在WSL上运行Kafka，在windows上制作producer

import org.apache.kafka.clients.producer.*;

import java.util.Properties;

public class KafkaProducerExample {
    public static void main(String[] args) {
        // Kafka配置
        Properties props = new Properties();
        props.put("bootstrap.servers", "localhost:9092");
        props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
        props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

        // 创建生产者
        Producer<String, String> producer = new KafkaProducer<>(props);

        // 发送消息
        String topic = "test_topic";
        String message = "Hello, Kafka!";
        producer.send(new ProducerRecord<>(topic, message), new Callback() {
            @Override
            public void onCompletion(RecordMetadata metadata, Exception exception) {
                if (exception != null) {
                    System.err.println("Failed to send message: " + exception.getMessage());
                } else {
                    System.out.println("Message sent successfully! Topic: " + metadata.topic() +
                            ", Partition: " + metadata.partition() +
                            ", Offset: " + metadata.offset());
                }
            }
        });

        // 关闭生产者
        producer.close();
    }
}