spring bootはkafkaの記録を統合します.


pomファイル

        
            org.springframework.boot
            spring-boot-starter-web
        
 
            org.springframework.kafka
            spring-kafka
        
設定
spring:
  kafka:
#    bootstrap-servers: 192.168.10.45:9092
    bootstrap-servers: 192.168.198.128:9092
    producer:
      #     ,  Integer.MAX_VALUE
      retries: 1
      #         (  16K)
      batch-size: 16384
      #           (32M)
      buffer-memory: 33554432
      # key value    (  ,     )
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
      # ack    ,  1,      leader    
      acks: 1
        # springboot1.5.16        properties      ,     。2.x    
        #properties:
      #            
      #{partitioner.class: com.msy.kafka.MyPartition, acks: all}
    consumer:
      group-id: test
      enable-auto-commit: false
      # earliest:         latest:             latest
      auto-offset-reset: latest
      # key value    (  ,     )
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
 #     
      max-poll-records: 100  
    listener:
      #                      ,         ,                       8 Topic。
      concurrency: 6
      #          ,    ackMode
      ack-mode: MANUAL
    topic: test5
生産者はデータの生成を呼び出す必要があります.
package com.example.sms.middleware.sms_middleware.kafka;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

/**
 * @Author kang
 * @Date 2020/6/19$ 10:03$
 **/
@Component
public class Producer {

    @Autowired
    private KafkaTemplate kafkaTemplate;

    @Value("${spring.kafka.topic}")
    private String topic;

    public void sendMessage(){
        kafkaTemplate.send(topic,"message");
    }

//    @Override
//    public void run(ApplicationArguments args) throws Exception {
//        System.out.println("11111");
////        new Producer().sendMessage();
//    }
}
消費者 
package com.example.sms.middleware.sms_middleware.kafka;

import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.stereotype.Component;

/**
 * @Author kang
 * @Date 2020/6/19$ 10:04$
 **/
@Component
@Slf4j
public class Consumer {

    @KafkaListener(topics = "test5")  //       topic   
    public void consumerMessage(ConsumerRecord consumerRecord, Acknowledgment ack) {
        try {
            System.out.println("1212121");
            String value = consumerRecord.value();
            System.out.println("1212121"+value);
            log.info("       :{}", value);
            //     ......
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            ack.acknowledge();
        }
    }
}

直接にappication.propertiesにspring.kafka.listener.co ncurrency=3を追加して、@Kafkalistenerを使って同時に消費することができます.
一つのパーティションだけのtopicに対しては、パーティションの消費は不要です.意味がないからです.以下の例は2つのパーティションがある場合(私の中には4つのlistenParttionX方法があります.私のtopicには4つのパーティションが設けられています.)
 @KafkaListener(id = "id0", topicPartitions = { @TopicPartition(topic = TPOIC, partitions = { "0" }) })
    public void listenPartition0(List> records) {
        log.info("Id0 Listener, Thread ID: " + Thread.currentThread().getId());
        log.info("Id0 records size " +  records.size());

        for (ConsumerRecord, ?> record : records) {
           String value = record.value();

            }
        }
    }

    @KafkaListener(id = "id1", topicPartitions = { @TopicPartition(topic = TPOIC, partitions = { "1" }) })
    public void listenPartition1(List> records) {
        log.info("Id1 Listener, Thread ID: " + Thread.currentThread().getId());
        log.info("Id1 records size " +  records.size());

        for (ConsumerRecord, ?> record : records) {
             String value = record.value();
            }
        }
エラーインターフェースは時報にアクセスできません.
解決:
@SpringBootApplication         Application           ,