kafka0.8.2消费者实例

maven

    org.apache.kafka
    kafka_2.10
    0.8.2.2

高级api实例

public class NativeConsumer {

    private static final String TOPIC = "kafkatopic";

    public void exec() throws UnsupportedEncodingException {
        Properties props = new Properties();
        props.put("zookeeper.connect", "localhost:2181");
        props.put("auto.offset.reset","smallest");
        props.put("group.id", "test-group");
        props.put("enable.auto.commit", "true");
        props.put("zookeeper.session.timeout.ms", "400");
        props.put("zookeeper.sync.time.ms", "200"); 
        props.put("auto.commit.interval.ms", "1000");
        ConsumerConfig consumerConfig =  new kafka.consumer.ConsumerConfig(props);
        ConsumerConnector consumerConnector = kafka.consumer.Consumer.createJavaConsumerConnector(consumerConfig);

        Map topicCountMap = new HashMap();
        int localConsumerCount = 1;
        topicCountMap.put(TOPIC, localConsumerCount);
        Map>> consumerMap = consumerConnector
                .createMessageStreams(topicCountMap);
        List> streams = consumerMap.get(TOPIC);
        streams.stream().forEach(stream -> {
            ConsumerIterator it = stream.iterator();
            while (it.hasNext()) {
                System.out.println(new String(it.next().message()));
            }
        });
    }
}