kafka使用（二）--- springboot整合

pom.xml

	org.springframework.kafka
	spring-kafka
	2.1.5.RELEASE

 application.properties

# kafka相关配置
spring.kafka.bootstrap-servers=192.168.137.100:9092
spring.kafka.producer.retries=0
spring.kafka.producer.acks=1
spring.kafka.producer.batch-size=16384
spring.kafka.producer.properties.linger.ms=0
spring.kafka.producer.buffer-memory = 33554432
spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.value-serializer=com.hurricane.kafka.utils.EncodeingKafka
spring.kafka.consumer.enable-auto-commit=true
spring.kafka.consumer.auto.commit.interval.ms=1000
spring.kafka.consumer.auto-offset-reset=earliest #latest
spring.kafka.consumer.properties.session.timeout.ms=120000
spring.kafka.consumer.properties.request.timeout.ms=180000
spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer
spring.kafka.consumer.value-deserializer=com.hurricane.kafka.utils.DecodeingKafka
spring.kafka.listener.missing-topics-fatal=false

消费者：

package com.hurricane.kafka.consumer;

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

@Component
public class KafkaConsumer {
    @KafkaListener(topics = {"testtopic"},groupId = "defaultConsumerGroup")
    public void onMessage1(ConsumerRecord record){
        System.out.println("简单消费："+record.topic()+"-"+record.partition()+"-"+record.value());
    }
	
}

生产者：

package com.hurricane.kafka.producer;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.SendResult;
import org.springframework.util.concurrent.ListenableFutureCallback;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class KafkaProducer {
	
	@Autowired
    private KafkaTemplate kafkaTemplate;
	
    // 发送消息
    @GetMapping("/kafka/callback/{message}")
    public void sendMessage3(@PathVariable("message") String callbackMessage) {
    	System.out.println(callbackMessage);
    	kafkaTemplate.send("testtopic", callbackMessage).addCallback(new ListenableFutureCallback>() {
            public void onFailure(Throwable ex) {
                System.out.println("发送消息失败："+ex.getMessage());
            }
            public void onSuccess(SendResult result) {
                System.out.println("发送消息成功：" + result.getRecordmetadata().topic() + "-" + result.getRecordmetadata().partition() + "-" + result.getRecordmetadata().offset());
            }
        });
    }
}

为了能够将json类型作为消息成功发送，创建消息编解码类：

编码类：

package com.hurricane.kafka.utils;

import java.util.Map;
import org.apache.kafka.common.serialization.Serializer;
public class EncodeingKafka implements Serializer