1.producer程序

package com.test.frame.kafka.controller;

import kafka.javaapi.producer.Producer;

import kafka.producer.KeyedMessage;

import kafka.producer.ProducerConfig;

import java.util.Properties;

public class KafkaProducer {

private final Producer producer;

public final static String TOPIC = "my-multi-topic";

//构造方法

private KafkaProducer() {

Properties props = new Properties();

props.put("metadata.broker.list", "localhost:9092");

props.put("serializer.class", "kafka.serializer.StringEncoder");

props.put("key.serializer.class", "kafka.serializer.StringEncoder");

props.put("request.required.acks", "-1");

producer = new Producer(new ProducerConfig(props));

}

void produce() {

int messageNo = 90;

final int COUNT = 100;

while (messageNo < COUNT) {

String key = String.valueOf(messageNo);

String data = "hello kafka message" + key;

producer.send(new KeyedMessage(TOPIC, key ,data));

System.out.println(data);

messageNo++;

}

}

public static void main(String[] args) throws Exception {

new KafkaProducer().produce();

}

}

运行结果：

消费方接收到的消息如下：

2.consumer端程序：

package com.test.frame.kafka.controller;

import kafka.consumer.ConsumerConfig;

import kafka.consumer.ConsumerIterator;

import kafka.consumer.KafkaStream;

import kafka.javaapi.consumer.ConsumerConnector;

import kafka.serializer.StringDecoder;

import kafka.utils.VerifiableProperties;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Properties;

public class KafkaConsumer {

private final ConsumerConnector consumer;

private KafkaConsumer() {

Properties props = new Properties();

//zookeeper 配置

props.put("zookeeper.connect", "localhost:2181");

//group 代表一个消费组

props.put("group.id", "jd-group");

//zk连接超时

props.put("zookeeper.session.timeout.ms", "4000");

props.put("zookeeper.sync.time.ms", "200");

props.put("auto.commit.interval.ms", "1000");

props.put("auto.offset.reset", "smallest");

//序列化类

props.put("serializer.class", "kafka.serializer.StringEncoder");

ConsumerConfig config = new ConsumerConfig(props);

consumer = kafka.consumer.Consumer.createJavaConsumerConnector(config);

}

void consume() {

Map topicCountMap = new HashMap();

topicCountMap.put(KafkaProducer.TOPIC, new Integer(1));

StringDecoder keyDecoder = new StringDecoder(new VerifiableProperties());

StringDecoder valueDecoder = new StringDecoder(new VerifiableProperties());

Map>> consumerMap =

consumer.createMessageStreams(topicCountMap,keyDecoder,valueDecoder);

KafkaStream stream = consumerMap.get(KafkaProducer.TOPIC).get(0);

ConsumerIterator it = stream.iterator();

while (it.hasNext())

System.out.println(it.next().message());

}

public static void main(String[] args) {

new KafkaConsumer().consume();

}

}

运行结果如下：

此时已经联通成功。