spring boot 集成kafka ，并且实现 发送信息，进行消费信息（亲测有效）

要在Spring Boot中集成Kafka并实现发送和消费信息，你需要以下步骤：

1. 添加依赖到你的pom.xml：

<dependencies>
    <dependency>
        <groupId>org.springframework.kafka</groupId>
        <artifactId>spring-kafka</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

2. 在application.properties或application.yml中配置Kafka：

# Kafka producer settings
spring.kafka.producer.bootstrap-servers=localhost:9092
spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.value-serializer=org.apache.kafka.common.serialization.StringSerializer
 
# Kafka consumer settings
spring.kafka.consumer.bootstrap-servers=localhost:9092
spring.kafka.consumer.group-id=my-group
spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer
spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer

3. 创建Kafka生产者：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
 
@Service
public class KafkaProducer {
 
    @Autowired
    private KafkaTemplate<String, String> kafkaTemplate;
 
    public void sendMessage(String topic, String message) {
        kafkaTemplate.send(topic, message);
    }
}

4. 创建Kafka消费者：

import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;
 
@Component
public class KafkaConsumer {
 
    @KafkaListener(topics = "yourTopic", groupId = "my-group")
    public void listen(String message) {
        System.out.println("Received message in group my-group: " + message);
    }
}

5. 在你的Spring Boot应用中使用Kafka：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class KafkaApplication implements CommandLineRunner {
 
    @Autowired
    private KafkaProducer kafkaProducer;
 
    public static void main(String[] args) {
        SpringApplication.run(KafkaApplication.class, args);
    }
 
    @Override
    public void run(Strin