<dependency>

      <groupId>org.apache.kafka</groupId>

      <artifactId>kafka-clients</artifactId>

      <version>0.11.0.1</version>

    </dependency>

package org.study.kafka;

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

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

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

import java.util.HashMap;

import java.util.Map;

/**

 * 生产者

 */

public class ProducerSample {

    public static void main(String[] args) {

        Map<String, Object> props = new HashMap<>();

        //zookeeper的地址

        props.put("zk.connect", "127.0.0.1:2181");

        //用于建立与 kafka 集群连接的 host/port 组

        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("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

        props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

        String topic = "test-topic";

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

        producer.send(new ProducerRecord<String, String>(topic,"idea-key2","java-message 1"));

        producer.send(new ProducerRecord<String, String>(topic,"idea-key2","java-message 2"));

        producer.send(new ProducerRecord<String, String>(topic,"idea-key2","java-message 3"));

        producer.close();

    }

}

package org.study.kafka;

import org.apache.kafka.clients.consumer.Consumer;

import org.apache.kafka.clients.consumer.ConsumerRecord;

import org.apache.kafka.clients.consumer.ConsumerRecords;

import org.apache.kafka.clients.consumer.KafkaConsumer;

import java.util.Arrays;

import java.util.Properties;

/**

 * 消费者

 */

public class ConsumerSample {

    public static void main(String[] args) {

        String topic = "test-topic";// topic name

        Properties props = new Properties();

        props.put("bootstrap.servers", "localhost:9092");//用于建立与 kafka 集群连接的 host/port 组。

        props.put("group.id", "testGroup1");// Consumer Group Name

        props.put("enable.auto.commit", "true");// Consumer 的 offset 是否自动提交

        props.put("auto.commit.interval.ms", "1000");// 自动提交 offset 到 zookeeper 的时间间隔，时间是毫秒

        props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

        props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

        Consumer<String, String> consumer = new KafkaConsumer(props);

        consumer.subscribe(Arrays.asList(topic));

        while (true) {

            ConsumerRecords<String, String> records = consumer.poll(100);

            for (ConsumerRecord<String, String> record : records)

                System.out.printf("partition = %d, offset = %d, key = %s, value = %s%n", record.partition(), record.offset(), record.key(), record.value());

        }

    }

}