springboot集成Kafka

kafka集成到springboot项目中

依赖

    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.kafka
            spring-kafka
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            org.springframework.kafka
            spring-kafka-test
            test
        
    

配置

#============== kafka ===================
# 指定kafka 代理地址，可以多个
spring.kafka.bootstrap-servers=127.0.0.1:9092

#=============== provider  =======================

spring.kafka.producer.retries=0
# 每次批量发送消息的数量
spring.kafka.producer.batch-size=16384
spring.kafka.producer.buffer-memory=33554432

# 指定消息key和消息体的编解码方式
spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.value-serializer=org.apache.kafka.common.serialization.StringSerializer

#=============== consumer  =======================
# 指定默认消费者group id
spring.kafka.consumer.group-id=analyse-consumer-group

spring.kafka.consumer.auto-offset-reset=earliest
spring.kafka.consumer.enable-auto-commit=true
spring.kafka.consumer.auto-commit-interval=100

# 指定消息key和消息体的编解码方式
spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer
spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer

消息提供

@Component
public class MessageSender {

    @Autowired
    private KafkaTemplate kafkaTemplate;

    /**
     * 发送队列信息
     * @param message
     */
    public void send(Message message){
        System.out.println("++++++发送信息");
        // topic：tianhong
        kafkaTemplate.send("uuuu1",message.toString());
    }

}

消费消息

@Component
public class MessageReceiver {

    @KafkaListener(topics = {"LOG"})
    public void listen(ConsumerRecord record){
        Optional kafkaMessage = Optional.ofNullable(record.value());
        if (kafkaMessage.isPresent()) {
            Object message = kafkaMessage.get();
            System.out.println(message);
        }
    }

}