SpringBoot整合kafka

 Maven依赖

		org.springframework.boot
		spring-boot-starter-parent
		2.0.1.RELEASE
	
	
		
		
			org.springframework.kafka
			spring-kafka
		
		
		
			org.springframework.boot
			spring-boot-starter-web
		
	

application.yml配置文件 

# kafka
spring:
  kafka:
    # kafka服务器地址(可以多个)
    bootstrap-servers: 192.168.128.139:9092,192.168.128.140:9092,192.168.128.141:9092
    consumer:
      # 指定一个默认的组名
      group-id: kafka2
      # earliest:当各分区下有已提交的offset时，从提交的offset开始消费；无提交的offset时，从头开始消费
      # latest:当各分区下有已提交的offset时，从提交的offset开始消费；无提交的offset时，消费新产生的该分区下的数据
      # none:topic各分区都存在已提交的offset时，从offset后开始消费；只要有一个分区不存在已提交的offset，则抛出异常
      auto-offset-reset: earliest
      # key/value的反序列化
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
    producer:
      # key/value的序列化
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
      # 批量抓取
      batch-size: 65536
      # 缓存容量
      buffer-memory: 524288
      # 服务器地址
      bootstrap-servers: 192.168.128.139:9092,192.168.128.140:9092,192.168.128.141:9092

测试代码如下：

 

import org.apache.kafka.clients.consumer.ConsumerRecord;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class KafkaController {

	/**
	 * 注入kafkaTemplate
	 */
	@Autowired
	private KafkaTemplate kafkaTemplate;

	/**
	 * 发送消息的方法
	 *
	 * @param key
	 *            推送数据的key
	 * @param data
	 *            推送数据的data
	 */
	private void send(String key, String data) {
		// topic 名称 key data 消息数据
		kafkaTemplate.send("test-all", key, data);

	}


	@RequestMapping("/kafka")
	public String testKafka() {
		for (int i = 6; i <= 10; i++) {
			send("key" + i, "data" + i);
		}
		return "success";
	}

	public static void main(String[] args) {
		SpringApplication.run(KafkaController.class, args);
	}

	/**
	 * 消费者使用日志打印消息
	 */

	@KafkaListener(topics = "test-all")
	public void receive(ConsumerRecord consumer) {
		System.out.println("topic名称:" + consumer.topic() + ",key:" + consumer.key() + ",分区位置:" + consumer.partition()
				+ ", 下标" + consumer.offset());
	}

}

消费者收到的消息：