Kafka学习笔记（十一）：Java Producer

Kafka Java Programming

package io.conduktor.demos.kafka;

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.serialization.StringSerializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Properties;

public class ProducerDemo {

    private static final Logger log = LoggerFactory.getLogger(ProducerDemo.class.getSimpleName());

    public static void main(String[] args) {
        log.info("I am a Kafka Producer");

        // create Producer Properties
        Properties properties = new Properties();
        properties.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "127.0.0.1:9092");
        properties.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        properties.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());

        // create the Producer
        KafkaProducer<String, String> producer = new KafkaProducer<>(properties);

        // create a producer record
        ProducerRecord<String, String> producerRecord =
            new ProducerRecord<>("demo_java", "hello world");

        // send the data - asynchronous
        producer.send(producerRecord);

        // flush data - synchronous
        producer.flush();

        // flush and close producer
        producer.close();

    }
}