KAFKA java 消费者

package com.yn.kafkatoredis.demo;

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;

public class Wtf {
    private final static String KAFKA_URL = "192.168.100.100:9092";
    //private final static String KAFKA_URL = "localhost:9092";
    private final static String TOPIC = "test";
    //private final static String TOPIC = "test";
    public static void main(String... args) throws Exception {
        try {
            Properties properties = new Properties();
            properties.put("bootstrap.servers", KAFKA_URL);
            properties.put("group.id", "qjhanwanggroupgroup");
            properties.put("enable.auto.commit", "true");
            properties.put("auto.commit.interval.ms", "1000");
            properties.put("auto.offset.reset", "earliest");
            properties.put("session.timeout.ms", "30000");
            properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
            properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

            KafkaConsumer kafkaConsumer = new KafkaConsumer(properties);
            kafkaConsumer.subscribe(Arrays.asList(TOPIC));
            while (true) {
                ConsumerRecords records = kafkaConsumer.poll(100);
                for (ConsumerRecord record : records) {
                    System.out.printf("offset = %d, value = %s", record.offset(), record.value());
                    System.out.println();
                }
            }

        }
        catch (Exception ex) {
            ex.printStackTrace();
            System.out.println("when calling kafka output error." + ex.getMessage());
        }
    }
}