同步Kafka生产者有例外吗？

import org.apache.kafka.clients.producer.*;
import java.util.Properties;

public class SyncKafkaProducer {
    public static void main(String[] args) {
        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");
        props.put("acks", "all"); // 设置为all以确保消息被所有ISR确认
        props.put("retries", 3); // 设置重试次数为3

        Producer<String, String> producer = new KafkaProducer<>(props);

        ProducerRecord<String, String> record = new ProducerRecord<>("my-topic", "key", "value");
        try {
            RecordMetadata metadata = producer.send(record).get(); // 同步发送消息并等待确认
            System.out.println("Message sent to topic: " + metadata.topic() + " partition: " + metadata.partition() + " offset: " + metadata.offset());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            producer.close();
        }
    }
}