SpringCloud集成kafka集群

[5.1 下载 kafka Apache KafkaApache Kafka: A Distributed Streaming Platform.https://kafka.apache.org/downloads.html](#5.1 下载 kafka Apache KafkaApache Kafka: A Distributed Streaming Platform.https://kafka.apache.org/downloads.html)

[5.2 在config目录下做相关配置](#5.2 在config目录下做相关配置)

1.引入kafka依赖

java 复制代码

 <!-- Spring Boot Kafka Starter -->
        <dependency>
            <groupId>org.springframework.kafka</groupId>
            <artifactId>spring-kafka</artifactId>
        </dependency>

2.在yml文件配置配置kafka连接

java 复制代码

  kafka:
    bootstrap-servers: localhost:9092,localhost:9093,localhost:9095,localhost:9096
    consumer:
      group-id: myGroup
      auto-offset-reset: earliest
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
    producer:
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer

3.注入KafkaTemplate模版

java 复制代码

@Configuration
public class KafkaConfig {
    @Autowired
    private ProducerFactory producerFactory;
    @Bean
    public KafkaTemplate<String, String> kafkaTemplate() {
        return new KafkaTemplate<>(producerFactory);
    }
   /* @Bean
    public ProducerFactory<String, String> producerFactory() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
        configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        // 添加其他配置...
        return new DefaultKafkaProducerFactory<>(configProps);
    }*/
}

4.创建kafka消息监听和消费端

java 复制代码

package com.example.consumer.consumer;

import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

@Component
public class KafkaConsumer {
    @KafkaListener(topics = "yourTopic", groupId = "myGroup")
    public void listen(String message) {
        System.out.println("Received Message in group 'myGroup': " + message);
    }
}

5.搭建kafka集群

5.1 下载 kafkaApache KafkaApache Kafka: A Distributed Streaming Platform.https://kafka.apache.org/downloads.html

5.2 在config目录下做相关配置

zookeeper.properties相关配置

server.properties相关配置，端口默认是9092，如果需要配置特定端口，可以加port=9092

想搞几个集群就复制几个，并且修改zookeeper.propertie和server.properties的端口。

就像我配置的