【Java Web】Spring整合Kafka

• 引入依赖
  • spring-kafka
• 配置Kafka
  • 配置server/consumer
• 访问Kafka
  • 生产者
    • kafkaTemplate.send(topic,data)
  • 消费者
    • @KafkaListenner(topics={“test”})
    • public void handleMessage(ConsumerRecord record) { }

application.properties配置：

# kafka
spring.kafka.bootstrap-servers=localhost:9092
spring.kafka.consumer.group-id=community-consumer-group
spring.kafka.consumer.enable-auto-commit=true
spring.kafka.consumer.auto-commit-interval=3000
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测试代码：

package com.nowcoder.community;

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration(classes = CommunityApplication.class)
public class KafkaTests {

    @Autowired
    private KafkaProducer kafkaProducer;
    @Test
    public void testKafka(){
        kafkaProducer.sendMessage("test","你好");
        kafkaProducer.sendMessage("test","兄弟");

        try {
            Thread.sleep(1000*10);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }
}

@Component
class KafkaProducer{

    @Autowired
    private KafkaTemplate kafkaTemplate;

    public void sendMessage(String topic, String content){
        kafkaTemplate.send(topic, content);
    }
}

@Component
class KafkaConsumer{

    @KafkaListener(topics = {"test"})
    public void handleMessage(ConsumerRecord record){
        System.out.println(record.value());
    }
}
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