
    spring.cloud.stream.kafka.binder.autoAddPartitions=true

**3、输入通道定义，供消费者使用**

（1）在properties配置文件里面添加输入通道配置信息

spring.cloud.stream.bindings.testa.destination=test_spring_stream
    spring.cloud.stream.bindings.testa.group=group-1
    spring.cloud.stream.bindings.testa.consumer.concurrency=1
    spring.cloud.stream.bindings.testa.consumer.partitioned=false

（2）定义输入通道并绑定输入通道配置信息

public interface Sink {
    	
    	//接收队列1
    	String INPUT_1 = "testa";
    
    	@Input(Sink.INPUT_1)
    	SubscribableChannel input1();
    
    }

INPUT\_1 = "testa" 跟配置文件里面的通道名称 testa 保持一致

**4、输出通道定义，供生产者使用**

（1）在properties配置文件里面添加输出通道配置信息

spring.cloud.stream.bindings.sourceA.destination=test_spring_stream
    spring.cloud.stream.bindings.sourceA.producer.partitionCount=1

（2）定义输出通道并绑定输出通道配置信息

public interface Source {
    	
    	//发送队列1
    	String OUTPUT_1 = "sourceA";
    	
    	@Output(Source.OUTPUT_1)
    	MessageChannel output1();
    	
    }

OUTPUT\_1 = "sourceA" 跟配置文件里面的通道名称 sourceA 保持一致

**5、生产者端代码**

@EnableBinding(Source.class)
    public class KafkaSender {
    	
        private final Logger logger = LoggerFactory.getLogger(KafkaSender.class);
    	
        @Autowired
        private Source source;
    	
        public void sendMessage(String message) {
    	try {
    	    source.output1().send(MessageBuilder.withPayload("message: " + message).build());
    	} catch (Exception e) {
    	    logger.info("消息发送失败，原因："+e);
    	    e.printStackTrace();
    	}
        }
    }

调用sendMessage方法发送消息

**6、消费者端代码**

@EnableBinding(Sink.class)
    public class KafkaReceiver {
    
    	private final Logger logger = LoggerFactory.getLogger(KafkaReceiver.class);
    
    	@StreamListener(Sink.INPUT_1)
    	private void receive(String vote) {
    		logger.info("receive message : " + vote);
    	}
    	
    }

通过receive方法接收消息

[kafka]: http://blog.csdn.net/ldy1016/article/details/76085093