1:maven依赖
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR6</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-stream-binder-kafka</artifactId>
</dependency>
2:provider (.yml文件)
server: port: 8081 spring: application: name: lilili-provider cloud: instance-count: 1 instance-index: 0 stream: kafka: binder: brokers: localhost:9092 zk-nodes: localhost:2182 auto-add-partitions: true auto-create-topics: true min-partition-count: 1 bindings: output: destination: mytopic content-type: text/plain producer: partitionCount: 1
@EnableBinding(Source.class) public class SendService { @Autowired private Source source; public void sendMessage(String msg) { try { source.output().send(MessageBuilder.withPayload(msg).build()); } catch (Exception e) { e.printStackTrace(); } } } @RestController public class ProducerController { @Autowired private SendService service; @RequestMapping(value = "/send/{msg}", method = RequestMethod.GET) public void send(@PathVariable("msg") String msg){ service.sendMessage(msg); } }
3:consumer (.yml文件)
spring:
application:
name: input-demo
cloud:
instance-count: 1
instance-index: 0
stream:
kafka:
binder:
brokers: localhost:9092
zk-nodes: localhost:2182
auto-add-partitions: true
auto-create-topics: true
min-partition-count: 1
bindings:
input:
destination: event-demo
group: s1
consumer:
autoCommitOffset: false
concurrency: 1
partitioned: false
import org.springframework.cloud.stream.annotation.EnableBinding; import org.springframework.cloud.stream.annotation.StreamListener; import org.springframework.cloud.stream.messaging.Sink; /** * lilili 2018/4/14. */ @EnableBinding(Sink.class) public class KafkaConsumer { @StreamListener(Sink.INPUT) public void onReceive(byte[] msg) { System.out.println("get Kafka message:" + new String(msg)); } }
或者:
@EnableBinding(Sink.class) public class MsgSink { @StreamListener(Sink.INPUT) public void process(Message<?> message) { System.out.println(message.getPayload()); Acknowledgment acknowledgment = message.getHeaders().get(KafkaHeaders.ACKNOWLEDGMENT, Acknowledgment.class); if (acknowledgment != null) { System.out.println("Acknowledgment provided"); acknowledgment.acknowledge(); } } }