Springboot Kafka

1、添加依赖

      <!-- kafka -->

      <dependency>

         <groupId>org.springframework.kafka</groupId>

         <artifactId>spring-kafka</artifactId>

         <version>1.3.0.RELEASE</version>

      </dependency>

注意：Kafka安装的版本为kafka_2.12-0.11.0.1，所以引入的kafka依赖需要1.3以上版本，这样kafka client才是0.11.0.0的

 

2、Kafka配置

#kafka

spring.kafka.bootstrap-servers=192.168.xx.xx:9092

spring.kafka.consumer.group-id=pvs

#key-value序列化反序列化

spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer

spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer

spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer

spring.kafka.producer.value-serializer=org.apache.kafka.common.serialization.StringSerializer

spring.kafka.producer.batch-size=65536

spring.kafka.producer.buffer-memory=524288

 

3、使用例子

 

@Controller

@EnableAutoConfiguration

public class SampleController {

 

    private Logger logger = LoggerFactory.getLogger(SampleController.class);

 

    @Autowired

    private KafkaTemplate<String, String> template;

 

    @RequestMapping("/send")

    @ResponseBody

    String send(String topic, String key, String data) {

        template.send(topic, key, data);

        return "success";

    }

 

    @KafkaListener(id = "t1", topics = {"t1"})

    public void listenT1(ConsumerRecord<?, ?> cr) throws Exception {

        logger.info("{} - {} : {}", cr.topic(), cr.key(), cr.value());

    }

 

    @KafkaListener(id = "t2", topics = {"t2"})

    public void listenT2(ConsumerRecord<?, ?> cr) throws Exception {

        logger.info("{} - {} : {}", cr.topic(), cr.key(), cr.value());

    }

 

浏览器调用：http://localhost:8080/send?topic=t2&key=test1&data=hello122

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